Incorporate ebooklib from https://github.com/aerkalov/ebooklib

2017-11-06 07:42:48 +05:30
parent b5cbc3d529
commit f3d748f5dd
9 changed files with 2245 additions and 0 deletions
--- a/ebooklib/plugins/sourcecode.py
+++ b/ebooklib/plugins/sourcecode.py
@@ -0,0 +1,68 @@
+# This file is part of EbookLib.
+# Copyright (c) 2013 Aleksandar Erkalovic <aerkalov@gmail.com>
+#
+# EbookLib is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# EbookLib is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with EbookLib.  If not, see <http://www.gnu.org/licenses/>.
+
+from ebooklib.plugins.base import BasePlugin
+from ebooklib.utils import parse_html_string
+
+class SourceHighlighter(BasePlugin):    
+    def __init__(self):
+        pass
+
+    def html_before_write(self, book, chapter):
+        from lxml import etree, html
+
+        from pygments import highlight
+        from pygments.formatters import HtmlFormatter
+
+        from ebooklib import epub
+
+        try:
+            tree = parse_html_string(chapter.content)
+        except:
+            return
+
+        root = tree.getroottree()
+
+        had_source = False
+
+        if len(root.find('body')) != 0:
+            body = tree.find('body')
+            # check for embeded source
+            for source in body.xpath('//pre[contains(@class,"source-")]'):
+                css_class = source.get('class')
+
+                source_text = (source.text or '') + ''.join([html.tostring(child) for child in source.iterchildren()])
+
+                if 'source-python' in css_class:
+                    from pygments.lexers import PythonLexer
+
+#                    _text =  highlight(source_text, PythonLexer(), HtmlFormatter(linenos="inline"))
+                    _text =  highlight(source_text, PythonLexer(), HtmlFormatter())
+
+                if 'source-css' in css_class:
+                    from pygments.lexers import CssLexer
+
+                    _text =  highlight(source_text, CssLexer(), HtmlFormatter())
+
+                _parent = source.getparent()
+                _parent.replace(source, etree.XML(_text))
+
+                had_source = True
+
+        if had_source:
+            chapter.add_link(href="style/code.css", rel="stylesheet", type="text/css")
+            chapter.content = etree.tostring(tree, pretty_print=True, encoding='utf-8')        
+