semiver.sh

semiver.sh

#!/bin/bash
# https://engineering.taboola.com/calculating-git-version/
# Maybe we would use https://gist.github.com/OleksandrKucherenko/9fb14f81a29b46886ccd63b774c5959f
# Depends on https://semver.org/spec/v2.0.0.html

branch=$(git rev-parse --abbrev-ref HEAD)
latest=$(git tag -l --merged master --sort='-*authordate' | head -n1)
semver_parts=(${latest//./ })
major=${semver_parts[0]}
minor=${semver_parts[1]}
patch=${semver_parts[2]}

version=""

case $branch in
"master")
  version=${major}.${minor}.$((patch + 1))
  ;;
"feature/*")
  branch_parts=(${latest//./ })
  # echo $branch | grep -Pio "(feature|bug)/\K.+?$"
  count=$(git rev-list HEAD ^${latest} --ancestry-path ${latest} --count)
  version=${major}.${minor}.${patch}-${branch}-${count}
  ;;
*)
  echo >&2 "unsupported branch type"
  exit 1
  ;;
esac

echo "${version}"
exit 0