versionbump

#!/bin/bash
# Bumps up the version of doc-kit source files
# Usage:
#   versionbump        # Show current version
#   versionbump 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)

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 "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 [[ ! $(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 -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
fi

for versionfile in $files; do
  line=$(grep -inP '^(/+|/\*|#+|<!--)?[ \t]*project version number[ \t]*(/+|/\*|#+|-->)?' $versionfile | cut -f1 -d ':')
  if [[ $line != '0' ]]; then
    line=$(($line + 1))
    sed -i -r "$line s/$currentversion/$bumpedversion/" $versionfile
  fi
done
sed -i -r "s/$currentversion/$bumpedversion/" $config
echo "Set version number: $currentversion => $bumpedversion"

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
  $EDITOR $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."
  exit
else
  git commit -m "Set version to $bumpedversion" $files $changes $config
  git tag "$bumpedversion"
fi