mxmoduleclean

mxmoduleclean

#!/bin/bash
#
# delete *.Required* marker files belonging to a Mendix module and delete their
# *.jar files unused by other modules
#
# Usage:
#   cd userlib
#   # delete module:
#   mxmoduleclean MODULE
#   # delete everything except MODULE 
#   mxmoduleclean -MODULE
#
#   # delete everything except MODULE in the provided .mpk file 
#   MXMODULECLEANMPK=../some.mpk mxmoduleclean -MODULE
#
set -e

if [ ! -z "$MXMODULECLEANMPK" ]; then
  # thankfully realpath is part of git bash  
  MXMODULECLEANMPK=$(realpath "$MXMODULECLEANMPK")
  echo "working on the .mpk file: $MXMODULECLEANMPK"
  unzipdir=$(mktemp -d)

  # unzip may expect Windows path so we have to copy :(
  cp -v "$MXMODULECLEANMPK" "$unzipdir/copy.mpk"
  echo "unzipping to: $unzipdir"
  cd "$unzipdir"
  >/dev/null unzip copy.mpk

  cd userlib
fi

# expand non-matching pattern to nothing
shopt -s nullglob dotglob

s=${1:?}
module=${s#-}


removedfiles=()

fn_rm() {
  removedfiles+=("userlib/${1:?}")
  rm -v -f "${1:?}"
}

if [ x"$s" != x"$module" ]; then
  negate=x

  declare -A matchedfiles=()
  fn_onmatch() {
    matchedfiles["${1:?}"]=x
  }

else
  negate=

  fn_onmatch() {
    fn_rm "${1:?}"
  }

fi


# ex: CommunityCommons.migration
fn_onmatch "${module:?}".migration

# iterate the markers matching by module name
# some legacy markers end with ".Required", not ".RequiredLib":
# - jaxb-runtime-2.3.2.jar.SAML20-module.Required
for r in *."${module:?}".Required*; do
  # guess the jar name by removing the suffix
  # Some legacy markers don't have the ".jar" part though:
  # - commons-codec-1.15.JWT.RequiredLib
  # - opencsv-4.1.OQLModule.RequiredLib
  j=${r%.*.*}

  # guess the base name by removing the optional ".jar" suffix
  b=${j%.jar}
  # make sure it ends with ".jar"
  j=$b.jar

  # no delete by default
  nodel=n;

  # iterate the other markers of the current library 
  for y in "$b".*.Required*; do
    if [ r"$r" != r"$y" ]; then
      if [ ! "$negate" ]; then
        echo "not deleting the jar because other modules depend on it: $y"
        nodel=y;
        break;
      fi
    fi;
  done;
  if [ $nodel = n ]; then
    if [ -e "$j" ]; then
      fn_onmatch "$j"
    fi
    if [ -e "$b" ]; then
      fn_onmatch "$b"
    fi
  fi;
  fn_onmatch "$r";
done

# Example:
# - guava-32.0.1-JWT.RequiredLib
for r in *-"${module:?}".Required*; do
  echo "Warning: ignoring non-standard marker file: $r"
done

if [ "$negate" ]; then
  for r in *; do
    if [ -z "${matchedfiles["$r"]}" ]; then
      fn_rm "$r"
    else
      echo "keeping: $r"
    fi
  done
fi

if [ ! -z "$MXMODULECLEANMPK" ]; then
  cd ..
  if [ 0 != "${#removedfiles[@]}" ]; then
    echo "updating zip..."
    zip -d copy.mpk "${removedfiles[@]}"
    cp -v "$unzipdir/copy.mpk" "$MXMODULECLEANMPK"
  else
    echo "Nothing to delete in zip"
  fi

  cd "$unzipdir"/..
  rm -rf "$unzipdir"
fi