changeversion

#!/bin/bash

# Change the version of the source code to the supplied value

# Day Suffix Function
DaySuffix() {
  case $(date +%-d) in
    1|21|31) echo "st";;
    2|22)    echo "nd";;
    3|23)    echo "rd";;
    *)       echo "th";;
  esac
}

usage() {
  echo "Usage:  $0 <TARGET> [-c] [-p] [-m] [-i] [-r] [-d] [-s X.Y.Z]"
  echo "        -M	Increase major version number (X.0.0)"
  echo "        -m	Increase minor version number (0.X.0)"
  echo "        -p	Increase patch version number (0.0.X)"
  echo "        -s	Set version explicitly to X.Y.Z"
  echo ""
  echo "TARGET is one of:     code - change version numbering in code, and installer and packaging scripts"
  echo "                   release - change release version value and date in README.md"
  echo ""
  echo "If no options are specified the default behaviour is to print current versions across relevant files."
}

# Check for no args provided
if [ $# == 0 ]
then
  usage
  exit 1
fi

# Get target type and shift to next option
TYPE=$1
shift
if [ "$TYPE" != "code" ] && [ "$TYPE" != "release" ]
then
  echo "Invalid target '${TYPE}' given (must be 'code', 'release'"
  exit 1
fi

# Get current version number from correct target
CURRENT_VERSION=$(grep "VERSION =" gudpy.spec | sed "s/.*\"\(.*\)\"/\1/g")

PARTS=($(echo $CURRENT_VERSION | tr "." " "))
MAJOR=${PARTS[0]}
MINOR=${PARTS[1]}
PATCH=${PARTS[2]}
CHECK="true"
echo "Current major version (${TYPE}) is : ${MAJOR}"
echo "Current minor version (${TYPE}) is : ${MINOR}"
echo "Current patch version (${TYPE}) is : ${PATCH}"

while getopts ":mMps:" opt
do
  case $opt in
    M) echo "Major version number will be increased from $MAJOR to $((MAJOR+1))"
       MAJOR=$((MAJOR+1))
       MINOR=0
       PATCH=0
       CHECK="false"
       ;;
    m) echo "Minor version number will be increased from $MINOR to $((MINOR+1))"
       MINOR=$((MINOR+1))
       PATCH=0
       CHECK="false"
       ;;
    p) echo "Minor version number will be increased from $PATCH to $((PATCH+1))"
       PATCH=$((PATCH+1))
       CHECK="false"
       ;;
    s) MAJOR=$(echo $OPTARG | cut -f1 -d.)
       MINOR=$(echo $OPTARG | cut -f2 -d.)
       PATCH=$(echo $OPTARG | cut -f3 -d.)
       CHECK="false"
       echo "Version will be set explicitly to MAJOR=$MAJOR MINOR=$MINOR PATCH=$PATCH"
       ;;
   \?) usage
       exit 1
       ;;
    *) echo "Error: Extra operands given."
       usage
       exit 1
       ;;
  esac
done


#########################################
# Code / Installer / Packaging Versions #
#########################################

if [ "$TYPE" = "code" ]
then
  # Program (gudpy.spec)
  if [ "$CHECK" = "false" ]
  then
    sed -i -e "s/VERSION = \"[0-9\.]\+\(.*\)\"/VERSION = \"$MAJOR.$MINOR.$PATCH\"\1/g" gudpy.spec
  fi
  echo -n "           gudpy.spec (Program Version) : "
  grep 'VERSION =' gudpy.spec | sed -e 's/VERSION = "\([0-9a-z\.]\+\).*"/\1/g'

fi

#############
# README.md #
#############

if [ "$TYPE" = "release" ]
then
  # README.md
  if [ "$CHECK" = "false" ]
  then
    DAYSUFFIX=$(DaySuffix)
    TODAY=$(date "+%A %-d${DAYSUFFIX} %B %Y")
    sed -i -e "s/Last Release: [0-9\.]*, \(.*\)_/Last Release: $MAJOR.$MINOR.$PATCH, ${TODAY}_/g" README.md
  fi
  echo -n "           README.md (Release Version) : "
  grep 'Last Release:' README.md | sed -e 's/.*Release: \([0-9\.]*\),.*/\1/g'
  echo -n "           README.md    (Release Date) : "
  grep 'Last Release:' README.md | sed -e "s/.*Release: .*, \(.*\)_/\1/g"
fi

exit 0