| """Shared Markdown table pre-normalization for platform renderers.""" |
|
|
| import re |
|
|
| _TABLE_SEP_RE = re.compile(r"^\s*\|?\s*:?-{3,}:?\s*(\|\s*:?-{3,}:?\s*)+\|?\s*$") |
| _FENCE_RE = re.compile(r"^\s*```") |
|
|
|
|
| def _is_gfm_table_header_line(line: str) -> bool: |
| """Return whether a line looks like a GFM table header.""" |
| if "|" not in line: |
| return False |
| if _TABLE_SEP_RE.match(line): |
| return False |
| parts = [part.strip() for part in line.strip().strip("|").split("|")] |
| return len([part for part in parts if part]) >= 2 |
|
|
|
|
| def normalize_gfm_tables(text: str) -> str: |
| """Insert blank lines before detected tables outside fenced code blocks.""" |
| lines = text.splitlines() |
| if len(lines) < 2: |
| return text |
|
|
| out_lines: list[str] = [] |
| in_fence = False |
|
|
| for idx, line in enumerate(lines): |
| if _FENCE_RE.match(line): |
| in_fence = not in_fence |
| out_lines.append(line) |
| continue |
|
|
| if ( |
| not in_fence |
| and idx + 1 < len(lines) |
| and _is_gfm_table_header_line(line) |
| and _TABLE_SEP_RE.match(lines[idx + 1]) |
| and out_lines |
| and out_lines[-1].strip() != "" |
| ): |
| indent_match = re.match(r"^(\s*)", line) |
| out_lines.append(indent_match.group(1) if indent_match else "") |
|
|
| out_lines.append(line) |
|
|
| return "\n".join(out_lines) |
|
|
