scripting version

scripts/version.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+version="$1"
+major=0
+minor=0
+build=0
+
+# break down the version number into it's components
+regex="([0-9]+).([0-9]+).([0-9]+)((-[A-Za-z]+)([0-9]+))?"
+if [[ $version =~ $regex ]]; then
+  major="${BASH_REMATCH[1]}"
+  minor="${BASH_REMATCH[2]}"
+  build="${BASH_REMATCH[3]}"
+  patchtype="${BASH_REMATCH[5]}"
+  patchnum="${BASH_REMATCH[6]}"
+fi
+
+# check paramater to see which number to increment
+if [[ "$2" == "feature" ]]; then
+  minor=$(echo $minor + 1 | bc)
+  build=0
+  patchtype=
+  patchnum=
+elif [[ "$2" == "build" ]]; then
+  build=$(echo $build + 1 | bc)
+  patchtype=
+  patchnum=
+elif [[ "$2" == "major" ]]; then
+  major=$(echo $major+1 | bc)
+  minor=0
+  build=0
+  patchtype=
+  patchnum=
+elif [[ "$2" == "patch" ]]; then
+  patchnum=$(echo $patchnum + 1 | bc)
+else
+  echo "usage: ./version.sh version_number [major/feature/build/patch]" >&2
+
+  exit -1
+fi
+
+# echo the new version number
+echo "${major}.${minor}.${build}${patchtype}${patchnum}"
+