XCode script to automatically create Version and Build values from Git repo description. Based on multiple sources.

gitversioning

#!/bin/bash

# This script automatically sets the version and short version string of
# an Xcode project from the Git repository containing the project.
#
# To use this script in Xcode 4, add the contents to a "Run Script" build
# phase for your application target.

set -o errexit
set -o nounset

INFO_PLIST="${BUILT_PRODUCTS_DIR}/${WRAPPER_NAME}/Info"

# Get git tag and hash in the FulLVersion
FULL_VERSION=$(git --work-tree="${PROJECT_DIR}/" describe --dirty | sed -e 's/^v//' -e 's/g//')

# Use the latest tag for short version (You'll have to make sure that all your tags are of the format 0.0,
# this is to satisfy Apple's rule that short version be three integers separated by dots)
SHORT_VERSION=$(git --work-tree="${PROJECT_DIR}/" describe | awk '{split($0,a,"-"); print a[1]}')
VERSION=$(git --work-tree="${PROJECT_DIR}/" describe | awk '{split($0,a,"-"); print a[1] "." a[2]}')

# Check to see if the tag starts with with "ver", and remove if so.
if [[ "${VERSION}" == ver* ]]; then
    SHORT_VERSION="${SHORT_VERSION#*ver}"
    VERSION="${VERSION#*ver}"

    defaults write $INFO_PLIST CFBundleShortVersionString $SHORT_VERSION
    defaults write $INFO_PLIST CFBundleVersion $VERSION
    defaults write $INFO_PLIST FullVersion $FULL_VERSION

    echo "CFBundleVersion: ${VERSION}"
    echo "CFBundleShortVersionString: ${SHORT_VERSION}"
    echo "FullVersion: ${FULL_VERSION}"
else
    echo "ERROR: DID NOT FIND 'ver*' in Git Tag! Make sure tag exists! e.g. ver0.1"
    exit 2
fi