Function parse_diff

examples/gitflic_ci/post_review.py:120–162

Split combined unified diff text into per-file FileDiff sections.

(diff_text)

def parse_diff(diff_text):
    """Split combined unified diff text into per-file FileDiff sections."""
    files = []
    current = None
    buf = []

    def flush():
        if current is not None:
            current.text = "\n".join(buf)
            files.append(current)

    for line in diff_text.split("\n"):
        m = _DIFF_HEADER_RE.match(line)
        if m:
            flush()
            buf = []
            current = FileDiff(old_path=m.group(1), new_path=m.group(2))
        if current is None:
            continue
        if line.startswith("Binary files ") or line.startswith("GIT binary patch"):
            current.is_binary = True
        elif line.startswith("new file mode"):
            current.is_new = True
        elif line.startswith("deleted file mode"):
            current.is_deleted = True
        elif line.startswith("--- "):
            path = line[4:]
            if path == "/dev/null":
                current.is_new = True
                current.old_path = "/dev/null"
            elif path.startswith("a/"):
                current.old_path = path[2:]
        elif line.startswith("+++ "):
            path = line[4:]
            if path == "/dev/null":
                current.is_deleted = True
                current.new_path = "/dev/null"
            elif path.startswith("b/"):
                current.new_path = path[2:]
        buf.append(line)

    flush()
    return files


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