[kupfer] Use readlink instead of realpath in kupfer start script

[Ulrik Sverdrup <usverdrup src gnome org>]

commit 656b32d9223806dc9f63e7fc7535beb171ad0d7b
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Wed Sep 8 13:30:11 2010 +0200

    Use readlink instead of realpath in kupfer start script
    
    As Adi has alerted me, `realpath' is not a generally available
    program; instead we use readlink that is part of GNU coreutils. Kupfer
    start script updated to deal with the differences (error message when
    file does not exist).

 bin/kupfer.in |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/bin/kupfer.in b/bin/kupfer.in
index 3ff4dc6..03daecc 100755
--- a/bin/kupfer.in
+++ b/bin/kupfer.in
@@ -22,7 +22,7 @@
 PYTHON="@PYTHON@"
 PYTHONDIR="@PYTHONDIR@"
 test ${PYTHON:0:1} = "@" && PYTHON=python2.6
-test ${PYTHONDIR:0:1} = "@" && PYTHONDIR=$(dirname $(realpath $0))/..
+test ${PYTHONDIR:0:1} = "@" && PYTHONDIR=$(dirname $(readlink -f -- $0))/..
 
 SERVICE="se.kaizer.kupfer"
 OBJ="/interface"
@@ -53,7 +53,13 @@ _realpaths () {
 	# Emit realpaths for arguments, separated by NUL bytes
 	while test $# != 0
 	do
-		echo -ne $(realpath -- "$1")"\0"
+		LINK=$(readlink -e -- "$1")
+		if test $? != 0 ; then
+			echo "Error: $1 does not exist" > /dev/stderr
+			shift
+			continue
+		fi
+		echo -ne "$LINK\0"
 		shift
 	done
 }