# HG changeset patch
# User Felix Janda <felix.janda@posteo.de>
# Date 1356627399 -3600
# Node ID adab8adf5f6d18717a0404076cce039658d3a807
# Parent  edde4d30e98c8c0760baf72128e888a4c7900504
Add options -L and -P to pwd.

diff -r edde4d30e98c -r adab8adf5f6d toys/posix/pwd.c
--- a/toys/posix/pwd.c	Sat Dec 29 03:18:34 2012 -0600
+++ b/toys/posix/pwd.c	Thu Dec 27 17:56:39 2012 +0100
@@ -3,26 +3,34 @@
  * Copyright 2006 Rob Landley <rob@landley.net>
  *
  * See http://opengroup.org/onlinepubs/9699919799/utilities/echo.html
- *
- * TODO: add -L -P
 
-USE_PWD(NEWTOY(pwd, NULL, TOYFLAG_BIN))
+USE_PWD(NEWTOY(pwd, ">0LP[!LP]", TOYFLAG_BIN))
 
 config PWD
   bool "pwd"
   default y
   help
-    usage: pwd
+    usage: pwd [-L|-P]
 
     The print working directory command prints the current directory.
+
+    -P  Avoid all symlinks
+    -L  Use the value of the environment variable "PWD" if valid
+
+    The option "-L" is implied by default.
 */
 
+#define FOR_pwd
 #include "toys.h"
 
 void pwd_main(void)
 {
-  char *pwd = xgetcwd();
+  char *pwd = xgetcwd(), *env_pwd;
+  struct stat st[2];
 
-  xprintf("%s\n", pwd);
+  if (!(toys.optflags & FLAG_P) && (env_pwd = getenv("PWD")) &&
+    !stat(pwd, &st[0]) && !stat(env_pwd, &st[1]) &&
+    (st[0].st_ino == st[1].st_ino)) xprintf("%s\n", env_pwd);
+  else xprintf("%s\n", pwd);
   if (CFG_TOYBOX_FREE) free(pwd);
 }