#!/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.

#

# MANUAL

#

# ./common/bin/compareimages.sh old_jdk_image new_jdk_image

#

# Compare the directory structure.

# Compare the filenames in the directories.

# Compare the contents of the zip archives

# Compare the contents of the jar archives

# Compare the native libraries

# Compare the native executables

# Compare the remaining files

#

# ./common/bin/compareimages.sh old_jdk_image new_jdk_image [zips jars libs execs other]

#

# Compare only the selected subset of the images.

#

# ./common/bin/compareimages.sh old_jdk_image new_jdk_image CodePointIM.jar

#

# Compare only the CodePointIM.jar file

# Can be used to compare zips, libraries and executables.

#

if [ "x$1" = "x-h" ] || [ "x$1" = "x--help" ] || [ "x$1" == "x" ]; then

    echo "./common/bin/compareimages.sh old_jdk_image new_jdk_image"

    echo ""

    echo "Compare the directory structure."

    echo "Compare the filenames in the directories."

    echo "Compare the contents of the zip archives"

    echo "Compare the contents of the jar archives"

    echo "Compare the native libraries"

    echo "Compare the native executables"

    echo "Compare the remaining files"

    echo ""

    echo "./common/bin/compareimages.sh old_jdk_image new_jdk_image [zips jars libs execs other]"

    echo ""

    echo "Compare only the selected subset of the images."

    echo ""

    echo "./common/bin/compareimages.sh old_jdk_image new_jdk_image CodePointIM.jar"

    echo ""

    echo "Compare only the CodePointIM.jar file"

    echo "Can be used to compare zips, libraries and executables."

    exit 10

fi

OLD="$1"

NEW="$2"

CMD="$3"

DIFF_RESULT=0

CMP_ZIPS=false

CMP_JARS=false

CMP_LIBS=false

CMP_EXECS=false

CMP_OTHER=false

FILTER="cat"

if [ -n "$CMD" ]; then

  case "$CMD" in

    zips)

          CMP_ZIPS=true

      ;;

    jars)

          CMP_JARS=true

      ;;

    libs)

          CMP_LIBS=true

      ;;

    execs)

          CMP_EXECS=true

      ;;

    other)

          CMP_OTHER=true

      ;;

    *)

          CMP_ZIPS=true

          CMP_JARS=true

          CMP_LIBS=true

          CMP_EXECS=true

          CMP_OTHER=true

          FILTER="grep $3"

      ;;

  esac

else

    CMP_ZIPS=true

    CMP_JARS=true

    CMP_LIBS=true

    CMP_EXECS=true

    CMP_OTHER=true

fi

DIFFJARZIP=`dirname $0`/diffjarzip.sh

DIFFLIB=`dirname $0`/difflib.sh

DIFFEXEC=`dirname $0`/diffexec.sh

export COMPARE_ROOT=/tmp/cimages

mkdir -p $COMPARE_ROOT

# Load the correct exception list.

case "`uname -s`" in

    Linux)

        . `dirname $0`/exception_list_linux

        ;;

esac

echo

echo Comparing $OLD to $NEW

echo

(cd $OLD && find . -type d | sort > $COMPARE_ROOT/from_dirs)

(cd $NEW && find . -type d | sort > $COMPARE_ROOT/to_dirs)

echo -n Directory structure...

if diff $COMPARE_ROOT/from_dirs $COMPARE_ROOT/to_dirs > /dev/null; then

    echo Identical!

else

    echo Differences found.

    DIFF_RESULT=1

    # Differences in directories found.

    ONLY_OLD=$(diff $COMPARE_ROOT/from_dirs $COMPARE_ROOT/to_dirs | grep '<')

    if [ "$ONLY_OLD" ]; then

        echo Only in $OLD

        echo $ONLY_OLD | sed 's|< ./|\t|g' | sed 's/ /\n/g'

    fi

    # Differences in directories found.

    ONLY_NEW=$(diff $COMPARE_ROOT/from_dirs $COMPARE_ROOT/to_dirs | grep '>')

    if [ "$ONLY_NEW" ]; then

        echo Only in $NEW

        echo $ONLY_NEW | sed 's|> ./|\t|g' | sed 's/ /\n/g'

    fi

fi

(cd $OLD && find . -type f | sort > $COMPARE_ROOT/from_files)

(cd $NEW && find . -type f | sort > $COMPARE_ROOT/to_files)

echo -n File names...

if diff $COMPARE_ROOT/from_files $COMPARE_ROOT/to_files > /dev/null; then

    echo Identical!

else

    echo Differences found.

    DIFF_RESULT=1

    # Differences in directories found.

    ONLY_OLD=$(diff $COMPARE_ROOT/from_files $COMPARE_ROOT/to_files | grep '<')

    if [ "$ONLY_OLD" ]; then

        echo Only in $OLD

        echo $ONLY_OLD | sed 's|< ./|\t|g' | sed 's/ /\n/g'

    fi

    # Differences in directories found.

    ONLY_NEW=$(diff $COMPARE_ROOT/from_files $COMPARE_ROOT/to_files | grep '>')

    if [ "$ONLY_NEW" ]; then

        echo Only in $NEW

        echo $ONLY_NEW | sed 's|> ./|\t|g' | sed 's/ /\n/g'

    fi

fi

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

    ZIPS=$(cd $OLD && find . -type f -name "*.zip" | sort | $FILTER)

    if [ -n "$ZIPS" ]; then

        echo Zip files...

        for f in $ZIPS

        do

            $DIFFJARZIP $OLD/$f $NEW/$f $OLD $NEW 

            if [ "$?" != "0" ]; then

                DIFF_RESULT=1

            fi

        done

   fi        

fi    

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

    JARS=$(cd $OLD && find . -type f -name "*.jar" | sort | $FILTER)

    if [ -n "$JARS" ]; then

        echo Jar files...

        for f in $JARS

        do

            DIFFJAR_OUTPUT=`$DIFFJARZIP $OLD/$f $NEW/$f $OLD $NEW`

            DIFFJAR_RESULT=$?

            if [ "$DIFFJAR_RESULT" != "0" ]; then

                for diff in $LIST_DIFF_JAR; do

                    DIFFJAR_OUTPUT=`echo "$DIFFJAR_OUTPUT" | grep -v "$diff"`

                done

                if [ "`echo "$DIFFJAR_OUTPUT" | grep -v "Differing files in"`" != "" ]; then

                    DIFF_RESULT=1

                    echo "$DIFFJAR_OUTPUT"

                fi

            fi

        done

    fi

fi

if [ "x$FILTER" != "xcat" ]; then

    VIEW=view

else

    VIEW=

fi

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

    LIBS=$(cd $OLD && find . -name 'lib*.so' -o -name '*.dylib' -o -name '*.dll' | sort | $FILTER)

    if [ -n "$LIBS" ]; then

        echo Libraries...

        for f in $LIBS

        do

            DIFFLIB_OUTPUT=`$DIFFLIB $OLD/$f $NEW/$f $OLD $NEW $VIEW`

            DIFFLIB_RESULT=$?

            if [ "$DIFFLIB_RESULT" = "0" ]; then

                :

                #echo "OK: $DIFFLIB_OUTPUT"

            elif [ "$DIFFLIB_RESULT" = "2" ] && [[ "$LIST_DIFF_SIZE $LIST_DIFF_BYTE" == *"${f:2}"* ]]; then

                :

                #echo "OK: $DIFFLIB_OUTPUT"

            elif [ "$DIFFLIB_RESULT" = "1" ] && [[ "$LIST_DIFF_BYTE" == *"${f:2}"* ]]; then

                :

                #echo "OK: $DIFFLIB_OUTPUT"

            else

                echo "$DIFFLIB_OUTPUT"

                DIFF_RESULT=1

            fi

        done

    fi

fi

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

    if [ $OSTYPE == "cygwin" ]; then

        EXECS=$(cd $OLD && find . -type f -name '*.exe' | sort | $FILTER)

    else

        EXECS=$(cd $OLD && find . -type f -perm -100 \! \( -name '*.so' -o -name '*.dylib' -o -name '*.dll' \) | sort | $FILTER)

    fi

    if [ -n "$EXECS" ]; then

        echo Executables...

        for f in $EXECS

        do

            DIFFEXEC_OUTPUT=`$DIFFEXEC $OLD/$f $NEW/$f $OLD $NEW $VIEW`

            DIFFEXEC_RESULT=$?

            if [ "$DIFFEXEC_RESULT" = "0" ]; then

                :

                #echo "OK: $DIFFEXEC_OUTPUT"

            elif [ "$DIFFEXEC_RESULT" = "2" ] && [[ "$LIST_DIFF_SIZE $LIST_DIFF_BYTE" == *"${f:2}"* ]]; then

                :

                #echo "OK: $DIFFEXEC_OUTPUT"

            elif [ "$DIFFEXEC_RESULT" = "1" ] && [[ "$LIST_DIFF_BYTE" == *"${f:2}"* ]]; then

                :

                #echo "OK: $DIFFEXEC_OUTPUT"

            else

                echo "$DIFFEXEC_OUTPUT"

                DIFF_RESULT=1

            fi

        done

    fi

fi

exit $DIFF_RESULT