bump.sh

#! /bin/bash

ORG_VER=$(git describe --abbrev=0 --tags)

# remove 'v' from start of string
CURR_VER=${ORG_VER//v}
NEW_VER=$CURR_VER

MAJOR_VER=$(echo $CURR_VER | awk '{split($0,a,"."); print a[1]}')
MINOR_VER=$(echo $CURR_VER | awk '{split($0,a,"."); print a[2]}')
FIX_VER=$(echo $CURR_VER | awk '{split($0,a,"."); print a[3]}')

FIX="fix"
MINOR="minor"
MAJOR="major"

update_version(){
  str=$(echo $1 | awk '{print tolower($0)}')

  case $str in
    $MAJOR)
      MAJOR_VER=$(echo "${MAJOR_VER} + 1" | bc)
      ;;
    $MINOR)
      MINOR_VER=$(echo "${MINOR_VER} + 1" | bc)
      ;;
    $FIX)
      FIX_VER=$(echo "${FIX_VER} + 1" | bc)
      ;;
  esac

  NEW_VER="v$MAJOR_VER.$MINOR_VER.$FIX_VER"

  echo "Updating version: $ORG_VER -> $NEW_VER"

  if [ "$#" -gt "1" ]; then
    echo "adding message"
    echo $2
    # $(git tag $NEW_VER -m $2)
  else
    # $(git tag $NEW_VER)
  fi
}

print_help(){
  echo "$package - attempt to capture frames"
  echo " "
  echo "$package [options] application [arguments]"
  echo " "
  echo "options:"
  echo "-h, --help               show brief help"
  echo "-b, --bump=VERSION       specify the version to increase: major | minor | [default] fix"
}

case "$#" in
  "1")
    case "$1" in
          -h|--help)
                  print_help
                  ;;
          -b|--bump)
                  echo "VERSION not specified; using default [fix]."
                  update_version $FIX
                  exit 0
                  ;;
    esac
    ;;
  "2")
    if [ "$1" == "-b" ]; then
      update_version $2
      exit 0
    fi
  ;;
  "3")
    if [ "$1" == "-b" ]; then
      if [ "$3" == "-m" ]; then
        echo "if using the '-m' flag, you must specify a message"
        exit 1
      fi
        update_version $2 $3
        exit 0
    fi
  ;;
  "4")
    if [ "$1" == "-b" ]; then
      if [ "$3" == "-m" ]; then
        update_version $2 $4
        exit 0
      else
        update_version $2
        exit 0
      fi
    fi
  ;;
  *)
    print_help
    exit 1
  ;;
esac