Refactored select-toolchain a bit

2 files changed, 33 insertions, 18 deletions

diff --git a/readme.md b/readme.md
index d58b043..e6591dd 100644
--- a/readme.md
+++ b/readme.md
@@ -13,13 +13,16 @@ Select what compiler to create using select-toolchain.sh script like
 
 ~~~
 $ ./select-toolchain.sh
-available configs:
-        1) config.cross-armv7
-        2) config.cross-i686
-        3) config.native-armv7a
-        4) config.native-i686
-4
-.config -> config.native-i686
+usage: ./select-toolchain.sh <config_number>
+
+supported configs are:
+    0) cross.armv7a9-builder-linux-gnueabihf
+    1) cross.i686-builder-linux-gnu
+    2) native.armv7a9-builder-linux-gnueabihf
+    3) native.i686-builder-linux-gnu
+
+$ ./select-toolchain.sh 1
+.config -> config.cross.i686-builder-linux-gnu
 ~~~
 
 and then execute "make". This will build toolchain and create opkg package.
diff --git a/select-toolchain.sh b/select-toolchain.sh
index d605642..31bc5ea 100755
--- a/select-toolchain.sh
+++ b/select-toolchain.sh
@@ -3,28 +3,40 @@
 configs=()
 n=0
 
-echo "available configs:"
+###
+# add all configs to array
+#
 
 for c in config.*
 do
-    ((n++))
     configs+=($c)
-    echo -e "\t$n) $c"
 done
 
-if [ $# -eq 0 ]
+###
+# if config is no passed, print usage and list available configs
+#
+
+if [ $# -ne 1 ]
 then
-    read choice
-else
-    choice="$1"
+    echo "usage: ${0} <config_number>"
+    echo ""
+    echo "supported configs are:"
+
+    for c in "${configs[@]}"
+    do
+        echo -e "\t$n) `echo $c | cut -f2- -d.`"
+        ((n++))
+    done
+
+    exit $n
 fi
 
-if [ $choice -lt 1 ] || [ $choice -gt $n ]
+if [ ! -f ${configs[${1}]} ]
 then
-    echo "selected config doesn't exist"
+    echo "config doesn't exist"
     exit 1
 fi
 
-echo ".config -> ${configs[choice - 1]}"
+echo ".config -> ${configs[${1}]}"
 rm -f .config
-ln -s ${configs[choice - 1]} .config
+ln -s ${configs[${1}]} .config