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calvinmetcalf/ascript.js

Created April 22, 2014 21:32
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ascript.js
var start = document.getElementById('start');
var stuff = document.getElementById('stuff');
var remote = new PouchDB('https://skimdb.npmjs.com/registry');
var local = new PouchDB('npm');
start.addEventListener('click', function (){
remote.info().then(function (a) {
return a.doc_count;
}).then(function (count) {
remote.replicate.to(local, {
batch_size: 100
}).on('change', function (change) {
stuff.innerText = change.docs_written + ' out of ' + count;
}).on('complete', function () {
stuff.innerText = change.docs_written + ' done'
});
});
});
Raw
index.html
<div id="stuff"></div>
<button id="start">start</button>
<script src="pouchdb.js"></script>
<script src="ascript.js"></script>
Raw
pouchdb.js
!function(e){if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.PouchDB=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
module.exports = "2.2.0-alpha";
},{}],2:[function(_dereq_,module,exports){
"use strict";
var utils = _dereq_('./utils');
var merge = _dereq_('./merge');
var errors = _dereq_('./deps/errors');
var EventEmitter = _dereq_('events').EventEmitter;
var upsert = _dereq_('./deps/upsert');
var Changes = _dereq_('./changes');
var Promise = utils.Promise;
/*
* A generic pouch adapter
*/
// returns first element of arr satisfying callback predicate
function arrayFirst(arr, callback) {
for (var i = 0; i < arr.length; i++) {
if (callback(arr[i], i) === true) {
return arr[i];
}
}
return false;
}
// Wrapper for functions that call the bulkdocs api with a single doc,
// if the first result is an error, return an error
function yankError(callback) {
return function (err, results) {
if (err || results[0].error) {
callback(err || results[0]);
} else {
callback(null, results[0]);
}
};
}
// for every node in a revision tree computes its distance from the closest
// leaf
function computeHeight(revs) {
var height = {};
var edges = [];
merge.traverseRevTree(revs, function (isLeaf, pos, id, prnt) {
var rev = pos + "-" + id;
if (isLeaf) {
height[rev] = 0;
}
if (prnt !== undefined) {
edges.push({from: prnt, to: rev});
}
return rev;
});
edges.reverse();
edges.forEach(function (edge) {
if (height[edge.from] === undefined) {
height[edge.from] = 1 + height[edge.to];
} else {
height[edge.from] = Math.min(height[edge.from], 1 + height[edge.to]);
}
});
return height;
}
function allDocsKeysQuery(api, opts, callback) {
var keys = ('limit' in opts) ?
opts.keys.slice(opts.skip, opts.limit + opts.skip) :
(opts.skip > 0) ? opts.keys.slice(opts.skip) : opts.keys;
if (opts.descending) {
keys.reverse();
}
if (!keys.length) {
return api._allDocs({limit: 0}, callback);
}
var finalResults = {
rows: new Array(keys.length),
offset: opts.skip
};
Promise.all(keys.map(function (key, i) {
var subOpts = utils.extend(true, {key: key, deleted: 'ok'}, opts);
['limit', 'skip', 'keys'].forEach(function (optKey) {
delete subOpts[optKey];
});
return new Promise(function (resolve, reject) {
api._allDocs(subOpts, function (err, res) {
if (err) {
return reject(err);
}
finalResults.rows[i] = res.rows[0] || {key: key, error: 'not_found'};
finalResults.total_rows = res.total_rows;
resolve();
});
});
})).then(function () {
callback(null, finalResults);
}).catch(function (err) {
callback(err);
});
}
utils.inherits(AbstractPouchDB, EventEmitter);
module.exports = AbstractPouchDB;
function AbstractPouchDB() {
var self = this;
EventEmitter.call(this);
self.autoCompact = function (callback) {
if (!self.auto_compaction) {
return callback;
}
return function (err, res) {
if (err) {
callback(err);
} else {
var count = res.length;
var decCount = function () {
count--;
if (!count) {
callback(null, res);
}
};
res.forEach(function (doc) {
if (doc.ok) {
// TODO: we need better error handling
self.compactDocument(doc.id, 1, decCount);
} else {
decCount();
}
});
}
};
};
var listeners = 0, changes;
var eventNames = ['change', 'delete', 'create', 'update'];
this.on('newListener', function (eventName) {
if (~eventNames.indexOf(eventName)) {
if (listeners) {
listeners++;
return;
} else {
listeners++;
}
} else {
return;
}
var lastChange = 0;
changes = this.changes({
conflicts: true,
include_docs: true,
continuous: true,
since: 'latest',
onChange: function (change) {
if (change.seq <= lastChange) {
return;
}
lastChange = change.seq;
self.emit('change', change);
if (change.doc._deleted) {
self.emit('delete', change);
} else if (change.doc._rev.split('-')[0] === '1') {
self.emit('create', change);
} else {
self.emit('update', change);
}
}
});
});
this.on('removeListener', function (eventName) {
if (~eventNames.indexOf(eventName)) {
listeners--;
if (listeners) {
return;
}
} else {
return;
}
changes.cancel();
});
}
AbstractPouchDB.prototype.post =
utils.adapterFun('post', function (doc, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (typeof doc !== 'object' || Array.isArray(doc)) {
return callback(errors.NOT_AN_OBJECT);
}
return this.bulkDocs({docs: [doc]}, opts,
this.autoCompact(yankError(callback)));
});
AbstractPouchDB.prototype.put =
utils.adapterFun('put', utils.getArguments(function (args) {
var temp, temptype, opts, callback;
var doc = args.shift();
var id = '_id' in doc;
if (typeof doc !== 'object' || Array.isArray(doc)) {
callback = args.pop();
return callback(errors.NOT_AN_OBJECT);
}
doc = utils.clone(doc);
while (true) {
temp = args.shift();
temptype = typeof temp;
if (temptype === "string" && !id) {
doc._id = temp;
id = true;
} else if (temptype === "string" && id && !('_rev' in doc)) {
doc._rev = temp;
} else if (temptype === "object") {
opts = temp;
} else if (temptype === "function") {
callback = temp;
}
if (!args.length) {
break;
}
}
opts = opts || {};
var error = utils.invalidIdError(doc._id);
if (error) {
return callback(error);
}
return this.bulkDocs({docs: [doc]}, opts,
this.autoCompact(yankError(callback)));
}));
AbstractPouchDB.prototype.putAttachment =
utils.adapterFun('putAttachment', function (docId, attachmentId, rev,
blob, type, callback) {
var api = this;
if (typeof type === 'function') {
callback = type;
type = blob;
blob = rev;
rev = null;
}
if (typeof type === 'undefined') {
type = blob;
blob = rev;
rev = null;
}
function createAttachment(doc) {
doc._attachments = doc._attachments || {};
doc._attachments[attachmentId] = {
content_type: type,
data: blob
};
api.put(doc, callback);
}
api.get(docId, function (err, doc) {
// create new doc
if (err && err.error === errors.MISSING_DOC.error) {
createAttachment({_id: docId});
return;
}
if (err) {
callback(err);
return;
}
if (doc._rev !== rev) {
callback(errors.REV_CONFLICT);
return;
}
createAttachment(doc);
});
});
AbstractPouchDB.prototype.removeAttachment =
utils.adapterFun('removeAttachment', function (docId, attachmentId, rev,
callback) {
var self = this;
self.get(docId, function (err, obj) {
if (err) {
callback(err);
return;
}
if (obj._rev !== rev) {
callback(errors.REV_CONFLICT);
return;
}
if (!obj._attachments) {
return callback();
}
delete obj._attachments[attachmentId];
if (Object.keys(obj._attachments).length === 0) {
delete obj._attachments;
}
self.put(obj, callback);
});
});
AbstractPouchDB.prototype.remove =
utils.adapterFun('remove', function (doc, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (opts === undefined) {
opts = {};
}
opts = utils.clone(opts);
opts.was_delete = true;
var newDoc = {_id: doc._id, _rev: doc._rev};
newDoc._deleted = true;
return this.bulkDocs({docs: [newDoc]}, opts, yankError(callback));
});
AbstractPouchDB.prototype.revsDiff =
utils.adapterFun('revsDiff', function (req, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
var ids = Object.keys(req);
var count = 0;
var missing = {};
function addToMissing(id, revId) {
if (!missing[id]) {
missing[id] = {missing: []};
}
missing[id].missing.push(revId);
}
function processDoc(id, rev_tree) {
// Is this fast enough? Maybe we should switch to a set simulated by a map
var missingForId = req[id].slice(0);
merge.traverseRevTree(rev_tree, function (isLeaf, pos, revHash, ctx,
opts) {
var rev = pos + '-' + revHash;
var idx = missingForId.indexOf(rev);
if (idx === -1) {
return;
}
missingForId.splice(idx, 1);
if (opts.status !== 'available') {
addToMissing(id, rev);
}
});
// Traversing the tree is synchronous, so now `missingForId` contains
// revisions that were not found in the tree
missingForId.forEach(function (rev) {
addToMissing(id, rev);
});
}
ids.map(function (id) {
this._getRevisionTree(id, function (err, rev_tree) {
if (err && err.name === 'not_found' && err.message === 'missing') {
missing[id] = {missing: req[id]};
} else if (err) {
return callback(err);
} else {
processDoc(id, rev_tree);
}
if (++count === ids.length) {
return callback(null, missing);
}
});
}, this);
});
// compact one document and fire callback
// by compacting we mean removing all revisions which
// are further from the leaf in revision tree than max_height
AbstractPouchDB.prototype.compactDocument =
function (docId, max_height, callback) {
var self = this;
this._getRevisionTree(docId, function (err, rev_tree) {
if (err) {
return callback(err);
}
var height = computeHeight(rev_tree);
var candidates = [];
var revs = [];
Object.keys(height).forEach(function (rev) {
if (height[rev] > max_height) {
candidates.push(rev);
}
});
merge.traverseRevTree(rev_tree, function (isLeaf, pos, revHash, ctx, opts) {
var rev = pos + '-' + revHash;
if (opts.status === 'available' && candidates.indexOf(rev) !== -1) {
opts.status = 'missing';
revs.push(rev);
}
});
self._doCompaction(docId, rev_tree, revs, callback);
});
};
// compact the whole database using single document
// compaction
AbstractPouchDB.prototype.compact =
utils.adapterFun('compact', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
var self = this;
this.changes({complete: function (err, res) {
if (err) {
callback(); // TODO: silently fail
return;
}
var count = res.results.length;
if (!count) {
callback();
return;
}
res.results.forEach(function (row) {
self.compactDocument(row.id, 0, function () {
count--;
if (!count) {
callback();
}
});
});
}});
});
/* Begin api wrappers. Specific functionality to storage belongs in the
_[method] */
AbstractPouchDB.prototype.get =
utils.adapterFun('get', function (id, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (typeof id !== 'string') {
return callback(errors.INVALID_ID);
}
var leaves = [], self = this;
function finishOpenRevs() {
var result = [];
var count = leaves.length;
if (!count) {
return callback(null, result);
}
// order with open_revs is unspecified
leaves.forEach(function (leaf) {
self.get(id,
{rev: leaf, revs: opts.revs, attachments: opts.attachments},
function (err, doc) {
if (!err) {
result.push({ok: doc});
} else {
result.push({missing: leaf});
}
count--;
if (!count) {
callback(null, result);
}
});
});
}
if (opts.open_revs) {
if (opts.open_revs === "all") {
this._getRevisionTree(id, function (err, rev_tree) {
if (err) {
// if there's no such document we should treat this
// situation the same way as if revision tree was empty
rev_tree = [];
}
leaves = merge.collectLeaves(rev_tree).map(function (leaf) {
return leaf.rev;
});
finishOpenRevs();
});
} else {
if (Array.isArray(opts.open_revs)) {
leaves = opts.open_revs;
for (var i = 0; i < leaves.length; i++) {
var l = leaves[i];
// looks like it's the only thing couchdb checks
if (!(typeof(l) === "string" && /^\d+-/.test(l))) {
return callback(errors.error(errors.BAD_REQUEST,
"Invalid rev format"));
}
}
finishOpenRevs();
} else {
return callback(errors.error(errors.UNKNOWN_ERROR,
'function_clause'));
}
}
return; // open_revs does not like other options
}
return this._get(id, opts, function (err, result) {
opts = utils.clone(opts);
if (err) {
return callback(err);
}
var doc = result.doc;
if (!doc) {
// a smoke test for something being very wrong
return callback(new Error('no doc!'));
}
var metadata = result.metadata;
var ctx = result.ctx;
if (opts.conflicts) {
var conflicts = merge.collectConflicts(metadata);
if (conflicts.length) {
doc._conflicts = conflicts;
}
}
if (opts.revs || opts.revs_info) {
var paths = merge.rootToLeaf(metadata.rev_tree);
var path = arrayFirst(paths, function (arr) {
return arr.ids.map(function (x) { return x.id; })
.indexOf(doc._rev.split('-')[1]) !== -1;
});
path.ids.splice(path.ids.map(function (x) {return x.id; })
.indexOf(doc._rev.split('-')[1]) + 1);
path.ids.reverse();
if (opts.revs) {
doc._revisions = {
start: (path.pos + path.ids.length) - 1,
ids: path.ids.map(function (rev) {
return rev.id;
})
};
}
if (opts.revs_info) {
var pos = path.pos + path.ids.length;
doc._revs_info = path.ids.map(function (rev) {
pos--;
return {
rev: pos + '-' + rev.id,
status: rev.opts.status
};
});
}
}
if (opts.local_seq) {
doc._local_seq = result.metadata.seq;
}
if (opts.attachments && doc._attachments) {
var attachments = doc._attachments;
var count = Object.keys(attachments).length;
if (count === 0) {
return callback(null, doc);
}
Object.keys(attachments).forEach(function (key) {
this._getAttachment(attachments[key],
{encode: true, ctx: ctx}, function (err, data) {
doc._attachments[key].data = data;
if (!--count) {
callback(null, doc);
}
});
}, self);
} else {
if (doc._attachments) {
for (var key in doc._attachments) {
if (doc._attachments.hasOwnProperty(key)) {
doc._attachments[key].stub = true;
}
}
}
callback(null, doc);
}
});
});
AbstractPouchDB.prototype.getAttachment =
utils.adapterFun('getAttachment', function (docId, attachmentId, opts,
callback) {
var self = this;
if (opts instanceof Function) {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
this._get(docId, opts, function (err, res) {
if (err) {
return callback(err);
}
if (res.doc._attachments && res.doc._attachments[attachmentId]) {
opts.ctx = res.ctx;
self._getAttachment(res.doc._attachments[attachmentId], opts, callback);
} else {
return callback(errors.MISSING_DOC);
}
});
});
AbstractPouchDB.prototype.allDocs =
utils.adapterFun('allDocs', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
opts.skip = typeof opts.skip !== 'undefined' ? opts.skip : 0;
if ('keys' in opts) {
if (!Array.isArray(opts.keys)) {
return callback(new TypeError('options.keys must be an array'));
}
var incompatibleOpt =
['startkey', 'endkey', 'key'].filter(function (incompatibleOpt) {
return incompatibleOpt in opts;
})[0];
if (incompatibleOpt) {
callback(errors.error(errors.QUERY_PARSE_ERROR,
'Query parameter `' + incompatibleOpt +
'` is not compatible with multi-get'
));
return;
}
if (this.type() !== 'http') {
return allDocsKeysQuery(this, opts, callback);
}
}
return this._allDocs(opts, callback);
});
AbstractPouchDB.prototype.changes = function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return new Changes(this, opts, callback);
};
AbstractPouchDB.prototype.close =
utils.adapterFun('close', function (callback) {
return this._close(callback);
});
AbstractPouchDB.prototype.info = utils.adapterFun('info', function (callback) {
var self = this;
this._info(function (err, info) {
if (err) {
return callback(err);
}
var len = self.prefix.length;
if (info.db_name.length > len &&
info.db_name.slice(0, len) === self.prefix) {
info.db_name = info.db_name.slice(len);
}
callback(null, info);
});
});
AbstractPouchDB.prototype.id = utils.adapterFun('id', function (callback) {
return this._id(callback);
});
AbstractPouchDB.prototype.type = function () {
return (typeof this._type === 'function') ? this._type() : this.adapter;
};
AbstractPouchDB.prototype.bulkDocs =
utils.adapterFun('bulkDocs', function (req, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (!opts) {
opts = {};
} else {
opts = utils.clone(opts);
}
if (!req || !req.docs) {
return callback(errors.MISSING_BULK_DOCS);
}
if (!Array.isArray(req.docs)) {
return callback(errors.QUERY_PARSE_ERROR);
}
for (var i = 0; i < req.docs.length; ++i) {
if (typeof req.docs[i] !== 'object' || Array.isArray(req.docs[i])) {
return callback(errors.NOT_AN_OBJECT);
}
}
req = utils.clone(req);
if (!('new_edits' in opts)) {
if ('new_edits' in req) {
opts.new_edits = req.new_edits;
} else {
opts.new_edits = true;
}
}
return this._bulkDocs(req, opts, this.autoCompact(callback));
});
AbstractPouchDB.prototype.registerDependentDatabase =
utils.adapterFun('registerDependentDatabase', function (dependentDb,
callback) {
var depDB = new this.constructor(dependentDb, {adapter: this._adapter});
function diffFun(doc) {
doc.dependentDbs = doc.dependentDbs || {};
if (doc.dependentDbs[dependentDb]) {
return false; // no update required
}
doc.dependentDbs[dependentDb] = true;
return doc;
}
upsert(this, '_local/_pouch_dependentDbs', diffFun, function (err) {
if (err) {
return callback(err);
}
return callback(null, {db: depDB});
});
});
},{"./changes":6,"./deps/errors":10,"./deps/upsert":11,"./merge":16,"./utils":21,"events":24}],3:[function(_dereq_,module,exports){
"use strict";
var utils = _dereq_('../utils');
var errors = _dereq_('../deps/errors');
// parseUri 1.2.2
// (c) Steven Levithan <stevenlevithan.com>
// MIT License
function parseUri(str) {
var o = parseUri.options;
var m = o.parser[o.strictMode ? "strict" : "loose"].exec(str);
var uri = {};
var i = 14;
while (i--) {
uri[o.key[i]] = m[i] || "";
}
uri[o.q.name] = {};
uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {
if ($1) {
uri[o.q.name][$1] = $2;
}
});
return uri;
}
function encodeDocId(id) {
if (/^_(design|local)/.test(id)) {
return id;
}
return encodeURIComponent(id);
}
parseUri.options = {
strictMode: false,
key: ["source", "protocol", "authority", "userInfo", "user", "password",
"host", "port", "relative", "path", "directory", "file", "query",
"anchor"],
q: {
name: "queryKey",
parser: /(?:^|&)([^&=]*)=?([^&]*)/g
},
parser: {
/* jshint maxlen: false */
strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
}
};
// Get all the information you possibly can about the URI given by name and
// return it as a suitable object.
function getHost(name, opts) {
// If the given name contains "http:"
if (/http(s?):/.test(name)) {
// Prase the URI into all its little bits
var uri = parseUri(name);
// Store the fact that it is a remote URI
uri.remote = true;
// Store the user and password as a separate auth object
if (uri.user || uri.password) {
uri.auth = {username: uri.user, password: uri.password};
}
// Split the path part of the URI into parts using '/' as the delimiter
// after removing any leading '/' and any trailing '/'
var parts = uri.path.replace(/(^\/|\/$)/g, '').split('/');
// Store the first part as the database name and remove it from the parts
// array
uri.db = parts.pop();
// Restore the path by joining all the remaining parts (all the parts
// except for the database name) with '/'s
uri.path = parts.join('/');
opts = opts || {};
opts = utils.clone(opts);
uri.headers = opts.headers || {};
if (opts.auth || uri.auth) {
var nAuth = opts.auth || uri.auth;
var token = utils.btoa(nAuth.username + ':' + nAuth.password);
uri.headers.Authorization = 'Basic ' + token;
}
if (opts.headers) {
uri.headers = opts.headers;
}
return uri;
}
// If the given name does not contain 'http:' then return a very basic object
// with no host, the current path, the given name as the database name and no
// username/password
return {host: '', path: '/', db: name, auth: false};
}
// Generate a URL with the host data given by opts and the given path
function genDBUrl(opts, path) {
return genUrl(opts, opts.db + '/' + path);
}
// Generate a URL with the host data given by opts and the given path
function genUrl(opts, path) {
if (opts.remote) {
// If the host already has a path, then we need to have a path delimiter
// Otherwise, the path delimiter is the empty string
var pathDel = !opts.path ? '' : '/';
// If the host already has a path, then we need to have a path delimiter
// Otherwise, the path delimiter is the empty string
return opts.protocol + '://' + opts.host + ':' + opts.port + '/' +
opts.path + pathDel + path;
}
return '/' + path;
}
// Implements the PouchDB API for dealing with CouchDB instances over HTTP
function HttpPouch(opts, callback) {
// The functions that will be publicly available for HttpPouch
var api = this;
api.getHost = opts.getHost ? opts.getHost : getHost;
// Parse the URI given by opts.name into an easy-to-use object
var host = api.getHost(opts.name, opts);
// Generate the database URL based on the host
var dbUrl = genDBUrl(host, '');
api.getUrl = function () {return dbUrl; };
var ajaxOpts = opts.ajax || {};
opts = utils.clone(opts);
function ajax(options, callback) {
return utils.ajax(utils.extend({}, ajaxOpts, options), callback);
}
var uuids = {
list: [],
get: function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {count: 10};
}
var cb = function (err, body) {
if (err || !('uuids' in body)) {
callback(err || errors.UNKNOWN_ERROR);
} else {
uuids.list = uuids.list.concat(body.uuids);
callback(null, "OK");
}
};
var params = '?count=' + opts.count;
ajax({
headers: host.headers,
method: 'GET',
url: genUrl(host, '_uuids') + params
}, cb);
}
};
// Create a new CouchDB database based on the given opts
var createDB = function () {
ajax({headers: host.headers, method: 'PUT', url: dbUrl},
function (err, ret) {
// If we get an "Unauthorized" error
if (err && err.status === 401) {
// Test if the database already exists
ajax({headers: host.headers, method: 'HEAD', url: dbUrl},
function (err, ret) {
// If there is still an error
if (err) {
// Give the error to the callback to deal with
callback(err);
} else {
// Continue as if there had been no errors
callback(null, api);
}
});
// If there were no errros or if the only error is "Precondition Failed"
// (note: "Precondition Failed" occurs when we try to create a database
// that already exists)
} else if (!err || err.status === 412) {
// Continue as if there had been no errors
callback(null, api);
} else {
callback(err);
}
});
};
if (!opts.skipSetup) {
ajax({headers: host.headers, method: 'GET', url: dbUrl},
function (err, ret) {
//check if the db exists
if (err) {
if (err.status === 404) {
//if it doesn't, create it
createDB();
} else {
callback(err);
}
} else {
//go do stuff with the db
callback(null, api);
}
});
}
api.type = function () {
return 'http';
};
api.id = utils.adapterFun('id', function (callback) {
ajax({
headers: host.headers,
method: 'GET',
url: genUrl(host, '')
}, function (err, result) {
if (err) {
callback(err);
} else {
var uuid = (result && result.uuid) ?
result.uuid + host.db : genDBUrl(host, '');
callback(null, uuid);
}
});
});
api.request = utils.adapterFun('request', function (options, callback) {
options.headers = host.headers;
options.url = genDBUrl(host, options.url);
ajax(options, callback);
});
// Sends a POST request to the host calling the couchdb _compact function
// version: The version of CouchDB it is running
api.compact = utils.adapterFun('compact', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
ajax({
headers: host.headers,
url: genDBUrl(host, '_compact'),
method: 'POST'
}, function () {
function ping() {
api.info(function (err, res) {
if (!res.compact_running) {
callback();
} else {
setTimeout(ping, opts.interval || 200);
}
});
}
// Ping the http if it's finished compaction
if (typeof callback === "function") {
ping();
}
});
});
// Calls GET on the host, which gets back a JSON string containing
// couchdb: A welcome string
// version: The version of CouchDB it is running
api._info = function (callback) {
ajax({
headers: host.headers,
method: 'GET',
url: genDBUrl(host, '')
}, function (err, res) {
if (err) {
callback(err);
} else {
res.host = genDBUrl(host, '');
callback(null, res);
}
});
};
// Get the document with the given id from the database given by host.
// The id could be solely the _id in the database, or it may be a
// _design/ID or _local/ID path
api.get = utils.adapterFun('get', function (id, opts, callback) {
// If no options were given, set the callback to the second parameter
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
if (opts.auto_encode === undefined) {
opts.auto_encode = true;
}
// List of parameters to add to the GET request
var params = [];
// If it exists, add the opts.revs value to the list of parameters.
// If revs=true then the resulting JSON will include a field
// _revisions containing an array of the revision IDs.
if (opts.revs) {
params.push('revs=true');
}
// If it exists, add the opts.revs_info value to the list of parameters.
// If revs_info=true then the resulting JSON will include the field
// _revs_info containing an array of objects in which each object
// representing an available revision.
if (opts.revs_info) {
params.push('revs_info=true');
}
if (opts.local_seq) {
params.push('local_seq=true');
}
// If it exists, add the opts.open_revs value to the list of parameters.
// If open_revs=all then the resulting JSON will include all the leaf
// revisions. If open_revs=["rev1", "rev2",...] then the resulting JSON
// will contain an array of objects containing data of all revisions
if (opts.open_revs) {
if (opts.open_revs !== "all") {
opts.open_revs = JSON.stringify(opts.open_revs);
}
params.push('open_revs=' + opts.open_revs);
}
// If it exists, add the opts.attachments value to the list of parameters.
// If attachments=true the resulting JSON will include the base64-encoded
// contents in the "data" property of each attachment.
if (opts.attachments) {
params.push('attachments=true');
}
// If it exists, add the opts.rev value to the list of parameters.
// If rev is given a revision number then get the specified revision.
if (opts.rev) {
params.push('rev=' + opts.rev);
}
// If it exists, add the opts.conflicts value to the list of parameters.
// If conflicts=true then the resulting JSON will include the field
// _conflicts containing all the conflicting revisions.
if (opts.conflicts) {
params.push('conflicts=' + opts.conflicts);
}
// Format the list of parameters into a valid URI query string
params = params.join('&');
params = params === '' ? '' : '?' + params;
if (opts.auto_encode) {
id = encodeDocId(id);
}
// Set the options for the ajax call
var options = {
headers: host.headers,
method: 'GET',
url: genDBUrl(host, id + params)
};
// If the given id contains at least one '/' and the part before the '/'
// is NOT "_design" and is NOT "_local"
// OR
// If the given id contains at least two '/' and the part before the first
// '/' is "_design".
// TODO This second condition seems strange since if parts[0] === '_design'
// then we already know that parts[0] !== '_local'.
var parts = id.split('/');
if ((parts.length > 1 && parts[0] !== '_design' && parts[0] !== '_local') ||
(parts.length > 2 && parts[0] === '_design' && parts[0] !== '_local')) {
// Binary is expected back from the server
options.binary = true;
}
// Get the document
ajax(options, function (err, doc, xhr) {
// If the document does not exist, send an error to the callback
if (err) {
return callback(err);
}
// Send the document to the callback
callback(null, doc, xhr);
});
});
// Delete the document given by doc from the database given by host.
api.remove = utils.adapterFun('remove', function (doc, opts, callback) {
// If no options were given, set the callback to be the second parameter
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
// Delete the document
ajax({
headers: host.headers,
method: 'DELETE',
url: genDBUrl(host, encodeDocId(doc._id)) + '?rev=' + doc._rev
}, callback);
});
// Get the attachment
api.getAttachment =
utils.adapterFun('getAttachment', function (docId, attachmentId, opts,
callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
if (opts.auto_encode === undefined) {
opts.auto_encode = true;
}
if (opts.auto_encode) {
docId = encodeDocId(docId);
}
opts.auto_encode = false;
api.get(docId + '/' + attachmentId, opts, callback);
});
// Remove the attachment given by the id and rev
api.removeAttachment =
utils.adapterFun('removeAttachment', function (docId, attachmentId, rev,
callback) {
ajax({
headers: host.headers,
method: 'DELETE',
url: genDBUrl(host, encodeDocId(docId) + '/' + attachmentId) + '?rev=' +
rev
}, callback);
});
// Add the attachment given by blob and its contentType property
// to the document with the given id, the revision given by rev, and
// add it to the database given by host.
api.putAttachment =
utils.adapterFun('putAttachment', function (docId, attachmentId, rev, blob,
type, callback) {
if (typeof type === 'function') {
callback = type;
type = blob;
blob = rev;
rev = null;
}
if (typeof type === 'undefined') {
type = blob;
blob = rev;
rev = null;
}
var id = encodeDocId(docId) + '/' + attachmentId;
var url = genDBUrl(host, id);
if (rev) {
url += '?rev=' + rev;
}
var opts = {
headers: host.headers,
method: 'PUT',
url: url,
processData: false,
body: blob,
timeout: 60000
};
opts.headers['Content-Type'] = type;
// Add the attachment
ajax(opts, callback);
});
// Add the document given by doc (in JSON string format) to the database
// given by host. This fails if the doc has no _id field.
api.put = utils.adapterFun('put', utils.getArguments(function (args) {
var temp, temptype, opts, callback;
var doc = args.shift();
var id = '_id' in doc;
if (typeof doc !== 'object' || Array.isArray(doc)) {
callback = args.pop();
return callback(errors.NOT_AN_OBJECT);
}
doc = utils.clone(doc);
while (true) {
temp = args.shift();
temptype = typeof temp;
if (temptype === "string" && !id) {
doc._id = temp;
id = true;
} else if (temptype === "string" && id && !('_rev' in doc)) {
doc._rev = temp;
} else if (temptype === "object") {
opts = utils.clone(temp);
} else if (temptype === "function") {
callback = temp;
}
if (!args.length) {
break;
}
}
opts = opts || {};
var error = utils.invalidIdError(doc._id);
if (error) {
return callback(error);
}
// List of parameter to add to the PUT request
var params = [];
// If it exists, add the opts.new_edits value to the list of parameters.
// If new_edits = false then the database will NOT assign this document a
// new revision number
if (opts && typeof opts.new_edits !== 'undefined') {
params.push('new_edits=' + opts.new_edits);
}
// Format the list of parameters into a valid URI query string
params = params.join('&');
if (params !== '') {
params = '?' + params;
}
// Add the document
ajax({
headers: host.headers,
method: 'PUT',
url: genDBUrl(host, encodeDocId(doc._id)) + params,
body: doc
}, callback);
}));
// Add the document given by doc (in JSON string format) to the database
// given by host. This does not assume that doc is a new document
// (i.e. does not have a _id or a _rev field.)
api.post = utils.adapterFun('post', function (doc, opts, callback) {
// If no options were given, set the callback to be the second parameter
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
if (typeof doc !== 'object') {
return callback(errors.NOT_AN_OBJECT);
}
if (! ("_id" in doc)) {
if (uuids.list.length > 0) {
doc._id = uuids.list.pop();
api.put(doc, opts, callback);
} else {
uuids.get(function (err, resp) {
if (err) {
return callback(errors.UNKNOWN_ERROR);
}
doc._id = uuids.list.pop();
api.put(doc, opts, callback);
});
}
} else {
api.put(doc, opts, callback);
}
});
// Update/create multiple documents given by req in the database
// given by host.
api.bulkDocs = utils.adapterFun('bulkDocs', function (req, opts, callback) {
// If no options were given, set the callback to be the second parameter
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (!opts) {
opts = {};
}
if (!Array.isArray(req.docs)) {
return callback(
errors.error(
errors.NOT_AN_OBJECT, "Missing JSON list of 'docs'"));
}
var bad = req.docs.filter(function (doc) {
return typeof doc !== 'object' || Array.isArray(doc);
});
if (bad.length) {
return callback(errors.NOT_AN_OBJECT);
}
req = utils.clone(req);
opts = utils.clone(opts);
// If opts.new_edits exists add it to the document data to be
// send to the database.
// If new_edits=false then it prevents the database from creating
// new revision numbers for the documents. Instead it just uses
// the old ones. This is used in database replication.
if (typeof opts.new_edits !== 'undefined') {
req.new_edits = opts.new_edits;
}
// Update/create the documents
ajax({
headers: host.headers,
method: 'POST',
url: genDBUrl(host, '_bulk_docs'),
body: req
}, callback);
});
// Get a listing of the documents in the database given
// by host and ordered by increasing id.
api.allDocs = utils.adapterFun('allDocs', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
// List of parameters to add to the GET request
var params = [];
var body;
var method = 'GET';
// TODO I don't see conflicts as a valid parameter for a
// _all_docs request
// (see http://wiki.apache.org/couchdb/HTTP_Document_API#all_docs)
if (opts.conflicts) {
params.push('conflicts=true');
}
// If opts.descending is truthy add it to params
if (opts.descending) {
params.push('descending=true');
}
// If opts.include_docs exists, add the include_docs value to the
// list of parameters.
// If include_docs=true then include the associated document with each
// result.
if (opts.include_docs) {
params.push('include_docs=true');
}
if (opts.key) {
params.push('key=' + encodeURIComponent(JSON.stringify(opts.key)));
}
// If opts.startkey exists, add the startkey value to the list of
// parameters.
// If startkey is given then the returned list of documents will
// start with the document whose id is startkey.
if (opts.startkey) {
params.push('startkey=' +
encodeURIComponent(JSON.stringify(opts.startkey)));
}
// If opts.endkey exists, add the endkey value to the list of parameters.
// If endkey is given then the returned list of docuemnts will
// end with the document whose id is endkey.
if (opts.endkey) {
params.push('endkey=' + encodeURIComponent(JSON.stringify(opts.endkey)));
}
// If opts.limit exists, add the limit value to the parameter list.
if (typeof opts.limit !== 'undefined') {
params.push('limit=' + opts.limit);
}
if (typeof opts.skip !== 'undefined') {
params.push('skip=' + opts.skip);
}
// Format the list of parameters into a valid URI query string
params = params.join('&');
if (params !== '') {
params = '?' + params;
}
if (typeof opts.keys !== 'undefined') {
var MAX_URL_LENGTH = 2000;
// according to http://stackoverflow.com/a/417184/680742,
// the de factor URL length limit is 2000 characters
var keysAsString =
'keys=' + encodeURIComponent(JSON.stringify(opts.keys));
if (keysAsString.length + params.length + 1 <= MAX_URL_LENGTH) {
// If the keys are short enough, do a GET. we do this to work around
// Safari not understanding 304s on POSTs (see issue #1239)
params += (params.indexOf('?') !== -1 ? '&' : '?') + keysAsString;
} else {
// If keys are too long, issue a POST request to circumvent GET
// query string limits
// see http://wiki.apache.org/couchdb/HTTP_view_API#Querying_Options
method = 'POST';
body = JSON.stringify({keys: opts.keys});
}
}
// Get the document listing
ajax({
headers: host.headers,
method: method,
url: genDBUrl(host, '_all_docs' + params),
body: body
}, callback);
});
// Get a list of changes made to documents in the database given by host.
// TODO According to the README, there should be two other methods here,
// api.changes.addListener and api.changes.removeListener.
api._changes = function (opts) {
// We internally page the results of a changes request, this means
// if there is a large set of changes to be returned we can start
// processing them quicker instead of waiting on the entire
// set of changes to return and attempting to process them at once
var CHANGES_LIMIT = 25;
opts = utils.clone(opts);
opts.timeout = opts.timeout || 0;
// set timeout to 20s to prevent aborting via Ajax timeout
var params = { timeout: 20 * 1000 };
var limit = (typeof opts.limit !== 'undefined') ? opts.limit : false;
if (limit === 0) {
limit = 1;
}
var returnDocs;
if ('returnDocs' in opts) {
returnDocs = opts.returnDocs;
} else {
returnDocs = true;
}
//
var leftToFetch = limit;
if (opts.style) {
params.style = opts.style;
}
if (opts.include_docs || opts.filter && typeof opts.filter === 'function') {
params.include_docs = true;
}
if (opts.continuous) {
params.feed = 'longpoll';
}
if (opts.conflicts) {
params.conflicts = true;
}
if (opts.descending) {
params.descending = true;
}
if (opts.filter && typeof opts.filter === 'string') {
params.filter = opts.filter;
if (opts.filter === '_view' &&
opts.view &&
typeof opts.view === 'string') {
params.view = opts.view;
}
}
// If opts.query_params exists, pass it through to the changes request.
// These parameters may be used by the filter on the source database.
if (opts.query_params && typeof opts.query_params === 'object') {
for (var param_name in opts.query_params) {
if (opts.query_params.hasOwnProperty(param_name)) {
params[param_name] = opts.query_params[param_name];
}
}
}
var xhr;
var lastFetchedSeq;
// Get all the changes starting wtih the one immediately after the
// sequence number given by since.
var fetch = function (since, callback) {
if (opts.aborted) {
return;
}
params.since = since;
if (opts.descending) {
if (limit) {
params.limit = leftToFetch;
}
} else {
params.limit = (!limit || leftToFetch > CHANGES_LIMIT) ?
CHANGES_LIMIT : leftToFetch;
}
var paramStr = '?' + Object.keys(params).map(function (k) {
return k + '=' + params[k];
}).join('&');
// Set the options for the ajax call
var xhrOpts = {
headers: host.headers,
method: 'GET',
url: genDBUrl(host, '_changes' + paramStr),
// _changes can take a long time to generate, especially when filtered
timeout: opts.timeout
};
lastFetchedSeq = since;
if (opts.aborted) {
return;
}
// Get the changes
xhr = ajax(xhrOpts, callback);
};
// If opts.since exists, get all the changes from the sequence
// number given by opts.since. Otherwise, get all the changes
// from the sequence number 0.
var fetchTimeout = 10;
var fetchRetryCount = 0;
var results = {results: []};
var fetched = function (err, res) {
if (opts.aborted) {
return;
}
var raw_results_length = 0;
// If the result of the ajax call (res) contains changes (res.results)
if (res && res.results) {
raw_results_length = res.results.length;
results.last_seq = res.last_seq;
// For each change
var req = {};
req.query = opts.query_params;
res.results = res.results.filter(function (c) {
leftToFetch--;
var ret = utils.filterChange(opts)(c);
if (ret) {
if (returnDocs) {
results.results.push(c);
}
utils.call(opts.onChange, c);
}
return ret;
});
} else if (err) {
// In case of an error, stop listening for changes and call
// opts.complete
opts.aborted = true;
utils.call(opts.complete, err);
return;
}
// The changes feed may have timed out with no results
// if so reuse last update sequence
if (res && res.last_seq) {
lastFetchedSeq = res.last_seq;
}
var finished = (limit && leftToFetch <= 0) ||
(res && raw_results_length < CHANGES_LIMIT) ||
(opts.descending);
if ((opts.continuous && !(limit && leftToFetch <= 0)) || !finished) {
// Increase retry delay exponentially as long as errors persist
if (err) {
fetchRetryCount += 1;
} else {
fetchRetryCount = 0;
}
var timeoutMultiplier = 1 << fetchRetryCount;
var retryWait = fetchTimeout * timeoutMultiplier;
var maximumWait = opts.maximumWait || 30000;
if (retryWait > maximumWait) {
utils.call(opts.complete, err || errors.UNKNOWN_ERROR);
return;
}
// Queue a call to fetch again with the newest sequence number
setTimeout(function () { fetch(lastFetchedSeq, fetched); }, retryWait);
} else {
// We're done, call the callback
utils.call(opts.complete, null, results);
}
};
fetch(opts.since || 0, fetched);
// Return a method to cancel this method from processing any more
return {
cancel: function () {
opts.aborted = true;
if (xhr) {
xhr.abort();
}
}
};
};
// Given a set of document/revision IDs (given by req), tets the subset of
// those that do NOT correspond to revisions stored in the database.
// See http://wiki.apache.org/couchdb/HttpPostRevsDiff
api.revsDiff = utils.adapterFun('revsDif', function (req, opts, callback) {
// If no options were given, set the callback to be the second parameter
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
// Get the missing document/revision IDs
ajax({
headers: host.headers,
method: 'POST',
url: genDBUrl(host, '_revs_diff'),
body: req
}, function (err, res) {
callback(err, res);
});
});
api.close = utils.adapterFun('close', function (callback) {
callback();
});
function replicateOnServer(target, opts, promise, targetHostUrl) {
opts = utils.clone(opts);
var targetHost = api.getHost(targetHostUrl);
var params = {
source: host.db,
target: targetHost.protocol === host.protocol &&
targetHost.authority ===
host.authority ? targetHost.db : targetHost.source
};
if (opts.continuous) {
params.continuous = true;
}
if (opts.create_target) {
params.create_target = true;
}
if (opts.doc_ids) {
params.doc_ids = opts.doc_ids;
}
if (opts.filter && typeof opts.filter === 'string') {
params.filter = opts.filter;
}
if (opts.query_params) {
params.query_params = opts.query_params;
}
var result = {};
var repOpts = {
headers: host.headers,
method: 'POST',
url: genUrl(host, '_replicate'),
body: params
};
var xhr;
promise.cancel = function () {
this.cancelled = true;
if (xhr && !result.ok) {
xhr.abort();
}
if (result._local_id) {
repOpts.body = {
replication_id: result._local_id
};
}
repOpts.body.cancel = true;
ajax(repOpts, function (err, resp, xhr) {
// If the replication cancel request fails, send an error to the
// callback
if (err) {
return callback(err);
}
// Send the replication cancel result to the complete callback
utils.call(opts.complete, null, result, xhr);
});
};
if (promise.cancelled) {
return;
}
xhr = ajax(repOpts, function (err, resp, xhr) {
// If the replication fails, send an error to the callback
if (err) {
return callback(err);
}
result.ok = true;
// Provided by CouchDB from 1.2.0 onward to cancel replication
if (resp._local_id) {
result._local_id = resp._local_id;
}
// Send the replication result to the complete callback
utils.call(opts.complete, null, resp, xhr);
});
}
api.replicateOnServer = function (target, opts, promise) {
if (!api.taskqueue.isReady) {
api.taskqueue.addTask('replicateOnServer', [target, opts, promise]);
return promise;
}
target.info(function (err, info) {
replicateOnServer(target, opts, promise, info.host);
});
};
api.destroy = utils.adapterFun('destroy', function (callback) {
ajax({
url: genDBUrl(host, ''),
method: 'DELETE',
headers: host.headers
}, function (err, resp) {
if (err) {
api.emit('error', err);
callback(err);
} else {
api.emit('destroyed');
callback(null, resp);
}
});
});
}
// Delete the HttpPouch specified by the given name.
HttpPouch.destroy = utils.toPromise(function (name, opts, callback) {
var host = getHost(name, opts);
opts = opts || {};
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts);
opts.headers = host.headers;
opts.method = 'DELETE';
opts.url = genDBUrl(host, '');
var ajaxOpts = opts.ajax || {};
opts = utils.extend({}, opts, ajaxOpts);
utils.ajax(opts, callback);
});
// HttpPouch is a valid adapter.
HttpPouch.valid = function () {
return true;
};
module.exports = HttpPouch;
},{"../deps/errors":10,"../utils":21}],4:[function(_dereq_,module,exports){
(function (global){
'use strict';
var utils = _dereq_('../utils');
var merge = _dereq_('../merge');
var errors = _dereq_('../deps/errors');
function idbError(callback) {
return function (event) {
callback(errors.error(errors.IDB_ERROR, event.target, event.type));
};
}
function isModernIdb() {
// check for outdated implementations of IDB
// that rely on the setVersion method instead of onupgradeneeded (issue #1207)
// cache based on appVersion, in case the browser is updated
var cacheKey = "_pouch__checkModernIdb_" +
(global.navigator && global.navigator.appVersion);
var cached = utils.hasLocalStorage() && global.localStorage[cacheKey];
if (cached) {
return JSON.parse(cached);
}
var dbName = '_pouch__checkModernIdb';
var result = global.indexedDB.open(dbName, 1).onupgradeneeded === null;
if (global.indexedDB.deleteDatabase) {
global.indexedDB.deleteDatabase(dbName); // db no longer needed
}
if (utils.hasLocalStorage()) {
global.localStorage[cacheKey] = JSON.stringify(result); // cache
}
return result;
}
function IdbPouch(opts, callback) {
// IndexedDB requires a versioned database structure, so we use the
// version here to manage migrations.
var ADAPTER_VERSION = 2;
// The object stores created for each database
// DOC_STORE stores the document meta data, its revision history and state
var DOC_STORE = 'document-store';
// BY_SEQ_STORE stores a particular version of a document, keyed by its
// sequence id
var BY_SEQ_STORE = 'by-sequence';
// Where we store attachments
var ATTACH_STORE = 'attach-store';
// Where we store meta data
var META_STORE = 'meta-store';
// Where we detect blob support
var DETECT_BLOB_SUPPORT_STORE = 'detect-blob-support';
var name = opts.name;
var req = global.indexedDB.open(name, ADAPTER_VERSION);
var docCount = -1;
if (!('openReqList' in IdbPouch)) {
IdbPouch.openReqList = {};
}
IdbPouch.openReqList[name] = req;
var blobSupport = null;
var instanceId = null;
var api = this;
var idb = null;
req.onupgradeneeded = function (e) {
var db = e.target.result;
if (e.oldVersion < 1) {
// initial schema
createSchema(db);
}
if (e.oldVersion < 2) {
// version 2 adds the deletedOrLocal index
addDeletedOrLocalIndex(e);
}
};
function createSchema(db) {
db.createObjectStore(DOC_STORE, {keyPath : 'id'})
.createIndex('seq', 'seq', {unique: true});
db.createObjectStore(BY_SEQ_STORE, {autoIncrement: true})
.createIndex('_doc_id_rev', '_doc_id_rev', {unique: true});
db.createObjectStore(ATTACH_STORE, {keyPath: 'digest'});
db.createObjectStore(META_STORE, {keyPath: 'id', autoIncrement: false});
db.createObjectStore(DETECT_BLOB_SUPPORT_STORE);
}
function addDeletedOrLocalIndex(e) {
var docStore = e.currentTarget.transaction.objectStore(DOC_STORE);
docStore.openCursor().onsuccess = function (event) {
var cursor = event.target.result;
if (cursor) {
var metadata = cursor.value;
var deleted = utils.isDeleted(metadata);
var local = utils.isLocalId(metadata.id);
metadata.deletedOrLocal = (deleted || local) ? "1" : "0";
docStore.put(metadata);
cursor['continue']();
} else {
docStore.createIndex('deletedOrLocal',
'deletedOrLocal', {unique : false});
}
};
}
req.onsuccess = function (e) {
idb = e.target.result;
idb.onversionchange = function () {
idb.close();
};
var txn = idb.transaction([META_STORE, DETECT_BLOB_SUPPORT_STORE],
'readwrite');
var req = txn.objectStore(META_STORE).get(META_STORE);
req.onsuccess = function (e) {
var idStored = false;
var checkSetupComplete = function () {
if (blobSupport === null || !idStored) {
return;
} else {
callback(null, api);
}
};
var meta = e.target.result || {id: META_STORE};
if (name + '_id' in meta) {
instanceId = meta[name + '_id'];
idStored = true;
checkSetupComplete();
} else {
instanceId = utils.uuid();
meta[name + '_id'] = instanceId;
txn.objectStore(META_STORE).put(meta).onsuccess = function () {
idStored = true;
checkSetupComplete();
};
}
// detect blob support
try {
txn.objectStore(DETECT_BLOB_SUPPORT_STORE).put(utils.createBlob(),
"key");
blobSupport = true;
} catch (err) {
blobSupport = false;
} finally {
checkSetupComplete();
}
};
};
req.onerror = idbError(callback);
api.type = function () {
return 'idb';
};
api._id = utils.toPromise(function (callback) {
callback(null, instanceId);
});
api._bulkDocs = function idb_bulkDocs(req, opts, callback) {
var newEdits = opts.new_edits;
var userDocs = req.docs;
// Parse the docs, give them a sequence number for the result
var docInfos = userDocs.map(function (doc, i) {
var newDoc = utils.parseDoc(doc, newEdits);
newDoc._bulk_seq = i;
return newDoc;
});
var docInfoErrors = docInfos.filter(function (docInfo) {
return docInfo.error;
});
if (docInfoErrors.length) {
return callback(docInfoErrors[0]);
}
var results = [];
var docsWritten = 0;
function writeMetaData(e) {
var meta = e.target.result;
meta.updateSeq = (meta.updateSeq || 0) + docsWritten;
txn.objectStore(META_STORE).put(meta);
}
function processDocs() {
if (!docInfos.length) {
txn.objectStore(META_STORE).get(META_STORE).onsuccess = writeMetaData;
return;
}
var currentDoc = docInfos.shift();
var req = txn.objectStore(DOC_STORE).get(currentDoc.metadata.id);
req.onsuccess = function process_docRead(event) {
var oldDoc = event.target.result;
if (!oldDoc) {
insertDoc(currentDoc);
} else {
updateDoc(oldDoc, currentDoc);
}
};
}
function complete(event) {
var aresults = [];
results.sort(sortByBulkSeq);
results.forEach(function (result) {
delete result._bulk_seq;
if (result.error) {
aresults.push(result);
return;
}
var metadata = result.metadata;
var rev = merge.winningRev(metadata);
aresults.push({
ok: true,
id: metadata.id,
rev: rev
});
if (utils.isLocalId(metadata.id)) {
return;
}
IdbPouch.Changes.notify(name);
IdbPouch.Changes.notifyLocalWindows(name);
});
docCount = -1; // invalidate
callback(null, aresults);
}
function preprocessAttachment(att, finish) {
if (att.stub) {
return finish();
}
if (typeof att.data === 'string') {
var data;
try {
data = atob(att.data);
} catch (e) {
var err = errors.error(errors.BAD_ARG,
"Attachments need to be base64 encoded");
return callback(err);
}
att.digest = 'md5-' + utils.MD5(data);
if (blobSupport) {
var type = att.content_type;
data = utils.fixBinary(data);
att.data = utils.createBlob([data], {type: type});
}
return finish();
}
var reader = new FileReader();
reader.onloadend = function (e) {
var binary = utils.arrayBufferToBinaryString(this.result);
att.digest = 'md5-' + utils.MD5(binary);
if (!blobSupport) {
att.data = btoa(binary);
}
finish();
};
reader.readAsArrayBuffer(att.data);
}
function preprocessAttachments(callback) {
if (!docInfos.length) {
return callback();
}
var docv = 0;
docInfos.forEach(function (docInfo) {
var attachments = docInfo.data && docInfo.data._attachments ?
Object.keys(docInfo.data._attachments) : [];
if (!attachments.length) {
return done();
}
var recv = 0;
function attachmentProcessed() {
recv++;
if (recv === attachments.length) {
done();
}
}
for (var key in docInfo.data._attachments) {
if (docInfo.data._attachments.hasOwnProperty(key)) {
preprocessAttachment(docInfo.data._attachments[key],
attachmentProcessed);
}
}
});
function done() {
docv++;
if (docInfos.length === docv) {
callback();
}
}
}
function writeDoc(docInfo, winningRev, deleted, callback) {
var err = null;
var recv = 0;
docInfo.data._id = docInfo.metadata.id;
docInfo.data._rev = docInfo.metadata.rev;
docsWritten++;
if (deleted) {
docInfo.data._deleted = true;
}
var attachments = docInfo.data._attachments ?
Object.keys(docInfo.data._attachments) : [];
function collectResults(attachmentErr) {
if (!err) {
if (attachmentErr) {
err = attachmentErr;
callback(err);
} else if (recv === attachments.length) {
finish();
}
}
}
function attachmentSaved(err) {
recv++;
collectResults(err);
}
for (var key in docInfo.data._attachments) {
if (!docInfo.data._attachments[key].stub) {
var data = docInfo.data._attachments[key].data;
delete docInfo.data._attachments[key].data;
var digest = docInfo.data._attachments[key].digest;
saveAttachment(docInfo, digest, data, attachmentSaved);
} else {
recv++;
collectResults();
}
}
function finish() {
docInfo.data._doc_id_rev = docInfo.data._id + "::" + docInfo.data._rev;
var index = txn.objectStore(BY_SEQ_STORE).index('_doc_id_rev');
index.getKey(docInfo.data._doc_id_rev).onsuccess = function (e) {
var dataReq = e.target.result ?
txn.objectStore(BY_SEQ_STORE).put(docInfo.data, e.target.result) :
txn.objectStore(BY_SEQ_STORE).put(docInfo.data);
dataReq.onsuccess = function (e) {
var metadata = docInfo.metadata;
metadata.seq = e.target.result;
// Current _rev is calculated from _rev_tree on read
delete metadata.rev;
var local = utils.isLocalId(metadata.id);
metadata.deletedOrLocal = (deleted || local) ? "1" : "0";
metadata.winningRev = merge.winningRev(metadata);
var metaDataReq = txn.objectStore(DOC_STORE).put(metadata);
metaDataReq.onsuccess = function () {
delete metadata.deletedOrLocal;
delete metadata.winningRev;
results.push(docInfo);
utils.call(callback);
};
};
};
}
if (!attachments.length) {
finish();
}
}
function updateDoc(oldDoc, docInfo) {
var winningRev = merge.winningRev(docInfo.metadata);
var deleted = utils.isDeleted(docInfo.metadata, winningRev);
var merged =
merge.merge(oldDoc.rev_tree, docInfo.metadata.rev_tree[0], 1000);
var wasPreviouslyDeleted = utils.isDeleted(oldDoc);
var inConflict = (wasPreviouslyDeleted && deleted) ||
(!wasPreviouslyDeleted && newEdits && merged.conflicts !== 'new_leaf');
if (inConflict) {
results.push(makeErr(errors.REV_CONFLICT, docInfo._bulk_seq));
return processDocs();
}
docInfo.metadata.rev_tree = merged.tree;
writeDoc(docInfo, winningRev, deleted, processDocs);
}
function insertDoc(docInfo) {
var winningRev = merge.winningRev(docInfo.metadata);
var deleted = utils.isDeleted(docInfo.metadata, winningRev);
// Cant insert new deleted documents
if ('was_delete' in opts && deleted) {
results.push(errors.MISSING_DOC);
return processDocs();
}
writeDoc(docInfo, winningRev, deleted, processDocs);
}
// Insert sequence number into the error so we can sort later
function makeErr(err, seq) {
err._bulk_seq = seq;
return err;
}
function saveAttachment(docInfo, digest, data, callback) {
var objectStore = txn.objectStore(ATTACH_STORE);
objectStore.get(digest).onsuccess = function (e) {
var originalRefs = e.target.result && e.target.result.refs || {};
var ref = [docInfo.metadata.id, docInfo.metadata.rev].join('@');
var newAtt = {
digest: digest,
body: data,
refs: originalRefs
};
newAtt.refs[ref] = true;
objectStore.put(newAtt).onsuccess = function (e) {
utils.call(callback);
};
};
}
var txn;
preprocessAttachments(function () {
txn = idb.transaction([DOC_STORE, BY_SEQ_STORE, ATTACH_STORE, META_STORE],
'readwrite');
txn.onerror = idbError(callback);
txn.ontimeout = idbError(callback);
txn.oncomplete = complete;
processDocs();
});
};
function sortByBulkSeq(a, b) {
return a._bulk_seq - b._bulk_seq;
}
// First we look up the metadata in the ids database, then we fetch the
// current revision(s) from the by sequence store
api._get = function idb_get(id, opts, callback) {
var doc;
var metadata;
var err;
var txn;
opts = utils.clone(opts);
if (opts.ctx) {
txn = opts.ctx;
} else {
txn =
idb.transaction([DOC_STORE, BY_SEQ_STORE, ATTACH_STORE], 'readonly');
}
function finish() {
callback(err, {doc: doc, metadata: metadata, ctx: txn});
}
txn.objectStore(DOC_STORE).get(id).onsuccess = function (e) {
metadata = e.target.result;
// we can determine the result here if:
// 1. there is no such document
// 2. the document is deleted and we don't ask about specific rev
// When we ask with opts.rev we expect the answer to be either
// doc (possibly with _deleted=true) or missing error
if (!metadata) {
err = errors.MISSING_DOC;
return finish();
}
if (utils.isDeleted(metadata) && !opts.rev) {
err = errors.error(errors.MISSING_DOC, "deleted");
return finish();
}
var objectStore = txn.objectStore(BY_SEQ_STORE);
// metadata.winningRev was added later, so older DBs might not have it
var rev = opts.rev || metadata.winningRev || merge.winningRev(metadata);
var key = metadata.id + '::' + rev;
objectStore.index('_doc_id_rev').get(key).onsuccess = function (e) {
doc = e.target.result;
if (doc && doc._doc_id_rev) {
delete(doc._doc_id_rev);
}
if (!doc) {
err = errors.MISSING_DOC;
return finish();
}
finish();
};
};
};
api._getAttachment = function (attachment, opts, callback) {
var result;
var txn;
opts = utils.clone(opts);
if (opts.ctx) {
txn = opts.ctx;
} else {
txn =
idb.transaction([DOC_STORE, BY_SEQ_STORE, ATTACH_STORE], 'readonly');
}
var digest = attachment.digest;
var type = attachment.content_type;
txn.objectStore(ATTACH_STORE).get(digest).onsuccess = function (e) {
var data = e.target.result.body;
if (opts.encode) {
if (blobSupport) {
var reader = new FileReader();
reader.onloadend = function (e) {
var binary = utils.arrayBufferToBinaryString(this.result);
result = btoa(binary);
callback(null, result);
};
reader.readAsArrayBuffer(data);
} else {
result = data;
callback(null, result);
}
} else {
if (blobSupport) {
result = data;
} else {
data = utils.fixBinary(atob(data));
result = utils.createBlob([data], {type: type});
}
callback(null, result);
}
};
};
function allDocsQuery(totalRows, opts, callback) {
var start = 'startkey' in opts ? opts.startkey : false;
var end = 'endkey' in opts ? opts.endkey : false;
var key = 'key' in opts ? opts.key : false;
var skip = opts.skip || 0;
var limit = typeof opts.limit === 'number' ? opts.limit : -1;
var descending = 'descending' in opts && opts.descending ? 'prev' : null;
var manualDescEnd = false;
if (descending && start && end) {
// unfortunately IDB has a quirk where IDBKeyRange.bound is invalid if the
// start is less than the end, even in descending mode. Best bet
// is just to handle it manually in that case.
manualDescEnd = end;
end = false;
}
var keyRange;
try {
keyRange = start && end ? global.IDBKeyRange.bound(start, end)
: start ? (descending ? global.IDBKeyRange.upperBound(start)
: global.IDBKeyRange.lowerBound(start))
: end ? (descending ? global.IDBKeyRange.lowerBound(end)
: global.IDBKeyRange.upperBound(end))
: key ? global.IDBKeyRange.only(key) : null;
} catch (e) {
if (e.name === "DataError" && e.code === 0) {
// data error, start is less than end
return callback(null, {
total_rows : totalRows,
offset : opts.skip,
rows : []
});
} else {
return callback(errors.error(errors.IDB_ERROR, e.name, e.message));
}
}
var transaction = idb.transaction([DOC_STORE, BY_SEQ_STORE], 'readonly');
transaction.oncomplete = function () {
callback(null, {
total_rows: totalRows,
offset: opts.skip,
rows: results
});
};
var oStore = transaction.objectStore(DOC_STORE);
var oCursor = descending ? oStore.openCursor(keyRange, descending)
: oStore.openCursor(keyRange);
var results = [];
oCursor.onsuccess = function (e) {
if (!e.target.result) {
return;
}
var cursor = e.target.result;
var metadata = cursor.value;
// metadata.winningRev added later, some dbs might be missing it
var winningRev = metadata.winningRev || merge.winningRev(metadata);
function allDocsInner(metadata, data) {
if (utils.isLocalId(metadata.id)) {
return cursor['continue']();
}
var doc = {
id: metadata.id,
key: metadata.id,
value: {
rev: winningRev
}
};
if (opts.include_docs) {
doc.doc = data;
doc.doc._rev = winningRev;
if (doc.doc._doc_id_rev) {
delete(doc.doc._doc_id_rev);
}
if (opts.conflicts) {
doc.doc._conflicts = merge.collectConflicts(metadata);
}
for (var att in doc.doc._attachments) {
if (doc.doc._attachments.hasOwnProperty(att)) {
doc.doc._attachments[att].stub = true;
}
}
}
var deleted = utils.isDeleted(metadata, winningRev);
if (opts.deleted === 'ok') {
// deleted docs are okay with keys_requests
if (deleted) {
doc.value.deleted = true;
doc.doc = null;
}
results.push(doc);
} else if (!deleted && skip-- <= 0) {
if (manualDescEnd && doc.key < manualDescEnd) {
return;
}
results.push(doc);
if (--limit === 0) {
return;
}
}
cursor['continue']();
}
if (!opts.include_docs) {
allDocsInner(metadata);
} else {
var index = transaction.objectStore(BY_SEQ_STORE).index('_doc_id_rev');
var key = metadata.id + "::" + winningRev;
index.get(key).onsuccess = function (event) {
allDocsInner(cursor.value, event.target.result);
};
}
};
}
function countDocs(callback) {
if (docCount !== -1) {
return callback(null, docCount);
}
var count;
var txn = idb.transaction([DOC_STORE], 'readonly');
var index = txn.objectStore(DOC_STORE).index('deletedOrLocal');
index.count(global.IDBKeyRange.only("0")).onsuccess = function (e) {
count = e.target.result;
};
txn.onerror = idbError(callback);
txn.oncomplete = function () {
docCount = count;
callback(null, docCount);
};
}
api._allDocs = function idb_allDocs(opts, callback) {
// first count the total_rows
countDocs(function (err, totalRows) {
if (err) {
return callback(err);
}
if (opts.limit === 0) {
return callback(null, {
total_rows : totalRows,
offset : opts.skip,
rows : []
});
}
allDocsQuery(totalRows, opts, callback);
});
};
api._info = function idb_info(callback) {
countDocs(function (err, count) {
if (err) {
return callback(err);
}
if (idb === null) {
var error = new Error('db isn\'t open');
error.id = 'idbNull';
return callback(error);
}
var updateSeq = 0;
var txn = idb.transaction([META_STORE], 'readonly');
txn.objectStore(META_STORE).get(META_STORE).onsuccess = function (e) {
updateSeq = e.target.result && e.target.result.updateSeq || 0;
};
txn.oncomplete = function () {
callback(null, {
db_name: name,
doc_count: count,
update_seq: updateSeq
});
};
});
};
api._changes = function (opts) {
opts = utils.clone(opts);
if (opts.continuous) {
var id = name + ':' + utils.uuid();
IdbPouch.Changes.addListener(name, id, api, opts);
IdbPouch.Changes.notify(name);
return {
cancel: function () {
IdbPouch.Changes.removeListener(name, id);
}
};
}
var descending = opts.descending ? 'prev' : null;
var lastSeq = 0;
// Ignore the `since` parameter when `descending` is true
opts.since = opts.since && !descending ? opts.since : 0;
var limit = 'limit' in opts ? opts.limit : -1;
if (limit === 0) {
limit = 1; // per CouchDB _changes spec
}
var returnDocs;
if ('returnDocs' in opts) {
returnDocs = opts.returnDocs;
} else {
returnDocs = true;
}
var results = [];
var numResults = 0;
var filter = utils.filterChange(opts);
var txn;
function fetchChanges() {
txn = idb.transaction([DOC_STORE, BY_SEQ_STORE]);
txn.oncomplete = onTxnComplete;
var req;
if (descending) {
req = txn.objectStore(BY_SEQ_STORE)
.openCursor(global.IDBKeyRange.lowerBound(opts.since, true),
descending);
} else {
req = txn.objectStore(BY_SEQ_STORE)
.openCursor(global.IDBKeyRange.lowerBound(opts.since, true));
}
req.onsuccess = onsuccess;
req.onerror = onerror;
}
fetchChanges();
function onsuccess(event) {
var cursor = event.target.result;
if (!cursor) {
return;
}
var doc = cursor.value;
if (utils.isLocalId(doc._id) ||
(opts.doc_ids && opts.doc_ids.indexOf(doc._id) === -1)) {
return cursor['continue']();
}
var index = txn.objectStore(DOC_STORE);
index.get(doc._id).onsuccess = function (event) {
var metadata = event.target.result;
if (lastSeq < metadata.seq) {
lastSeq = metadata.seq;
}
// metadata.winningRev was only added later
var winningRev = metadata.winningRev || merge.winningRev(metadata);
if (doc._rev !== winningRev) {
return cursor['continue']();
}
delete doc['_doc_id_rev'];
var change = opts.processChange(doc, metadata, opts);
change.seq = cursor.key;
if (filter(change)) {
numResults++;
if (returnDocs) {
results.push(change);
}
opts.onChange(change);
}
if (numResults !== limit) {
cursor['continue']();
}
};
}
function onTxnComplete() {
if (!opts.continuous) {
opts.complete(null, {
results: results,
last_seq: lastSeq
});
}
}
};
api._close = function (callback) {
if (idb === null) {
return callback(errors.NOT_OPEN);
}
// https://developer.mozilla.org/en-US/docs/IndexedDB/IDBDatabase#close
// "Returns immediately and closes the connection in a separate thread..."
idb.close();
idb = null;
callback();
};
api._getRevisionTree = function (docId, callback) {
var txn = idb.transaction([DOC_STORE], 'readonly');
var req = txn.objectStore(DOC_STORE).get(docId);
req.onsuccess = function (event) {
var doc = event.target.result;
if (!doc) {
callback(errors.MISSING_DOC);
} else {
callback(null, doc.rev_tree);
}
};
};
// This function removes revisions of document docId
// which are listed in revs and sets this document
// revision to to rev_tree
api._doCompaction = function (docId, rev_tree, revs, callback) {
var txn = idb.transaction([DOC_STORE, BY_SEQ_STORE], 'readwrite');
var index = txn.objectStore(DOC_STORE);
index.get(docId).onsuccess = function (event) {
var metadata = event.target.result;
metadata.rev_tree = rev_tree;
var count = revs.length;
revs.forEach(function (rev) {
var index = txn.objectStore(BY_SEQ_STORE).index('_doc_id_rev');
var key = docId + "::" + rev;
index.getKey(key).onsuccess = function (e) {
var seq = e.target.result;
if (!seq) {
return;
}
txn.objectStore(BY_SEQ_STORE)['delete'](seq);
count--;
if (!count) {
txn.objectStore(DOC_STORE).put(metadata);
}
};
});
};
txn.oncomplete = function () {
utils.call(callback);
};
};
}
IdbPouch.valid = function () {
return global.indexedDB && isModernIdb();
};
IdbPouch.destroy = utils.toPromise(function (name, opts, callback) {
if (!('openReqList' in IdbPouch)) {
IdbPouch.openReqList = {};
}
IdbPouch.Changes.clearListeners(name);
//Close open request for "name" database to fix ie delay.
if (IdbPouch.openReqList[name] && IdbPouch.openReqList[name].result) {
IdbPouch.openReqList[name].result.close();
}
var req = global.indexedDB.deleteDatabase(name);
req.onsuccess = function () {
//Remove open request from the list.
if (IdbPouch.openReqList[name]) {
IdbPouch.openReqList[name] = null;
}
if (utils.hasLocalStorage()) {
delete global.localStorage[name];
}
callback(null, { 'ok': true });
};
req.onerror = idbError(callback);
});
IdbPouch.Changes = new utils.Changes();
module.exports = IdbPouch;
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../deps/errors":10,"../merge":16,"../utils":21}],5:[function(_dereq_,module,exports){
(function (global){
'use strict';
var utils = _dereq_('../utils');
var merge = _dereq_('../merge');
var errors = _dereq_('../deps/errors');
function quote(str) {
return "'" + str + "'";
}
var cachedDatabases = {};
var openDB = utils.getArguments(function (args) {
if (typeof global !== 'undefined') {
if (global.navigator && global.navigator.sqlitePlugin &&
global.navigator.sqlitePlugin.openDatabase) {
return navigator.sqlitePlugin.openDatabase
.apply(navigator.sqlitePlugin, args);
} else if (global.sqlitePlugin && global.sqlitePlugin.openDatabase) {
return global.sqlitePlugin.openDatabase
.apply(global.sqlitePlugin, args);
} else {
var db = cachedDatabases[args[0]];
if (!db) {
db = cachedDatabases[args[0]] =
global.openDatabase.apply(global, args);
}
return db;
}
}
});
var POUCH_VERSION = 1;
var POUCH_SIZE = 5 * 1024 * 1024;
var ADAPTER_VERSION = 2; // used to manage migrations
// The object stores created for each database
// DOC_STORE stores the document meta data, its revision history and state
var DOC_STORE = quote('document-store');
// BY_SEQ_STORE stores a particular version of a document, keyed by its
// sequence id
var BY_SEQ_STORE = quote('by-sequence');
// Where we store attachments
var ATTACH_STORE = quote('attach-store');
var META_STORE = quote('metadata-store');
// these indexes cover the ground for most allDocs queries
var BY_SEQ_STORE_DELETED_INDEX_SQL =
'CREATE INDEX IF NOT EXISTS \'by-seq-deleted-idx\' ON ' +
BY_SEQ_STORE + ' (seq, deleted)';
var DOC_STORE_LOCAL_INDEX_SQL =
'CREATE INDEX IF NOT EXISTS \'doc-store-local-idx\' ON ' +
DOC_STORE + ' (local, id)';
var DOC_STORE_WINNINGSEQ_INDEX_SQL =
'CREATE INDEX IF NOT EXISTS \'doc-winningseq-idx\' ON ' +
DOC_STORE + ' (winningseq)';
var DOC_STORE_AND_BY_SEQ_JOINER = BY_SEQ_STORE +
'.seq = ' + DOC_STORE + '.winningseq';
var SELECT_DOCS = BY_SEQ_STORE + '.seq AS seq, ' +
BY_SEQ_STORE + '.deleted AS deleted, ' +
BY_SEQ_STORE + '.json AS data, ' +
DOC_STORE + '.json AS metadata';
function select(selector, table, joiner, where, orderBy) {
return 'SELECT ' + selector + ' FROM ' +
(typeof table === 'string' ? table : table.join(' JOIN ')) +
(joiner ? (' ON ' + joiner) : '') +
(where ? (' WHERE ' +
(typeof where === 'string' ? where : where.join(' AND '))) : '') +
(orderBy ? (' ORDER BY ' + orderBy) : '');
}
function unknownError(callback) {
return function (event) {
// event may actually be a SQLError object, so report is as such
var errorNameMatch = event && event.constructor.toString()
.match(/function ([^\(]+)/);
var errorName = (errorNameMatch && errorNameMatch[1]) || event.type;
var errorReason = event.target || event.message;
callback(errors.error(errors.WSQ_ERROR, errorReason, errorName));
};
}
function decodeUtf8(str) {
return decodeURIComponent(window.escape(str));
}
function parseHexString(str, encoding) {
var result = '';
var charWidth = encoding === 'UTF-8' ? 2 : 4;
for (var i = 0, len = str.length; i < len; i += charWidth) {
var substring = str.substring(i, i + charWidth);
if (charWidth === 4) { // UTF-16, twiddle the bits
substring = substring.substring(2, 4) + substring.substring(0, 2);
}
result += String.fromCharCode(parseInt(substring, 16));
}
result = encoding === 'UTF-8' ? decodeUtf8(result) : result;
return result;
}
function WebSqlPouch(opts, callback) {
var api = this;
var instanceId = null;
var name = opts.name;
var idRequests = [];
var docCount = -1; // cache sqlite count(*) for performance
var encoding;
var db = openDB(name, POUCH_VERSION, name, POUCH_SIZE);
if (!db) {
return callback(errors.UNKNOWN_ERROR);
}
function dbCreated() {
// note the db name in case the browser upgrades to idb
if (utils.hasLocalStorage()) {
global.localStorage['_pouch__websqldb_' + name] = true;
}
callback(null, api);
}
// In this migration, we added the 'deleted' and 'local' columns to the
// by-seq and doc store tables.
// To preserve existing user data, we re-process all the existing JSON
// and add these values.
// Called migration2 because it corresponds to adapter version (db_version) #2
function runMigration2(tx) {
// index used for the join in the allDocs query
tx.executeSql(DOC_STORE_WINNINGSEQ_INDEX_SQL);
tx.executeSql('ALTER TABLE ' + BY_SEQ_STORE +
' ADD COLUMN deleted TINYINT(1) DEFAULT 0', [], function () {
tx.executeSql(BY_SEQ_STORE_DELETED_INDEX_SQL);
tx.executeSql('ALTER TABLE ' + DOC_STORE +
' ADD COLUMN local TINYINT(1) DEFAULT 0', [], function () {
tx.executeSql(DOC_STORE_LOCAL_INDEX_SQL);
var sql = 'SELECT ' + DOC_STORE + '.winningseq AS seq, ' + DOC_STORE +
'.json AS metadata FROM ' + BY_SEQ_STORE + ' JOIN ' + DOC_STORE +
' ON ' + BY_SEQ_STORE + '.seq = ' + DOC_STORE + '.winningseq';
tx.executeSql(sql, [], function (tx, result) {
var deleted = [];
var local = [];
for (var i = 0; i < result.rows.length; i++) {
var item = result.rows.item(i);
var seq = item.seq;
var metadata = JSON.parse(item.metadata);
if (utils.isDeleted(metadata)) {
deleted.push(seq);
}
if (utils.isLocalId(metadata.id)) {
local.push(metadata.id);
}
}
tx.executeSql('UPDATE ' + DOC_STORE + 'SET local = 1 WHERE id IN (' +
local.map(function () {
return '?';
}).join(',') + ')', local);
tx.executeSql('UPDATE ' + BY_SEQ_STORE +
' SET deleted = 1 WHERE seq IN (' + deleted.map(function () {
return '?';
}).join(',') + ')', deleted);
});
});
});
}
function onGetInstanceId(tx) {
while (idRequests.length > 0) {
var idCallback = idRequests.pop();
idCallback(null, instanceId);
}
checkDbEncoding(tx);
}
function checkDbEncoding(tx) {
// check db encoding - utf-8 (chrome, opera) or utf-16 (safari)?
tx.executeSql('SELECT dbid, hex(dbid) AS hexId FROM ' + META_STORE, [],
function (err, result) {
var id = result.rows.item(0).dbid;
var hexId = result.rows.item(0).hexId;
encoding = (hexId.length === id.length * 2) ? 'UTF-8' : 'UTF-16';
}
);
}
function onGetVersion(tx, dbVersion) {
if (dbVersion === 0) {
// initial schema
var meta = 'CREATE TABLE IF NOT EXISTS ' + META_STORE +
' (update_seq, dbid, db_version INTEGER)';
var attach = 'CREATE TABLE IF NOT EXISTS ' + ATTACH_STORE +
' (digest, json, body BLOB)';
var doc = 'CREATE TABLE IF NOT EXISTS ' + DOC_STORE +
' (id unique, seq, json, winningseq, local TINYINT(1))';
var seq = 'CREATE TABLE IF NOT EXISTS ' + BY_SEQ_STORE +
' (seq INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, ' +
'doc_id_rev UNIQUE, json, deleted TINYINT(1))';
// creates
tx.executeSql(attach);
tx.executeSql(doc, [], function () {
tx.executeSql(DOC_STORE_WINNINGSEQ_INDEX_SQL);
tx.executeSql(DOC_STORE_LOCAL_INDEX_SQL);
});
tx.executeSql(seq, [], function () {
tx.executeSql(BY_SEQ_STORE_DELETED_INDEX_SQL);
});
tx.executeSql(meta, [], function () {
// mark the update_seq, db version, and new dbid
var initSeq = 'INSERT INTO ' + META_STORE +
' (update_seq, db_version, dbid) VALUES (?, ?, ?)';
instanceId = utils.uuid();
tx.executeSql(initSeq, [0, ADAPTER_VERSION, instanceId]);
onGetInstanceId(tx);
});
} else { // version > 0
if (dbVersion === 1) {
runMigration2(tx);
// mark the db version within this transaction
tx.executeSql('UPDATE ' + META_STORE + ' SET db_version = ' +
ADAPTER_VERSION);
} // in the future, add more migrations here
// notify db.id() callers
tx.executeSql('SELECT dbid FROM ' + META_STORE, [],
function (tx, result) {
instanceId = result.rows.item(0).dbid;
onGetInstanceId(tx);
});
}
}
function setup() {
db.transaction(function (tx) {
// first get the version
tx.executeSql('SELECT sql FROM sqlite_master WHERE tbl_name = ' +
META_STORE, [], function (tx, result) {
if (!result.rows.length) {
// database hasn't even been created yet (version 0)
onGetVersion(tx, 0);
} else if (!/db_version/.test(result.rows.item(0).sql)) {
// table was created, but without the new db_version column,
// so add it.
tx.executeSql('ALTER TABLE ' + META_STORE +
' ADD COLUMN db_version INTEGER', [], function () {
// before version 2, this column didn't even exist
onGetVersion(tx, 1);
});
} else { // column exists, we can safely get it
tx.executeSql('SELECT db_version FROM ' + META_STORE, [],
function (tx, result) {
var dbVersion = result.rows.item(0).db_version;
onGetVersion(tx, dbVersion);
});
}
});
}, unknownError(callback), dbCreated);
}
if (utils.isCordova() && typeof global !== 'undefined') {
//to wait until custom api is made in pouch.adapters before doing setup
global.addEventListener(name + '_pouch', function cordova_init() {
global.removeEventListener(name + '_pouch', cordova_init, false);
setup();
}, false);
} else {
setup();
}
api.type = function () {
return 'websql';
};
api._id = utils.toPromise(function (callback) {
callback(null, instanceId);
});
api._info = function (callback) {
db.readTransaction(function (tx) {
countDocs(tx, function (docCount) {
var sql = 'SELECT update_seq FROM ' + META_STORE;
tx.executeSql(sql, [], function (tx, result) {
var updateSeq = result.rows.item(0).update_seq;
callback(null, {
db_name: name,
doc_count: docCount,
update_seq: updateSeq
});
});
});
}, unknownError(callback));
};
api._bulkDocs = function (req, opts, callback) {
var newEdits = opts.new_edits;
var userDocs = req.docs;
var docsWritten = 0;
// Parse the docs, give them a sequence number for the result
var docInfos = userDocs.map(function (doc, i) {
var newDoc = utils.parseDoc(doc, newEdits);
newDoc._bulk_seq = i;
return newDoc;
});
var docInfoErrors = docInfos.filter(function (docInfo) {
return docInfo.error;
});
if (docInfoErrors.length) {
return callback(docInfoErrors[0]);
}
var tx;
var results = [];
var fetchedDocs = {};
function sortByBulkSeq(a, b) {
return a._bulk_seq - b._bulk_seq;
}
function complete(event) {
var aresults = [];
results.sort(sortByBulkSeq);
results.forEach(function (result) {
delete result._bulk_seq;
if (result.error) {
aresults.push(result);
return;
}
var metadata = result.metadata;
var rev = merge.winningRev(metadata);
aresults.push({
ok: true,
id: metadata.id,
rev: rev
});
if (utils.isLocalId(metadata.id)) {
return;
}
docsWritten++;
WebSqlPouch.Changes.notify(name);
WebSqlPouch.Changes.notifyLocalWindows(name);
});
var updateseq = 'SELECT update_seq FROM ' + META_STORE;
tx.executeSql(updateseq, [], function (tx, result) {
var update_seq = result.rows.item(0).update_seq + docsWritten;
var sql = 'UPDATE ' + META_STORE + ' SET update_seq=?';
tx.executeSql(sql, [update_seq], function () {
callback(null, aresults);
});
});
}
function preprocessAttachment(att, finish) {
if (att.stub) {
return finish();
}
if (typeof att.data === 'string') {
try {
att.data = atob(att.data);
} catch (e) {
var err = errors.error(errors.BAD_ARG,
"Attachments need to be base64 encoded");
return callback(err);
}
var data = utils.fixBinary(att.data);
att.data = utils.createBlob([data], {type: att.content_type});
}
var reader = new FileReader();
reader.onloadend = function (e) {
var binary = utils.arrayBufferToBinaryString(this.result);
att.data = binary;
att.digest = 'md5-' + utils.MD5(binary);
finish();
};
reader.readAsArrayBuffer(att.data);
}
function preprocessAttachments(callback) {
if (!docInfos.length) {
return callback();
}
var docv = 0;
docInfos.forEach(function (docInfo) {
var attachments = docInfo.data && docInfo.data._attachments ?
Object.keys(docInfo.data._attachments) : [];
var recv = 0;
if (!attachments.length) {
return done();
}
function processedAttachment() {
recv++;
if (recv === attachments.length) {
done();
}
}
for (var key in docInfo.data._attachments) {
if (docInfo.data._attachments.hasOwnProperty(key)) {
preprocessAttachment(docInfo.data._attachments[key],
processedAttachment);
}
}
});
function done() {
docv++;
if (docInfos.length === docv) {
callback();
}
}
}
function writeDoc(docInfo, deleted, callback, isUpdate) {
function finish() {
var data = docInfo.data;
var doc_id_rev = data._id + "::" + data._rev;
var deletedInt = deleted ? 1 : 0;
var fetchSql = select('seq', BY_SEQ_STORE, null, 'doc_id_rev=?');
tx.executeSql(fetchSql, [doc_id_rev], function (err, res) {
var sql, sqlArgs;
if (res.rows.length) {
sql = 'UPDATE ' + BY_SEQ_STORE +
' SET json=?, deleted=? WHERE doc_id_rev=?;';
sqlArgs = [JSON.stringify(data), deletedInt, doc_id_rev];
tx.executeSql(sql, sqlArgs, function (tx) {
dataWritten(tx, res.rows.item(0).seq);
});
} else {
sql = 'INSERT INTO ' + BY_SEQ_STORE +
' (doc_id_rev, json, deleted) VALUES (?, ?, ?);';
sqlArgs = [doc_id_rev, JSON.stringify(data), deletedInt];
tx.executeSql(sql, sqlArgs, function (tx, result) {
dataWritten(tx, result.insertId);
});
}
});
}
function collectResults(attachmentErr) {
if (!err) {
if (attachmentErr) {
err = attachmentErr;
callback(err);
} else if (recv === attachments.length) {
finish();
}
}
}
var err = null;
var recv = 0;
docInfo.data._id = docInfo.metadata.id;
docInfo.data._rev = docInfo.metadata.rev;
if (deleted) {
docInfo.data._deleted = true;
}
var attachments = docInfo.data._attachments ?
Object.keys(docInfo.data._attachments) : [];
function attachmentSaved(err) {
recv++;
collectResults(err);
}
for (var key in docInfo.data._attachments) {
if (!docInfo.data._attachments[key].stub) {
var data = docInfo.data._attachments[key].data;
delete docInfo.data._attachments[key].data;
var digest = docInfo.data._attachments[key].digest;
saveAttachment(docInfo, digest, data, attachmentSaved);
} else {
recv++;
collectResults();
}
}
if (!attachments.length) {
finish();
}
function dataWritten(tx, seq) {
docInfo.metadata.seq = seq;
delete docInfo.metadata.rev;
var mainRev = merge.winningRev(docInfo.metadata);
var sql = isUpdate ?
'UPDATE ' + DOC_STORE +
' SET seq=?, json=?, winningseq=(SELECT seq FROM ' + BY_SEQ_STORE +
' WHERE doc_id_rev=?) WHERE id=?'
: 'INSERT INTO ' + DOC_STORE +
' (id, seq, winningseq, json, local) VALUES (?, ?, ?, ?, ?);';
var metadataStr = JSON.stringify(docInfo.metadata);
var key = docInfo.metadata.id + "::" + mainRev;
var local = utils.isLocalId(docInfo.metadata.id) ? 1 : 0;
var params = isUpdate ?
[seq, metadataStr, key, docInfo.metadata.id] :
[docInfo.metadata.id, seq, seq, metadataStr, local];
tx.executeSql(sql, params, function () {
results.push(docInfo);
callback();
});
}
}
function updateDoc(oldDoc, docInfo) {
var merged =
merge.merge(oldDoc.rev_tree, docInfo.metadata.rev_tree[0], 1000);
var deleted = utils.isDeleted(docInfo.metadata);
var oldDocDeleted = utils.isDeleted(oldDoc);
var inConflict = (oldDocDeleted && deleted) ||
(!oldDocDeleted && newEdits && merged.conflicts !== 'new_leaf');
if (inConflict) {
results.push(makeErr(errors.REV_CONFLICT, docInfo._bulk_seq));
return processDocs();
}
docInfo.metadata.rev_tree = merged.tree;
writeDoc(docInfo, deleted, processDocs, true);
}
function insertDoc(docInfo) {
// Cant insert new deleted documents
var deleted = utils.isDeleted(docInfo.metadata);
if ('was_delete' in opts && deleted) {
results.push(errors.MISSING_DOC);
return processDocs();
}
writeDoc(docInfo, deleted, processDocs, false);
}
function processDocs() {
if (!docInfos.length) {
return complete();
}
var currentDoc = docInfos.shift();
var id = currentDoc.metadata.id;
if (id in fetchedDocs) {
updateDoc(fetchedDocs[id], currentDoc);
} else {
// if we have newEdits=false then we can update the same
// document twice in a single bulk docs call
fetchedDocs[id] = currentDoc.metadata;
insertDoc(currentDoc);
}
}
// Insert sequence number into the error so we can sort later
function makeErr(err, seq) {
err._bulk_seq = seq;
return err;
}
function saveAttachment(docInfo, digest, data, callback) {
var ref = [docInfo.metadata.id, docInfo.metadata.rev].join('@');
var newAtt = {digest: digest};
var sql = 'SELECT digest, json FROM ' + ATTACH_STORE + ' WHERE digest=?';
tx.executeSql(sql, [digest], function (tx, result) {
if (!result.rows.length) {
newAtt.refs = {};
newAtt.refs[ref] = true;
sql = 'INSERT INTO ' + ATTACH_STORE +
'(digest, json, body) VALUES (?, ?, ?)';
tx.executeSql(sql, [digest, JSON.stringify(newAtt), data],
function () {
callback();
});
} else {
newAtt.refs = JSON.parse(result.rows.item(0).json).refs;
sql = 'UPDATE ' + ATTACH_STORE + ' SET json=?, body=? WHERE digest=?';
tx.executeSql(sql, [JSON.stringify(newAtt), data, digest],
function () {
callback();
});
}
});
}
function metadataFetched(tx, results) {
for (var j = 0; j < results.rows.length; j++) {
var row = results.rows.item(j);
var id = parseHexString(row.hexId, encoding);
fetchedDocs[id] = JSON.parse(row.json);
}
processDocs();
}
preprocessAttachments(function () {
db.transaction(function (txn) {
tx = txn;
var sql = 'SELECT hex(id) AS hexId, json FROM ' + DOC_STORE +
' WHERE id IN ' + '(' +
docInfos.map(function () {return '?'; }).join(',') + ')';
var queryArgs = docInfos.map(function (d) { return d.metadata.id; });
tx.executeSql(sql, queryArgs, metadataFetched);
}, unknownError(callback), function () {
docCount = -1;
});
});
};
api._get = function (id, opts, callback) {
opts = utils.clone(opts);
var doc;
var metadata;
var err;
if (!opts.ctx) {
db.readTransaction(function (txn) {
opts.ctx = txn;
api._get(id, opts, callback);
});
return;
}
var tx = opts.ctx;
function finish() {
callback(err, {doc: doc, metadata: metadata, ctx: tx});
}
var sql;
var sqlArgs;
if (opts.rev) {
sql = select(
SELECT_DOCS,
[DOC_STORE, BY_SEQ_STORE],
null,
[BY_SEQ_STORE + '.doc_id_rev=?', DOC_STORE + '.id=?']);
sqlArgs = [id + '::' + opts.rev, id];
} else {
sql = select(
SELECT_DOCS,
[DOC_STORE, BY_SEQ_STORE],
DOC_STORE_AND_BY_SEQ_JOINER,
DOC_STORE + '.id=?');
sqlArgs = [id];
}
tx.executeSql(sql, sqlArgs, function (a, results) {
if (!results.rows.length) {
err = errors.MISSING_DOC;
return finish();
}
var item = results.rows.item(0);
metadata = JSON.parse(item.metadata);
if (item.deleted && !opts.rev) {
err = errors.error(errors.MISSING_DOC, 'deleted');
return finish();
}
doc = JSON.parse(item.data);
finish();
});
};
function countDocs(tx, callback) {
if (docCount !== -1) {
return callback(docCount);
}
// count the total rows
var sql = select(
'COUNT(' + DOC_STORE + '.id) AS \'num\'',
[DOC_STORE, BY_SEQ_STORE],
DOC_STORE_AND_BY_SEQ_JOINER,
[BY_SEQ_STORE + '.deleted=0', DOC_STORE + '.local=0']);
tx.executeSql(sql, [], function (tx, result) {
docCount = result.rows.item(0).num;
callback(docCount);
});
}
api._allDocs = function (opts, callback) {
var results = [];
var totalRows;
var start = 'startkey' in opts ? opts.startkey : false;
var end = 'endkey' in opts ? opts.endkey : false;
var key = 'key' in opts ? opts.key : false;
var descending = 'descending' in opts ? opts.descending : false;
var limit = 'limit' in opts ? opts.limit : -1;
var offset = 'skip' in opts ? opts.skip : 0;
var sqlArgs = [];
var criteria = [DOC_STORE + '.local = 0'];
if (key !== false) {
criteria.push(DOC_STORE + '.id = ?');
sqlArgs.push(key);
} else if (start !== false || end !== false) {
if (start !== false) {
criteria.push(DOC_STORE + '.id ' + (descending ? '<=' : '>=') + ' ?');
sqlArgs.push(start);
}
if (end !== false) {
criteria.push(DOC_STORE + '.id ' + (descending ? '>=' : '<=') + ' ?');
sqlArgs.push(end);
}
if (key !== false) {
criteria.push(DOC_STORE + '.id = ?');
sqlArgs.push(key);
}
}
if (opts.deleted !== 'ok') {
// report deleted if keys are specified
criteria.push(BY_SEQ_STORE + '.deleted = 0');
}
db.readTransaction(function (tx) {
// first count up the total rows
countDocs(tx, function (count) {
totalRows = count;
if (limit === 0) {
return;
}
// then actually fetch the documents
var sql = select(
SELECT_DOCS,
[DOC_STORE, BY_SEQ_STORE],
DOC_STORE_AND_BY_SEQ_JOINER,
criteria,
DOC_STORE + '.id ' + (descending ? 'DESC' : 'ASC')
);
sql += ' LIMIT ' + limit + ' OFFSET ' + offset;
tx.executeSql(sql, sqlArgs, function (tx, result) {
for (var i = 0, l = result.rows.length; i < l; i++) {
var item = result.rows.item(i);
var metadata = JSON.parse(item.metadata);
var data = JSON.parse(item.data);
var winningRev = data._rev;
var doc = {
id: metadata.id,
key: metadata.id,
value: {rev: winningRev}
};
if (opts.include_docs) {
doc.doc = data;
doc.doc._rev = winningRev;
if (opts.conflicts) {
doc.doc._conflicts = merge.collectConflicts(metadata);
}
for (var att in doc.doc._attachments) {
if (doc.doc._attachments.hasOwnProperty(att)) {
doc.doc._attachments[att].stub = true;
}
}
}
if (item.deleted) {
if (opts.deleted === 'ok') {
doc.value.deleted = true;
doc.doc = null;
} else {
continue;
}
}
results.push(doc);
}
});
});
}, unknownError(callback), function () {
callback(null, {
total_rows: totalRows,
offset: opts.skip,
rows: results
});
});
};
api._changes = function (opts) {
opts = utils.clone(opts);
if (opts.continuous) {
var id = name + ':' + utils.uuid();
WebSqlPouch.Changes.addListener(name, id, api, opts);
WebSqlPouch.Changes.notify(name);
return {
cancel: function () {
WebSqlPouch.Changes.removeListener(name, id);
}
};
}
var descending = opts.descending;
// Ignore the `since` parameter when `descending` is true
opts.since = opts.since && !descending ? opts.since : 0;
var limit = 'limit' in opts ? opts.limit : -1;
if (limit === 0) {
limit = 1; // per CouchDB _changes spec
}
var returnDocs;
if ('returnDocs' in opts) {
returnDocs = opts.returnDocs;
} else {
returnDocs = true;
}
var results = [];
var numResults = 0;
function fetchChanges() {
var criteria = [
DOC_STORE + '.seq > ' + opts.since,
DOC_STORE + '.local = 0'
];
var sqlArgs = [];
if (opts.doc_ids) {
criteria.push(DOC_STORE + '.id IN (' + opts.doc_ids.map(function () {
return '?';
}).join(',') + ')');
sqlArgs = opts.doc_ids;
}
var sql = select(SELECT_DOCS, [DOC_STORE, BY_SEQ_STORE],
DOC_STORE_AND_BY_SEQ_JOINER, criteria,
DOC_STORE + '.seq ' + (descending ? 'DESC' : 'ASC'));
var filter = utils.filterChange(opts);
if (!opts.view && !opts.filter) {
// we can just limit in the query
sql += ' LIMIT ' + limit;
}
db.readTransaction(function (tx) {
tx.executeSql(sql, sqlArgs, function (tx, result) {
var lastSeq = 0;
for (var i = 0, l = result.rows.length; i < l; i++) {
var res = result.rows.item(i);
var metadata = JSON.parse(res.metadata);
if (lastSeq < res.seq) {
lastSeq = res.seq;
}
var doc = JSON.parse(res.data);
var change = opts.processChange(doc, metadata, opts);
change.seq = res.seq;
if (filter(change)) {
numResults++;
if (returnDocs) {
results.push(change);
}
opts.onChange(change);
}
if (numResults === limit) {
break;
}
}
if (!opts.continuous) {
opts.complete(null, {
results: results,
last_seq: lastSeq
});
}
});
});
}
fetchChanges();
};
api._close = function (callback) {
//WebSQL databases do not need to be closed
callback();
};
api._getAttachment = function (attachment, opts, callback) {
var res;
var tx = opts.ctx;
var digest = attachment.digest;
var type = attachment.content_type;
var sql = 'SELECT hex(body) as body FROM ' + ATTACH_STORE +
' WHERE digest=?';
tx.executeSql(sql, [digest], function (tx, result) {
// sqlite normally stores data as utf8, so even the hex() function
// "encodes" the binary data in utf8/16 before returning it. yet hex()
// is the only way to get the full data, so we do this.
var data = parseHexString(result.rows.item(0).body, encoding);
if (opts.encode) {
res = btoa(data);
} else {
data = utils.fixBinary(data);
res = utils.createBlob([data], {type: type});
}
callback(null, res);
});
};
api._getRevisionTree = function (docId, callback) {
db.readTransaction(function (tx) {
var sql = 'SELECT json AS metadata FROM ' + DOC_STORE + ' WHERE id = ?';
tx.executeSql(sql, [docId], function (tx, result) {
if (!result.rows.length) {
callback(errors.MISSING_DOC);
} else {
var data = JSON.parse(result.rows.item(0).metadata);
callback(null, data.rev_tree);
}
});
});
};
api._doCompaction = function (docId, rev_tree, revs, callback) {
if (!revs.length) {
return callback();
}
db.transaction(function (tx) {
var sql = 'SELECT json AS metadata FROM ' + DOC_STORE + ' WHERE id = ?';
tx.executeSql(sql, [docId], function (tx, result) {
if (!result.rows.length) {
return utils.call(callback);
}
var metadata = JSON.parse(result.rows.item(0).metadata);
metadata.rev_tree = rev_tree;
// websql never calls callback if we do WHERE doc_id_rev IN (...)
var numDone = 0;
revs.forEach(function (rev) {
var docIdRev = docId + '::' + rev;
var sql = 'DELETE FROM ' + BY_SEQ_STORE + ' WHERE doc_id_rev = ?';
tx.executeSql(sql, [docIdRev], function (tx) {
if (++numDone === revs.length) {
var sql = 'UPDATE ' + DOC_STORE + ' SET json = ? WHERE id = ?';
tx.executeSql(sql, [JSON.stringify(metadata), docId],
function () {
callback();
});
}
});
});
});
});
};
}
WebSqlPouch.valid = function () {
if (typeof global !== 'undefined') {
if (global.navigator &&
global.navigator.sqlitePlugin &&
global.navigator.sqlitePlugin.openDatabase) {
return true;
} else if (global.sqlitePlugin && global.sqlitePlugin.openDatabase) {
return true;
} else if (global.openDatabase) {
return true;
}
}
return false;
};
WebSqlPouch.destroy = utils.toPromise(function (name, opts, callback) {
var db = openDB(name, POUCH_VERSION, name, POUCH_SIZE);
db.transaction(function (tx) {
var stores = [DOC_STORE, BY_SEQ_STORE, ATTACH_STORE, META_STORE];
stores.forEach(function (store) {
tx.executeSql('DROP TABLE IF EXISTS ' + store, []);
});
}, unknownError(callback), function () {
if (utils.hasLocalStorage()) {
delete global.localStorage['_pouch__websqldb_' + name];
delete global.localStorage[name];
}
callback(null, {'ok': true});
});
});
WebSqlPouch.Changes = new utils.Changes();
module.exports = WebSqlPouch;
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../deps/errors":10,"../merge":16,"../utils":21}],6:[function(_dereq_,module,exports){
'use strict';
var utils = _dereq_('./utils');
var merge = _dereq_('./merge');
var errors = _dereq_('./deps/errors');
var EE = _dereq_('events').EventEmitter;
var evalFilter = _dereq_('./evalFilter');
var evalView = _dereq_('./evalView');
module.exports = Changes;
utils.inherits(Changes, EE);
function Changes(db, opts, callback) {
EE.call(this);
var self = this;
this.db = db;
opts = opts ? utils.clone(opts) : {};
var oldComplete = callback || opts.complete || function () {};
var complete = opts.complete = utils.once(function (err, resp) {
if (err) {
self.emit('error', err);
} else {
self.emit('complete', resp);
}
self.removeAllListeners();
db.removeListener('destroyed', onDestroy);
});
if (oldComplete) {
self.on('complete', function (resp) {
oldComplete(null, resp);
});
self.on('error', function (err) {
oldComplete(err);
});
}
var oldOnChange = opts.onChange;
if (oldOnChange) {
self.on('change', oldOnChange);
}
function onDestroy() {
self.cancel();
}
db.once('destroyed', onDestroy);
opts.onChange = function (change) {
if (opts.isCancelled) {
return;
}
self.emit('change', change);
if (self.startSeq && self.startSeq <= change.seq) {
self.emit('uptodate');
self.startSeq = false;
}
if (change.deleted) {
self.emit('delete', change);
} else if (change.changes.length === 1 &&
change.changes[0].rev.slice(0, 2) === '1-') {
self.emit('create', change);
} else {
self.emit('update', change);
}
};
var promise = new utils.Promise(function (fulfill, reject) {
opts.complete = function (err, res) {
if (err) {
reject(err);
} else {
fulfill(res);
}
};
});
self.once('cancel', function () {
if (oldOnChange) {
self.removeListener('change', oldOnChange);
}
opts.complete(null, {status: 'cancelled'});
});
this.then = promise.then.bind(promise);
this['catch'] = promise['catch'].bind(promise);
this.then(function (result) {
complete(null, result);
}, complete);
if (!db.taskqueue.isReady) {
db.taskqueue.addTask(function () {
if (self.isCancelled) {
self.emit('cancel');
} else {
self.doChanges(opts);
}
});
} else {
self.doChanges(opts);
}
}
Changes.prototype.cancel = function () {
this.isCancelled = true;
if (this.db.taskqueue.isReady) {
this.emit('cancel');
}
};
function processChange(doc, metadata, opts) {
var changeList = [{rev: doc._rev}];
if (opts.style === 'all_docs') {
changeList = merge.collectLeaves(metadata.rev_tree)
.map(function (x) { return {rev: x.rev}; });
}
var change = {
id: metadata.id,
changes: changeList,
doc: doc
};
if (utils.isDeleted(metadata, doc._rev)) {
change.deleted = true;
}
if (opts.conflicts) {
change.doc._conflicts = merge.collectConflicts(metadata);
if (!change.doc._conflicts.length) {
delete change.doc._conflicts;
}
}
return change;
}
Changes.prototype.doChanges = function (opts) {
var self = this;
var callback = opts.complete;
opts = utils.clone(opts);
if ('live' in opts && !('continuous' in opts)) {
opts.continuous = opts.live;
}
opts.processChange = processChange;
if (!opts.since) {
opts.since = 0;
}
if (opts.since === 'latest') {
this.db.info().then(function (info) {
if (self.isCancelled) {
callback(null, {status: 'cancelled'});
return;
}
opts.since = info.update_seq - 1;
self.doChanges(opts);
}, callback);
return;
}
if (opts.continuous && opts.since !== 'latest') {
this.db.info().then(function (info) {
self.startSeq = info.update_seq - 1;
}, function (err) {
if (err.id === 'idbNull') {
//db closed before this returned
//thats ok
return;
}
throw err;
});
}
if (this.db.type() !== 'http' &&
opts.filter && typeof opts.filter === 'string') {
return this.filterChanges(opts);
}
if (!('descending' in opts)) {
opts.descending = false;
}
// 0 and 1 should return 1 document
opts.limit = opts.limit === 0 ? 1 : opts.limit;
opts.complete = callback;
var newPromise = this.db._changes(opts);
if (newPromise && typeof newPromise.cancel === 'function') {
var cancel = self.cancel;
self.cancel = utils.getArguments(function (args) {
newPromise.cancel();
cancel.apply(this, args);
});
}
};
Changes.prototype.filterChanges = function (opts) {
var self = this;
var callback = opts.complete;
if (opts.filter === '_view') {
if (!opts.view || typeof opts.view !== 'string') {
var err = new Error('`view` filter parameter is not provided.');
err.status = errors.BAD_REQUEST.status;
err.name = errors.BAD_REQUEST.name;
err.error = true;
callback(err);
return;
}
// fetch a view from a design doc, make it behave like a filter
var viewName = opts.view.split('/');
this.db.get('_design/' + viewName[0], function (err, ddoc) {
if (self.isCancelled) {
callback(null, {status: 'cancelled'});
return;
}
if (err) {
callback(err);
return;
}
if (ddoc && ddoc.views && ddoc.views[viewName[1]]) {
var filter = evalView(ddoc.views[viewName[1]].map);
opts.filter = filter;
self.doChanges(opts);
return;
}
var msg = ddoc.views ? 'missing json key: ' + viewName[1] :
'missing json key: views';
if (!err) {
err = new Error(msg);
err.status = errors.MISSING_DOC.status;
err.name = errors.MISSING_DOC.name;
err.error = true;
}
callback(err);
return;
});
} else {
// fetch a filter from a design doc
var filterName = opts.filter.split('/');
this.db.get('_design/' + filterName[0], function (err, ddoc) {
if (self.isCancelled) {
callback(null, {status: 'cancelled'});
return;
}
if (err) {
callback(err);
return;
}
if (ddoc && ddoc.filters && ddoc.filters[filterName[1]]) {
var filter = evalFilter(ddoc.filters[filterName[1]]);
opts.filter = filter;
self.doChanges(opts);
return;
} else {
var msg = (ddoc && ddoc.filters) ? 'missing json key: ' + filterName[1]
: 'missing json key: filters';
if (!err) {
err = new Error(msg);
err.status = errors.MISSING_DOC.status;
err.name = errors.MISSING_DOC.name;
err.error = true;
}
callback(err);
return;
}
});
}
};
},{"./deps/errors":10,"./evalFilter":13,"./evalView":14,"./merge":16,"./utils":21,"events":24}],7:[function(_dereq_,module,exports){
(function (global){
/*globals cordova */
"use strict";
var Adapter = _dereq_('./adapter');
var utils = _dereq_('./utils');
var TaskQueue = _dereq_('./taskqueue');
var Promise = utils.Promise;
function defaultCallback(err) {
if (err && global.debug) {
console.error(err);
}
}
utils.inherits(PouchDB, Adapter);
function PouchDB(name, opts, callback) {
if (!(this instanceof PouchDB)) {
return new PouchDB(name, opts, callback);
}
var self = this;
if (typeof opts === 'function' || typeof opts === 'undefined') {
callback = opts;
opts = {};
}
if (typeof name === 'object') {
opts = name;
name = undefined;
}
if (typeof callback === 'undefined') {
callback = defaultCallback;
}
opts = opts || {};
var oldCB = callback;
self.auto_compaction = opts.auto_compaction;
self.prefix = PouchDB.prefix;
Adapter.call(self);
self.taskqueue = new TaskQueue();
var promise = new Promise(function (fulfill, reject) {
callback = function (err, resp) {
if (err) {
return reject(err);
}
delete resp.then;
fulfill(resp);
};
opts = utils.clone(opts);
var originalName = opts.name || name;
var backend, error;
(function () {
try {
if (typeof originalName !== 'string') {
error = new Error('Missing/invalid DB name');
error.code = 400;
throw error;
}
backend = PouchDB.parseAdapter(originalName, opts);
opts.originalName = originalName;
opts.name = backend.name;
opts.adapter = opts.adapter || backend.adapter;
self._adapter = opts.adapter;
if (!PouchDB.adapters[opts.adapter]) {
error = new Error('Adapter is missing');
error.code = 404;
throw error;
}
if (!PouchDB.adapters[opts.adapter].valid()) {
error = new Error('Invalid Adapter');
error.code = 404;
throw error;
}
} catch (err) {
self.taskqueue.fail(err);
self.changes = utils.toPromise(function (opts) {
if (opts.complete) {
opts.complete(err);
}
});
}
}());
if (error) {
return reject(error); // constructor error, see above
}
self.adapter = opts.adapter;
// needs access to PouchDB;
self.replicate = {};
self.replicate.from = function (url, opts, callback) {
return PouchDB.replicate(url, self, opts, callback);
};
self.replicate.to = function (url, opts, callback) {
return PouchDB.replicate(self, url, opts, callback);
};
self.replicate.sync = function (dbName, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return utils.cancellableFun(function (api, _opts, promise) {
var sync = PouchDB.sync(self, dbName, opts, callback);
promise.cancel = sync.cancel;
}, self, opts);
};
self.destroy = utils.adapterFun('destroy', function (callback) {
var self = this;
self.info(function (err, info) {
if (err) {
return callback(err);
}
PouchDB.destroy(info.db_name, callback);
});
});
PouchDB.adapters[opts.adapter].call(self, opts, function (err, db) {
if (err) {
if (callback) {
self.taskqueue.fail(err);
callback(err);
}
return;
}
function destructionListener(event) {
if (event === 'destroyed') {
self.emit('destroyed');
PouchDB.removeListener(opts.name, destructionListener);
}
}
PouchDB.on(opts.name, destructionListener);
self.emit('created', self);
PouchDB.emit('created', opts.originalName);
self.taskqueue.ready(self);
callback(null, self);
});
if (opts.skipSetup) {
self.taskqueue.ready(self);
}
if (utils.isCordova()) {
//to inform websql adapter that we can use api
cordova.fireWindowEvent(opts.name + "_pouch", {});
}
});
promise.then(function (resp) {
oldCB(null, resp);
}, oldCB);
self.then = promise.then.bind(promise);
//prevent deoptimizing
(function () {
try {
self['catch'] = promise['catch'].bind(promise);
} catch (e) {}
}());
}
module.exports = PouchDB;
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./adapter":2,"./taskqueue":20,"./utils":21}],8:[function(_dereq_,module,exports){
"use strict";
var createBlob = _dereq_('./blob.js');
var errors = _dereq_('./errors');
var utils = _dereq_("../utils");
function ajax(options, adapterCallback) {
var requestCompleted = false;
var callback = utils.getArguments(function (args) {
if (requestCompleted) {
return;
}
adapterCallback.apply(this, args);
requestCompleted = true;
});
if (typeof options === "function") {
callback = options;
options = {};
}
options = utils.clone(options);
var defaultOptions = {
method : "GET",
headers: {},
json: true,
processData: true,
timeout: 10000,
cache: false
};
options = utils.extend(true, defaultOptions, options);
// cache-buster, specifically designed to work around IE's aggressive caching
// see http://www.dashbay.com/2011/05/internet-explorer-caches-ajax/
if (options.method === 'GET' && !options.cache) {
var hasArgs = options.url.indexOf('?') !== -1;
options.url += (hasArgs ? '&' : '?') + '_nonce=' + utils.uuid(16);
}
function onSuccess(obj, resp, cb) {
if (!options.binary && !options.json && options.processData &&
typeof obj !== 'string') {
obj = JSON.stringify(obj);
} else if (!options.binary && options.json && typeof obj === 'string') {
try {
obj = JSON.parse(obj);
} catch (e) {
// Probably a malformed JSON from server
return cb(e);
}
}
if (Array.isArray(obj)) {
obj = obj.map(function (v) {
var obj;
if (v.ok) {
return v;
} else if (v.error && v.error === 'conflict') {
obj = errors.REV_CONFLICT;
obj.id = v.id;
return obj;
} else if (v.error && v.error === 'forbidden') {
obj = errors.FORBIDDEN;
obj.id = v.id;
obj.reason = v.reason;
return obj;
} else if (v.missing) {
obj = errors.MISSING_DOC;
obj.missing = v.missing;
return obj;
} else {
return v;
}
});
}
cb(null, obj, resp);
}
function onError(err, cb) {
var errParsed, errObj, errType, key;
try {
errParsed = JSON.parse(err.responseText);
//would prefer not to have a try/catch clause
for (key in errors) {
if (errors.hasOwnProperty(key) &&
errors[key].name === errParsed.error) {
errType = errors[key];
break;
}
}
if (!errType) {
errType = errors.UNKNOWN_ERROR;
if (err.status) {
errType.status = err.status;
}
if (err.statusText) {
err.name = err.statusText;
}
}
errObj = errors.error(errType, errParsed.reason);
} catch (e) {
for (var key in errors) {
if (errors.hasOwnProperty(key) && errors[key].status === err.status) {
errType = errors[key];
break;
}
}
if (!errType) {
errType = errors.UNKNOWN_ERROR;
if (err.status) {
errType.status = err.status;
}
if (err.statusText) {
err.name = err.statusText;
}
}
errObj = errors.error(errType);
}
cb(errObj);
}
var timer;
var xhr;
if (options.xhr) {
xhr = new options.xhr();
} else {
xhr = new XMLHttpRequest();
}
xhr.open(options.method, options.url);
xhr.withCredentials = true;
if (options.json) {
options.headers.Accept = 'application/json';
options.headers['Content-Type'] = options.headers['Content-Type'] ||
'application/json';
if (options.body &&
options.processData &&
typeof options.body !== "string") {
options.body = JSON.stringify(options.body);
}
}
if (options.binary) {
xhr.responseType = 'arraybuffer';
}
var createCookie = function (name, value, days) {
var expires = "";
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
expires = "; expires=" + date.toGMTString();
}
document.cookie = name + "=" + value + expires + "; path=/";
};
for (var key in options.headers) {
if (key === 'Cookie') {
var cookie = options.headers[key].split('=');
createCookie(cookie[0], cookie[1], 10);
} else {
xhr.setRequestHeader(key, options.headers[key]);
}
}
if (!("body" in options)) {
options.body = null;
}
var abortReq = function () {
if (requestCompleted) {
return;
}
xhr.abort();
onError(xhr, callback);
};
xhr.onreadystatechange = function () {
if (xhr.readyState !== 4 || requestCompleted) {
return;
}
clearTimeout(timer);
if (xhr.status >= 200 && xhr.status < 300) {
var data;
if (options.binary) {
data = createBlob([xhr.response || ''], {
type: xhr.getResponseHeader('Content-Type')
});
} else {
data = xhr.responseText;
}
onSuccess(data, xhr, callback);
} else {
onError(xhr, callback);
}
};
if (options.timeout > 0) {
timer = setTimeout(abortReq, options.timeout);
xhr.onprogress = function () {
clearTimeout(timer);
timer = setTimeout(abortReq, options.timeout);
};
if (xhr.upload) { // does not exist in ie9
xhr.upload.onprogress = xhr.onprogress;
}
}
xhr.send(options.body);
return {abort: abortReq};
}
module.exports = ajax;
},{"../utils":21,"./blob.js":9,"./errors":10}],9:[function(_dereq_,module,exports){
(function (global){
"use strict";
//Abstracts constructing a Blob object, so it also works in older
//browsers that don't support the native Blob constructor. (i.e.
//old QtWebKit versions, at least).
function createBlob(parts, properties) {
parts = parts || [];
properties = properties || {};
try {
return new Blob(parts, properties);
} catch (e) {
if (e.name !== "TypeError") {
throw e;
}
var BlobBuilder = global.BlobBuilder ||
global.MSBlobBuilder ||
global.MozBlobBuilder ||
global.WebKitBlobBuilder;
var builder = new BlobBuilder();
for (var i = 0; i < parts.length; i += 1) {
builder.append(parts[i]);
}
return builder.getBlob(properties.type);
}
}
module.exports = createBlob;
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],10:[function(_dereq_,module,exports){
"use strict";
function PouchError(opts) {
this.status = opts.status;
this.name = opts.error;
this.message = opts.reason;
this.error = true;
}
PouchError.prototype__proto__ = Error.prototype;
PouchError.prototype.toString = function () {
return JSON.stringify({
status: this.status,
name: this.name,
message: this.message
});
};
exports.UNAUTHORIZED = new PouchError({
status: 401,
error: 'unauthorized',
reason: "Name or password is incorrect."
});
exports.MISSING_BULK_DOCS = new PouchError({
status: 400,
error: 'bad_request',
reason: "Missing JSON list of 'docs'"
});
exports.MISSING_DOC = new PouchError({
status: 404,
error: 'not_found',
reason: 'missing'
});
exports.REV_CONFLICT = new PouchError({
status: 409,
error: 'conflict',
reason: 'Document update conflict'
});
exports.INVALID_ID = new PouchError({
status: 400,
error: 'invalid_id',
reason: '_id field must contain a string'
});
exports.MISSING_ID = new PouchError({
status: 412,
error: 'missing_id',
reason: '_id is required for puts'
});
exports.RESERVED_ID = new PouchError({
status: 400,
error: 'bad_request',
reason: 'Only reserved document ids may start with underscore.'
});
exports.NOT_OPEN = new PouchError({
status: 412,
error: 'precondition_failed',
reason: 'Database not open so cannot close'
});
exports.UNKNOWN_ERROR = new PouchError({
status: 500,
error: 'unknown_error',
reason: 'Database encountered an unknown error'
});
exports.BAD_ARG = new PouchError({
status: 500,
error: 'badarg',
reason: 'Some query argument is invalid'
});
exports.INVALID_REQUEST = new PouchError({
status: 400,
error: 'invalid_request',
reason: 'Request was invalid'
});
exports.QUERY_PARSE_ERROR = new PouchError({
status: 400,
error: 'query_parse_error',
reason: 'Some query parameter is invalid'
});
exports.DOC_VALIDATION = new PouchError({
status: 500,
error: 'doc_validation',
reason: 'Bad special document member'
});
exports.BAD_REQUEST = new PouchError({
status: 400,
error: 'bad_request',
reason: 'Something wrong with the request'
});
exports.NOT_AN_OBJECT = new PouchError({
status: 400,
error: 'bad_request',
reason: 'Document must be a JSON object'
});
exports.DB_MISSING = new PouchError({
status: 404,
error: 'not_found',
reason: 'Database not found'
});
exports.IDB_ERROR = new PouchError({
status: 500,
error: 'indexed_db_went_bad',
reason: 'unknown'
});
exports.WSQ_ERROR = new PouchError({
status: 500,
error: 'web_sql_went_bad',
reason: 'unknown'
});
exports.LDB_ERROR = new PouchError({
status: 500,
error: 'levelDB_went_went_bad',
reason: 'unknown'
});
exports.FORBIDDEN = new PouchError({
status: 403,
error: 'forbidden',
reason: 'Forbidden by design doc validate_doc_update function'
});
exports.error = function (error, reason, name) {
function CustomPouchError(msg) {
this.message = reason;
if (name) {
this.name = name;
}
}
CustomPouchError.prototype = error;
return new CustomPouchError(reason);
};
},{}],11:[function(_dereq_,module,exports){
'use strict';
var Promise = _dereq_('../utils').Promise;
// this is essentially the "update sugar" function from daleharvey/pouchdb#1388
// the diffFun tells us what delta to apply to the doc. it either returns
// the doc, or false if it doesn't need to do an update after all
function upsert(db, docId, diffFun) {
return new Promise(function (fulfill, reject) {
if (docId && typeof docId === 'object') {
docId = docId._id;
}
if (typeof docId !== 'string') {
return reject(new Error('doc id is required'));
}
db.get(docId, function (err, doc) {
if (err) {
if (err.name !== 'not_found') {
return reject(err);
}
return fulfill(tryAndPut(db, diffFun({_id : docId}), diffFun));
}
var newDoc = diffFun(doc);
if (!newDoc) {
return fulfill(doc);
}
fulfill(tryAndPut(db, newDoc, diffFun));
});
});
}
function tryAndPut(db, doc, diffFun) {
return db.put(doc).then(null, function (err) {
if (err.name !== 'conflict') {
throw err;
}
return upsert(db, doc, diffFun);
});
}
module.exports = function (db, docId, diffFun, cb) {
if (typeof cb === 'function') {
upsert(db, docId, diffFun).then(function (resp) {
cb(null, resp);
}, cb);
} else {
return upsert(db, docId, diffFun);
}
};
},{"../utils":21}],12:[function(_dereq_,module,exports){
"use strict";
// BEGIN Math.uuid.js
/*!
Math.uuid.js (v1.4)
http://www.broofa.com
mailto:[email protected]
Copyright (c) 2010 Robert Kieffer
Dual licensed under the MIT and GPL licenses.
*/
/*
* Generate a random uuid.
*
* USAGE: Math.uuid(length, radix)
* length - the desired number of characters
* radix - the number of allowable values for each character.
*
* EXAMPLES:
* // No arguments - returns RFC4122, version 4 ID
* >>> Math.uuid()
* "92329D39-6F5C-4520-ABFC-AAB64544E172"
*
* // One argument - returns ID of the specified length
* >>> Math.uuid(15) // 15 character ID (default base=62)
* "VcydxgltxrVZSTV"
*
* // Two arguments - returns ID of the specified length, and radix.
* // (Radix must be <= 62)
* >>> Math.uuid(8, 2) // 8 character ID (base=2)
* "01001010"
* >>> Math.uuid(8, 10) // 8 character ID (base=10)
* "47473046"
* >>> Math.uuid(8, 16) // 8 character ID (base=16)
* "098F4D35"
*/
var chars = (
'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
'abcdefghijklmnopqrstuvwxyz'
).split('');
function getValue(radix) {
return 0 | Math.random() * radix;
}
function uuid(len, radix) {
radix = radix || chars.length;
var out = '';
var i = -1;
if (len) {
// Compact form
while (++i < len) {
out += chars[getValue(radix)];
}
return out;
}
// rfc4122, version 4 form
// Fill in random data. At i==19 set the high bits of clock sequence as
// per rfc4122, sec. 4.1.5
while (++i < 36) {
switch (i) {
case 8:
case 13:
case 18:
case 23:
out += '-';
break;
case 19:
out += chars[(getValue(16) & 0x3) | 0x8];
break;
default:
out += chars[getValue(16)];
}
}
return out;
}
module.exports = uuid;
},{}],13:[function(_dereq_,module,exports){
'use strict';
module.exports = evalFilter;
function evalFilter(input) {
/*jshint evil: true */
return eval([
'(function () { return ',
input,
' })()'
].join(''));
}
},{}],14:[function(_dereq_,module,exports){
'use strict';
module.exports = evalView;
function evalView(input) {
/*jshint evil: true */
return eval([
'(function () {',
' return function (doc) {',
' var emitted = false;',
' var emit = function (a, b) {',
' emitted = true;',
' };',
' var view = ' + input + ';',
' view(doc);',
' if (emitted) {',
' return true;',
' }',
' }',
'})()'
].join('\n'));
}
},{}],15:[function(_dereq_,module,exports){
(function (process){
"use strict";
var PouchDB = _dereq_('./setup');
module.exports = PouchDB;
PouchDB.ajax = _dereq_('./deps/ajax');
PouchDB.extend = _dereq_('extend');
PouchDB.utils = _dereq_('./utils');
PouchDB.Errors = _dereq_('./deps/errors');
PouchDB.replicate = _dereq_('./replicate').replicate;
PouchDB.sync = _dereq_('./sync');
PouchDB.version = _dereq_('./version');
var httpAdapter = _dereq_('./adapters/http');
PouchDB.adapter('http', httpAdapter);
PouchDB.adapter('https', httpAdapter);
PouchDB.adapter('idb', _dereq_('./adapters/idb'));
PouchDB.adapter('websql', _dereq_('./adapters/websql'));
PouchDB.plugin(_dereq_('pouchdb-mapreduce'));
if (!process.browser) {
var ldbAdapter = _dereq_('./adapters/leveldb');
PouchDB.adapter('ldb', ldbAdapter);
PouchDB.adapter('leveldb', ldbAdapter);
}
}).call(this,_dereq_("/Users/cmetcalf/pouchdb/node_modules/browserify/node_modules/insert-module-globals/node_modules/process/browser.js"))
},{"./adapters/http":3,"./adapters/idb":4,"./adapters/leveldb":23,"./adapters/websql":5,"./deps/ajax":8,"./deps/errors":10,"./replicate":17,"./setup":18,"./sync":19,"./utils":21,"./version":1,"/Users/cmetcalf/pouchdb/node_modules/browserify/node_modules/insert-module-globals/node_modules/process/browser.js":25,"extend":26,"pouchdb-mapreduce":48}],16:[function(_dereq_,module,exports){
'use strict';
var utils = _dereq_('./utils');
// for a better overview of what this is doing, read:
// https://github.com/apache/couchdb/blob/master/src/couchdb/couch_key_tree.erl
//
// But for a quick intro, CouchDB uses a revision tree to store a documents
// history, A -> B -> C, when a document has conflicts, that is a branch in the
// tree, A -> (B1 | B2 -> C), We store these as a nested array in the format
//
// KeyTree = [Path ... ]
// Path = {pos: position_from_root, ids: Tree}
// Tree = [Key, Opts, [Tree, ...]], in particular single node: [Key, []]
// Turn a path as a flat array into a tree with a single branch
function pathToTree(path) {
var doc = path.shift();
var root = [doc.id, doc.opts, []];
var leaf = root;
var nleaf;
while (path.length) {
doc = path.shift();
nleaf = [doc.id, doc.opts, []];
leaf[2].push(nleaf);
leaf = nleaf;
}
return root;
}
// Merge two trees together
// The roots of tree1 and tree2 must be the same revision
function mergeTree(in_tree1, in_tree2) {
var queue = [{tree1: in_tree1, tree2: in_tree2}];
var conflicts = false;
while (queue.length > 0) {
var item = queue.pop();
var tree1 = item.tree1;
var tree2 = item.tree2;
if (tree1[1].status || tree2[1].status) {
tree1[1].status =
(tree1[1].status === 'available' ||
tree2[1].status === 'available') ? 'available' : 'missing';
}
for (var i = 0; i < tree2[2].length; i++) {
if (!tree1[2][0]) {
conflicts = 'new_leaf';
tree1[2][0] = tree2[2][i];
continue;
}
var merged = false;
for (var j = 0; j < tree1[2].length; j++) {
if (tree1[2][j][0] === tree2[2][i][0]) {
queue.push({tree1: tree1[2][j], tree2: tree2[2][i]});
merged = true;
}
}
if (!merged) {
conflicts = 'new_branch';
tree1[2].push(tree2[2][i]);
tree1[2].sort();
}
}
}
return {conflicts: conflicts, tree: in_tree1};
}
function doMerge(tree, path, dontExpand) {
var restree = [];
var conflicts = false;
var merged = false;
var res;
if (!tree.length) {
return {tree: [path], conflicts: 'new_leaf'};
}
tree.forEach(function (branch) {
if (branch.pos === path.pos && branch.ids[0] === path.ids[0]) {
// Paths start at the same position and have the same root, so they need
// merged
res = mergeTree(branch.ids, path.ids);
restree.push({pos: branch.pos, ids: res.tree});
conflicts = conflicts || res.conflicts;
merged = true;
} else if (dontExpand !== true) {
// The paths start at a different position, take the earliest path and
// traverse up until it as at the same point from root as the path we
// want to merge. If the keys match we return the longer path with the
// other merged After stemming we dont want to expand the trees
var t1 = branch.pos < path.pos ? branch : path;
var t2 = branch.pos < path.pos ? path : branch;
var diff = t2.pos - t1.pos;
var candidateParents = [];
var trees = [];
trees.push({ids: t1.ids, diff: diff, parent: null, parentIdx: null});
while (trees.length > 0) {
var item = trees.pop();
if (item.diff === 0) {
if (item.ids[0] === t2.ids[0]) {
candidateParents.push(item);
}
continue;
}
if (!item.ids) {
continue;
}
/*jshint loopfunc:true */
item.ids[2].forEach(function (el, idx) {
trees.push(
{ids: el, diff: item.diff - 1, parent: item.ids, parentIdx: idx});
});
}
var el = candidateParents[0];
if (!el) {
restree.push(branch);
} else {
res = mergeTree(el.ids, t2.ids);
el.parent[2][el.parentIdx] = res.tree;
restree.push({pos: t1.pos, ids: t1.ids});
conflicts = conflicts || res.conflicts;
merged = true;
}
} else {
restree.push(branch);
}
});
// We didnt find
if (!merged) {
restree.push(path);
}
restree.sort(function (a, b) {
return a.pos - b.pos;
});
return {
tree: restree,
conflicts: conflicts || 'internal_node'
};
}
// To ensure we dont grow the revision tree infinitely, we stem old revisions
function stem(tree, depth) {
// First we break out the tree into a complete list of root to leaf paths,
// we cut off the start of the path and generate a new set of flat trees
var stemmedPaths = PouchMerge.rootToLeaf(tree).map(function (path) {
var stemmed = path.ids.slice(-depth);
return {
pos: path.pos + (path.ids.length - stemmed.length),
ids: pathToTree(stemmed)
};
});
// Then we remerge all those flat trees together, ensuring that we dont
// connect trees that would go beyond the depth limit
return stemmedPaths.reduce(function (prev, current, i, arr) {
return doMerge(prev, current, true).tree;
}, [stemmedPaths.shift()]);
}
var PouchMerge = {};
PouchMerge.merge = function (tree, path, depth) {
// Ugh, nicer way to not modify arguments in place?
tree = utils.extend(true, [], tree);
path = utils.clone(path);
var newTree = doMerge(tree, path);
return {
tree: stem(newTree.tree, depth),
conflicts: newTree.conflicts
};
};
// We fetch all leafs of the revision tree, and sort them based on tree length
// and whether they were deleted, undeleted documents with the longest revision
// tree (most edits) win
// The final sort algorithm is slightly documented in a sidebar here:
// http://guide.couchdb.org/draft/conflicts.html
PouchMerge.winningRev = function (metadata) {
var leafs = [];
PouchMerge.traverseRevTree(metadata.rev_tree,
function (isLeaf, pos, id, something, opts) {
if (isLeaf) {
leafs.push({pos: pos, id: id, deleted: !!opts.deleted});
}
});
leafs.sort(function (a, b) {
if (a.deleted !== b.deleted) {
return a.deleted > b.deleted ? 1 : -1;
}
if (a.pos !== b.pos) {
return b.pos - a.pos;
}
return a.id < b.id ? 1 : -1;
});
return leafs[0].pos + '-' + leafs[0].id;
};
// Pretty much all below can be combined into a higher order function to
// traverse revisions
// The return value from the callback will be passed as context to all
// children of that node
PouchMerge.traverseRevTree = function (revs, callback) {
var toVisit = revs.slice();
var node;
while ((node = toVisit.pop())) {
var pos = node.pos;
var tree = node.ids;
var branches = tree[2];
var newCtx =
callback(branches.length === 0, pos, tree[0], node.ctx, tree[1]);
for (var i = 0, len = branches.length; i < len; i++) {
toVisit.push({pos: pos + 1, ids: branches[i], ctx: newCtx});
}
}
};
PouchMerge.collectLeaves = function (revs) {
var leaves = [];
PouchMerge.traverseRevTree(revs, function (isLeaf, pos, id, acc, opts) {
if (isLeaf) {
leaves.unshift({rev: pos + "-" + id, pos: pos, opts: opts});
}
});
leaves.sort(function (a, b) {
return b.pos - a.pos;
});
leaves.map(function (leaf) { delete leaf.pos; });
return leaves;
};
// returns revs of all conflicts that is leaves such that
// 1. are not deleted and
// 2. are different than winning revision
PouchMerge.collectConflicts = function (metadata) {
var win = PouchMerge.winningRev(metadata);
var leaves = PouchMerge.collectLeaves(metadata.rev_tree);
var conflicts = [];
leaves.forEach(function (leaf) {
if (leaf.rev !== win && !leaf.opts.deleted) {
conflicts.push(leaf.rev);
}
});
return conflicts;
};
PouchMerge.rootToLeaf = function (tree) {
var paths = [];
PouchMerge.traverseRevTree(tree, function (isLeaf, pos, id, history, opts) {
history = history ? history.slice(0) : [];
history.push({id: id, opts: opts});
if (isLeaf) {
var rootPos = pos + 1 - history.length;
paths.unshift({pos: rootPos, ids: history});
}
return history;
});
return paths;
};
module.exports = PouchMerge;
},{"./utils":21}],17:[function(_dereq_,module,exports){
'use strict';
var utils = _dereq_('./utils');
var Pouch = _dereq_('./index');
var EE = _dereq_('events').EventEmitter;
// We create a basic promise so the caller can cancel the replication possibly
// before we have actually started listening to changes etc
utils.inherits(Replication, EE);
function Replication(opts) {
EE.call(this);
this.cancelled = false;
}
Replication.prototype.cancel = function () {
this.cancelled = true;
this.emit('cancel');
};
// A batch of changes to be processed as a unit
function Batch() {
this.seq = 0;
this.changes = [];
this.docs = [];
}
// TODO: check CouchDB's replication id generation
// Generate a unique id particular to this replication
function genReplicationId(src, target, opts, callback) {
var filterFun = opts.filter ? opts.filter.toString() : '';
src.id(function (err, src_id) {
target.id(function (err, target_id) {
var queryData = src_id + target_id + filterFun +
JSON.stringify(opts.query_params) + opts.doc_ids;
callback('_local/' + utils.MD5(queryData));
});
});
}
// A checkpoint lets us restart replications from when they were last cancelled
function getCheckpoint(src, target, id) {
return target.get(id).then(function (targetDoc) {
return src.get(id).then(function (sourceDoc) {
if (targetDoc.last_seq === sourceDoc.last_seq) {
return (sourceDoc.last_seq);
}
return 0;
}).then(null, function (err) {
if (err.status !== 404) {
throw err;
}
return 0;
});
}).then(null, function (err) {
if (err.status !== 404) {
throw err;
}
return 0;
});
}
function writeCheckpoint(src, target, id, checkpoint, callback) {
function updateCheckpoint(db, callback) {
db.get(id, function (err, doc) {
if (err && err.status === 404) {
doc = {_id: id};
} else if (err) {
return callback(err);
}
doc.last_seq = checkpoint;
db.put(doc, callback);
});
}
updateCheckpoint(target, function (err, doc) {
if (err) { return callback(err); }
updateCheckpoint(src, function (err, doc) {
if (err) { return callback(err); }
callback();
});
});
}
function replicate(repId, src, target, opts, returnValue) {
var batches = []; // list of batches to be processed
var currentBatch; // the batch currently being processed
var pendingBatch = new Batch(); // next batch, not yet ready to be processed
var writingCheckpoint = false;
var changesCompleted = false;
var completeCalled = false;
var last_seq = 0;
var continuous = opts.continuous || opts.live || false;
var batch_size = opts.batch_size || 10;
var batches_limit = opts.batches_limit || 10;
var changesPending = false;
var changeCount = 0;
var changesPromise;
var doc_ids = opts.doc_ids;
var result = {
ok: true,
start_time: new Date(),
docs_read: 0,
docs_written: 0,
doc_write_failures: 0,
errors: []
};
var changesOpts = {};
function writeDocs() {
if (currentBatch.docs.length === 0) {
return;
}
var docs = currentBatch.docs;
return target.bulkDocs({
docs: docs
}, {
new_edits: false
}).then(function (res) {
if (returnValue.cancelled) {
replicationComplete();
throw new Error('cancelled');
}
var errors = [];
res.forEach(function (res) {
if (!res.ok) {
result.doc_write_failures++;
errors.push(new Error(res.reason || 'Unknown reason'));
}
});
if (errors.length > 0) {
var error = new Error('bulkDocs error');
error.other_errors = errors;
abortReplication('target.bulkDocs failed to write docs', error);
throw new Error('bulkWrite partial failure');
}
}, function (err) {
result.doc_write_failures += docs.length;
throw err;
});
}
function getNextDoc() {
var diffs = currentBatch.diffs;
var id = Object.keys(diffs)[0];
var revs = diffs[id].missing;
return src.get(id, {revs: true, open_revs: revs, attachments: true})
.then(function (docs) {
docs.forEach(function (doc) {
if (returnValue.cancelled) {
return replicationComplete();
}
if (doc.ok) {
result.docs_read++;
currentBatch.pendingRevs++;
currentBatch.docs.push(doc.ok);
delete diffs[doc.ok._id];
}
});
});
}
function getAllDocs() {
if (Object.keys(currentBatch.diffs).length > 0) {
return getNextDoc().then(getAllDocs);
} else {
return utils.Promise.resolve();
}
}
function getRevisionOneDocs() {
// filter out the generation 1 docs and get them
// leaving the non-generation one docs to be got otherwise
var ids = Object.keys(currentBatch.diffs).filter(function (id) {
var missing = currentBatch.diffs[id].missing;
return missing.length === 1 && missing[0].slice(0, 2) === '1-';
});
return src.allDocs({
keys: ids,
include_docs: true
}).then(function (res) {
if (returnValue.cancelled) {
replicationComplete();
throw (new Error('cancelled'));
}
res.rows.forEach(function (row, i) {
if (row.doc && !row.deleted &&
row.value.rev.slice(0, 2) === '1-' && (
!row.doc._attachments ||
Object.keys(row.doc._attachments).length === 0
)
) {
result.docs_read++;
currentBatch.pendingRevs++;
currentBatch.docs.push(row.doc);
delete currentBatch.diffs[row.id];
}
});
});
}
function getDocs() {
if (src.type() === 'http') {
return getRevisionOneDocs().then(getAllDocs);
} else {
return getAllDocs();
}
}
function finishBatch() {
return new utils.Promise(function (fulfill, reject) {
writingCheckpoint = true;
writeCheckpoint(
src,
target,
repId,
currentBatch.seq,
function (err, res) {
writingCheckpoint = false;
if (returnValue.cancelled) {
replicationComplete();
reject(new Error('cancelled'));
}
if (err) {
abortReplication('writeCheckpoint completed with error', err);
reject(err);
}
result.last_seq = last_seq = currentBatch.seq;
currentBatch.docs.forEach(function () {
result.docs_written++;
returnValue.emit('change', result);
});
currentBatch = undefined;
getChanges();
fulfill();
}
);
});
}
function getDiffs() {
return new utils.Promise(function (fulfill, reject) {
var diff = {};
currentBatch.changes.forEach(function (change) {
diff[change.id] = change.changes.map(function (x) {
return x.rev;
});
});
target.revsDiff(diff, function (err, diffs) {
if (returnValue.cancelled) {
replicationComplete();
reject(new Error('cancelled'));
} else if (err) {
reject(err);
} else {
currentBatch.diffs = diffs;
currentBatch.pendingRevs = 0;
fulfill();
}
});
});
}
function startNextBatch() {
if (
returnValue.cancelled ||
currentBatch
) {
return;
}
if (batches.length === 0) {
processPendingBatch(true);
return;
}
currentBatch = batches.shift();
getDiffs()
.then(getDocs)
.then(writeDocs)
.then(finishBatch)
.then(startNextBatch)
.then(null, function (err) {
abortReplication('batch processing terminated with error', err);
});
}
function processPendingBatch(immediate) {
if (pendingBatch.changes.length === 0) {
if (batches.length === 0 && !currentBatch) {
if (continuous || changesCompleted) {
returnValue.emit('uptodate');
}
if (changesCompleted) {
replicationComplete();
}
}
return;
}
if (
immediate ||
changesCompleted ||
pendingBatch.changes.length >= batch_size
) {
batches.push(pendingBatch);
pendingBatch = new Batch();
startNextBatch();
}
}
function abortReplication(reason, err) {
if (completeCalled) {
return;
}
result.ok = false;
result.status = 'aborted';
err.message = reason;
result.errors.push(err);
batches = [];
pendingBatch = new Batch();
replicationComplete();
}
function replicationComplete() {
if (completeCalled) {
return;
}
if (returnValue.cancelled) {
result.status = 'cancelled';
if (writingCheckpoint) {
return;
}
}
result.status = result.status || 'complete';
result.end_time = new Date();
result.last_seq = last_seq;
completeCalled = returnValue.cancelled = true;
if (result.errors.length > 0) {
var error = result.errors.pop();
if (result.errors.length > 0) {
error.other_errors = result.errors;
}
error.result = result;
returnValue.emit('error', error);
} else {
returnValue.emit('complete', result);
}
}
function onChange(change) {
if (returnValue.cancelled) {
return replicationComplete();
}
changeCount++;
if (changeCount > batch_size) {
changesPromise.cancel();
return;
}
if (
pendingBatch.changes.length === 0 &&
batches.length === 0 &&
!currentBatch
) {
returnValue.emit('outofdate');
}
pendingBatch.seq = change.seq;
pendingBatch.changes.push(change);
processPendingBatch(batches.length === 0);
}
function changesReject(err) {
changesPending = false;
if (returnValue.cancelled) {
return replicationComplete();
}
return abortReplication('changes rejected', err);
}
function changesFulfill(changes) {
changesPending = false;
if (returnValue.cancelled) {
return replicationComplete();
}
if (changes.status === 'cancelled') {
// Workaround to leveldb limitations
if (changeCount > 0) {
changesOpts.since += batch_size;
getChanges();
} else {
if (continuous) {
changesOpts.live = true;
getChanges();
} else {
changesCompleted = true;
}
}
} else if (changes.last_seq > changesOpts.since) {
if (changes.last_seq > changesOpts.since + batch_size) {
changesOpts.since += batch_size;
} else {
changesOpts.since = changes.last_seq;
}
getChanges();
} else {
if (continuous) {
changesOpts.live = true;
getChanges();
} else {
changesCompleted = true;
}
}
processPendingBatch(true);
}
function changesComplete(err, changes) {
// Changes promise doesn't resolve when promise is cancelled
// so use the old interface to handle this case.
if (changes && changes.status === 'cancelled') {
changesFulfill(changes);
}
}
function getChanges() {
if (
!changesPending &&
!changesCompleted &&
batches.length < batches_limit
) {
changesPending = true;
changeCount = 0;
changesPromise = src.changes(changesOpts);
changesPromise.then(
changesFulfill,
changesReject
);
}
}
function startChanges() {
getCheckpoint(src, target, repId).then(
function (checkpoint) {
last_seq = checkpoint;
changesOpts = {
since: last_seq,
limit: batch_size,
style: 'all_docs',
doc_ids: doc_ids,
onChange: onChange,
// changes promise doesn't resolve when cancelled so use old complete
complete: changesComplete,
returnDocs: false
};
if (opts.filter) {
changesOpts.filter = opts.filter;
}
if (opts.query_params) {
changesOpts.query_params = opts.query_params;
}
getChanges();
},
function (err) {
abortReplication('getCheckpoint rejected with ', err);
});
}
returnValue.once('cancel', function () {
replicationComplete();
});
if (typeof opts.onChange === 'function') {
returnValue.on('change', opts.onChange);
}
if (typeof opts.complete === 'function') {
returnValue.on('error', opts.complete);
returnValue.on('complete', function (result) {
opts.complete(null, result);
});
}
if (typeof opts.since === 'undefined') {
startChanges();
} else {
writeCheckpoint(src, target, repId, opts.since, function (err, res) {
if (returnValue.cancelled) {
return replicationComplete();
}
if (err) {
return abortReplication('writeCheckpoint completed with error', err);
}
last_seq = opts.since;
startChanges();
});
}
}
function toPouch(db) {
if (typeof db === 'string') {
return new Pouch(db);
} else if (db.then) {
return db;
} else {
return utils.Promise.resolve(db);
}
}
function replicateWrapper(src, target, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (typeof opts === 'undefined') {
opts = {};
}
if (!opts.complete) {
opts.complete = callback || function () {};
}
opts = utils.clone(opts);
opts.continuous = opts.continuous || opts.live;
var replicateRet = new Replication(opts);
toPouch(src).then(function (src) {
return toPouch(target).then(function (target) {
if (opts.server) {
if (typeof src.replicateOnServer !== 'function') {
throw new TypeError(
'Server replication not supported for ' + src.type() + ' adapter'
);
}
if (src.type() !== target.type()) {
throw new TypeError('Server replication' +
' for different adapter types (' +
src.type() + ' and ' + target.type() + ') is not supported'
);
}
src.replicateOnServer(target, opts, replicateRet);
} else {
genReplicationId(src, target, opts, function (repId) {
replicate(repId, src, target, opts, replicateRet);
});
}
});
}).then(null, function (err) {
opts.complete(err);
});
return replicateRet;
}
exports.replicate = replicateWrapper;
},{"./index":15,"./utils":21,"events":24}],18:[function(_dereq_,module,exports){
(function (global){
"use strict";
var PouchDB = _dereq_("./constructor");
var utils = _dereq_('./utils');
var Promise = utils.Promise;
var EventEmitter = _dereq_('events').EventEmitter;
PouchDB.adapters = {};
PouchDB.prefix = '_pouch_';
var eventEmitter = new EventEmitter();
var eventEmitterMethods = [
'on',
'addListener',
'emit',
'listeners',
'once',
'removeAllListeners',
'removeListener',
'setMaxListeners'
];
var preferredAdapters = ['levelalt', 'idb', 'leveldb', 'websql'];
eventEmitterMethods.forEach(function (method) {
PouchDB[method] = eventEmitter[method].bind(eventEmitter);
});
PouchDB.setMaxListeners(0);
PouchDB.parseAdapter = function (name, opts) {
var match = name.match(/([a-z\-]*):\/\/(.*)/);
var adapter, adapterName;
if (match) {
// the http adapter expects the fully qualified name
name = /http(s?)/.test(match[1]) ? match[1] + '://' + match[2] : match[2];
adapter = match[1];
if (!PouchDB.adapters[adapter].valid()) {
throw 'Invalid adapter';
}
return {name: name, adapter: match[1]};
}
// check for browsers that have been upgraded from websql-only to websql+idb
var skipIdb = 'idb' in PouchDB.adapters && 'websql' in PouchDB.adapters &&
utils.hasLocalStorage() &&
global.localStorage['_pouch__websqldb_' + PouchDB.prefix + name];
if (typeof opts !== 'undefined' && opts.db) {
adapterName = 'leveldb';
} else {
for (var i = 0; i < preferredAdapters.length; ++i) {
adapterName = preferredAdapters[i];
if (adapterName in PouchDB.adapters) {
if (skipIdb && adapterName === 'idb') {
continue; // keep using websql to avoid user data loss
}
break;
}
}
}
if (adapterName) {
adapter = PouchDB.adapters[adapterName];
var use_prefix = 'use_prefix' in adapter ? adapter.use_prefix : true;
return {
name: use_prefix ? PouchDB.prefix + name : name,
adapter: adapterName
};
}
throw 'No valid adapter found';
};
PouchDB.destroy = utils.toPromise(function (name, opts, callback) {
if (typeof opts === 'function' || typeof opts === 'undefined') {
callback = opts;
opts = {};
}
if (typeof name === 'object') {
opts = name;
name = undefined;
}
var backend = PouchDB.parseAdapter(opts.name || name, opts);
var dbName = backend.name;
var adapter = PouchDB.adapters[backend.adapter];
function destroyDb() {
// call destroy method of the particular adaptor
adapter.destroy(dbName, opts, function (err, resp) {
if (err) {
callback(err);
} else {
PouchDB.emit('destroyed', dbName);
//so we don't have to sift through all dbnames
PouchDB.emit(dbName, 'destroyed');
callback(null, resp || { 'ok': true });
}
});
}
var usePrefix = 'use_prefix' in adapter ? adapter.use_prefix : true;
var trueDbName = usePrefix ?
dbName.replace(new RegExp('^' + PouchDB.prefix), '') : dbName;
new PouchDB(trueDbName, {adapter : backend.adapter}, function (err, db) {
if (err) {
return callback(err);
}
db.get('_local/_pouch_dependentDbs', function (err, localDoc) {
if (err) {
if (err.name !== 'not_found') {
return callback(err);
} else { // no dependencies
return destroyDb();
}
}
var dependentDbs = localDoc.dependentDbs;
var deletedMap = Object.keys(dependentDbs).map(function (name) {
var trueName = usePrefix ?
name.replace(new RegExp('^' + PouchDB.prefix), '') : name;
return PouchDB.destroy(trueName, {adapter: backend.adapter});
});
Promise.all(deletedMap).then(destroyDb, function (error) {
callback(error);
});
});
});
});
PouchDB.allDbs = utils.toPromise(function (callback) {
var err = new Error('allDbs method removed');
err.stats = '400';
callback(err);
});
PouchDB.adapter = function (id, obj) {
if (obj.valid()) {
PouchDB.adapters[id] = obj;
}
};
PouchDB.plugin = function (obj) {
Object.keys(obj).forEach(function (id) {
PouchDB.prototype[id] = obj[id];
});
};
module.exports = PouchDB;
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./constructor":7,"./utils":21,"events":24}],19:[function(_dereq_,module,exports){
'use strict';
var utils = _dereq_('./utils');
var replicate = _dereq_('./replicate').replicate;
module.exports = sync;
function sync(db1, db2, opts, callback) {
if (opts instanceof Function) {
callback = opts;
opts = {};
}
if (opts === undefined) {
opts = {};
}
if (callback instanceof Function && !opts.complete) {
opts.complete = callback;
}
var pushReplication =
replicate(db1, db2, makeOpts(db1, opts, 'push', cancel), callback);
var pullReplication =
replicate(db2, db1, makeOpts(db2, opts, 'pull', cancel), callback);
function cancel() {
if (pushReplication) {
pushReplication.cancel();
}
if (pullReplication) {
pullReplication.cancel();
}
}
return {
push: pushReplication,
pull: pullReplication,
cancel: cancel
};
}
function complete(callback, direction, cancel) {
return function (err, res) {
if (err) {
// cancel both replications if either experiences problems
cancel();
}
if (res) {
res.direction = direction;
}
callback(err, res);
};
}
function onChange(src, callback) {
callback = callback || function () {};
return function (change) {
return {
source: src,
change: callback(change)
};
};
}
function makeOpts(src, opts, direction, cancel) {
opts = utils.clone(opts);
opts.complete = complete(opts.complete, direction, cancel);
opts.onChange = onChange(src, opts.onChange);
opts.continuous = opts.continuous || opts.live;
return opts;
}
},{"./replicate":17,"./utils":21}],20:[function(_dereq_,module,exports){
'use strict';
module.exports = TaskQueue;
function TaskQueue() {
this.isReady = false;
this.failed = false;
this.queue = [];
}
TaskQueue.prototype.execute = function () {
var d, func;
if (this.failed) {
while ((d = this.queue.shift())) {
func = d.parameters[d.parameters.length - 1];
if (typeof func === 'function') {
func(this.failed);
} else if (d.name === 'changes' && typeof func.complete === 'function') {
func.complete(this.failed);
}
}
} else if (this.isReady) {
while ((d = this.queue.shift())) {
if (typeof d === 'function') {
d();
} else {
d.task = this.db[d.name].apply(this.db, d.parameters);
}
}
}
};
TaskQueue.prototype.fail = function (err) {
this.failed = err;
this.execute();
};
TaskQueue.prototype.ready = function (db) {
if (this.failed) {
return false;
} else if (arguments.length === 0) {
return this.isReady;
}
this.isReady = db ? true: false;
this.db = db;
this.execute();
};
TaskQueue.prototype.addTask = function (name, parameters) {
if (typeof name === 'function') {
this.queue.push(name);
} else {
var task = { name: name, parameters: parameters };
this.queue.push(task);
if (this.failed) {
this.execute();
}
return task;
}
};
},{}],21:[function(_dereq_,module,exports){
(function (process,global){
/*jshint strict: false */
/*global chrome */
var crypto = _dereq_('crypto');
var md5 = _dereq_('md5-jkmyers');
var merge = _dereq_('./merge');
exports.extend = _dereq_('extend');
exports.ajax = _dereq_('./deps/ajax');
exports.createBlob = _dereq_('./deps/blob');
exports.uuid = _dereq_('./deps/uuid');
exports.getArguments = _dereq_('argsarray');
var buffer = _dereq_('./deps/buffer');
var errors = _dereq_('./deps/errors');
var EventEmitter = _dereq_('events').EventEmitter;
if (typeof global.Promise === 'function') {
exports.Promise = global.Promise;
} else {
exports.Promise = _dereq_('bluebird');
}
var Promise = exports.Promise;
function toObject(array) {
var obj = {};
array.forEach(function (item) { obj[item] = true; });
return obj;
}
// List of top level reserved words for doc
var reservedWords = toObject([
'_id',
'_rev',
'_attachments',
'_deleted',
'_revisions',
'_revs_info',
'_conflicts',
'_deleted_conflicts',
'_local_seq',
'_rev_tree'
]);
exports.clone = function (obj) {
return exports.extend(true, {}, obj);
};
exports.inherits = _dereq_('inherits');
// Determine id an ID is valid
// - invalid IDs begin with an underescore that does not begin '_design' or
// '_local'
// - any other string value is a valid id
// Returns the specific error object for each case
exports.invalidIdError = function (id) {
if (!id) {
return errors.MISSING_ID;
} else if (typeof id !== 'string') {
return errors.INVALID_ID;
} else if (/^_/.test(id) && !(/^_(design|local)/).test(id)) {
return errors.RESERVED_ID;
}
};
function isChromeApp() {
return (typeof chrome !== "undefined" &&
typeof chrome.storage !== "undefined" &&
typeof chrome.storage.local !== "undefined");
}
// Pretty dumb name for a function, just wraps callback calls so we dont
// to if (callback) callback() everywhere
exports.call = exports.getArguments(function (args) {
if (!args.length) {
return;
}
var fun = args.shift();
if (typeof fun === 'function') {
fun.apply(this, args);
}
});
exports.isLocalId = function (id) {
return (/^_local/).test(id);
};
// check if a specific revision of a doc has been deleted
// - metadata: the metadata object from the doc store
// - rev: (optional) the revision to check. defaults to winning revision
exports.isDeleted = function (metadata, rev) {
if (!rev) {
rev = merge.winningRev(metadata);
}
var dashIndex = rev.indexOf('-');
if (dashIndex !== -1) {
rev = rev.substring(dashIndex + 1);
}
var deleted = false;
merge.traverseRevTree(metadata.rev_tree,
function (isLeaf, pos, id, acc, opts) {
if (id === rev) {
deleted = !!opts.deleted;
}
});
return deleted;
};
exports.filterChange = function (opts) {
return function (change) {
var req = {};
var hasFilter = opts.filter && typeof opts.filter === 'function';
req.query = opts.query_params;
if (opts.filter && hasFilter && !opts.filter.call(this, change.doc, req)) {
return false;
}
if (opts.doc_ids && opts.doc_ids.indexOf(change.id) === -1) {
return false;
}
if (!opts.include_docs) {
delete change.doc;
} else {
for (var att in change.doc._attachments) {
if (change.doc._attachments.hasOwnProperty(att)) {
change.doc._attachments[att].stub = true;
}
}
}
return true;
};
};
// Preprocess documents, parse their revisions, assign an id and a
// revision for new writes that are missing them, etc
exports.parseDoc = function (doc, newEdits) {
var nRevNum;
var newRevId;
var revInfo;
var opts = {status: 'available'};
if (doc._deleted) {
opts.deleted = true;
}
if (newEdits) {
if (!doc._id) {
doc._id = exports.uuid();
}
newRevId = exports.uuid(32, 16).toLowerCase();
if (doc._rev) {
revInfo = /^(\d+)-(.+)$/.exec(doc._rev);
if (!revInfo) {
throw "invalid value for property '_rev'";
}
doc._rev_tree = [{
pos: parseInt(revInfo[1], 10),
ids: [revInfo[2], {status: 'missing'}, [[newRevId, opts, []]]]
}];
nRevNum = parseInt(revInfo[1], 10) + 1;
} else {
doc._rev_tree = [{
pos: 1,
ids : [newRevId, opts, []]
}];
nRevNum = 1;
}
} else {
if (doc._revisions) {
doc._rev_tree = [{
pos: doc._revisions.start - doc._revisions.ids.length + 1,
ids: doc._revisions.ids.reduce(function (acc, x) {
if (acc === null) {
return [x, opts, []];
} else {
return [x, {status: 'missing'}, [acc]];
}
}, null)
}];
nRevNum = doc._revisions.start;
newRevId = doc._revisions.ids[0];
}
if (!doc._rev_tree) {
revInfo = /^(\d+)-(.+)$/.exec(doc._rev);
if (!revInfo) {
return errors.BAD_ARG;
}
nRevNum = parseInt(revInfo[1], 10);
newRevId = revInfo[2];
doc._rev_tree = [{
pos: parseInt(revInfo[1], 10),
ids: [revInfo[2], opts, []]
}];
}
}
var error = exports.invalidIdError(doc._id);
if (error) {
return error;
}
doc._id = decodeURIComponent(doc._id);
doc._rev = [nRevNum, newRevId].join('-');
var result = {metadata : {}, data : {}};
for (var key in doc) {
if (doc.hasOwnProperty(key)) {
var specialKey = key[0] === '_';
if (specialKey && !reservedWords[key]) {
error = errors.error(errors.DOC_VALIDATION);
error.reason += ': ' + key;
return error;
} else if (specialKey && key !== '_attachments') {
result.metadata[key.slice(1)] = doc[key];
} else {
result.data[key] = doc[key];
}
}
}
return result;
};
exports.isCordova = function () {
return (typeof cordova !== "undefined" ||
typeof PhoneGap !== "undefined" ||
typeof phonegap !== "undefined");
};
exports.hasLocalStorage = function () {
if (isChromeApp()) {
return false;
}
try {
return global.localStorage;
} catch (e) {
return false;
}
};
exports.Changes = function () {
var api = {};
var eventEmitter = new EventEmitter();
var isChrome = isChromeApp();
var listeners = {};
var hasLocal = false;
if (!isChrome) {
hasLocal = exports.hasLocalStorage();
}
if (isChrome) {
chrome.storage.onChanged.addListener(function (e) {
// make sure it's event addressed to us
if (e.db_name != null) {
//object only has oldValue, newValue members
eventEmitter.emit(e.dbName.newValue);
}
});
} else if (hasLocal) {
if (global.addEventListener) {
global.addEventListener("storage", function (e) {
eventEmitter.emit(e.key);
});
} else {
global.attachEvent("storage", function (e) {
eventEmitter.emit(e.key);
});
}
}
api.addListener = function (dbName, id, db, opts) {
if (listeners[id]) {
return;
}
function eventFunction() {
db.changes({
include_docs: opts.include_docs,
conflicts: opts.conflicts,
continuous: false,
descending: false,
filter: opts.filter,
view: opts.view,
since: opts.since,
query_params: opts.query_params,
onChange: function (c) {
if (c.seq > opts.since && !opts.cancelled) {
opts.since = c.seq;
exports.call(opts.onChange, c);
}
}
});
}
listeners[id] = eventFunction;
eventEmitter.on(dbName, eventFunction);
};
api.removeListener = function (dbName, id) {
if (!(id in listeners)) {
return;
}
eventEmitter.removeListener(dbName, listeners[id]);
};
api.clearListeners = function (dbName) {
eventEmitter.removeAllListeners(dbName);
};
api.notifyLocalWindows = function (dbName) {
//do a useless change on a storage thing
//in order to get other windows's listeners to activate
if (isChrome) {
chrome.storage.local.set({dbName: dbName});
} else if (hasLocal) {
localStorage[dbName] = (localStorage[dbName] === "a") ? "b" : "a";
}
};
api.notify = function (dbName) {
eventEmitter.emit(dbName);
};
return api;
};
if (!process.browser || !('atob' in global)) {
exports.atob = function (str) {
var base64 = new buffer(str, 'base64');
// Node.js will just skip the characters it can't encode instead of
// throwing and exception
if (base64.toString('base64') !== str) {
throw ("Cannot base64 encode full string");
}
return base64.toString('binary');
};
} else {
exports.atob = function (str) {
return atob(str);
};
}
if (!process.browser || !('btoa' in global)) {
exports.btoa = function (str) {
return new buffer(str, 'binary').toString('base64');
};
} else {
exports.btoa = function (str) {
return btoa(str);
};
}
// From http://stackoverflow.com/questions/14967647/ (continues on next line)
// encode-decode-image-with-base64-breaks-image (2013-04-21)
exports.fixBinary = function (bin) {
if (!process.browser) {
// don't need to do this in Node
return bin;
}
var length = bin.length;
var buf = new ArrayBuffer(length);
var arr = new Uint8Array(buf);
for (var i = 0; i < length; i++) {
arr[i] = bin.charCodeAt(i);
}
return buf;
};
exports.once = function (fun) {
var called = false;
return exports.getArguments(function (args) {
if (called) {
console.trace();
throw new Error('once called more than once');
} else {
called = true;
fun.apply(this, args);
}
});
};
exports.toPromise = function (func) {
//create the function we will be returning
return exports.getArguments(function (args) {
var self = this;
var tempCB =
(typeof args[args.length - 1] === 'function') ? args.pop() : false;
// if the last argument is a function, assume its a callback
var usedCB;
if (tempCB) {
// if it was a callback, create a new callback which calls it,
// but do so async so we don't trap any errors
usedCB = function (err, resp) {
process.nextTick(function () {
tempCB(err, resp);
});
};
}
var promise = new Promise(function (fulfill, reject) {
try {
var callback = exports.once(function (err, mesg) {
if (err) {
reject(err);
} else {
fulfill(mesg);
}
});
// create a callback for this invocation
// apply the function in the orig context
args.push(callback);
func.apply(self, args);
} catch (e) {
reject(e);
}
});
// if there is a callback, call it back
if (usedCB) {
promise.then(function (result) {
usedCB(null, result);
}, usedCB);
}
promise.cancel = function () {
return this;
};
return promise;
});
};
exports.adapterFun = function (name, callback) {
return exports.toPromise(exports.getArguments(function (args) {
if (!this.taskqueue.isReady) {
this.taskqueue.addTask(name, args);
return;
}
callback.apply(this, args);
}));
};
//Can't find original post, but this is close
//http://stackoverflow.com/questions/6965107/ (continues on next line)
//converting-between-strings-and-arraybuffers
exports.arrayBufferToBinaryString = function (buffer) {
var binary = "";
var bytes = new Uint8Array(buffer);
var length = bytes.byteLength;
for (var i = 0; i < length; i++) {
binary += String.fromCharCode(bytes[i]);
}
return binary;
};
exports.cancellableFun = function (fun, self, opts) {
opts = opts ? exports.clone(true, {}, opts) : {};
var emitter = new EventEmitter();
var oldComplete = opts.complete || function () { };
var complete = opts.complete = exports.once(function (err, resp) {
if (err) {
oldComplete(err);
} else {
emitter.emit('end', resp);
oldComplete(null, resp);
}
emitter.removeAllListeners();
});
var oldOnChange = opts.onChange || function () {};
var lastChange = 0;
self.on('destroyed', function () {
emitter.removeAllListeners();
});
opts.onChange = function (change) {
oldOnChange(change);
if (change.seq <= lastChange) {
return;
}
lastChange = change.seq;
emitter.emit('change', change);
if (change.deleted) {
emitter.emit('delete', change);
} else if (change.changes.length === 1 &&
change.changes[0].rev.slice(0, 1) === '1-') {
emitter.emit('create', change);
} else {
emitter.emit('update', change);
}
};
var promise = new Promise(function (fulfill, reject) {
opts.complete = function (err, res) {
if (err) {
reject(err);
} else {
fulfill(res);
}
};
});
promise.then(function (result) {
complete(null, result);
}, complete);
// this needs to be overwridden by caller, dont fire complete until
// the task is ready
promise.cancel = function () {
promise.isCancelled = true;
if (self.taskqueue.isReady) {
opts.complete(null, {status: 'cancelled'});
}
};
if (!self.taskqueue.isReady) {
self.taskqueue.addTask(function () {
if (promise.isCancelled) {
opts.complete(null, {status: 'cancelled'});
} else {
fun(self, opts, promise);
}
});
} else {
fun(self, opts, promise);
}
promise.on = emitter.on.bind(emitter);
promise.once = emitter.once.bind(emitter);
promise.addListener = emitter.addListener.bind(emitter);
promise.removeListener = emitter.removeListener.bind(emitter);
promise.removeAllListeners = emitter.removeAllListeners.bind(emitter);
promise.setMaxListeners = emitter.setMaxListeners.bind(emitter);
promise.listeners = emitter.listeners.bind(emitter);
promise.emit = emitter.emit.bind(emitter);
return promise;
};
exports.Crypto = {};
exports.MD5 = exports.Crypto.MD5 = function (string) {
if (!process.browser) {
return crypto.createHash('md5').update(string).digest('hex');
} else {
return md5(string);
}
};
}).call(this,_dereq_("/Users/cmetcalf/pouchdb/node_modules/browserify/node_modules/insert-module-globals/node_modules/process/browser.js"),typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./deps/ajax":8,"./deps/blob":9,"./deps/buffer":23,"./deps/errors":10,"./deps/uuid":12,"./merge":16,"/Users/cmetcalf/pouchdb/node_modules/browserify/node_modules/insert-module-globals/node_modules/process/browser.js":25,"argsarray":22,"bluebird":31,"crypto":23,"events":24,"extend":26,"inherits":27,"md5-jkmyers":45}],22:[function(_dereq_,module,exports){
'use strict';
module.exports = argsArray;
function argsArray(fun) {
return function () {
var len = arguments.length;
if (len) {
var args = [];
var i = -1;
while (++i < len) {
args[i] = arguments[i];
}
return fun.call(this, args);
} else {
return fun.call(this, []);
}
};
}
},{}],23:[function(_dereq_,module,exports){
},{}],24:[function(_dereq_,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
function EventEmitter() {
this._events = this._events || {};
this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;
// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
if (!isNumber(n) || n < 0 || isNaN(n))
throw TypeError('n must be a positive number');
this._maxListeners = n;
return this;
};
EventEmitter.prototype.emit = function(type) {
var er, handler, len, args, i, listeners;
if (!this._events)
this._events = {};
// If there is no 'error' event listener then throw.
if (type === 'error') {
if (!this._events.error ||
(isObject(this._events.error) && !this._events.error.length)) {
er = arguments[1];
if (er instanceof Error) {
throw er; // Unhandled 'error' event
} else {
throw TypeError('Uncaught, unspecified "error" event.');
}
return false;
}
}
handler = this._events[type];
if (isUndefined(handler))
return false;
if (isFunction(handler)) {
switch (arguments.length) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
default:
len = arguments.length;
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
handler.apply(this, args);
}
} else if (isObject(handler)) {
len = arguments.length;
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
listeners = handler.slice();
len = listeners.length;
for (i = 0; i < len; i++)
listeners[i].apply(this, args);
}
return true;
};
EventEmitter.prototype.addListener = function(type, listener) {
var m;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events)
this._events = {};
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (this._events.newListener)
this.emit('newListener', type,
isFunction(listener.listener) ?
listener.listener : listener);
if (!this._events[type])
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
else if (isObject(this._events[type]))
// If we've already got an array, just append.
this._events[type].push(listener);
else
// Adding the second element, need to change to array.
this._events[type] = [this._events[type], listener];
// Check for listener leak
if (isObject(this._events[type]) && !this._events[type].warned) {
var m;
if (!isUndefined(this._maxListeners)) {
m = this._maxListeners;
} else {
m = EventEmitter.defaultMaxListeners;
}
if (m && m > 0 && this._events[type].length > m) {
this._events[type].warned = true;
console.error('(node) warning: possible EventEmitter memory ' +
'leak detected. %d listeners added. ' +
'Use emitter.setMaxListeners() to increase limit.',
this._events[type].length);
console.trace();
}
}
return this;
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function(type, listener) {
if (!isFunction(listener))
throw TypeError('listener must be a function');
var fired = false;
function g() {
this.removeListener(type, g);
if (!fired) {
fired = true;
listener.apply(this, arguments);
}
}
g.listener = listener;
this.on(type, g);
return this;
};
// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
var list, position, length, i;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events || !this._events[type])
return this;
list = this._events[type];
length = list.length;
position = -1;
if (list === listener ||
(isFunction(list.listener) && list.listener === listener)) {
delete this._events[type];
if (this._events.removeListener)
this.emit('removeListener', type, listener);
} else if (isObject(list)) {
for (i = length; i-- > 0;) {
if (list[i] === listener ||
(list[i].listener && list[i].listener === listener)) {
position = i;
break;
}
}
if (position < 0)
return this;
if (list.length === 1) {
list.length = 0;
delete this._events[type];
} else {
list.splice(position, 1);
}
if (this._events.removeListener)
this.emit('removeListener', type, listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners = function(type) {
var key, listeners;
if (!this._events)
return this;
// not listening for removeListener, no need to emit
if (!this._events.removeListener) {
if (arguments.length === 0)
this._events = {};
else if (this._events[type])
delete this._events[type];
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
for (key in this._events) {
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = {};
return this;
}
listeners = this._events[type];
if (isFunction(listeners)) {
this.removeListener(type, listeners);
} else {
// LIFO order
while (listeners.length)
this.removeListener(type, listeners[listeners.length - 1]);
}
delete this._events[type];
return this;
};
EventEmitter.prototype.listeners = function(type) {
var ret;
if (!this._events || !this._events[type])
ret = [];
else if (isFunction(this._events[type]))
ret = [this._events[type]];
else
ret = this._events[type].slice();
return ret;
};
EventEmitter.listenerCount = function(emitter, type) {
var ret;
if (!emitter._events || !emitter._events[type])
ret = 0;
else if (isFunction(emitter._events[type]))
ret = 1;
else
ret = emitter._events[type].length;
return ret;
};
function isFunction(arg) {
return typeof arg === 'function';
}
function isNumber(arg) {
return typeof arg === 'number';
}
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
function isUndefined(arg) {
return arg === void 0;
}
},{}],25:[function(_dereq_,module,exports){
// shim for using process in browser
var process = module.exports = {};
process.nextTick = (function () {
var canSetImmediate = typeof window !== 'undefined'
&& window.setImmediate;
var canPost = typeof window !== 'undefined'
&& window.postMessage && window.addEventListener
;
if (canSetImmediate) {
return function (f) { return window.setImmediate(f) };
}
if (canPost) {
var queue = [];
window.addEventListener('message', function (ev) {
var source = ev.source;
if ((source === window || source === null) && ev.data === 'process-tick') {
ev.stopPropagation();
if (queue.length > 0) {
var fn = queue.shift();
fn();
}
}
}, true);
return function nextTick(fn) {
queue.push(fn);
window.postMessage('process-tick', '*');
};
}
return function nextTick(fn) {
setTimeout(fn, 0);
};
})();
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.binding = function (name) {
throw new Error('process.binding is not supported');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],26:[function(_dereq_,module,exports){
var hasOwn = Object.prototype.hasOwnProperty;
var toString = Object.prototype.toString;
function isPlainObject(obj) {
if (!obj || toString.call(obj) !== '[object Object]' || obj.nodeType || obj.setInterval)
return false;
var has_own_constructor = hasOwn.call(obj, 'constructor');
var has_is_property_of_method = hasOwn.call(obj.constructor.prototype, 'isPrototypeOf');
// Not own constructor property must be Object
if (obj.constructor && !has_own_constructor && !has_is_property_of_method)
return false;
// Own properties are enumerated firstly, so to speed up,
// if last one is own, then all properties are own.
var key;
for ( key in obj ) {}
return key === undefined || hasOwn.call( obj, key );
};
module.exports = function extend() {
var options, name, src, copy, copyIsArray, clone,
target = arguments[0] || {},
i = 1,
length = arguments.length,
deep = false;
// Handle a deep copy situation
if ( typeof target === "boolean" ) {
deep = target;
target = arguments[1] || {};
// skip the boolean and the target
i = 2;
}
// Handle case when target is a string or something (possible in deep copy)
if ( typeof target !== "object" && typeof target !== "function") {
target = {};
}
for ( ; i < length; i++ ) {
// Only deal with non-null/undefined values
if ( (options = arguments[ i ]) != null ) {
// Extend the base object
for ( name in options ) {
src = target[ name ];
copy = options[ name ];
// Prevent never-ending loop
if ( target === copy ) {
continue;
}
// Recurse if we're merging plain objects or arrays
if ( deep && copy && ( isPlainObject(copy) || (copyIsArray = Array.isArray(copy)) ) ) {
if ( copyIsArray ) {
copyIsArray = false;
clone = src && Array.isArray(src) ? src : [];
} else {
clone = src && isPlainObject(src) ? src : {};
}
// Never move original objects, clone them
target[ name ] = extend( deep, clone, copy );
// Don't bring in undefined values
} else if ( copy !== undefined ) {
target[ name ] = copy;
}
}
}
}
// Return the modified object
return target;
};
},{}],27:[function(_dereq_,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
},{}],28:[function(_dereq_,module,exports){
'use strict';
module.exports = INTERNAL;
function INTERNAL() {}
},{}],29:[function(_dereq_,module,exports){
'use strict';
var INTERNAL = _dereq_('./INTERNAL');
var Promise = _dereq_('./promise');
var reject = _dereq_('./reject');
var resolve = _dereq_('./resolve');
module.exports = function all(iterable) {
if (Object.prototype.toString.call(iterable) !== '[object Array]') {
return reject(new TypeError('must be an array'));
}
var len = iterable.length;
if (!len) {
return resolve([]);
}
var values = [];
var resolved = 0;
var i = -1;
var promise = new Promise(INTERNAL);
function allResolver(value, i) {
resolve(value).then(function (outValue) {
values[i] = outValue;
if (++resolved === len) {
promise.resolve(values);
}
}, function (error) {
promise.reject(error);
});
}
while (++i < len) {
allResolver(iterable[i], i);
}
return promise;
};
},{"./INTERNAL":28,"./promise":33,"./reject":34,"./resolve":35}],30:[function(_dereq_,module,exports){
'use strict';
module.exports = getThen;
function getThen(obj) {
// Make sure we only access the accessor once as required by the spec
var then = obj && obj.then;
if (obj && typeof obj === 'object' && typeof then === 'function') {
return function appyThen() {
then.apply(obj, arguments);
};
}
}
},{}],31:[function(_dereq_,module,exports){
module.exports = exports = _dereq_('./promise');
exports.resolve = _dereq_('./resolve');
exports.reject = _dereq_('./reject');
exports.all = _dereq_('./all');
},{"./all":29,"./promise":33,"./reject":34,"./resolve":35}],32:[function(_dereq_,module,exports){
'use strict';
module.exports = once;
/* Wrap an arbitrary number of functions and allow only one of them to be
executed and only once */
function once() {
var called = 0;
return function wrapper(wrappedFunction) {
return function () {
if (called++) {
return;
}
wrappedFunction.apply(this, arguments);
};
};
}
},{}],33:[function(_dereq_,module,exports){
'use strict';
var unwrap = _dereq_('./unwrap');
var INTERNAL = _dereq_('./INTERNAL');
var once = _dereq_('./once');
var tryCatch = _dereq_('./tryCatch');
var getThen = _dereq_('./getThen');
// Lazy man's symbols for states
var PENDING = ['PENDING'],
FULFILLED = ['FULFILLED'],
REJECTED = ['REJECTED'];
module.exports = Promise;
function Promise(resolver) {
if (!(this instanceof Promise)) {
return new Promise(resolver);
}
if (typeof resolver !== 'function') {
throw new TypeError('reslover must be a function');
}
this.state = PENDING;
this.queue = [];
if (resolver !== INTERNAL) {
safelyResolveThenable(this, resolver);
}
}
Promise.prototype.resolve = function (value) {
var result = tryCatch(getThen, value);
if (result.status === 'error') {
return this.reject(result.value);
}
var thenable = result.value;
if (thenable) {
safelyResolveThenable(this, thenable);
} else {
this.state = FULFILLED;
this.outcome = value;
var i = -1;
var len = this.queue.length;
while (++i < len) {
this.queue[i].callFulfilled(value);
}
}
return this;
};
Promise.prototype.reject = function (error) {
this.state = REJECTED;
this.outcome = error;
var i = -1;
var len = this.queue.length;
while (++i < len) {
this.queue[i].callRejected(error);
}
return this;
};
Promise.prototype['catch'] = function (onRejected) {
return this.then(null, onRejected);
};
Promise.prototype.then = function (onFulfilled, onRejected) {
var onFulfilledFunc = typeof onFulfilled === 'function';
var onRejectedFunc = typeof onRejected === 'function';
if (!onFulfilledFunc && this.state === FULFILLED || !onRejected && this.state === REJECTED) {
return this;
}
var promise = new Promise(INTERNAL);
var thenHandler = {
promise: promise,
};
if (this.state !== REJECTED) {
if (onFulfilledFunc) {
thenHandler.callFulfilled = function (value) {
unwrap(promise, onFulfilled, value);
};
} else {
thenHandler.callFulfilled = function (value) {
promise.resolve(value);
};
}
}
if (this.state !== FULFILLED) {
if (onRejectedFunc) {
thenHandler.callRejected = function (value) {
unwrap(promise, onRejected, value);
};
} else {
thenHandler.callRejected = function (value) {
promise.reject(value);
};
}
}
if (this.state === FULFILLED) {
thenHandler.callFulfilled(this.outcome);
} else if (this.state === REJECTED) {
thenHandler.callRejected(this.outcome);
} else {
this.queue.push(thenHandler);
}
return promise;
};
function safelyResolveThenable(self, thenable) {
// Either fulfill, reject or reject with error
var onceWrapper = once();
var onError = onceWrapper(function (value) {
return self.reject(value);
});
var result = tryCatch(function () {
thenable(
onceWrapper(function (value) {
return self.resolve(value);
}),
onError
);
});
if (result.status === 'error') {
onError(result.value);
}
}
},{"./INTERNAL":28,"./getThen":30,"./once":32,"./tryCatch":36,"./unwrap":37}],34:[function(_dereq_,module,exports){
'use strict';
var Promise = _dereq_('./promise');
var INTERNAL = _dereq_('./INTERNAL');
module.exports = reject;
function reject(reason) {
var promise = new Promise(INTERNAL);
return promise.reject(reason);
}
},{"./INTERNAL":28,"./promise":33}],35:[function(_dereq_,module,exports){
'use strict';
var Promise = _dereq_('./promise');
var INTERNAL = _dereq_('./INTERNAL');
module.exports = resolve;
var FALSE = new Promise(INTERNAL).resolve(false);
var NULL = new Promise(INTERNAL).resolve(null);
var UNDEFINED = new Promise(INTERNAL).resolve(void 0);
var ZERO = new Promise(INTERNAL).resolve(0);
var EMPTYSTRING = new Promise(INTERNAL).resolve('');
function resolve(value) {
if (value) {
return new Promise(INTERNAL).resolve(value);
}
var valueType = typeof value;
switch (valueType) {
case 'boolean':
return FALSE;
case 'undefined':
return UNDEFINED;
case 'object':
return NULL;
case 'number':
return ZERO;
case 'string':
return EMPTYSTRING;
}
}
},{"./INTERNAL":28,"./promise":33}],36:[function(_dereq_,module,exports){
'use strict';
module.exports = tryCatch;
function tryCatch(func, value) {
var out = {};
try {
out.value = func(value);
out.status = 'success';
} catch (e) {
out.status = 'error';
out.value = e;
}
return out;
}
},{}],37:[function(_dereq_,module,exports){
'use strict';
var immediate = _dereq_('immediate');
module.exports = unwrap;
function unwrap(promise, func, value) {
immediate(function () {
var returnValue;
try {
returnValue = func(value);
} catch (e) {
return promise.reject(e);
}
if (returnValue === promise) {
promise.reject(new TypeError('Cannot resolve promise with itself'));
} else {
promise.resolve(returnValue);
}
});
}
},{"immediate":39}],38:[function(_dereq_,module,exports){
"use strict";
exports.test = function () {
return false;
};
},{}],39:[function(_dereq_,module,exports){
"use strict";
var types = [
_dereq_("./nextTick"),
_dereq_("./mutation"),
_dereq_("./postMessage"),
_dereq_("./messageChannel"),
_dereq_("./stateChange"),
_dereq_("./timeout")
];
var handlerQueue = [];
function drainQueue() {
var i = 0,
task,
innerQueue = handlerQueue;
handlerQueue = [];
/*jslint boss: true */
while (task = innerQueue[i++]) {
task();
}
}
var nextTick;
var i = -1;
var len = types.length;
while (++ i < len) {
if (types[i].test()) {
nextTick = types[i].install(drainQueue);
break;
}
}
module.exports = function (task) {
var len, i, args;
var nTask = task;
if (arguments.length > 1 && typeof task === "function") {
args = new Array(arguments.length - 1);
i = 0;
while (++i < arguments.length) {
args[i - 1] = arguments[i];
}
nTask = function () {
task.apply(undefined, args);
};
}
if ((len = handlerQueue.push(nTask)) === 1) {
nextTick(drainQueue);
}
return len;
};
module.exports.clear = function (n) {
if (n <= handlerQueue.length) {
handlerQueue[n - 1] = function () {};
}
return this;
};
},{"./messageChannel":40,"./mutation":41,"./nextTick":38,"./postMessage":42,"./stateChange":43,"./timeout":44}],40:[function(_dereq_,module,exports){
(function (global){
"use strict";
exports.test = function () {
return typeof global.MessageChannel !== "undefined";
};
exports.install = function (func) {
var channel = new global.MessageChannel();
channel.port1.onmessage = func;
return function () {
channel.port2.postMessage(0);
};
};
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],41:[function(_dereq_,module,exports){
(function (global){
"use strict";
//based off rsvp
//https://github.com/tildeio/rsvp.js/blob/master/lib/rsvp/async.js
var MutationObserver = global.MutationObserver || global.WebKitMutationObserver;
exports.test = function () {
return MutationObserver;
};
exports.install = function (handle) {
var observer = new MutationObserver(handle);
var element = global.document.createElement("div");
observer.observe(element, { attributes: true });
// Chrome Memory Leak: https://bugs.webkit.org/show_bug.cgi?id=93661
global.addEventListener("unload", function () {
observer.disconnect();
observer = null;
}, false);
return function () {
element.setAttribute("drainQueue", "drainQueue");
};
};
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],42:[function(_dereq_,module,exports){
(function (global){
"use strict";
exports.test = function () {
// The test against `importScripts` prevents this implementation from being installed inside a web worker,
// where `global.postMessage` means something completely different and can"t be used for this purpose.
if (!global.postMessage || global.importScripts) {
return false;
}
var postMessageIsAsynchronous = true;
var oldOnMessage = global.onmessage;
global.onmessage = function () {
postMessageIsAsynchronous = false;
};
global.postMessage("", "*");
global.onmessage = oldOnMessage;
return postMessageIsAsynchronous;
};
exports.install = function (func) {
var codeWord = "com.calvinmetcalf.setImmediate" + Math.random();
function globalMessage(event) {
if (event.source === global && event.data === codeWord) {
func();
}
}
if (global.addEventListener) {
global.addEventListener("message", globalMessage, false);
} else {
global.attachEvent("onmessage", globalMessage);
}
return function () {
global.postMessage(codeWord, "*");
};
};
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],43:[function(_dereq_,module,exports){
(function (global){
"use strict";
exports.test = function () {
return "document" in global && "onreadystatechange" in global.document.createElement("script");
};
exports.install = function (handle) {
return function () {
// Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
// into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
var scriptEl = global.document.createElement("script");
scriptEl.onreadystatechange = function () {
handle();
scriptEl.onreadystatechange = null;
scriptEl.parentNode.removeChild(scriptEl);
scriptEl = null;
};
global.document.documentElement.appendChild(scriptEl);
return handle;
};
};
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],44:[function(_dereq_,module,exports){
"use strict";
exports.test = function () {
return true;
};
exports.install = function (t) {
return function () {
setTimeout(t, 0);
};
};
},{}],45:[function(_dereq_,module,exports){
!function(a,b){"function"==typeof define&&define.amd?define(b):"object"==typeof exports?module.exports=b():a.md5=b()}(this,function(){function a(a,b){var g=a[0],h=a[1],i=a[2],j=a[3];g=c(g,h,i,j,b[0],7,-680876936),j=c(j,g,h,i,b[1],12,-389564586),i=c(i,j,g,h,b[2],17,606105819),h=c(h,i,j,g,b[3],22,-1044525330),g=c(g,h,i,j,b[4],7,-176418897),j=c(j,g,h,i,b[5],12,1200080426),i=c(i,j,g,h,b[6],17,-1473231341),h=c(h,i,j,g,b[7],22,-45705983),g=c(g,h,i,j,b[8],7,1770035416),j=c(j,g,h,i,b[9],12,-1958414417),i=c(i,j,g,h,b[10],17,-42063),h=c(h,i,j,g,b[11],22,-1990404162),g=c(g,h,i,j,b[12],7,1804603682),j=c(j,g,h,i,b[13],12,-40341101),i=c(i,j,g,h,b[14],17,-1502002290),h=c(h,i,j,g,b[15],22,1236535329),g=d(g,h,i,j,b[1],5,-165796510),j=d(j,g,h,i,b[6],9,-1069501632),i=d(i,j,g,h,b[11],14,643717713),h=d(h,i,j,g,b[0],20,-373897302),g=d(g,h,i,j,b[5],5,-701558691),j=d(j,g,h,i,b[10],9,38016083),i=d(i,j,g,h,b[15],14,-660478335),h=d(h,i,j,g,b[4],20,-405537848),g=d(g,h,i,j,b[9],5,568446438),j=d(j,g,h,i,b[14],9,-1019803690),i=d(i,j,g,h,b[3],14,-187363961),h=d(h,i,j,g,b[8],20,1163531501),g=d(g,h,i,j,b[13],5,-1444681467),j=d(j,g,h,i,b[2],9,-51403784),i=d(i,j,g,h,b[7],14,1735328473),h=d(h,i,j,g,b[12],20,-1926607734),g=e(g,h,i,j,b[5],4,-378558),j=e(j,g,h,i,b[8],11,-2022574463),i=e(i,j,g,h,b[11],16,1839030562),h=e(h,i,j,g,b[14],23,-35309556),g=e(g,h,i,j,b[1],4,-1530992060),j=e(j,g,h,i,b[4],11,1272893353),i=e(i,j,g,h,b[7],16,-155497632),h=e(h,i,j,g,b[10],23,-1094730640),g=e(g,h,i,j,b[13],4,681279174),j=e(j,g,h,i,b[0],11,-358537222),i=e(i,j,g,h,b[3],16,-722521979),h=e(h,i,j,g,b[6],23,76029189),g=e(g,h,i,j,b[9],4,-640364487),j=e(j,g,h,i,b[12],11,-421815835),i=e(i,j,g,h,b[15],16,530742520),h=e(h,i,j,g,b[2],23,-995338651),g=f(g,h,i,j,b[0],6,-198630844),j=f(j,g,h,i,b[7],10,1126891415),i=f(i,j,g,h,b[14],15,-1416354905),h=f(h,i,j,g,b[5],21,-57434055),g=f(g,h,i,j,b[12],6,1700485571),j=f(j,g,h,i,b[3],10,-1894986606),i=f(i,j,g,h,b[10],15,-1051523),h=f(h,i,j,g,b[1],21,-2054922799),g=f(g,h,i,j,b[8],6,1873313359),j=f(j,g,h,i,b[15],10,-30611744),i=f(i,j,g,h,b[6],15,-1560198380),h=f(h,i,j,g,b[13],21,1309151649),g=f(g,h,i,j,b[4],6,-145523070),j=f(j,g,h,i,b[11],10,-1120210379),i=f(i,j,g,h,b[2],15,718787259),h=f(h,i,j,g,b[9],21,-343485551),a[0]=l(g,a[0]),a[1]=l(h,a[1]),a[2]=l(i,a[2]),a[3]=l(j,a[3])}function b(a,b,c,d,e,f){return b=l(l(b,a),l(d,f)),l(b<<e|b>>>32-e,c)}function c(a,c,d,e,f,g,h){return b(c&d|~c&e,a,c,f,g,h)}function d(a,c,d,e,f,g,h){return b(c&e|d&~e,a,c,f,g,h)}function e(a,c,d,e,f,g,h){return b(c^d^e,a,c,f,g,h)}function f(a,c,d,e,f,g,h){return b(d^(c|~e),a,c,f,g,h)}function g(b){txt="";var c,d=b.length,e=[1732584193,-271733879,-1732584194,271733878];for(c=64;c<=b.length;c+=64)a(e,h(b.substring(c-64,c)));b=b.substring(c-64);var f=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0];for(c=0;c<b.length;c++)f[c>>2]|=b.charCodeAt(c)<<(c%4<<3);if(f[c>>2]|=128<<(c%4<<3),c>55)for(a(e,f),c=0;16>c;c++)f[c]=0;return f[14]=8*d,a(e,f),e}function h(a){var b,c=[];for(b=0;64>b;b+=4)c[b>>2]=a.charCodeAt(b)+(a.charCodeAt(b+1)<<8)+(a.charCodeAt(b+2)<<16)+(a.charCodeAt(b+3)<<24);return c}function i(a){for(var b="",c=0;4>c;c++)b+=m[a>>8*c+4&15]+m[a>>8*c&15];return b}function j(a){for(var b=0;b<a.length;b++)a[b]=i(a[b]);return a.join("")}function k(a){return j(g(a))}function l(a,b){return a+b&4294967295}function l(a,b){var c=(65535&a)+(65535&b),d=(a>>16)+(b>>16)+(c>>16);return d<<16|65535&c}var m="0123456789abcdef".split("");return"5d41402abc4b2a76b9719d911017c592"!=k("hello"),k});
},{}],46:[function(_dereq_,module,exports){
'use strict';
var utils = _dereq_('./utils');
var upsert = _dereq_('./upsert');
module.exports = function (sourceDB, fullViewName, mapFun, reduceFun, cb) {
sourceDB.info(function (err, info) {
if (err) {
return cb(err);
}
var PouchDB = sourceDB.constructor;
var depDbName = info.db_name + '-mrview-' + PouchDB.utils.Crypto.MD5(
mapFun.toString() + (reduceFun && reduceFun.toString()));
// save the view name in the source PouchDB so it can be cleaned up if necessary
// (e.g. when the _design doc is deleted, remove all associated view data)
function diffFunction(doc) {
doc.views = doc.views || {};
doc.views[fullViewName] = doc.views[fullViewName] || {};
doc.views[fullViewName][depDbName] = true;
doc._deleted = false;
return doc;
}
upsert(sourceDB, '_local/mrviews', diffFunction, function (err) {
if (err) {
return cb(err);
}
sourceDB.registerDependentDatabase(depDbName, function (err, res) {
if (err) {
return cb(err);
}
var db = res.db;
var view = new View(depDbName, db, sourceDB, mapFun, reduceFun);
view.db.get('_local/lastSeq', function (err, lastSeqDoc) {
if (err) {
if (err.name !== 'not_found') {
return cb(err);
} else {
view.seq = 0;
}
} else {
view.seq = lastSeqDoc.seq;
}
cb(null, view);
});
});
});
});
};
function View(name, db, sourceDB, mapFun, reduceFun) {
this.db = db;
this.name = name;
this.sourceDB = sourceDB;
this.adapter = sourceDB.adapter;
this.mapFun = mapFun;
this.reduceFun = reduceFun;
}
},{"./upsert":52,"./utils":53}],47:[function(_dereq_,module,exports){
'use strict';
module.exports = function (func, emit, sum, log, isArray, toJSON) {
/*jshint evil: true */
return eval("'use strict'; (" + func + ");");
};
},{}],48:[function(_dereq_,module,exports){
(function (process,global){
'use strict';
var pouchCollate = _dereq_('pouchdb-collate');
var Promise = typeof global.Promise === 'function' ? global.Promise : _dereq_('lie');
var TaskQueue = _dereq_('./taskqueue');
var collate = pouchCollate.collate;
var toIndexableString = pouchCollate.toIndexableString;
var normalizeKey = pouchCollate.normalizeKey;
var createView = _dereq_('./create-view');
var evalFunc = _dereq_('./evalfunc');
var log = ((typeof console !== 'undefined') && (typeof console.log === 'function')) ?
Function.prototype.bind.call(console.log, console) : function () {};
var utils = _dereq_('./utils');
var taskQueue = new TaskQueue();
taskQueue.registerTask('updateView', updateViewInner);
taskQueue.registerTask('queryView', queryViewInner);
taskQueue.registerTask('localViewCleanup', localViewCleanupInner);
var processKey = function (key) {
// Stringify keys since we want them as map keys (see #35)
return JSON.stringify(normalizeKey(key));
};
function tryCode(db, fun, args) {
// emit an event if there was an error thrown by a map/reduce function.
// putting try/catches in a single function also avoids deoptimizations.
try {
return {
output : fun.apply(null, args)
};
} catch (e) {
db.emit('error', e);
return {error : e};
}
}
function sliceResults(results, limit, skip) {
skip = skip || 0;
if (typeof limit === 'number') {
return results.slice(skip, limit + skip);
} else if (skip > 0) {
return results.slice(skip);
}
return results;
}
function createKeysLookup(keys) {
// creates a lookup map for the given keys, so that doing
// query() with keys doesn't become an O(n * m) operation
// lookup values are typically integer indexes, but may
// map to a list of integers, since keys can be duplicated
var lookup = {};
for (var i = 0, len = keys.length; i < len; i++) {
var key = processKey(keys[i]);
var val = lookup[key];
if (typeof val === 'undefined') {
lookup[key] = i;
} else if (typeof val === 'number') {
lookup[key] = [val, i];
} else { // array
val.push(i);
}
}
return lookup;
}
// standard sorting for emitted key/values
function sortByKeyIdValue(a, b) {
var keyCompare = collate(a.key, b.key);
if (keyCompare !== 0) {
return keyCompare;
}
var idCompare = collate(a.id, b.id);
return idCompare !== 0 ? idCompare : collate(a.value, b.value);
}
function addAtIndex(idx, result, prelimResults) {
var val = prelimResults[idx];
if (typeof val === 'undefined') {
prelimResults[idx] = result;
} else if (!Array.isArray(val)) {
// same key for multiple docs, need to preserve document order, so create array
prelimResults[idx] = [val, result];
} else { // existing array
val.push(result);
}
}
function sum(values) {
return values.reduce(function (a, b) {
return a + b;
}, 0);
}
var builtInReduce = {
"_sum": function (keys, values) {
return sum(values);
},
"_count": function (keys, values) {
return values.length;
},
"_stats": function (keys, values) {
// no need to implement rereduce=true, because Pouch
// will never call it
function sumsqr(values) {
var _sumsqr = 0;
var error;
for (var idx in values) {
if (typeof values[idx] === 'number') {
_sumsqr += values[idx] * values[idx];
} else {
error = new Error('builtin _stats function requires map values to be numbers');
error.name = 'invalid_value';
error.status = 500;
return error;
}
}
return _sumsqr;
}
return {
sum : sum(values),
min : Math.min.apply(null, values),
max : Math.max.apply(null, values),
count : values.length,
sumsqr : sumsqr(values)
};
}
};
function addHttpParam(paramName, opts, params, asJson) {
// add an http param from opts to params, optionally json-encoded
var val = opts[paramName];
if (typeof val !== 'undefined') {
if (asJson) {
val = encodeURIComponent(JSON.stringify(val));
}
params.push(paramName + '=' + val);
}
}
function mapUsingKeys(inputResults, keys, keysLookup) {
// create a new results array from the given array,
// ensuring that the following conditions are respected:
// 1. docs are ordered by key, then doc id
// 2. docs can appear >1 time in the list, if their key is specified >1 time
// 3. keys can be unknown, in which case there's just a hole in the returned array
var prelimResults = new Array(keys.length);
inputResults.forEach(function (result) {
var idx = keysLookup[processKey(result.key)];
if (typeof idx === 'number') {
addAtIndex(idx, result, prelimResults);
} else { // array of indices
idx.forEach(function (subIdx) {
addAtIndex(subIdx, result, prelimResults);
});
}
});
// flatten the array, remove nulls, sort by doc ids
var outputResults = [];
prelimResults.forEach(function (result) {
if (Array.isArray(result)) {
outputResults = outputResults.concat(result.sort(sortByKeyIdValue));
} else { // single result
outputResults.push(result);
}
});
return outputResults;
}
function checkQueryParseError(options, fun) {
var startkeyName = options.descending ? 'endkey' : 'startkey';
var endkeyName = options.descending ? 'startkey' : 'endkey';
if (typeof options[startkeyName] !== 'undefined' &&
typeof options[endkeyName] !== 'undefined' &&
collate(options[startkeyName], options[endkeyName]) > 0) {
return new QueryParseError('No rows can match your key range, reverse your ' +
'start_key and end_key or set {descending : true}');
} else if (fun.reduce && options.reduce !== false && options.include_docs) {
return new QueryParseError('{include_docs:true} is invalid for reduce');
}
}
function viewQuery(db, fun, options) {
var origMap;
if (!options.skip) {
options.skip = 0;
}
if (!fun.reduce) {
options.reduce = false;
}
var startkeyName = options.descending ? 'endkey' : 'startkey';
var endkeyName = options.descending ? 'startkey' : 'endkey';
var results = [];
var current;
var num_started = 0;
var completed = false;
var keysLookup;
var totalRows = 0;
function emit(key, val) {
totalRows++;
var viewRow = {
id: current.doc._id,
key: pouchCollate.normalizeKey(key),
value: pouchCollate.normalizeKey(val)
};
if (typeof options[startkeyName] !== 'undefined' && collate(key, options[startkeyName]) < 0) {
return;
}
if (typeof options[endkeyName] !== 'undefined' && collate(key, options[endkeyName]) > 0) {
return;
}
if (typeof options.key !== 'undefined' && collate(key, options.key) !== 0) {
return;
}
if (typeof options.keys !== 'undefined') {
keysLookup = keysLookup || createKeysLookup(options.keys);
if (typeof keysLookup[processKey(key)] === 'undefined') {
return;
}
}
num_started++;
if (options.include_docs) {
//in this special case, join on _id (issue #106)
if (val && typeof val === 'object' && val._id) {
db.get(val._id,
function (_, joined_doc) {
if (joined_doc) {
viewRow.doc = joined_doc;
}
results.push(viewRow);
checkComplete();
});
return;
} else {
viewRow.doc = current.doc;
}
}
results.push(viewRow);
}
if (typeof fun.map === "function" && fun.map.length === 2) {
//save a reference to it
origMap = fun.map;
fun.map = function (doc) {
//call it with the emit as the second argument
return origMap(doc, emit);
};
} else {
// ugly way to make sure references to 'emit' in map/reduce bind to the
// above emit
fun.map = evalFunc(fun.map.toString(), emit, sum, log, Array.isArray, JSON.parse);
}
if (fun.reduce) {
if (builtInReduce[fun.reduce]) {
fun.reduce = builtInReduce[fun.reduce];
} else {
fun.reduce = evalFunc(fun.reduce.toString(), emit, sum, log, Array.isArray, JSON.parse);
}
}
function returnMapResults() {
if (options.descending) {
results.reverse();
}
return options.complete(null, {
total_rows: totalRows,
offset: options.skip,
rows: sliceResults(results, options.limit, options.skip)
});
}
var mapError;
//only proceed once all documents are mapped and joined
function checkComplete() {
var error;
if (completed && (mapError || results.length === num_started)) {
if (typeof options.keys !== 'undefined' && results.length) {
// user supplied a keys param, sort by keys
results = mapUsingKeys(results, options.keys, keysLookup);
} else { // normal sorting
results.sort(sortByKeyIdValue);
}
if (options.reduce === false) {
return returnMapResults();
}
// TODO: actually implement group/group_level
var shouldGroup = options.group || options.group_level;
var groups = [];
results.forEach(function (e) {
var last = groups[groups.length - 1];
var key = shouldGroup ? e.key : null;
if (last && collate(last.key[0][0], key) === 0) {
last.key.push([key, e.id]);
last.value.push(e.value);
return;
}
groups.push({key: [
[key, e.id]
], value: [e.value]});
});
var reduceError;
groups.forEach(function (e) {
if (reduceError) {
return;
}
var reduceTry = tryCode(db, fun.reduce, [e.key, e.value, false]);
if (reduceTry.error) {
reduceError = true;
} else {
e.value = reduceTry.output;
}
if (e.value.sumsqr && e.value.sumsqr instanceof Error) {
error = e.value;
return;
}
e.key = e.key[0][0];
});
if (reduceError) {
returnMapResults();
return;
}
if (error) {
options.complete(error);
return;
}
if (options.descending) {
groups.reverse();
}
// no total_rows/offset when reducing
options.complete(null, {
rows : sliceResults(groups, options.limit, options.skip)
});
}
}
db.changes({
conflicts: true,
include_docs: true,
onChange: function (doc) {
if (!('deleted' in doc) && doc.id[0] !== "_" && !mapError) {
current = {doc: doc.doc};
var mapTry = tryCode(db, fun.map, [doc.doc]);
if (mapTry.error) {
mapError = true;
}
}
},
complete: function () {
completed = true;
checkComplete();
}
});
}
function httpQuery(db, fun, opts) {
var callback = opts.complete;
// List of parameters to add to the PUT request
var params = [];
var body;
var method = 'GET';
// If opts.reduce exists and is defined, then add it to the list
// of parameters.
// If reduce=false then the results are that of only the map function
// not the final result of map and reduce.
addHttpParam('reduce', opts, params);
addHttpParam('include_docs', opts, params);
addHttpParam('limit', opts, params);
addHttpParam('descending', opts, params);
addHttpParam('group', opts, params);
addHttpParam('group_level', opts, params);
addHttpParam('skip', opts, params);
addHttpParam('startkey', opts, params, true);
addHttpParam('endkey', opts, params, true);
addHttpParam('key', opts, params, true);
// If keys are supplied, issue a POST request to circumvent GET query string limits
// see http://wiki.apache.org/couchdb/HTTP_view_API#Querying_Options
if (typeof opts.keys !== 'undefined') {
method = 'POST';
if (typeof fun === 'string') {
body = JSON.stringify({keys: opts.keys});
} else { // fun is {map : mapfun}, so append to this
fun.keys = opts.keys;
}
}
// Format the list of parameters into a valid URI query string
params = params.join('&');
params = params === '' ? '' : '?' + params;
// We are referencing a query defined in the design doc
if (typeof fun === 'string') {
var parts = fun.split('/');
db.request({
method: method,
url: '_design/' + parts[0] + '/_view/' + parts[1] + params,
body: body
}, callback);
return;
}
// We are using a temporary view, terrible for performance but good for testing
var queryObject = JSON.parse(JSON.stringify(fun, function (key, val) {
if (typeof val === 'function') {
return val + ''; // implicitly `toString` it
}
return val;
}));
db.request({
method: 'POST',
url: '_temp_view' + params,
body: queryObject
}, callback);
}
function destroyView(viewName, adapter, PouchDB, cb) {
PouchDB.destroy(viewName, {adapter : adapter}, function (err) {
if (err) {
return cb(err);
}
return cb(null);
});
}
function saveKeyValues(view, indexableKeysToKeyValues, docId, seq, cb) {
view.db.get('_local/lastSeq', function (err, lastSeqDoc) {
if (err) {
if (err.name !== 'not_found') {
return cb(err);
} else {
lastSeqDoc = {
_id : '_local/lastSeq',
seq : 0
};
}
}
view.db.get('_local/doc_' + docId, function (err, metaDoc) {
if (err) {
if (err.name !== 'not_found') {
return cb(err);
} else {
metaDoc = {
_id : '_local/doc_' + docId,
keys : []
};
}
}
view.db.allDocs({keys : metaDoc.keys, include_docs : true}, function (err, res) {
if (err) {
return cb(err);
}
var kvDocs = res.rows.map(function (row) {
return row.doc;
}).filter(function (row) {
return row;
});
var oldKeysMap = {};
kvDocs.forEach(function (kvDoc) {
oldKeysMap[kvDoc._id] = true;
kvDoc._deleted = !indexableKeysToKeyValues[kvDoc._id];
if (!kvDoc._deleted) {
kvDoc.value = indexableKeysToKeyValues[kvDoc._id];
}
});
var newKeys = Object.keys(indexableKeysToKeyValues);
newKeys.forEach(function (key) {
if (!oldKeysMap[key]) {
// new doc
kvDocs.push({
_id : key,
value : indexableKeysToKeyValues[key]
});
}
});
metaDoc.keys = utils.uniq(newKeys.concat(metaDoc.keys));
kvDocs.push(metaDoc);
lastSeqDoc.seq = seq;
kvDocs.push(lastSeqDoc);
view.db.bulkDocs({docs : kvDocs}, function (err) {
if (err) {
return cb(err);
}
cb(null);
});
});
});
});
}
function updateView(view, cb) {
taskQueue.addTask(view.sourceDB, 'updateView', [view, cb]);
taskQueue.execute();
}
function updateViewInner(view, cb) {
// bind the emit function once
var indexableKeysToKeyValues;
var emitCounter;
var doc;
function emit(key, value) {
var indexableStringKey = toIndexableString([key, doc._id, value, emitCounter++]);
indexableKeysToKeyValues[indexableStringKey] = {
id : doc._id,
key : normalizeKey(key),
value : normalizeKey(value)
};
}
var mapFun = evalFunc(view.mapFun.toString(), emit, sum, log, Array.isArray, JSON.parse);
var reduceFun;
if (view.reduceFun) {
reduceFun = builtInReduce[view.reduceFun] ||
evalFunc(view.reduceFun.toString(), emit, sum, log, Array.isArray, JSON.parse);
}
var lastSeq = view.seq;
var gotError;
var complete;
var numStarted = 0;
var numFinished = 0;
function checkComplete() {
if (!gotError && complete && numStarted === numFinished) {
view.seq = lastSeq;
cb(null);
}
}
function processChange(changeInfo, cb) {
if (changeInfo.id[0] === '_') {
numFinished++;
return cb(null);
}
indexableKeysToKeyValues = {};
emitCounter = 0;
doc = changeInfo.doc;
if (!('deleted' in changeInfo)) {
tryCode(view.sourceDB, mapFun, [changeInfo.doc]);
}
saveKeyValues(view, indexableKeysToKeyValues, changeInfo.id, changeInfo.seq, function (err) {
if (err) {
return cb(err);
} else {
lastSeq = Math.max(lastSeq, changeInfo.seq);
numFinished++;
cb(null);
}
});
}
var queue = new TaskQueue();
queue.registerTask('processChange', processChange);
view.sourceDB.changes({
conflicts: true,
include_docs: true,
since : view.seq,
onChange: function (doc) {
numStarted++;
queue.addTask(view.sourceDB, 'processChange', [doc, function (err) {
if (err && !gotError) {
gotError = err;
return cb(err);
}
checkComplete();
}]);
queue.execute();
},
complete: function () {
complete = true;
checkComplete();
}
});
}
function reduceView(view, results, options, cb) {
// we already have the reduced output persisted in the database,
// so we only need to rereduce
// TODO: actually implement group/group_level
var shouldGroup = options.group || options.group_level;
var reduceFun;
if (builtInReduce[view.reduceFun]) {
reduceFun = builtInReduce[view.reduceFun];
} else {
reduceFun = evalFunc(
view.reduceFun.toString(), null, sum, log, Array.isArray, JSON.parse);
}
var error;
var groups = [];
results.forEach(function (e) {
var last = groups[groups.length - 1];
var key = shouldGroup ? e.key : null;
if (last && collate(last.key[0][0], key) === 0) {
last.key.push([key, e.id]);
last.value.push(e.value);
return;
}
groups.push({key: [
[key, e.id]
], value: [e.value]});
});
for (var i = 0, len = groups.length; i < len; i++) {
var e = groups[i];
var reduceTry = tryCode(view.sourceDB, reduceFun, [e.key, e.value, false]);
if (reduceTry.error) {
return reduceTry;
} else {
e.value = reduceTry.output;
}
if (e.value.sumsqr && e.value.sumsqr instanceof Error) {
error = e.value;
}
e.key = e.key[0][0];
}
if (error) {
return cb(error);
}
// no total_rows/offset when reducing
cb(null, {
rows: sliceResults(groups, options.limit, options.skip)
});
}
function queryView(view, opts, cb) {
taskQueue.addTask(view.sourceDB, 'queryView', [view, opts, cb]);
taskQueue.execute();
}
function queryViewInner(view, opts, cb) {
var totalRows;
var shouldReduce = view.reduceFun && opts.reduce !== false;
var skip = opts.skip || 0;
if (typeof opts.keys !== 'undefined' && !opts.keys.length) {
// equivalent query
opts.limit = 0;
delete opts.keys;
}
function fetchFromView(viewOpts, cb) {
viewOpts.include_docs = true;
view.db.allDocs(viewOpts, function (err, res) {
if (err) {
return cb(err);
}
totalRows = res.total_rows;
var resultValues = res.rows.map(function (result) {
return result.doc.value;
});
cb(null, resultValues);
});
}
function onMapResultsReady(results) {
if (shouldReduce) {
var reduceResult = reduceView(view, results, opts, cb);
if (!(reduceResult && reduceResult.error)) {
return;
} // in case of reduce error, map results are returned
}
results.forEach(function (result) {
delete result.reduceOutput;
});
var onComplete = function () {
cb(null, {
total_rows : totalRows,
offset : skip,
rows : results
});
};
if (opts.include_docs && results.length) {
// fetch and attach documents
var numDocsFetched = 0;
results.forEach(function (viewRow) {
var val = viewRow.value;
//in this special case, join on _id (issue #106)
var dbId = (val && typeof val === 'object' && val._id) || viewRow.id;
view.sourceDB.get(dbId, function (_, joined_doc) {
if (joined_doc) {
viewRow.doc = joined_doc;
}
if (++numDocsFetched === results.length) {
onComplete();
}
});
});
} else { // don't need the docs
onComplete();
}
}
if (typeof opts.keys !== 'undefined') {
var keysLookup = createKeysLookup(opts.keys);
var keysLookupLen = Object.keys(keysLookup).length;
var results = new Array(opts.keys.length);
var numKeysFetched = 0;
var keysError;
Object.keys(keysLookup).forEach(function (key) {
var keysLookupIndices = keysLookup[key];
var trueKey = JSON.parse(key);
var viewOpts = {
startkey : toIndexableString([trueKey]),
endkey : toIndexableString([trueKey, {}])
};
fetchFromView(viewOpts, function (err, subResults) {
if (err) {
keysError = true;
return cb(err);
} else if (keysError) {
return;
} else if (typeof keysLookupIndices === 'number') {
results[keysLookupIndices] = subResults;
} else { // array of indices
keysLookupIndices.forEach(function (i) {
results[i] = subResults;
});
}
if (++numKeysFetched === keysLookupLen) {
// combine results
var combinedResults = [];
results.forEach(function (result) {
combinedResults = combinedResults.concat(result);
});
if (!shouldReduce) {
// since we couldn't skip/limit before, do so now
combinedResults = sliceResults(combinedResults, opts.limit, skip);
}
onMapResultsReady(combinedResults);
}
});
});
} else { // normal query, no 'keys'
var viewOpts = {
descending : opts.descending
};
if (typeof opts.startkey !== 'undefined') {
viewOpts.startkey = opts.descending ?
toIndexableString([opts.startkey, {}]) :
toIndexableString([opts.startkey]);
}
if (typeof opts.endkey !== 'undefined') {
viewOpts.endkey = opts.descending ?
toIndexableString([opts.endkey]) :
toIndexableString([opts.endkey, {}]);
}
if (typeof opts.key !== 'undefined') {
var keyStart = toIndexableString([opts.key]);
var keyEnd = toIndexableString([opts.key, {}]);
if (viewOpts.descending) {
viewOpts.endkey = keyStart;
viewOpts.startkey = keyEnd;
} else {
viewOpts.startkey = keyStart;
viewOpts.endkey = keyEnd;
}
}
if (!shouldReduce) {
if (typeof opts.limit === 'number') {
viewOpts.limit = opts.limit;
}
viewOpts.skip = skip;
}
fetchFromView(viewOpts, function (err, results) {
if (err) {
return cb(err);
}
onMapResultsReady(results);
});
}
}
function httpViewCleanup(db, cb) {
db.request({
method: 'POST',
url: '_view_cleanup'
}, cb);
}
function localViewCleanup(db, callback) {
taskQueue.addTask(db, 'localViewCleanup', [db, callback]);
taskQueue.execute();
}
function localViewCleanupInner(db, callback) {
db.get('_local/mrviews', function (err, metaDoc) {
if (err && err.name !== 'not_found') {
return callback(err);
} else if (metaDoc && metaDoc.views) {
var docsToViews = {};
Object.keys(metaDoc.views).forEach(function (fullViewName) {
var parts = fullViewName.split('/');
var designDocName = '_design/' + parts[0];
var viewName = parts[1];
docsToViews[designDocName] = docsToViews[designDocName] || {};
docsToViews[designDocName][viewName] = true;
});
var opts = {
keys : Object.keys(docsToViews),
include_docs : true
};
db.allDocs(opts, function (err, res) {
if (err) {
return callback(err);
}
var numStarted = 0;
var numDone = 0;
var gotError;
function checkDone() {
if (numStarted === numDone) {
if (gotError) {
return callback(gotError);
}
callback(null, {ok : true});
}
}
var viewsToStatus = {};
res.rows.forEach(function (row) {
Object.keys(docsToViews[row.key]).forEach(function (viewName) {
var viewDBNames = Object.keys(metaDoc.views[row.key.substring(8) + '/' + viewName]);
// design doc deleted, or view function nonexistent
var statusIsGood = row.doc && row.doc.views && row.doc.views[viewName];
viewDBNames.forEach(function (viewDBName) {
viewsToStatus[viewDBName] = viewsToStatus[viewDBName] || statusIsGood;
});
});
});
var dbsToDelete = Object.keys(viewsToStatus).filter(function (viewDBName) {
return !viewsToStatus[viewDBName];
});
if (!dbsToDelete.length) {
return callback(null, {ok : true});
}
utils.uniq(dbsToDelete).forEach(function (viewDBName) {
numStarted++;
destroyView(viewDBName, db.adapter, db.constructor, function (err) {
if (err) {
gotError = err;
}
numDone++;
checkDone();
});
});
taskQueue.execute();
});
} else {
return callback(null, {ok : true});
}
});
}
exports.viewCleanup = function (origCallback) {
var db = this;
var realCB;
if (origCallback) {
realCB = function (err, resp) {
process.nextTick(function () {
origCallback(err, resp);
});
};
}
var promise = new Promise(function (resolve, reject) {
function callback(err, data) {
if (err) {
reject(err);
} else {
resolve(data);
}
}
if (db.type() === 'http') {
return httpViewCleanup(db, callback);
}
return localViewCleanup(db, callback);
});
if (realCB) {
promise.then(function (resp) {
realCB(null, resp);
}, realCB);
}
return promise;
};
exports.query = function (fun, opts, callback) {
var db = this;
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = utils.clone(opts || {});
if (callback) {
opts.complete = callback;
}
var tempCB = opts.complete;
var realCB;
if (opts.complete) {
realCB = function (err, resp) {
process.nextTick(function () {
tempCB(err, resp);
});
};
}
var promise = new Promise(function (resolve, reject) {
opts.complete = function (err, data) {
if (err) {
reject(err);
} else {
resolve(data);
}
};
if (typeof fun === 'object') {
// copy to avoid overwriting
var funCopy = {};
Object.keys(fun).forEach(function (key) {
funCopy[key] = fun[key];
});
fun = funCopy;
}
if (db.type() === 'http') {
if (typeof fun === 'function') {
return httpQuery(db, {map: fun}, opts);
}
return httpQuery(db, fun, opts);
}
if (typeof fun === 'function') {
fun = {map : fun};
}
var parseError = checkQueryParseError(opts, fun);
if (parseError) {
return opts.complete(parseError);
}
if (typeof fun !== 'string') {
return viewQuery(db, fun, opts);
}
var fullViewName = fun;
var parts = fullViewName.split('/');
var designDocName = parts[0];
var viewName = parts[1];
db.get('_design/' + designDocName, function (err, doc) {
if (err) {
opts.complete(err);
return;
}
var fun = doc.views && doc.views[viewName];
if (!fun || typeof fun.map !== 'string') {
opts.complete({ name: 'not_found', message: 'missing_named_view' });
return;
}
var parseError = checkQueryParseError(opts, fun);
if (parseError) {
return opts.complete(parseError);
}
createView(db, fullViewName, fun.map, fun.reduce, function (err, view) {
if (err) {
return opts.complete(err);
} else if (opts.stale === 'ok' || opts.stale === 'update_after') {
if (opts.stale === 'update_after') {
updateView(view, function (err) {
if (err) {
view.sourceDB.emit('error', err);
}
});
}
queryView(view, opts, opts.complete);
} else { // stale not ok
return updateView(view, function (err) {
if (err) {
return opts.complete(err);
}
queryView(view, opts, opts.complete);
});
}
});
});
});
if (realCB) {
promise.then(function (resp) {
realCB(null, resp);
}, realCB);
}
return promise;
};
function QueryParseError(message) {
this.status = 400;
this.name = 'query_parse_error';
this.message = message;
this.error = true;
try {
Error.captureStackTrace(this, QueryParseError);
} catch (e) {}
}
utils.inherits(QueryParseError, Error);
}).call(this,_dereq_("/Users/cmetcalf/pouchdb/node_modules/browserify/node_modules/insert-module-globals/node_modules/process/browser.js"),typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./create-view":46,"./evalfunc":47,"./taskqueue":51,"./utils":53,"/Users/cmetcalf/pouchdb/node_modules/browserify/node_modules/insert-module-globals/node_modules/process/browser.js":25,"lie":31,"pouchdb-collate":49}],49:[function(_dereq_,module,exports){
'use strict';
var MIN_MAGNITUDE = -324; // verified by -Number.MIN_VALUE
var MAGNITUDE_DIGITS = 3; // ditto
var SEP = ''; // set to '_' for easier debugging
var utils = _dereq_('./utils');
exports.collate = function (a, b) {
a = exports.normalizeKey(a);
b = exports.normalizeKey(b);
var ai = collationIndex(a);
var bi = collationIndex(b);
if ((ai - bi) !== 0) {
return ai - bi;
}
if (a === null) {
return 0;
}
switch (typeof a) {
case 'number':
return a - b;
case 'boolean':
return a === b ? 0 : (a < b ? -1 : 1);
case 'string':
return stringCollate(a, b);
}
return Array.isArray(a) ? arrayCollate(a, b) : objectCollate(a, b);
};
// couch considers null/NaN/Infinity/-Infinity === undefined,
// for the purposes of mapreduce indexes. also, dates get stringified.
exports.normalizeKey = function (key) {
switch (typeof key) {
case 'undefined':
return null;
case 'number':
if (key === Infinity || key === -Infinity || isNaN(key)) {
return null;
}
return key;
}
return key instanceof Date ? key.toJSON() : key;
};
function indexify(key) {
if (key !== null) {
switch (typeof key) {
case 'boolean':
return key ? 1 : 0;
case 'number':
return numToIndexableString(key);
case 'string':
// We've to be sure that key does not contain \u0000
// Do order-preserving replacements:
// 0 -> 1, 1
// 1 -> 1, 2
// 2 -> 2, 2
return key
.replace(/\u0002/g, '\u0002\u0002')
.replace(/\u0001/g, '\u0001\u0002')
.replace(/\u0000/g, '\u0001\u0001');
case 'object':
var isArray = Array.isArray(key);
var arr = isArray ? key : Object.keys(key);
var i = -1;
var len = arr.length;
var result = '';
if (isArray) {
while (++i < len) {
result += exports.toIndexableString(arr[i]);
}
} else {
while (++i < len) {
var objKey = arr[i];
result += exports.toIndexableString(objKey) +
exports.toIndexableString(key[objKey]);
}
}
return result;
}
}
return '';
}
// convert the given key to a string that would be appropriate
// for lexical sorting, e.g. within a database, where the
// sorting is the same given by the collate() function.
exports.toIndexableString = function (key) {
var zero = '\u0000';
key = exports.normalizeKey(key);
return collationIndex(key) + SEP + indexify(key) + zero;
};
function arrayCollate(a, b) {
var len = Math.min(a.length, b.length);
for (var i = 0; i < len; i++) {
var sort = exports.collate(a[i], b[i]);
if (sort !== 0) {
return sort;
}
}
return (a.length === b.length) ? 0 :
(a.length > b.length) ? 1 : -1;
}
function stringCollate(a, b) {
// See: https://github.com/daleharvey/pouchdb/issues/40
// This is incompatible with the CouchDB implementation, but its the
// best we can do for now
return (a === b) ? 0 : ((a > b) ? 1 : -1);
}
function objectCollate(a, b) {
var ak = Object.keys(a), bk = Object.keys(b);
var len = Math.min(ak.length, bk.length);
for (var i = 0; i < len; i++) {
// First sort the keys
var sort = exports.collate(ak[i], bk[i]);
if (sort !== 0) {
return sort;
}
// if the keys are equal sort the values
sort = exports.collate(a[ak[i]], b[bk[i]]);
if (sort !== 0) {
return sort;
}
}
return (ak.length === bk.length) ? 0 :
(ak.length > bk.length) ? 1 : -1;
}
// The collation is defined by erlangs ordered terms
// the atoms null, true, false come first, then numbers, strings,
// arrays, then objects
// null/undefined/NaN/Infinity/-Infinity are all considered null
function collationIndex(x) {
var id = ['boolean', 'number', 'string', 'object'];
var idx = id.indexOf(typeof x);
//false if -1 otherwise true, but fast!!!!1
if (~idx) {
if (x === null) {
return 1;
}
if (Array.isArray(x)) {
return 5;
}
return idx < 3 ? (idx + 2) : (idx + 3);
}
if (Array.isArray(x)) {
return 5;
}
}
// conversion:
// x yyy zz...zz
// x = 0 for negative, 1 for 0, 2 for positive
// y = exponent (for negative numbers negated) moved so that it's >= 0
// z = mantisse
function numToIndexableString(num) {
// convert number to exponential format for easier and
// more succinct string sorting
var expFormat = num.toExponential().split(/e\+?/);
var magnitude = parseInt(expFormat[1], 10);
var neg = num < 0;
if (num === 0) {
return '1';
}
var result = neg ? '0' : '2';
// first sort by magnitude
// it's easier if all magnitudes are positive
var magForComparison = ((neg ? -magnitude : magnitude) - MIN_MAGNITUDE);
var magString = utils.padLeft((magForComparison).toString(), '0', MAGNITUDE_DIGITS);
result += SEP + magString;
// then sort by the factor
var factor = Math.abs(parseFloat(expFormat[0])); // [1..10)
if (neg) { // for negative reverse ordering
factor = 10 - factor;
}
var factorStr = factor.toFixed(20);
// strip zeros from the end
factorStr = factorStr.replace(/\.?0+$/, '');
result += SEP + factorStr;
return result;
}
},{"./utils":50}],50:[function(_dereq_,module,exports){
'use strict';
function pad(str, padWith, upToLength) {
var padding = '';
var targetLength = upToLength - str.length;
while (padding.length < targetLength) {
padding += padWith;
}
return padding;
}
exports.padLeft = function (str, padWith, upToLength) {
var padding = pad(str, padWith, upToLength);
return padding + str;
};
exports.padRight = function (str, padWith, upToLength) {
var padding = pad(str, padWith, upToLength);
return str + padding;
};
exports.stringLexCompare = function (a, b) {
var aLen = a.length;
var bLen = b.length;
var i;
for (i = 0; i < aLen; i++) {
if (i === bLen) {
// b is shorter substring of a
return 1;
}
var aChar = a.charAt(i);
var bChar = b.charAt(i);
if (aChar !== bChar) {
return aChar < bChar ? -1 : 1;
}
}
if (aLen < bLen) {
// a is shorter substring of b
return -1;
}
return 0;
};
/*
* returns the decimal form for the given integer, i.e. writes
* out all the digits (in base-10) instead of using scientific notation
*/
exports.intToDecimalForm = function (int) {
var isNeg = int < 0;
var result = '';
do {
var remainder = isNeg ? -Math.ceil(int % 10) : Math.floor(int % 10);
result = remainder + result;
int = isNeg ? Math.ceil(int / 10) : Math.floor(int / 10);
} while (int);
if (isNeg && result !== '0') {
result = '-' + result;
}
return result;
};
},{}],51:[function(_dereq_,module,exports){
'use strict';
/*
* Simple task queue to sequentialize actions. Assumes callbacks will eventually fire (once).
*/
module.exports = TaskQueue;
function TaskQueue() {
this.isReady = true;
this.queue = [];
this.registeredTasks = {};
}
TaskQueue.prototype.registerTask = function (name, func) {
this.registeredTasks[name] = func;
};
TaskQueue.prototype.execute = function () {
var self = this;
if (self.isReady && self.queue.length) {
var task = self.queue.shift();
var oldCB = task.parameters[task.parameters.length - 1];
task.parameters[task.parameters.length - 1] = function (err, res) {
oldCB.call(this, err, res);
self.isReady = true;
self.execute();
};
self.isReady = false;
self.callTask(task);
}
};
TaskQueue.prototype.callTask = function (task) {
var self = this;
try {
self.registeredTasks[task.name].apply(null, task.parameters);
} catch (err) {
// unexpected error, bubble up if they're not handling the emitted 'error' event
self.isReady = true;
task.emitter.emit('error', err);
}
};
TaskQueue.prototype.addTask = function (emitter, name, parameters) {
var task = { name: name, parameters: parameters, emitter : emitter };
this.queue.push(task);
return task;
};
},{}],52:[function(_dereq_,module,exports){
(function (global){
'use strict';
var Promise = typeof global.Promise === 'function' ? global.Promise : _dereq_('lie');
// this is essentially the "update sugar" function from daleharvey/pouchdb#1388
function upsert(db, docId, diffFun) {
return new Promise(function (fullfil, reject) {
if (docId && typeof docId === 'object') {
docId = docId._id;
}
if (typeof docId !== 'string') {
return reject(new Error('doc id is required'));
}
db.get(docId, function (err, doc) {
if (err) {
if (err.name !== 'not_found') {
return reject(err);
}
return fullfil(tryAndPut(db, diffFun({_id : docId}), diffFun));
}
doc = diffFun(doc);
fullfil(tryAndPut(db, doc, diffFun));
});
});
}
function tryAndPut(db, doc, diffFun) {
return db.put(doc).then(null, function (err) {
if (err.name !== 'conflict') {
throw err;
}
return upsert(db, doc, diffFun);
});
}
module.exports = function (db, docId, diffFun, cb) {
if (typeof cb === 'function') {
upsert(db, docId, diffFun).then(function (resp) {
cb(null, resp);
}, cb);
} else {
return upsert(db, docId, diffFun);
}
};
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"lie":31}],53:[function(_dereq_,module,exports){
'use strict';
// uniquify a list, similar to underscore's _.uniq
exports.uniq = function (arr) {
var map = {};
arr.forEach(function (element) {
map[element] = true;
});
return Object.keys(map);
};
// shallow clone an object
exports.clone = function (obj) {
if (typeof obj !== 'object') {
return obj;
}
var result = {};
Object.keys(obj).forEach(function (key) {
result[key] = obj[key];
});
return result;
};
exports.inherits = _dereq_('inherits');
},{"inherits":27}]},{},[15])
(15)
});
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