#!/usr/bin/env python3

import argparse
import fnmatch
import itertools
import os
import pathlib
import sys

parser = argparse.ArgumentParser(
    "ignore-filter",
    description="Filter files from stdin using a .gitignore-style filter file",
)
parser.add_argument("filename", nargs="+", help="The filter file", type=str)

args = parser.parse_args()

ignore_patterns = list()
for f in args.filename:
    if not os.path.exists(f):
        raise RuntimeError(f"File {args.filename} does not exist.")
    with open(f, "r") as ignore_file:
        for line in [i.strip() for i in ignore_file.readlines()]:
            # Ignore comments.
            if line.startswith("#"):
                continue

            # Drop leading "/" or "./" ( this isn't 100% correct for
            # .gitignore format) .
            if line.startswith("/"):
                line = line[1:]
            elif line.startswith("./"):
                line = line[2:]

            ignore_patterns.append(line)

for c in sys.stdin:
    candidate = c.strip()
    match = False
    for seg in itertools.accumulate(
        pathlib.PurePath(candidate).parts, os.path.join
    ):
        if any(fnmatch.fnmatch(seg, i) for i in ignore_patterns):
            match = True
            break
    if not match:
        print(candidate)