Function _parse_update_chunks

openspace/skill_engine/patch.py:582–624

Parse ``@@``-delimited change chunks for an Update File hunk.

(
    lines: List[str], start_idx: int,
)

    return content, i

def _parse_update_chunks(
    lines: List[str], start_idx: int,
) -> Tuple[List[UpdateChunk], int]:
    """Parse ``@@``-delimited change chunks for an Update File hunk."""
    chunks: List[UpdateChunk] = []
    i = start_idx
    while i < len(lines) and not lines[i].startswith("***"):
        if lines[i].startswith("@@"):
            context_line = lines[i][2:].strip()
            i += 1
            old_lines: List[str] = []
            new_lines: List[str] = []
            is_end_of_file = False

            while i < len(lines):
                cl = lines[i]
                if cl.startswith("@@"):
                    break
                if cl.startswith("***") and cl != "*** End of File":
                    break
                if cl == "*** End of File":
                    is_end_of_file = True
                    i += 1
                    break
                if cl.startswith(" "):
                    old_lines.append(cl[1:])
                    new_lines.append(cl[1:])
                elif cl.startswith("-"):
                    old_lines.append(cl[1:])
                elif cl.startswith("+"):
                    new_lines.append(cl[1:])
                i += 1

            chunks.append(UpdateChunk(
                old_lines=old_lines,
                new_lines=new_lines,
                change_context=context_line or None,
                is_end_of_file=is_end_of_file,
            ))
        else:
            i += 1

    return chunks, i

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