From d4b064070d6b5c27fe461757a41dbbf802762d0b Mon Sep 17 00:00:00 2001
From: Intel A80486DX2-66 <larry.holst@disroot.org>
Date: Sat, 6 Jul 2024 16:19:58 +0200
Subject: [PATCH] Initial commit

---
 .editorconfig      | 16 +++++++++
 gitignore_clean.py | 83 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 .editorconfig
 create mode 100644 gitignore_clean.py

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..b2284e5
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,16 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = crlf
+indent_size = 4
+insert_final_newline = true
+
+[{*.{c,d,h,py,sh},Makefile}]
+max_line_length = 80
+
+[Makefile]
+indent_style = tab
+
+[*.{c,h}]
+trim_trailing_whitespace = true
diff --git a/gitignore_clean.py b/gitignore_clean.py
new file mode 100644
index 0000000..0db60d2
--- /dev/null
+++ b/gitignore_clean.py
@@ -0,0 +1,83 @@
+#!/usr/bin/python3
+
+from glob import glob
+from os import remove as os_remove
+from os.path import isdir as path_isdir, isfile as path_isfile, abspath, \
+    basename, dirname
+from pathlib import Path
+from re import sub as re_sub
+from shutil import rmtree
+
+DRY_RUN = False
+
+remove_comments = lambda s: re_sub(r"(?<!\\)#.*$", "", s).replace(r"\#", "#")
+
+
+def read_gitignore(path: str) -> str:
+    with open(path, "r", encoding="utf-8-sig") as gitignore_file:
+        res = gitignore_file.read().splitlines()
+    return res
+
+
+def delete(file_path: str) -> None:
+    is_dir = path_isdir(file_path)
+    is_file = path_isfile(file_path)
+
+    if not (is_dir or is_file):
+        return
+
+    display_file_path = abspath(file_path)
+    if DRY_RUN:
+        if is_dir:
+            print("Removing directory", display_file_path)
+        elif is_file:
+            print("Removing file", display_file_path)
+
+    if DRY_RUN:
+        return
+
+    if is_dir:
+        rmtree(file_path, ignore_errors=True)
+    elif is_file:
+        os_remove(file_path)
+
+
+def extend_wildcards(patterns: list) -> list:
+    res = []
+    for pattern in patterns:
+        processed_line = remove_comments(pattern).strip()
+
+        if processed_line.startswith("!"):
+            exception_pattern = processed_line[1:]
+            exceptions = glob(exception_pattern, recursive=True)
+            res = [path for path in res if path not in exceptions]
+        else:
+            res.extend(glob(processed_line, recursive=True))
+
+    return res
+
+
+def clean_gitignored_files(base_path: str = ".") -> None:
+    # FIXME: doesn't work as intended
+    for gitignore_path in list(Path(base_path).rglob("*.gitignore")):
+        directory = dirname(gitignore_path)
+        for file_path in extend_wildcards(read_gitignore(gitignore_path)):
+            full_path = directory + "/" + file_path
+            delete(full_path)
+
+
+if __name__ == "__main__":
+    from sys import argv
+
+    if "-h" in argv or "--help" in argv:
+        print("Usage:", basename(argv[0]), "[options]")
+        print()
+        print("[ ]: Optional arguments")
+        print()
+        print("Options:")
+        print("    -h, --help: Display this help text")
+        print("    -d, --dry-run: Only list files")
+    else:
+        if (argc := len(argv)) == 2 and argv[1] in ["-d", "--dry-run"]:
+            DRY_RUN = True
+        clean_gitignored_files()