diff -r 159e6057ad34 -r 9ef6a28f1694 QScintilla/Exporters/ExporterHTML.py
--- a/QScintilla/Exporters/ExporterHTML.py Mon Aug 07 12:19:34 2017 +0200
+++ b/QScintilla/Exporters/ExporterHTML.py Mon Aug 07 18:00:51 2017 +0200
@@ -9,10 +9,16 @@
from __future__ import unicode_literals
+try: # Only for Py2
+ import StringIO as io # __IGNORE_EXCEPTION__
+except (ImportError, NameError):
+ import io # __IGNORE_WARNING__
+
# This code is a port of the C++ code found in SciTE 1.74
# Original code: Copyright 1998-2006 by Neil Hodgson <neilh@scintilla.org>
import os
+import sys
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QCursor, QFontInfo
@@ -378,39 +384,206 @@
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
QApplication.processEvents()
- tabSize = Preferences.getEditor("TabWidth")
- if tabSize == 0:
- tabSize = 4
- wysiwyg = Preferences.getEditorExporter("HTML/WYSIWYG")
- folding = Preferences.getEditorExporter("HTML/Folding")
- onlyStylesUsed = Preferences.getEditorExporter(
- "HTML/OnlyStylesUsed")
- titleFullPath = Preferences.getEditorExporter(
- "HTML/FullPathAsTitle")
- tabs = Preferences.getEditorExporter("HTML/UseTabs")
+ fn = self.editor.getFileName()
+ if fn:
+ extension = os.path.normcase(os.path.splitext(fn)[1][1:])
+ else:
+ extension = ""
- generator = HTMLGenerator(self.editor)
- html = generator.generate(
- tabSize=tabSize,
- useTabs=tabs,
- wysiwyg=wysiwyg,
- folding=folding,
- onlyStylesUsed=onlyStylesUsed,
- titleFullPath=titleFullPath
- )
+ if extension in \
+ Preferences.getEditor("PreviewMarkdownFileNameExtensions") or \
+ self.editor.getLanguage().lower() == "markdown":
+ # export markdown to HTML
+ html = self.__generateFromMarkdown()
+ elif extension in \
+ Preferences.getEditor("PreviewRestFileNameExtensions") or \
+ self.editor.getLanguage().lower() == "restructuredtext":
+ # export ReST to HTML
+ html = self.__generateFromReSTDocutils()
+ else:
+ tabSize = Preferences.getEditor("TabWidth")
+ if tabSize == 0:
+ tabSize = 4
+ wysiwyg = Preferences.getEditorExporter("HTML/WYSIWYG")
+ folding = Preferences.getEditorExporter("HTML/Folding")
+ onlyStylesUsed = Preferences.getEditorExporter(
+ "HTML/OnlyStylesUsed")
+ titleFullPath = Preferences.getEditorExporter(
+ "HTML/FullPathAsTitle")
+ tabs = Preferences.getEditorExporter("HTML/UseTabs")
+
+ generator = HTMLGenerator(self.editor)
+ html = generator.generate(
+ tabSize=tabSize,
+ useTabs=tabs,
+ wysiwyg=wysiwyg,
+ folding=folding,
+ onlyStylesUsed=onlyStylesUsed,
+ titleFullPath=titleFullPath
+ )
- try:
- f = open(filename, "w", encoding="utf-8")
- f.write(html)
- f.close()
- except IOError as err:
+ if html:
+ try:
+ f = open(filename, "w", encoding="utf-8")
+ f.write(html)
+ f.close()
+ except IOError as err:
+ QApplication.restoreOverrideCursor()
+ E5MessageBox.critical(
+ self.editor,
+ self.tr("Export source"),
+ self.tr(
+ """<p>The source could not be exported to"""
+ """ <b>{0}</b>.</p><p>Reason: {1}</p>""")
+ .format(filename, str(err)))
+ else:
QApplication.restoreOverrideCursor()
E5MessageBox.critical(
self.editor,
self.tr("Export source"),
self.tr(
"""<p>The source could not be exported to"""
- """ <b>{0}</b>.</p><p>Reason: {1}</p>""")
- .format(filename, str(err)))
+ """ <b>{0}</b>.</p><p>Reason: No HTML code"""
+ """ generated.</p>""")
+ .format(filename))
finally:
QApplication.restoreOverrideCursor()
+
+ def __generateFromReSTDocutils(self):
+ """
+ Private method to convert ReST text into HTML using 'docutils'.
+
+ @return processed HTML (string)
+ """
+ if 'sphinx' in sys.modules:
+ # Make sure any Sphinx polution of docutils has been removed.
+ unloadKeys = [k for k in sys.modules.keys()
+ if k.startswith(('docutils', 'sphinx'))]
+ for key in unloadKeys:
+ sys.modules.pop(key)
+
+ try:
+ import docutils.core # __IGNORE_EXCEPTION__
+ except ImportError:
+ E5MessageBox.critical(
+ self.editor,
+ self.tr("Export source"),
+ self.tr(
+ """<p>ReStructuredText export requires the"""
+ """ <b>python-docutils</b> package.<br/>Install it with"""
+ """ your package manager, 'pip install docutils' or see"""
+ """ <a href="http://pypi.python.org/pypi/docutils">"""
+ """this page.</a></p>""")
+ )
+ return ""
+
+ htmlFormat = Preferences.getEditor(
+ "PreviewRestDocutilsHTMLFormat").lower()
+ # redirect sys.stderr because we are not interested in it here
+ origStderr = sys.stderr
+ sys.stderr = io.StringIO()
+ html = docutils.core.publish_string(
+ self.editor.text(), writer_name=htmlFormat).decode("utf-8")
+ sys.stderr = origStderr
+ return html
+
+ def __generateFromMarkdown(self):
+ """
+ Private method to convert Markdown text into HTML.
+
+ @return processed HTML
+ @rtype str
+ """
+ try:
+ import markdown # __IGNORE_EXCEPTION__
+ except ImportError:
+ E5MessageBox.critical(
+ self.editor,
+ self.tr("Export source"),
+ self.tr(
+ """<p>Markdown export requires the <b>python-markdown"""
+ """</b> package.<br/>Install it with your package"""
+ """ manager, pip install docutils' or see """
+ """<a href="http://pythonhosted.org/Markdown/install"""
+ """.html"> installation instructions.</a></p>""")
+ )
+ return ""
+
+ try:
+ import mdx_mathjax # __IGNORE_EXCEPTION__ __IGNORE_WARNING__
+ except ImportError:
+ # mathjax doesn't require import statement if installed as
+ # extension
+ pass
+
+ if Preferences.getEditor("PreviewMarkdownNLtoBR"):
+ extensions = ['fenced_code', 'nl2br', 'extra']
+ else:
+ extensions = ['fenced_code', 'extra']
+
+ # version 2.0 supports only extension names, not instances
+ if markdown.version_info[0] > 2 or \
+ (markdown.version_info[0] == 2 and
+ markdown.version_info[1] > 0):
+ class _StrikeThroughExtension(markdown.Extension):
+ """
+ Class is placed here, because it depends on imported markdown,
+ and markdown import is lazy.
+
+ (see http://achinghead.com/
+ python-markdown-adding-insert-delete.html this page for
+ details)
+ """
+ DEL_RE = r'(~~)(.*?)~~'
+
+ def extendMarkdown(self, md, md_globals):
+ # Create the del pattern
+ del_tag = markdown.inlinepatterns.SimpleTagPattern(
+ self.DEL_RE, 'del')
+ # Insert del pattern into markdown parser
+ md.inlinePatterns.add('del', del_tag, '>not_strong')
+
+ extensions.append(_StrikeThroughExtension())
+
+ htmlFormat = Preferences.getEditor("PreviewMarkdownHTMLFormat").lower()
+ try:
+ body = markdown.markdown(self.editor.text(),
+ extensions=extensions + ['mathjax'],
+ output_format=htmlFormat)
+ except (ImportError, ValueError):
+ # markdown raises ValueError or ImportError, depends on version
+ # It is not clear, how to distinguish missing mathjax from other
+ # errors. So keep going without mathjax.
+ body = markdown.markdown(self.editor.text(),
+ extensions=extensions,
+ output_format=htmlFormat)
+
+ if htmlFormat == "xhtml1":
+ head = \
+ '''<!DOCTYPE html PUBLIC "-//W3C//DTD''' \
+ ''' XHTML 1.0 Transitional//EN"\n''' \
+ ''' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional''' \
+ '''.dtd">\n''' \
+ '''<html xmlns="http://www.w3.org/1999/xhtml">\n'''
+ elif htmlFormat == "html5":
+ head = \
+ '''<!DOCTYPE html>\n''' \
+ '''<html lang="EN">\n'''
+ else:
+ head = '<html lang="EN">\n'
+ head += '''<head>\n'''
+ if Preferences.getEditorExporter("HTML/FullPathAsTitle"):
+ head += '''<title>{0}</title>\n'''.format(
+ self.editor.getFileName())
+ else:
+ head += '''<title>{0}</title>\n'''.format(
+ os.path.basename(self.editor.getFileName()))
+ head += '''<meta name="Generator" content="eric6" />\n''' \
+ '''<meta http-equiv="Content-Type" ''' \
+ '''content="text/html; charset=utf-8" />\n''' \
+ '''</head>\n''' \
+ '''<body>\n'''
+
+ foot = '''\n</body>\n</html>\n'''
+
+ return head + body + foot
