#!/usr/bin/env python3

import sys
stem = sys.argv[1]

# We "parse" the diff output, so we look at the lines that contain a "tee", like:
# ├── +++ b/firefox
# │ ├── +++ b/firefox/libxul.so
# │ │ ├── readelf --wide --notes {}
# We ignore lines like the last one, to only report file names. And we ignore
# lines for directories such as the first one.
TEE = "├── "
VERTICAL_LINE = "│"
paths = set()
with open(f"{stem}.txt") as fh:
    for l in fh:
        l = l.rstrip()
        before, tee, after = l.partition(TEE)
        if not tee:
            continue
        before = before.split()
        assert all(x == VERTICAL_LINE for x in before)
        depth = len(before)
        _, plus, after = after.partition("+++ ")
        if not plus:
            continue
        _, b, full_path = after.partition("b/")
        assert b == "b/"
        parent_path = "/".join(full_path.split("/")[:-1])
        if parent_path in paths:
            paths.remove(parent_path)
        if full_path:
            paths.add(full_path)

for p in sorted(paths):
    print(f"TEST-UNEXPECTED-FAIL | {p} differs. See the {stem}.html or {stem}.txt artifact")