versionbump

#!/bin/bash
# Bumps up the version of source files
# Usage:
#   versionbump                # Show current version
#   versionbump xxxx.xx.x.x    # Set version number

bumpedversion=$1
config=.versionrc
format=$(sed -r -n "s/^format: *(.+)\$/\1/ p" $config)
formathuman=$(sed -r -n 's/^formathuman: (.*)$/\1/ p' $config)
currentversion=$(sed -r -n "s/^version: *($format)\$/\1/ p" $config)
files=$(sed -r -n 's/^files: *(([-_./a-zA-Z0-9]+ *)+)/\1/ p' $config)
changes=$(sed -r -n 's/^changesfile: *(([-_./a-zA-Z0-9]+ *)+)/\1/ p' $config)
tagprefix=$(sed -r -n 's/^tagprefix: *(([-_./a-zA-Z0-9]+ *)+)/\1/ p' $config)
changestemplate="/tmp/XXXX-suse-xsl-version"
changes_header="-------------------------------------------------------------------"
changes_user="tomschr@users.noreply.github.com"

if [[ $1 == '' ]]; then
  currentversion=$(sed -r -n 's/^version: *(.+)$/\1/ p' $config)
  echo "Current version number is $currentversion"
  echo "Format: $formathuman"
  echo -n "Format policy: "
  sed -r -n 's/^formatpolicy: (.*)$/\1/ p' $config | sed -r 's/(^|; *)/\n  * /g'
  exit
fi

if [[ $currentversion == '' ]]; then
  echo -n "(aem) Old version number does not adhere to format: $format. Continue anyway? y/[n] "
  read DECISION
  if [[ ! $DECISION == 'y' ]] && [[ ! $DECISION == 'yes' ]]; then
    echo "(meh) Not setting new version number."
    exit
  else
    currentversion=$(sed -r -n 's/^version: *(.+)$/\1/ p' $config)
  fi
fi

if [[ "$1" == '--finalize' ]]; then
  if [[ $(git tag | grep -o "$tagprefix$bumpedversion") ]]; then
    echo "(meh) The tag $tagprefix$bumpedversion already exists. I am confused."
    exit 1
  else
    bumpedversion="$currentversion"
  fi
else
  if [[ ! $(echo $bumpedversion | grep -P "^$format\$") ]]; then
    echo "(meh) New version does not adhere to format: $formathuman"
    echo "Format as regular expression: $format"
    exit
  fi

  echo "Current version number is $currentversion"
  echo -n "Really set new version number $bumpedversion? y/[n] "
  read DECISION
  if [[ ! $DECISION == 'y' ]] && [[ ! $DECISION == 'yes' ]]; then
    echo "(meh) Not setting new version number."
    exit 1
  fi

  for versionfile in $config $files; do
    sed -i -r "s/$currentversion/$bumpedversion/" $versionfile
  done
  echo "Set version number: $currentversion => $bumpedversion"
fi

if [[ $(grep -o "$bumpedversion" $changes) ]]; then
  echo "(yay) Changes file appears to mention version $bumpedversion already."
else
  echo "(aem) Changes file does not appear to mention $bumpedversion yet."
fi
echo -n "Open changes file for editing? [y]/n "
read DECISION

if [[ ! $DECISION == 'n' ]] && [[ ! $DECISION == 'no' ]]; then
  TMPFILE=$(mktemp $changestemplate)
  TMPFILE2=$(mktemp $changestemplate)
  echo -e $changes_header > $TMPFILE
  DATE=$(LANG=C TZ=UTC date '+%A %b %d %T %Z %Y' | awk '{$1=substr($1,1,3); print $0}')
  echo -e "$DATE - $changes_user\n\n" >> $TMPFILE
  ${EDITOR:-vi} $TMPFILE
  cat $TMPFILE $changes > $TMPFILE2 && mv $TMPFILE2 $changes

else
  echo "(kay) Using changes as-is."
fi


echo -n "Commit and tag version $bumpedversion? y/[n] "
read DECISION
if [[ ! $DECISION == 'y' ]] && [[ ! $DECISION == 'yes' ]]; then
  echo "(meh) Not creating commit and tag."
  echo "Rerun this script with --finalize to finish."
  exit
else
  COMMITMESSAGE="Set version to $bumpedversion"
  sed -i '1d' $TMPFILE
  git commit -m "$COMMITMESSAGE" $files $changes $config
  git tag -a "$tagprefix$bumpedversion" -m "$COMMITMESSAGE"
  echo -e "(hey) Do not forget:\n  git push && git push $(git remote | head -1) $tagprefix$bumpedversion"
  rm $TMPFILE 2>/dev/null || true
fi