xcode-git-version.sh

#!/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, add the script's path to a "Run Script" build
# phase for your application target.

set -o errexit
set -o nounset

# First, check for git in $PATH
hash git 2>/dev/null || { echo >&2 "Git required, not installed.  Aborting build number update script."; exit 0; }

# Alternatively, we could use Xcode's copy of the Git binary,
# but old Xcodes don't have this.
#GIT=$(xcrun -find git)

# Run Script build phases that operate on product files of the target that defines them should use the value of this build setting [TARGET_BUILD_DIR]. But Run Script build phases that operate on product files of other targets should use “BUILT_PRODUCTS_DIR” instead.
INFO_PLIST="${TARGET_BUILD_DIR}/${INFOPLIST_PATH}"

# Build version (closest-tag-or-branch "-" commits-since-tag "-" short-hash dirty-flag)
BUILD_VERSION=$(git describe --tags --always --dirty=+)

# Use the latest tag for short version (expected tag format "vn[.n[.n]]")
# or if there are no tags, we make up version 0.0.<commit count>
LATEST_TAG=$(git describe --tags --match 'v*' --abbrev=0 2>/dev/null) || LATEST_TAG="HEAD"
if [ $LATEST_TAG = "HEAD" ]
then COMMIT_COUNT=$(git rev-list --count HEAD)
    LATEST_TAG="0.0.$COMMIT_COUNT"
    COMMIT_COUNT_SINCE_TAG=0
else
    COMMIT_COUNT_SINCE_TAG=$(git rev-list --count ${LATEST_TAG}..)
    LATEST_TAG=${LATEST_TAG##v} # Remove the "v" from the front of the tag
fi
if [ $COMMIT_COUNT_SINCE_TAG = 0 ]; then
    SHORT_VERSION="$LATEST_TAG"
else
    # increment final digit of tag and append "d" + commit-count-since-tag
    # e.g. commit after 1.0 is 1.1d1, commit after 1.0.0 is 1.0.1d1
    # this is the bit that requires /bin/bash
    OLD_IFS=$IFS
    IFS="."
    VERSION_PARTS=($LATEST_TAG)
    LAST_PART=$((${#VERSION_PARTS[@]}-1))
    VERSION_PARTS[$LAST_PART]=$((${VERSION_PARTS[${LAST_PART}]}+1))
    SHORT_VERSION="${VERSION_PARTS[*]}d${COMMIT_COUNT_SINCE_TAG}"
    IFS=$OLD_IFS
fi

# Bundle version (commits-on-master[-until-branch "." commits-on-branch])
# Assumes that two release branches will not diverge from the same commit on master.
if [ $(git rev-parse --abbrev-ref HEAD) = "master" ]; then
    MASTER_COMMIT_COUNT=$(git rev-list --count HEAD)
    BRANCH_COMMIT_COUNT=0
    BUNDLE_VERSION="$MASTER_COMMIT_COUNT"
else
    MASTER_COMMIT_COUNT=$(git rev-list --count $(git rev-list master.. | tail -n 1)^)
    BRANCH_COMMIT_COUNT=$(git rev-list --count master..)
    if [ $BRANCH_COMMIT_COUNT = 0 ]
    then BUNDLE_VERSION="$MASTER_COMMIT_COUNT"
    else BUNDLE_VERSION="${MASTER_COMMIT_COUNT}.${BRANCH_COMMIT_COUNT}"
    fi
fi
    
# For debugging:
echo "BUILD VERSION: $BUILD_VERSION"
echo "LATEST_TAG: $LATEST_TAG"
echo "COMMIT_COUNT_SINCE_TAG: $COMMIT_COUNT_SINCE_TAG"
echo "SHORT VERSION: $SHORT_VERSION"
echo "MASTER_COMMIT_COUNT: $MASTER_COMMIT_COUNT"
echo "BRANCH_COMMIT_COUNT: $BRANCH_COMMIT_COUNT"
echo "BUNDLE_VERSION: $BUNDLE_VERSION"

/usr/libexec/PlistBuddy -c "Add :CFBundleBuildVersion string $BUILD_VERSION" "$INFO_PLIST" 2>/dev/null || /usr/libexec/PlistBuddy -c "Set :CFBundleBuildVersion $BUILD_VERSION" "$INFO_PLIST"
/usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString $SHORT_VERSION" "$INFO_PLIST"
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $BUNDLE_VERSION" "$INFO_PLIST"

I found a solution for the above problem at https://github.com/uranusjr/macdown/blob/master/Tools/utils.sh

if [ $(git rev-list --count master..) = 0 ]; then   # The branch is attached to master. Just count master.
        MASTER_COMMIT_COUNT=$(git rev-list --count HEAD)
    else
        MASTER_COMMIT_COUNT=$(git rev-list --count $(git rev-list master.. | tail -n 1)^)
    fi

has anyone tried this script in an xamarin forms application? I am looking for a solution like this for ios and android (if possible) for an xamarin forms project.

P.S and to clarify this is for a ios project. I am not sure if this for-fills the requirements for the ios build numbers and testflight.

I've been using a variant of this script for years but it stopped working with the xcode 10 new build system. The values created by this script get overwritten by the generic project plist. The solution here is to add the plist file as an input to the run script phase.

Just thought I'd add that while CFBundleShortVersionString and CFBundleVersion are actual keys, there is no such thing as CFBundleBuildVersion. It's not an official key as far as I can tell. A google search returns a measly 3 results. I'm not really sure why it's being set....