Automatically bump up the version number when creating an iOS Release build

version.sh

# 
# License: Public domain
#

function bump_version() {
    touch "$PROJECT_DIR/LASTVERSION"
    typeset -i BUILD_VERSION=$(cat "$PROJECT_DIR/LASTVERSION")
    BUILD_VERSION=$((BUILD_VERSION+1))
    echo $BUILD_VERSION > "$PROJECT_DIR/LASTVERSION"
    echo "Bumped up build version to $BUILD_VERSION"
}

if [ "${CONFIGURATION}" = "Release" ]; then
bump_version
fi

typeset -i BUILD_VERSION=$(cat "$PROJECT_DIR/LASTVERSION")

# Get location of unparsed Info.plist
PROJ_INFO_PLIST_INPUT=$(basename "$INFOPLIST_FILE" .plist)

# Get location of parsed Info.plist
PROJ_INFO_PLIST_PATH="$BUILT_PRODUCTS_DIR/$FULL_PRODUCT_NAME/Info"

# Get version number from unparsed Info.plist
PROJ_VERSION=$(defaults read "$PROJECT_DIR/$INFOPLIST_FILE" CFBundleVersion)

GIT_BRANCH=$(git branch | sed -n -e 's/^\* \(.*\)/\1/p')
GIT_HASH=$(git rev-parse --short HEAD)
PROJ_NEW_VERSION=$PROJ_VERSION.$BUILD_VERSION

echo Version is $PROJ_NEW_VERSION
echo GIT branch is $GIT_BRANCH
echo GIT hash is $GIT_HASH

# Write new version number to parsed Info.plist
defaults write "$PROJ_INFO_PLIST_PATH" CFBundleVersion $PROJ_NEW_VERSION
defaults write "$PROJ_INFO_PLIST_PATH" GitBranch $GIT_BRANCH
defaults write "$PROJ_INFO_PLIST_PATH" GitHash $GIT_HASH