Function parse_patch

openspace/skill_engine/patch.py:626–680

Parse a ``*** Begin Patch`` / ``*** End Patch`` block. Ported from ShinkaEvolve ``shinka/edit/apply_patch.py``.

(patch_text: str)

    return chunks, i

def parse_patch(patch_text: str) -> PatchResult:
    """Parse a ``*** Begin Patch`` / ``*** End Patch`` block.

    Ported from ShinkaEvolve ``shinka/edit/apply_patch.py``.
    """
    lines = patch_text.strip().split("\n")

    begin_idx = -1
    end_idx = -1
    for i, line in enumerate(lines):
        stripped = line.strip()
        if stripped == "*** Begin Patch":
            begin_idx = i
        elif stripped == "*** End Patch":
            end_idx = i

    if begin_idx == -1 or end_idx == -1 or begin_idx >= end_idx:
        raise PatchParseError(
            "Invalid patch format: missing or mis-ordered "
            "*** Begin Patch / *** End Patch markers"
        )

    hunks: List[PatchHunk] = []
    i = begin_idx + 1

    while i < end_idx:
        header = _parse_patch_header(lines, i)
        if header is None:
            i += 1
            continue

        file_path, move_path, next_idx = header

        if lines[i].startswith("*** Add File:"):
            content, next_idx = _parse_add_file_content(lines, next_idx)
            hunks.append(PatchHunk(type="add", path=file_path, contents=content))
            i = next_idx

        elif lines[i].startswith("*** Delete File:"):
            hunks.append(PatchHunk(type="delete", path=file_path))
            i = next_idx

        elif lines[i].startswith("*** Update File:"):
            chunks, next_idx = _parse_update_chunks(lines, next_idx)
            hunks.append(PatchHunk(
                type="update",
                path=file_path,
                move_path=move_path,
                chunks=chunks,
            ))
            i = next_idx
        else:
            i += 1

    return PatchResult(hunks=hunks)

def _compute_replacements(
    original_lines: List[str],