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phoikoi/boiler.py

Created July 20, 2018 05:29
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This python script uses Click and jinja2 to give you a super quick way to generate generic HTML pages, with or without jquery and/or bootstrap CSS and JS
Raw
boiler.py
#!/usr/bin/env python3
import sys
def die(message):
sys.stderr.write(f"{message}\n")
sys.exit(1)
try:
import click
except ImportError:
die("Required package Click is not installed")
try:
import jinja2
except ImportError:
die("Required package jinja2 is not installed")
try:
from pathlib import Path
except ImportError:
die("pathlib not available: probably need python 3.5 or higher")
import json
from json import JSONDecodeError
BOILER_TEMPLATE = """<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial_scale=1">
<title>{% block doctitle %}{% endblock doctitle %}</title>
{% if boiler_use_bootstrap_css %}
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" integrity="sha384-Smlep5jCw/wG7hdkwQ/Z5nLIefveQRIY9nfy6xoR1uRYBtpZgI6339F5dgvm/e9B" crossorigin="anonymous">
{% endif %}
{% block extrahead %}
{% endblock extrahead %}
</head>
<body>
{% if boiler_use_bootstrap_css %}
<div class="container">
{% endif %}
{% block content %}
{% endblock content %}
{% if boiler_use_bootstrap_css %}
</div>
{% endif %}
{% if boiler_use_jquery or boiler_use_bootstrap_js %}
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
{% endif %}
{% if boiler_use_bootstrap_js %}
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/js/bootstrap.min.js" integrity="sha384-o+RDsa0aLu++PJvFqy8fFScvbHFLtbvScb8AjopnFD+iEQ7wo/CG0xlczd+2O/em" crossorigin="anonymous"></script>
{% endif %}
{% block extrajs %}
{% endblock extrajs %}
</body>
"""
@click.command()
@click.option('--use-bootstrap', '-b',
type=click.Choice(
['none','css','js','both']
),
default='none')
@click.option('--use-jquery', '-j', is_flag=True, default=False)
@click.option('--template', '-t', type=click.File('r'))
@click.argument('data', type=click.File('r'), default="-")
@click.argument('output', type=click.File('w'), default="-")
def render_it(use_bootstrap, use_jquery, template, data, output):
templates = {'base.html': BOILER_TEMPLATE}
if template:
templates['child.html'] = template.read()
loader = jinja2.DictLoader(templates)
env = jinja2.Environment(
loader=loader,
trim_blocks=True,
lstrip_blocks=True,
)
raw_json = data.read()
try:
json_data = json.loads(raw_json)
except JSONDecodeError:
json_data = {}
all_data = {}
all_data['boiler_use_bootstrap_css'] = (use_bootstrap == "both") or (use_bootstrap == "css")
all_data['boiler_use_bootstrap_js'] = (use_bootstrap == "both") or (use_bootstrap == "js")
all_data['boiler_use_jquery'] = (use_jquery == True)
all_data.update(json_data)
template_name = 'child.html' if 'child.html' in templates else 'base.html'
t = env.get_template(template_name)
output.write(t.render(**all_data))
if __name__ == "__main__":
render_it()
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