93 lines
2.7 KiB
Python
93 lines
2.7 KiB
Python
#!/usr/bin/env python3
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"""Prepare a temporary source tree for docs generation.
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The live source keeps readable display-math blocks written as standalone
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`$$ ... $$` docstring sections. MkDocs + mkdocstrings does not consistently
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preserve those blocks as MathJax input when they appear inside API docstrings,
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so the docs build rewrites them in a temporary copy into explicit
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`<div class="arithmatex">...</div>` containers.
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"""
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from __future__ import annotations
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from pathlib import Path
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import shutil
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import sys
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def _rewrite_display_math(text: str) -> str:
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lines = text.splitlines(keepends=True)
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output: list[str] = []
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in_block = False
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block_indent = ""
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for line in lines:
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stripped = line.strip()
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indent = line[: len(line) - len(line.lstrip())]
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if not in_block:
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if stripped == "$$":
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block_indent = indent
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output.append(f'{block_indent}<div class="arithmatex">\\[\n')
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in_block = True
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continue
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if stripped.startswith("$$") and stripped.endswith("$$") and stripped != "$$":
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body = stripped[2:-2].strip()
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output.append(f'{indent}<div class="arithmatex">\\[ {body} \\]</div>\n')
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continue
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if stripped.startswith("$$"):
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block_indent = indent
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body = stripped[2:].strip()
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output.append(f'{block_indent}<div class="arithmatex">\\[\n')
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if body:
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output.append(f"{block_indent}{body}\n")
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in_block = True
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continue
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output.append(line)
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continue
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if stripped == "$$":
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output.append(f"{block_indent}\\]</div>\n")
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in_block = False
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block_indent = ""
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continue
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if stripped.endswith("$$"):
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body = stripped[:-2].rstrip()
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if body:
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output.append(f"{block_indent}{body}\n")
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output.append(f"{block_indent}\\]</div>\n")
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in_block = False
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block_indent = ""
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continue
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output.append(line)
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if in_block:
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raise ValueError("unterminated display-math block")
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return "".join(output)
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def main() -> int:
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if len(sys.argv) != 3:
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print("usage: prepare_docs_sources.py <src_package_dir> <dst_root>", file=sys.stderr)
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return 2
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src_dir = Path(sys.argv[1]).resolve()
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dst_root = Path(sys.argv[2]).resolve()
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dst_pkg = dst_root / src_dir.name
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shutil.copytree(src_dir, dst_pkg)
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for path in dst_pkg.rglob("*.py"):
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path.write_text(_rewrite_display_math(path.read_text()))
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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