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67 lines
1.7 KiB
Python
67 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
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"""
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A small Flask extension that makes it easy to use Sass (SCSS) with your
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Flask application.
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Code unabashedly adapted from https://github.com/weapp/flask-coffee2js
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:copyright: (c) 2012 by Ivan Miric.
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:license: MIT, see LICENSE for more details.
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"""
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import os
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import os.path
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import codecs
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import sass
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from flask import send_from_directory
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def _convert(dir_path, src, dst):
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original_wd = os.getcwd()
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os.chdir(dir_path)
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source = codecs.open(src, 'r', encoding='utf-8').read()
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output = sass.compile(string=source)
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os.chdir(original_wd)
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outfile = codecs.open(dst, 'w', encoding='utf-8')
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outfile.write(output)
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outfile.close()
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def _get_dir_path(app, original_path, create=False):
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path = original_path
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if not os.path.isdir(path):
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path = os.path.join(app.root_path, path)
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if not os.path.isdir(path):
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if create:
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os.mkdir(path)
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else:
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raise IOError("Unable to find " + original_path)
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return path
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def init_app(app, input_dir='scss', dest='static', force=False, cache_dir="public/static"):
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input_dir = _get_dir_path(app, input_dir)
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cache_dir = _get_dir_path(app, cache_dir or dest, True)
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def _sass(filepath):
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scss_file = "%s/%s.scss" % (input_dir, filepath)
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cache_file = "%s/%s.css" % (cache_dir, filepath)
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# Source file exists, and needs regenerating
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if os.path.isfile(scss_file) and (force or not os.path.isfile(cache_file) or
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os.path.getmtime(scss_file) > os.path.getmtime(cache_file)):
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_convert(input_dir, scss_file, cache_file)
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app.logger.debug('Compiled %s into %s' % (scss_file, cache_file))
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res = send_from_directory(cache_dir, filepath + ".css")
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res.headers["Cache-Control"] = "max-age=604800" # 1 week
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return res
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app.add_url_rule("/%s/<path:filepath>.css" % dest, 'sass', _sass)
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