git-rev

git-rev

#!/bin/bash
set -euE

# Similar as `npm version`, bump version by git tags or custom version file
#
# by @allex_wang <https://iallex.com> | MIT
#
# Usage:
#
#  git-rev
#   -r, --release <patch | minor | major | from-git>
#   --bump-file <*.json, .version> bump file for retrieve reference version
#
# GistID: 91ea3983be9ef1aa64bf00b246df0b0b
# GistURL: https://gist.github.com/allex/91ea3983be9ef1aa64bf00b246df0b0b

PROG=$(basename "$0")
SH_DIR="$(cd -P -- "$(dirname -- "$(readlink "$0")")" && pwd -P)"

bump_file=""
bump_git=false
with_sha1=false
newversion="patch"

args=( )
while [ $# -gt 0 ]; do
  case "$1" in
    -r | --release)
      # patch, minor, major
      newversion=${2:-patch}
      shift
      ;;
    --bump-git)
      bump_git=true
      ;;
    --bump-file)
      bump_file=$2
      shift
      ;;
    --with-sha1)
      with_sha1=true
      ;;
    -h | --help)
      cat <<-EOF
Usage:
$PROG -r [<newversion> | major | minor | patch | from-git]
EOF
      ;;
    -*)
      ;;
    *)
      args+=("$1")
      ;;
  esac
  shift
done

[ ${#args[@]} -gt 0 ] && eval set -- "${args[@]}"

# check $1 greater than $2
is_gt_ver () {
  printf '%s\n%s\n' "$2" "$1" | sort -V -C
}

get_newversion () {
  newversion="$1"
  if [[ "$newversion" =~ ^[0-9]+(.[0-9]+)*.[0-9x]+ ]]; then
    echo "$newversion"
    return
  fi

  if ! ([ "$newversion" = "from-git" ] || $bump_git) && [ -f "${bump_file}" ]; then
    if [ "${bump_file##*.}" = "json" ]; then
      version=$(awk -F'"' '/"version": ".+"/{print $4;exit;}' "$bump_file") || exit $?
    else
      version=$(head -n 1 "$bump_file" | cut -d " " -f 1) || exit $?
    fi
  else
    version=$(git describe --tags HEAD 2>/dev/null | awk '{sub(/-[0-9]+-g.{7,}/,"");print}') || exit $?
  fi

  echo "${version:-0.0.0}" | awk -vflg="$newversion" '{
    if (match($0,/\.[0-9]+$/)) {
      l = split($0, arr, /\./);
      if (l>=3) {
        n=l;
        dic["patch"]=0;
        dic["minor"]=1;
        dic["major"]=2;
        n=l-dic[flg];
        n=n<0?l:n;
        for (i=1;i<=l;i++) {
          if (i==n) arr[i]+=1; else if (i>n) arr[i]=0;
          result=i==1?arr[i]:result"."arr[i];
        }
        print result;
        exit;
      }
    }
    print $0;
  }'
}

tag=$(get_newversion "$newversion")

if $with_sha1; then
  ref=$(git rev-parse "${1:-HEAD}")
  sha1=$(git log -1 --pretty="%h" "$ref") # short sha1
  tag=$tag-$sha1
fi

echo "$tag"