#!/bin/bash

#

# Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

# Simple tool to diff two jar or zip files. It unpacks the jar/zip files and

# reports if files differs and if files are new or missing.

# Assumes gnu diff.

# There are a few source files that have DOS line endings in the

# jaxp/jaxws source drops, when the sources were added to the repository

# the source files were converted to UNIX line endings.

# For now we ignore these differences.

DIFF_FLAGS="--strip-trailing-cr"

#set -x

if [ $# -lt 2 ] 

then

  echo "Diff two jar/zip files. Return codes: 0 - no diff, 1 - diff, 2 - couldn't perform diff"

  echo "Syntax: $0 old_archive new_archive [old_root new_root]"

  exit 2

fi

if [ ! -f $1 ]

then

  echo $1 does not exist

  exit 2

fi

if [ ! -f $2 ]

then

  echo $2 does not exist

  exit 2

fi

IGNORES="cat"

OLD=$(cd $(dirname $1) && pwd)/$(basename $1)

NEW=$(cd $(dirname $2) && pwd)/$(basename $2)

if [ $# -gt 3 ]

then

    ROOT1=$(cd $3 && pwd)

    ROOT2=$(cd $4 && pwd)

    OLD_NAME=$(echo $OLD | sed "s|$ROOT1/||")

    NEW_NAME=$(echo $NEW | sed "s|$ROOT2/||")

    if [ $# == 5 ]; then IGNORES="$5"; fi

else

    ROOT1=$(dirname $OLD)/

    ROOT2=$(dirname $NEW)/

    OLD_NAME=$OLD

    NEW_NAME=$NEW

    if [ $# == 3 ]; then IGNORES="$3"; fi

fi

if [ "`uname`" == "SunOS" ]; then

    if [ -f "`which gdiff`" ]; then

        DIFF=gdiff

    else

        DIFF=diff

    fi

else

    DIFF=diff

fi

OLD_SUFFIX="${OLD##*.}"

NEW_SUFFIX="${NEW##*.}"

if [ "$OLD_SUFFIX" != "$NEW_SUFFIX" ]; then

    echo The files do not have the same suffix type!

    exit 2

fi

if [ "$OLD_SUFFIX" != "zip" ] && [ "$OLD_SUFFIX" != "jar" ] && [ "$OLD_SUFFIX" != "sym" ]; then

    echo The files have to be zip, jar or sym! They are $OLD_SUFFIX

    exit 2

fi

UNARCHIVE="unzip -q"

TYPE="$OLD_SUFFIX"

if cmp $OLD $NEW > /dev/null

then

    # The files were bytewise identical.

    exit 0

fi

# Not quite identical, the might still contain the same data.

# Unpack the jar/zip files in temp dirs

if test "x$COMPARE_ROOT" == "x"; then

    COMPARE_ROOT=/tmp/compare_root.$$

    REMOVE_COMPARE_ROOT=true

fi

OLD_TEMPDIR=$COMPARE_ROOT/$OLD_NAME.old

NEW_TEMPDIR=$COMPARE_ROOT/$NEW_NAME.new

mkdir -p $OLD_TEMPDIR

mkdir -p $NEW_TEMPDIR

(cd $OLD_TEMPDIR && rm -rf * ; $UNARCHIVE $OLD)

(cd $NEW_TEMPDIR && rm -rf * ; $UNARCHIVE $NEW)

ONLY1=$(LANG=C $DIFF -rq $OLD_TEMPDIR $NEW_TEMPDIR | grep "^Only in $OLD_TEMPDIR")

if [ -n "$ONLY1" ]; then

    echo "        Only the OLD $OLD_NAME contains:"

    LANG=C $DIFF -rq $DIFF_FLAGS $OLD_TEMPDIR $NEW_TEMPDIR | grep "^Only in $OLD_TEMPDIR" \

        | sed "s|Only in $OLD_TEMPDIR|            |"g | sed 's|: |/|g'

fi

ONLY2=$(LANG=C $DIFF -rq $OLD_TEMPDIR $NEW_TEMPDIR | grep "^Only in $NEW_TEMPDIR")

if [ -n "$ONLY2" ]; then

    echo "        Only the NEW $NEW_NAME contains:"

    LANG=C $DIFF -rq $DIFF_FLAGS $OLD_TEMPDIR $NEW_TEMPDIR | grep "^Only in $NEW_TEMPDIR" \

        | sed "s|Only in $NEW_TEMPDIR|            |"g | sed 's|: |/|g'

fi

DIFFTEXT="/bin/bash `dirname $0`/difftext.sh"

LANG=C $DIFF -rq $DIFF_FLAGS $OLD_TEMPDIR $NEW_TEMPDIR | grep differ | cut -f 2,4 -d ' ' | \

   awk "{ print \"$DIFFTEXT \"\$1\" \"\$2 }" > $COMPARE_ROOT/diffing

/bin/bash $COMPARE_ROOT/diffing > $COMPARE_ROOT/diffs

if [ -s "$COMPARE_ROOT/diffs" ]; then

   echo "        Differing files in $OLD_NAME"

   cat $COMPARE_ROOT/diffs | grep differ | $IGNORES | cut -f 2 -d ' ' | \

          sed "s|$OLD_TEMPDIR|            |g"

fi

# Clean up

if [ "x$REMOVE_COMPARE_ROOT" == xtrue ]; then

    rm -rf $REMOVE_COMPARE_ROOT

fi

exit 1