a small coffescript for building coffeecup-html with error logging, file-watch and helpers

ckrender.coffee

#!/usr/bin/env coffee

fs = require 'fs'
ck = require 'coffeecup'
path = require 'path'

viewhelpers = {}

viewhelper_merge = (vhs)->
  for k, v of vhs
    viewhelpers[k] = v

vhdir = './viewhelpers/'

for hfn in ['base', 'bootstrap']
  viewhelper_merge require( vhdir+"#{hfn}.coffee")

viewhelpers._partial = (arg)->
  text '@partial '+arg

viewhelpers._body = (arg)->
  text '@body '

compilng = (cfile) ->
  ext = path.extname(cfile)
  if ext == '.coffee'
    rendering = () ->
      htmlpath = path.basename(cfile, '.coffee') + '.html'
      options = { hardcode: viewhelpers, format: true}
      contents = fs.readFileSync cfile, 'utf-8'
      try 
        renderhtml = ck.render contents, options
      catch e
        console.log path.basename(cfile) + ' has an error.'
        if e.location?
          console.log "error is " + "' " + e.message + " ' -> " + 'first line: ' + (e.location.first_line) + ' ,last line: ' + (e.location.last_line) + '. first column: ' + (e.location.first_column) + ' ,last column: ' + (e.location.last_column)
        else console.log e
      if renderhtml?
        fs.writeFileSync htmlpath, renderhtml, 'utf-8'
        console.log path.basename(cfile) + ' recompiled.'
    watching = () ->
      fs.watch cfile, (event, filename) ->
        if event is 'change'
          rendering()
        if event is 'rename'
          console.log 'error: file has been renamed.'
    watching()
  else
    console.log 'error: filetype ' + ext + ' not supported.'

main = (argv)->
  files = argv[2..]
  console.log files
  for file in files
    compilng(file)

main(process.argv) if require.main==module