semver.sh

#!/bin/bash
PROJECT_NAME=todo
SEMVER_FILE=./version.sh

version=0.0.0
if [ -f "$SEMVER_FILE" ]; then
  source $SEMVER_FILE
  version=$SEMVER
fi

# Increment a version string using Semantic Versioning (SemVer) terminology.
# Parse command line options.
while getopts ":Mmp" Option
do
  case $Option in
    M ) major=true;;
    m ) minor=true;;
    p ) patch=true;;
  esac
done

shift $(($OPTIND - 1))

# Build array from version string.
a=( ${version//./ } )

# If version string is missing or has the wrong number of members, show usage message.
if [ ${#a[@]} -ne 3 ]
then
  echo "usage: $(basename $0) [-Mmp] major.minor.patch"
  exit 1
fi

# Increment version numbers as requested.
if [ ! -z $major ]
then
  ((a[0]++))
  a[1]=0
  a[2]=0
fi

if [ ! -z $minor ]
then
  ((a[1]++))
  a[2]=0
fi

if [ ! -z $patch ]
then
  ((a[2]++))
fi

if [ -f "$FILE" ]; then
    echo "$FILE exists."
fi


echo "Deploying $PROJECT_NAME v${a[0]}.${a[1]}.${a[2]}"
echo "#!/bin/bash
SEMVER=${a[0]}.${a[1]}.${a[2]}" > $SEMVER_FILE