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| from latex2mathml.converter import convert as tex2mathml | |
| import re | |
| incomplete = '<font style="color:orange;" class="tooltip">⚠<span class="tooltiptext">formula incomplete</span></font>' | |
| convError = '<font style="color:red" class="tooltip">⚠<span class="tooltiptext">LaTeX-convert-error</span></font>' | |
| def convert(mdtex, extensions=[], splitParagraphs=True): | |
| ''' converts recursively the Markdown-LaTeX-mixture to HTML with MathML ''' | |
| found = False | |
| # handle all paragraphs separately (prevents aftereffects) | |
| if splitParagraphs: | |
| parts = re.split("\n\n", mdtex) | |
| result = '' | |
| for part in parts: | |
| result += convert(part, extensions, splitParagraphs=False) | |
| return result | |
| # find first $$-formula: | |
| parts = re.split('\${2}', mdtex, 2) | |
| if len(parts)>1: | |
| found = True | |
| result = convert(parts[0], extensions, splitParagraphs=False)+'\n' | |
| try: | |
| result += '<div class="blockformula">'+tex2mathml(parts[1])+'</div>\n' | |
| except: | |
| result += '<div class="blockformula">'+convError+'</div>' | |
| if len(parts)==3: | |
| result += convert(parts[2], extensions, splitParagraphs=False) | |
| else: | |
| result += '<div class="blockformula">'+incomplete+'</div>' | |
| # else find first $-formulas: | |
| else: | |
| parts = re.split('\${1}', mdtex, 2) | |
| if len(parts)>1 and not found: | |
| found = True | |
| try: | |
| mathml = tex2mathml(parts[1]) | |
| except: | |
| mathml = convError | |
| if parts[0].endswith('\n\n') or parts[0]=='': # make sure textblock starts before formula! | |
| parts[0]=parts[0]+'​' | |
| if len(parts)==3: | |
| result = convert(parts[0]+mathml+parts[2], extensions, splitParagraphs=False) | |
| else: | |
| result = convert(parts[0]+mathml+incomplete, extensions, splitParagraphs=False) | |
| # else find first \[..\]-equation: | |
| else: | |
| parts = re.split(r'\\\[', mdtex, 1) | |
| if len(parts)>1 and not found: | |
| found = True | |
| result = convert(parts[0], extensions, splitParagraphs=False)+'\n' | |
| parts = re.split(r'\\\]', parts[1], 1) | |
| try: | |
| result += '<div class="blockformula">'+tex2mathml(parts[0])+'</div>\n' | |
| except: | |
| result += '<div class="blockformula">'+convError+'</div>' | |
| if len(parts)==2: | |
| result += convert(parts[1], extensions, splitParagraphs=False) | |
| else: | |
| result += '<div class="blockformula">'+incomplete+'</div>' | |
| # else find first \(..\)-equation: | |
| else: | |
| parts = re.split(r'\\\(', mdtex, 1) | |
| if len(parts)>1 and not found: | |
| found = True | |
| subp = re.split(r'\\\)', parts[1], 1) | |
| try: | |
| mathml = tex2mathml(subp[0]) | |
| except: | |
| mathml = convError | |
| if parts[0].endswith('\n\n') or parts[0]=='': # make sure textblock starts before formula! | |
| parts[0]=parts[0]+'​' | |
| if len(subp)==2: | |
| result = convert(parts[0]+mathml+subp[1], extensions, splitParagraphs=False) | |
| else: | |
| result = convert(parts[0]+mathml+incomplete, extensions, splitParagraphs=False) | |
| if not found: | |
| result = mdtex | |
| return result |