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# Copyright (c) 2012 Roberto Alsina y otros.
# 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.
from __future__ import unicode_literals, print_function
import os
from pygments import highlight
from pygments.lexers import get_lexer_for_filename, TextLexer
from pygments.formatters import HtmlFormatter
from nikola.plugin_categories import Task
from nikola import utils
class Listings(Task):
"""Render pretty listings."""
name = "render_listings"
def gen_tasks(self):
"""Render pretty code listings."""
kw = {
"default_lang": self.site.config["DEFAULT_LANG"],
"listings_folder": self.site.config["LISTINGS_FOLDER"],
"output_folder": self.site.config["OUTPUT_FOLDER"],
}
# Things to ignore in listings
ignored_extensions = (".pyc",)
def render_listing(in_name, out_name, folders=[], files=[]):
if in_name:
with open(in_name, 'r') as fd:
try:
lexer = get_lexer_for_filename(in_name)
except:
lexer = TextLexer()
code = highlight(fd.read(), lexer,
HtmlFormatter(cssclass='code',
linenos="table", nowrap=False,
lineanchors=utils.slugify(f),
anchorlinenos=True))
title = os.path.basename(in_name)
else:
code = ''
title = ''
crumbs = utils.get_crumbs(os.path.relpath(out_name,
kw['output_folder']),
is_file=True)
context = {
'code': code,
'title': title,
'crumbs': crumbs,
'lang': kw['default_lang'],
'folders': folders,
'files': files,
'description': title,
}
self.site.render_template('listing.tmpl', out_name,
context)
flag = True
template_deps = self.site.template_system.template_deps('listing.tmpl')
for root, dirs, files in os.walk(kw['listings_folder']):
flag = False
# Render all files
out_name = os.path.join(
kw['output_folder'],
root, 'index.html'
)
yield {
'basename': self.name,
'name': out_name,
'file_dep': template_deps,
'targets': [out_name],
'actions': [(render_listing, [None, out_name, dirs, files])],
# This is necessary to reflect changes in blog title,
# sidebar links, etc.
'uptodate': [utils.config_changed(
self.site.config['GLOBAL_CONTEXT'])],
'clean': True,
}
for f in files:
ext = os.path.splitext(f)[-1]
if ext in ignored_extensions:
continue
in_name = os.path.join(root, f)
out_name = os.path.join(
kw['output_folder'],
root,
f) + '.html'
yield {
'basename': self.name,
'name': out_name,
'file_dep': template_deps + [in_name],
'targets': [out_name],
'actions': [(render_listing, [in_name, out_name])],
# This is necessary to reflect changes in blog title,
# sidebar links, etc.
'uptodate': [utils.config_changed(
self.site.config['GLOBAL_CONTEXT'])],
'clean': True,
}
if flag:
yield {
'basename': self.name,
'actions': [],
}
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