Get Meta-Data.
| 57 | |
| 58 | |
| 59 | class MetaPreprocessor(Preprocessor): |
| 60 | """ Get Meta-Data. """ |
| 61 | |
| 62 | def run(self, lines: list[str]) -> list[str]: |
| 63 | """ Parse Meta-Data and store in Markdown.Meta. """ |
| 64 | meta: dict[str, Any] = {} |
| 65 | key = None |
| 66 | if lines and BEGIN_RE.match(lines[0]): |
| 67 | lines.pop(0) |
| 68 | while lines: |
| 69 | line = lines.pop(0) |
| 70 | m1 = META_RE.match(line) |
| 71 | if line.strip() == '' or END_RE.match(line): |
| 72 | break # blank line or end of YAML header - done |
| 73 | if m1: |
| 74 | key = m1.group('key').lower().strip() |
| 75 | value = m1.group('value').strip() |
| 76 | try: |
| 77 | meta[key].append(value) |
| 78 | except KeyError: |
| 79 | meta[key] = [value] |
| 80 | else: |
| 81 | m2 = META_MORE_RE.match(line) |
| 82 | if m2 and key: |
| 83 | # Add another line to existing key |
| 84 | meta[key].append(m2.group('value').strip()) |
| 85 | else: |
| 86 | lines.insert(0, line) |
| 87 | break # no meta data - done |
| 88 | self.md.Meta = meta |
| 89 | return lines |
| 90 | |
| 91 | |
| 92 | def makeExtension(**kwargs): # pragma: no cover |