| __all__ = ['math', 'math_in_quote', 'math_in_list'] | |
| BLOCK_MATH_PATTERN = r'^ {0,3}\$\$[ \t]*\n(?P<math_text>[\s\S]+?)\n\$\$[ \t]*$' | |
| INLINE_MATH_PATTERN = r'\$(?!\s)(?P<math_text>.+?)(?!\s)\$' | |
| def parse_block_math(block, m, state): | |
| text = m.group('math_text') | |
| state.append_token({'type': 'block_math', 'raw': text}) | |
| return m.end() + 1 | |
| def parse_inline_math(inline, m, state): | |
| text = m.group('math_text') | |
| state.append_token({'type': 'inline_math', 'raw': text}) | |
| return m.end() | |
| def render_block_math(renderer, text): | |
| return '<div class="math">$$\n' + text + '\n$$</div>\n' | |
| def render_inline_math(renderer, text): | |
| return r'<span class="math">\(' + text + r'\)</span>' | |
| def math(md): | |
| """A mistune plugin to support math. The syntax is used | |
| by many markdown extensions: | |
| .. code-block:: text | |
| Block math is surrounded by $$: | |
| $$ | |
| f(a)=f(b) | |
| $$ | |
| Inline math is surrounded by `$`, such as $f(a)=f(b)$ | |
| :param md: Markdown instance | |
| """ | |
| md.block.register('block_math', BLOCK_MATH_PATTERN, parse_block_math, before='list') | |
| md.inline.register('inline_math', INLINE_MATH_PATTERN, parse_inline_math, before='link') | |
| if md.renderer and md.renderer.NAME == 'html': | |
| md.renderer.register('block_math', render_block_math) | |
| md.renderer.register('inline_math', render_inline_math) | |
| def math_in_quote(md): | |
| """Enable block math plugin in block quote.""" | |
| md.block.insert_rule(md.block.block_quote_rules, 'block_math', before='list') | |
| def math_in_list(md): | |
| """Enable block math plugin in list.""" | |
| md.block.insert_rule(md.block.list_rules, 'block_math', before='list') | |