pwd: Add pwd.py

Author: Expertcoderz

src/pwd.py

@@ -0,0 +1,53 @@
+#!/usr/bin/python3
+
+import os
+from optparse import OptionParser
+
+
+def pwd(opts):
+    resolved_pwd = os.getcwd()
+
+    print(
+        resolved_pwd
+        if opts.resolve
+        or not (
+            # Only use PWD's contents if it accurately
+            # points to the current working directory
+            # and the -L flag is also given.
+            (pwd_from_env := os.environ.get("PWD"))
+            and os.path.samefile(pwd_from_env, resolved_pwd)
+        )
+        else pwd_from_env
+    )
+
+
+if __name__ == "__main__":
+    parser = OptionParser(
+        usage="Usage: %prog [OPTION]",
+        description="Print the path to the current working directory.",
+        add_help_option=False,
+    )
+    parser.add_option("--help", action="help", help="show usage information and exit")
+
+    parser.add_option(
+        "-L",
+        "--logical",
+        dest="resolve",
+        action="store_false",
+        help="don't resolve symlinks",
+    )
+    parser.add_option(
+        "-P",
+        "--physical",
+        dest="resolve",
+        action="store_true",
+        default=True,
+        help="resolve all encountered symlinks",
+    )
+
+    opts, args = parser.parse_args()
+
+    if args:
+        parser.error("too many arguments")
+
+    pwd(opts)