From a007dadeda0fe26ec1e66081d3c44e487e8afdce Mon Sep 17 00:00:00 2001
From: Heather <heather@cynede.net>
Date: Thu, 5 Dec 2013 15:36:08 +0400
Subject: [PATCH] simple pwd implementation

---
 Makefile   |  1 +
 README.md  |  1 -
 pwd/pwd.rs | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 52 insertions(+), 1 deletion(-)
 create mode 100644 pwd/pwd.rs

diff --git a/Makefile b/Makefile
index faa70ebf8..dd8a2e248 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,7 @@ EXES        := \
   env \
   false \
   printenv \
+  pwd \
   true \
   wc \
   whoami \
diff --git a/README.md b/README.md
index 3c05e623c..8f9f1f4be 100644
--- a/README.md
+++ b/README.md
@@ -98,7 +98,6 @@ To do
 - printf
 - prog-fprintf
 - ptx
-- pwd
 - readlink
 - realpath
 - relpath
diff --git a/pwd/pwd.rs b/pwd/pwd.rs
new file mode 100644
index 000000000..7e2db9417
--- /dev/null
+++ b/pwd/pwd.rs
@@ -0,0 +1,51 @@
+#[link(name="pwd", vers="1.0.0", author="Heather Cynede")];
+
+/*
+ * This file is part of the uutils coreutils package.
+ *
+ * (c) Derek Chiang <derekchiang93@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+extern mod extra;
+
+use std::os;
+use std::io::stderr;
+use extra::getopts::groups;
+
+static VERSION: &'static str = "1.0.0";
+
+fn main() {
+    let args = os::args();
+    let program = args[0].clone();
+    let opts = ~[
+        groups::optflag("", "help", "display this help and exit"),
+        groups::optflag("", "version", "output version information and exit"),
+    ];
+
+    let matches = match groups::getopts(args.tail(), opts) {
+        Ok(m) => m,
+        Err(f) => {
+            writeln!(&mut stderr() as &mut Writer,
+                "Invalid options\n{}", f.to_err_msg());
+            os::set_exit_status(1);
+            return
+        }  
+    };
+
+    if matches.opt_present("help") {
+        println!("pwd {}", VERSION);
+        println("");
+        println("Usage:");
+        println!("  {0:s} [OPTION] NAME...", program);
+        println("");
+        print(groups::usage("Print the full filename of the current working directory.", opts));
+    } else if matches.opt_present("version") {
+        return println("pwd version: " + VERSION);
+    } else {
+        let cwd = std::os::getcwd();
+        println!("{}", cwd.display());
+    }
+}