Git annotated tag release script

README.md

Git annotated tag release script

Install

cd <where-you-want-to-run-your-script-from>
curl -O https://gist.githubusercontent.com/pietvanzoen/40dd1bb43bcf49223532a4beb941c384/raw/git-release.sh
chmod +x git-release.sh

Run

cd <your-git-repo>
<path-to-script>/git-release.sh

Follow prompts.

git-release.sh

#!/bin/bash

set -e

function main() {
  update_master

  get_latest_tag_version

  get_changelog

  get_new_release_version

  make_release

  echo "Success! Release $new_release created. Run git push --tags to publish"

}

function update_master() {
  git checkout master --quiet
  git pull --quiet
}

function get_latest_tag_version() {
  latest_tag_version="$(git tag --list --sort='-*authordate' 'v*' | head -n 1)"
  read -r -p "Last tag version was $latest_tag_version. Is this correct? " response
  if [[ ! $response =~ ^([yY][eE][sS]|[yY])$ ]]; then
    read -r -p "What tag should we go from? " latest_tag_version
  fi
}

function get_changelog() {
  echo
  changelog="$(git log --pretty="* %ad - %s [%h]" --date=short $latest_tag_version..origin/master)"

  change_count="$(git rev-list --count $latest_tag_version..origin/master)"
  if [[ "$change_count" -lt 1 ]]; then
    echo "No commits since $latest_tag_version"
    exit
  fi

  echo "$change_count commit(s) since $latest_tag_version. These will be included in the new release:"
  echo "$changelog"
}

function get_new_release_version() {
  echo
  read -r -p "What is the version of the new release? (e.g. 'v1.4.6') " new_release

  if [[ ! $new_release =~ ^(v[0-9]+\.[0-9]+\.[0-9]+)$ ]]; then
    echo "Not a valid release version: $new_release"
    exit 1
  fi
}

function make_release() {
  message="$new_release

$changelog"

  git tag -a "$new_release" -m "$message"
}

main