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# -*- coding: utf-8 -*-
# Copyright © 2012-2015 Roberto Alsina and others.
# 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.
"""Create gzipped copies of files."""
import gzip
import os
import shlex
import subprocess
from nikola.plugin_categories import TaskMultiplier
class GzipFiles(TaskMultiplier):
"""If appropiate, create tasks to create gzipped versions of files."""
name = "gzip"
is_default = True
def process(self, task, prefix):
"""Process tasks."""
if not self.site.config['GZIP_FILES']:
return []
if task.get('name') is None:
return []
gzip_task = {
'file_dep': [],
'targets': [],
'actions': [],
'basename': '{0}_gzip'.format(prefix),
'name': task.get('name').split(":", 1)[-1] + '.gz',
'clean': True,
}
targets = task.get('targets', [])
flag = False
for target in targets:
ext = os.path.splitext(target)[1]
if (ext.lower() in self.site.config['GZIP_EXTENSIONS'] and
target.startswith(self.site.config['OUTPUT_FOLDER'])):
flag = True
gzipped = target + '.gz'
gzip_task['file_dep'].append(target)
gzip_task['targets'].append(gzipped)
gzip_task['actions'].append((create_gzipped_copy, (target, gzipped, self.site.config['GZIP_COMMAND'])))
if not flag:
return []
return [gzip_task]
def create_gzipped_copy(in_path, out_path, command=None):
"""Create gzipped copy of in_path and save it as out_path."""
if command:
subprocess.check_call(shlex.split(command.format(filename=in_path)))
else:
with gzip.GzipFile(out_path, 'wb+') as outf:
with open(in_path, 'rb') as inf:
outf.write(inf.read())
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