basename: Add basename.py

Author: Expertcoderz

src/basename.py

@@ -0,0 +1,55 @@
+#!/usr/bin/python3
+
+import os
+from optparse import OptionParser
+
+
+def basename(opts, names: list[str]):
+    for name in names:
+        print(
+            os.path.basename(name.removesuffix(opts.suffix)),
+            end="\0" if opts.zero else "\n",
+        )
+
+
+if __name__ == "__main__":
+    parser = OptionParser(
+        usage="Usage: %prog NAME [SUFFIX]\n       %prog OPTION... NAME...",
+        description="Print the last component of each path NAME.",
+        add_help_option=False,
+    )
+    parser.add_option("--help", action="help", help="show usage information and exit")
+
+    parser.add_option(
+        "-a", "--multiple", action="store_true", help="support multiple NAMES"
+    )
+    parser.add_option(
+        "-s",
+        "--suffix",
+        metavar="SUFFIX",
+        help="remove trailing SUFFIX; implies -a",
+    )
+
+    parser.add_option(
+        "-z",
+        "--zero",
+        action="store_true",
+        help="terminate outputs with NUL instead of newline",
+    )
+
+    opts, args = parser.parse_args()
+
+    if not args:
+        parser.error("missing operand")
+
+    if opts.suffix:
+        opts.multiple = True
+    elif not opts.multiple and len(args) > 1:
+        if len(args) > 2:
+            parser.error(f"extra operand '{args[2]}'")
+
+        opts.suffix = args.pop()
+    else:
+        opts.suffix = ""
+
+    basename(opts, args)