119 lines
4.5 KiB
Python
119 lines
4.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright © 2012-2014 Roberto Alsina and others.
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# Permission is hereby granted, free of charge, to any
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# person obtaining a copy of this software and associated
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# documentation files (the "Software"), to deal in the
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# Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the
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# Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice
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# shall be included in all copies or substantial portions of
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# the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
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# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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from __future__ import unicode_literals
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import codecs
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import os
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import sys
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import subprocess
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from nikola.plugin_categories import Task
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from nikola import utils
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class BuildLess(Task):
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"""Generate CSS out of LESS sources."""
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name = "build_less"
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sources_folder = "less"
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sources_ext = ".less"
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def gen_tasks(self):
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"""Generate CSS out of LESS sources."""
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self.compiler_name = self.site.config['LESS_COMPILER']
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self.compiler_options = self.site.config['LESS_OPTIONS']
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kw = {
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'cache_folder': self.site.config['CACHE_FOLDER'],
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'themes': self.site.THEMES,
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}
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tasks = {}
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# Find where in the theme chain we define the LESS targets
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# There can be many *.less in the folder, but we only will build
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# the ones listed in less/targets
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if os.path.isfile(os.path.join(self.sources_folder, "targets")):
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targets_path = os.path.join(self.sources_folder, "targets")
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else:
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targets_path = utils.get_asset_path(os.path.join(self.sources_folder, "targets"), self.site.THEMES)
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try:
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with codecs.open(targets_path, "rb", "utf-8") as inf:
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targets = [x.strip() for x in inf.readlines()]
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except Exception:
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targets = []
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for task in utils.copy_tree(self.sources_folder, os.path.join(kw['cache_folder'], self.sources_folder)):
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if task['name'] in tasks:
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continue
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task['basename'] = 'prepare_less_sources'
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tasks[task['name']] = task
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yield task
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for theme_name in kw['themes']:
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src = os.path.join(utils.get_theme_path(theme_name), self.sources_folder)
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for task in utils.copy_tree(src, os.path.join(kw['cache_folder'], self.sources_folder)):
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if task['name'] in tasks:
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continue
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task['basename'] = 'prepare_less_sources'
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tasks[task['name']] = task
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yield task
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# Build targets and write CSS files
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dst_dir = os.path.join(self.site.config['OUTPUT_FOLDER'], 'assets', 'css')
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# Make everything depend on all sources, rough but enough
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deps = []
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for task in tasks.keys():
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if task.endswith(self.sources_ext):
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deps.append(task)
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def compile_target(target, dst):
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utils.makedirs(dst_dir)
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src = os.path.join(kw['cache_folder'], self.sources_folder, target)
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run_in_shell = sys.platform == 'win32'
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try:
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compiled = subprocess.check_output([self.compiler_name] + self.compiler_options + [src], shell=run_in_shell)
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except OSError:
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utils.req_missing([self.compiler_name],
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'build LESS files (and use this theme)',
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False, False)
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with open(dst, "wb+") as outf:
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outf.write(compiled)
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yield self.group_task()
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for target in targets:
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dst = os.path.join(dst_dir, target.replace(self.sources_ext, ".css"))
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yield {
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'basename': self.name,
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'name': dst,
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'targets': [dst],
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'file_dep': deps,
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'task_dep': ['prepare_less_sources'],
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'actions': ((compile_target, [target, dst]), ),
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'uptodate': [utils.config_changed(kw)],
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'clean': True
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}
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