69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
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# This file is part of EbookLib.
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# Copyright (c) 2013 Aleksandar Erkalovic <aerkalov@gmail.com>
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#
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# EbookLib is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# EbookLib is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with EbookLib. If not, see <http://www.gnu.org/licenses/>.
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from ebooklib.plugins.base import BasePlugin
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from ebooklib.utils import parse_html_string
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class SourceHighlighter(BasePlugin):
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def __init__(self):
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pass
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def html_before_write(self, book, chapter):
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from lxml import etree, html
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from pygments import highlight
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from pygments.formatters import HtmlFormatter
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from ebooklib import epub
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try:
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tree = parse_html_string(chapter.content)
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except:
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return
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root = tree.getroottree()
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had_source = False
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if len(root.find('body')) != 0:
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body = tree.find('body')
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# check for embeded source
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for source in body.xpath('//pre[contains(@class,"source-")]'):
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css_class = source.get('class')
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source_text = (source.text or '') + ''.join([html.tostring(child) for child in source.iterchildren()])
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if 'source-python' in css_class:
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from pygments.lexers import PythonLexer
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# _text = highlight(source_text, PythonLexer(), HtmlFormatter(linenos="inline"))
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_text = highlight(source_text, PythonLexer(), HtmlFormatter())
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if 'source-css' in css_class:
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from pygments.lexers import CssLexer
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_text = highlight(source_text, CssLexer(), HtmlFormatter())
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_parent = source.getparent()
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_parent.replace(source, etree.XML(_text))
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had_source = True
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if had_source:
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chapter.add_link(href="style/code.css", rel="stylesheet", type="text/css")
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chapter.content = etree.tostring(tree, pretty_print=True, encoding='utf-8')
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