| |
| |
|
|
| """Render titles explicitly declared by native chart metadata as table captions.""" |
| import re |
| from html import escape |
|
|
| def transform(text): |
| changed=0 |
| def chart(m): |
| nonlocal changed |
| body=m[2] |
| if '<chart' in body:return m[0] |
| title=re.search(r'(?m)^title:[ \t]*([^\n]*)$',body) |
| if not title:return m[0] |
| title_text=title[1].strip() |
| if not title_text:return m[0] |
| count=0 |
| pattern=re.compile(r'(?m)^\|[^\n]*\|[ \t]*\n\|[ \t:|\-]+\|[ \t]*\n(?:\|[^\n]*\|[ \t]*(?:\n|$))+') |
| def table(t): |
| nonlocal count |
| raw=t[0] |
| if r'\|' in raw or '`' in raw:return raw |
| lines=[a.strip() for a in raw.strip().splitlines()];cells=[[c.strip() for c in line.strip('|').split('|')] for line in lines] |
| if len(cells)<3 or any(len(row)!=len(cells[0]) for row in cells) or any(not re.fullmatch(r':?-+:?',c.replace(' ','')) for c in cells[1]):return raw |
| count+=1 |
| result='<table><caption>'+escape(title_text)+'</caption><thead><tr>'+''.join('<th scope="col">'+escape(c)+'</th>' for c in cells[0])+'</tr></thead><tbody>' |
| result+=''.join('<tr>'+''.join('<td>'+escape(c)+'</td>' for c in row)+'</tr>' for row in cells[2:])+'</tbody></table>\n' |
| return result |
| new=pattern.sub(table,body) |
| if not count:return m[0] |
| |
| new=re.sub(r'(?m)^title:[ \t]*[^\n]*\n?', '',new,count=1) |
| changed+=count;return m[1]+new+m[3] |
| out=re.sub(r'(<chart\b[^>]*>)(.*?)(</chart>)',chart,text,flags=re.S) |
| return out,changed |
|
|
