--- a/eric6/QScintilla/Exporters/ExporterHTML.py Wed Oct 23 19:57:12 2019 +0200
+++ b/eric6/QScintilla/Exporters/ExporterHTML.py Wed Oct 23 19:57:49 2019 +0200
@@ -525,56 +525,116 @@
)
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']
+ extensions = []
+ if Preferences.getEditor("PreviewMarkdownUsePyMdownExtensions"):
+ try:
+ import pymdownx # __IGNORE_EXCEPTION__ __IGNORE_WARNING__
+ # PyPI package is 'pymdown-extensions'
+
+ extensions = [
+ 'pymdownx.extra', 'pymdownx.caret', 'pymdownx.emoji',
+ 'pymdownx.mark', 'pymdownx.tilde', 'pymdownx.keys',
+ 'pymdownx.tasklist', 'pymdownx.smartsymbols',
+ ]
+ if Preferences.getEditor("PreviewMarkdownNLtoBR"):
+ extensions.append('nl2br')
+ except ImportError:
+ pass
+ if not extensions:
+ 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 _TildeExtension(markdown.Extension):
+ """
+ Class is placed here, because it depends on imported
+ markdown, and markdown import is lazy.
+
+ (see https://pythonhosted.org/Markdown/extensions/api.html
+ this page for details)
+ """
+ DEL_RE = r'(~~)(.+?)~~'
+ SUB_RE = r'(~)(.+?)~'
+
+ def extendMarkdown(self, md, md_globals):
+ # Create the sub pattern and insert it into markdown
+ # parser
+ sub_tag = markdown.inlinepatterns.SimpleTagPattern(
+ self.SUB_RE, 'sub')
+ md.inlinePatterns.add('sub', sub_tag, '>not_strong')
+
+ # Create the del pattern and insert it into markdown
+ # parser
+ del_tag = markdown.inlinepatterns.SimpleTagPattern(
+ self.DEL_RE, 'del')
+ md.inlinePatterns.add('del', del_tag, '>not_strong')
+
+ class _CaretExtension(markdown.Extension):
+ """
+ Class is placed here, because it depends on imported
+ markdown, and markdown import is lazy.
+
+ (see https://pythonhosted.org/Markdown/extensions/api.html
+ this page for details)
+ """
+ INS_RE = r'(\^\^)(.*?)\^\^'
+ SUP_RE = r'(\^)(.*?)\^'
+
+ def extendMarkdown(self, md, md_globals):
+ # Create the sup pattern and insert it into markdown
+ # parser
+ sup_tag = markdown.inlinepatterns.SimpleTagPattern(
+ self.SUP_RE, 'sup')
+ md.inlinePatterns.add('sup', sup_tag, '>not_strong')
+
+ # Create the ins pattern and insert it into markdown
+ # parser
+ ins_tag = markdown.inlinepatterns.SimpleTagPattern(
+ self.INS_RE, 'ins')
+ md.inlinePatterns.add('ins', ins_tag, '>not_strong')
+
+ class _MarkExtension(markdown.Extension):
+ """
+ Class is placed here, because it depends on imported
+ markdown, and markdown import is lazy.
+
+ (see https://pythonhosted.org/Markdown/extensions/api.html
+ this page for details)
+ """
+ MARK_RE = r'(==)(.*?)=='
+
+ def extendMarkdown(self, md, md_globals):
+ # Create the mark pattern and insert it into markdown
+ # parser
+ mark_tag = markdown.inlinepatterns.SimpleTagPattern(
+ self.MARK_RE, 'mark')
+ md.inlinePatterns.add('mark', mark_tag, '>not_strong')
+
+ extensions.extend([
+ _TildeExtension(), _CaretExtension(), _MarkExtension()
+ ])
- # 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())
+ if Preferences.getEditor("PreviewMarkdownMathJax"):
+ mathjax = (
+ "<script type='text/javascript' id='MathJax-script' async"
+ " src='https://cdn.jsdelivr.net/npm/mathjax@3/es5/"
+ "tex-chtml.js'>\n"
+ "</script>\n"
+ )
+ else:
+ mathjax = ""
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)
+ body = markdown.markdown(self.editor.text(),
+ extensions=extensions,
+ output_format=htmlFormat)
if htmlFormat == "xhtml1":
head = (
@@ -602,9 +662,10 @@
'''<meta name="Generator" content="eric6" />\n'''
'''<meta http-equiv="Content-Type" '''
'''content="text/html; charset=utf-8" />\n'''
+ '''{0}'''
'''</head>\n'''
'''<body>\n'''
- )
+ ).format(mathjax)
foot = '''\n</body>\n</html>\n'''
