Merge pull request #1074 from Heather/pwd_lp

pwd: add support for -L and -P options

Cargo.lock

@@ -1153,6 +1153,7 @@ name = "stdbuf"
 version = "0.0.1"
 dependencies = [
  "getopts 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "libstdbuf 0.0.1",
  "tempdir 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "uucore 0.0.1",
@@ -1569,6 +1570,114 @@ dependencies = [
  "yes 0.0.1",
 ]
 
+[[package]]
+name = "uutils"
+version = "0.0.1"
+dependencies = [
+ "arch 0.0.1",
+ "base32 0.0.1",
+ "base64 0.0.1",
+ "basename 0.0.1",
+ "cat 0.0.1",
+ "chgrp 0.0.1",
+ "chmod 0.0.1",
+ "chown 0.0.1",
+ "chroot 0.0.1",
+ "cksum 0.0.1",
+ "comm 0.0.1",
+ "cp 0.0.1",
+ "cut 0.0.1",
+ "date 0.0.1",
+ "dircolors 0.0.1",
+ "dirname 0.0.1",
+ "du 0.0.1",
+ "echo 0.0.1",
+ "env 0.0.1",
+ "expand 0.0.1",
+ "expr 0.0.1",
+ "factor 0.0.1",
+ "false 0.0.1",
+ "filetime 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fmt 0.0.1",
+ "fold 0.0.1",
+ "groups 0.0.1",
+ "hashsum 0.0.1",
+ "head 0.0.1",
+ "hostid 0.0.1",
+ "hostname 0.0.1",
+ "id 0.0.1",
+ "install 0.0.1",
+ "kill 0.0.1",
+ "lazy_static 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "link 0.0.1",
+ "ln 0.0.1",
+ "logname 0.0.1",
+ "ls 0.0.1",
+ "mkdir 0.0.1",
+ "mkfifo 0.0.1",
+ "mknod 0.0.1",
+ "mktemp 0.0.1",
+ "more 0.0.1",
+ "mv 0.0.1",
+ "nice 0.0.1",
+ "nl 0.0.1",
+ "nohup 0.0.1",
+ "nproc 0.0.1",
+ "numfmt 0.0.1",
+ "od 0.0.1",
+ "paste 0.0.1",
+ "pathchk 0.0.1",
+ "pinky 0.0.1",
+ "printenv 0.0.1",
+ "printf 0.0.1",
+ "ptx 0.0.1",
+ "pwd 0.0.1",
+ "rand 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "readlink 0.0.1",
+ "realpath 0.0.1",
+ "regex 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "relpath 0.0.1",
+ "rm 0.0.1",
+ "rmdir 0.0.1",
+ "seq 0.0.1",
+ "shred 0.0.1",
+ "shuf 0.0.1",
+ "sleep 0.0.1",
+ "sort 0.0.1",
+ "split 0.0.1",
+ "stat 0.0.1",
+ "stdbuf 0.0.1",
+ "sum 0.0.1",
+ "sync 0.0.1",
+ "tac 0.0.1",
+ "tail 0.0.1",
+ "tee 0.0.1",
+ "tempdir 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "test 0.0.1",
+ "time 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
+ "timeout 0.0.1",
+ "touch 0.0.1",
+ "tr 0.0.1",
+ "true 0.0.1",
+ "truncate 0.0.1",
+ "tsort 0.0.1",
+ "tty 0.0.1",
+ "uname 0.0.1",
+ "unexpand 0.0.1",
+ "unindent 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "uniq 0.0.1",
+ "unix_socket 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unlink 0.0.1",
+ "uptime 0.0.1",
+ "users 0.0.1",
+ "uucore 0.0.1",
+ "wc 0.0.1",
+ "who 0.0.1",
+ "whoami 0.0.1",
+ "yes 0.0.1",
+]
+
 [[package]]
 name = "vec_map"
 version = "0.8.0"

src/pwd/pwd.rs

@@ -15,15 +15,28 @@ extern crate getopts;
 extern crate uucore;
 
 use std::env;
+use std::path::{Path, PathBuf};
+use std::io;
 
 static NAME: &'static str = "pwd";
 static VERSION: &'static str = env!("CARGO_PKG_VERSION");
 
+pub fn absolute_path(path: &Path) -> io::Result<PathBuf> {
+    let path_buf = path.canonicalize()?;
+
+    #[cfg(windows)]
+    let path_buf = Path::new(path_buf.as_path().to_string_lossy().trim_left_matches(r"\\?\")).to_path_buf();
+
+    Ok(path_buf)
+}
+
 pub fn uumain(args: Vec<String>) -> i32 {
     let mut opts = getopts::Options::new();
 
     opts.optflag("", "help", "display this help and exit");
     opts.optflag("", "version", "output version information and exit");
+    opts.optflag("L", "logical", "use PWD from environment, even if it contains symlinks");
+    opts.optflag("P", "physical", "avoid all symlinks");
 
     let matches = match opts.parse(&args[1..]) {
         Ok(m) => m,
@@ -43,7 +56,19 @@ Print the full filename of the current working directory.", NAME, VERSION);
     } else if matches.opt_present("version") {
         println!("{} {}", NAME, VERSION);
     } else {
-        println!("{}", env::current_dir().unwrap().display());
+        match env::current_dir() {
+            Ok(logical_path) => {
+                if matches.opt_present("logical") {
+                    println!("{}", logical_path.display());
+                } else {
+                    match absolute_path(&logical_path) {
+                        Ok(physical_path) => println!("{}", physical_path.display()),
+                        Err(e) => crash!(1, "failed to get absolute path {}", e)
+                    };
+                }
+            },
+            Err(e) => crash!(1, "failed to get current directory {}", e)
+        };
     }
 
     0