strtok helper function

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@5592 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/base-files/default/etc/functions.sh b/package/base-files/default/etc/functions.sh
index f7cb878..aa5b000 100755 (executable)
--- a/package/base-files/default/etc/functions.sh
+++ b/package/base-files/default/etc/functions.sh
@@ -118,3 +118,27 @@ find_mtd_part() {
        echo "${PART:+/dev/mtdblock/$PART}"
 }
 
+strtok() { # <string> <variable> [<separator>] ...
+       local right
+       local left="$1"
+       local count=0
+
+       shift
+
+       while [ $# -gt 1 ]; do
+               right="${left%%$2*}"
+
+               [ "$right" = "$left" ] && break
+
+               left="${left#$right$2}"
+
+               export $1="$right"; count=$((count+1))
+               shift 2
+       done
+
+       if [ $# -gt 0 -a "$left" ]; then
+               export $1="$left"; count=$((count+1))
+       fi
+
+       return $count
+}