#!/bin/sh

## Copyright (C) 2003 Commonwealth Scientific and Industrial Research

## Organisation (CSIRO) Australia

##

## Redistribution and use in source and binary forms, with or without

## modification, are permitted provided that the following conditions

## are met:

##

## - Redistributions of source code must retain the above copyright

## notice, this list of conditions and the following disclaimer.

##

## - Redistributions in binary form must reproduce the above copyright

## notice, this list of conditions and the following disclaimer in the

## documentation and/or other materials provided with the distribution.

##

## - Neither the name of CSIRO Australia nor the names of its

## contributors may be used to endorse or promote products derived from

## this software without specific prior written permission.

##

## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

## ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

## PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR

## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

## EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

## PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

## PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

## LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

## NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

## SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

version () {

  echo >&2 "oggz-diff version "1.1.1

  exit 1

}

usage () {

  echo >&2 "oggz-diff, diff oggz-dumps of two Ogg files."

  echo >&2

  echo >&2 "Usage: oggz-diff [options] [OGGZDUMP_OPTIONS] [DIFF_OPTIONS] file1.ogg file2.ogg"

  echo >&2

  echo >&2 "options: [--verbose] [-v | --version] [-h | --help]"

  echo >&2

  echo >&2 "Supported oggz-dump and diff options:"

  echo >&2

  echo >&2 "OGGZDUMP_OPTIONS: [-b | --binary] [-x | --hexadecimal]"

  echo >&2 "    [-O | --hide-offset] [-S | --hide-serialno] [-G | --hide-granulepos]"

  echo >&2 "    [-P | --hide-packetno] [-s serialno | --serialno serialno]"

  echo >&2 "    [-c content-type | --content-type content-type]"

  echo >&2

  echo >&2 "DIFF_OPTIONS: [-q | --brief] [-C NUM | --context[=NUM]]"

  echo >&2 "     [-u | -U NUM | --unified[=NUM]] [-e | -ed] [--normal] [--rcs]"

  echo >&2 "     [-y | --side-by-side] [-l | --paginate]"

  echo >&2

  exit 1

}

GETOPTEST=`getopt --version`

case $GETOPTEST in

getopt*) # GNU getopt

  GETOPTARGS="-l verbose -l version -l brief -l context:: -l unified:: -l ed -l normal -l rcs -l side-by-side -l paginate -l binary -l hexadecimal -l serialno: -l content-type: -l hide-offset -l hide-serialno -l hide-granulepos -l hide-packetno -l help -- +qC:uU:eylbxs:c:OSGPhv"

  QARGS="--verbose --version --brief --context --unified --ed --normal --rcs --side-by-side --paginate --binary --hexadecimal --serialno --content-type --hide-offset --hide-serialno --hide-granulepos --hide-packetno --help -q -C -u -U -e -y -l -b -x -s -c -O -S -G -P -h -v"

  ;;

*) # POSIX getopt ?

  GETOPTARGS="qC:uU:eylbxs:c:OSGPhv"

  QARGS="-q -C -u -U -e -y -l -b -x -s -c -O -S -G -P -h -v"

  ;;

esac

# First check for -? option

if test "X$1" = "X-?"; then

  exit 0

fi

TEMP=`getopt $GETOPTARGS "$@"`

if test "$?" != "0"; then

  usage

fi

eval set -- "$TEMP"

DIFFOPTS="-w" # -w, --ignore-all-space

DUMPOPTS=""

VERBOSE=""

while test "X$1" != "X--"; do

  case "$1" in

    -q|--brief)

      DIFFOPTS=$DIFFOPTS" -q"

      ;;

    -C)

      shift

      DIFFOPTS=$DIFFOPTS" -C $1"

      ;;

    --context)

      shift

      if test "x$1" = "x"; then

        DIFFOPTS=$DIFFOPTS" --context"

      else

        DIFFOPTS=$DIFFOPTS" --context=$1"

      fi

      ;;

    -u)

      DIFFOPTS=$DIFFOPTS" -u"

      ;;

    -U)

      shift

      DIFFOPTS=$DIFFOPTS" -U $1"

      ;;

    --unified)

      shift

      if test "x$1" = "x"; then

        DIFFOPTS=$DIFFOPTS" --unified"

      else

        DIFFOPTS=$DIFFOPTS" --unified=$1"

      fi

      ;;

    -e|--ed)

      DIFFOPTS=$DIFFOPTS" -e"

      ;;

    --normal)

      DIFFOPTS=$DIFFOPTS" --normal"

      ;;

    --rcs)

      DIFFOPTS=$DIFFOPTS" --rcs"

      ;;

    -y|--side-by-side)

      DIFFOPTS=$DIFFOPTS" -y"

      ;;

    -l|--paginate)

      DIFFOPTS=$DIFFOPTS" -l"

      ;;

    -b|--binary)

      DUMPOPTS=$DUMPOPTS" -b"

      ;;

    -x|--hexadecimal)

      DUMPOPTS=$DUMPOPTS" -x"

      ;;

    -s|--serialno)

      shift

      DUMPOPTS=$DUMPOPTS" -s $1"

      ;;

    -c)

      shift

      DUMPOPTS=$DUMPOPTS" -c $1"

      ;;

    -O|--hide-offset)

      DUMPOPTS=$DUMPOPTS" -O"

      ;;

    -S|--hide-serialno)

      DUMPOPTS=$DUMPOPTS" -S"

      ;;

    -G|--hide-granulepos)

      DUMPOPTS=$DUMPOPTS" -G"

      ;;

    -P|--hide-packetno)

      DUMPOPTS=$DUMPOPTS" -P"

      ;;

    --verbose)

      VERBOSE="y"

      ;;

    -v|--version)

      version

      ;;

    -h|--help)

      usage

      ;;

  esac

  shift

done

# Check that all options parsed ok

if test "x$1" != "x--"; then

  usage

fi

shift #get rid of the '--'

if test "x$1" = "x"; then

  usage

fi

if test "x$2" = "x"; then

  usage

fi

if test "x$VERBOSE" != "x"; then

  echo >&2 "OGGZDUMP_OPTIONS: " $DUMPOPTS

  echo >&2 "DIFF_OPTIONS: " $DIFFOPTS

fi

FIFO1="${TMPDIR:-/tmp}/`basename $1`.dump-1-$$"

FIFO2="${TMPDIR:-/tmp}/`basename $2`.dump-2-$$"

exec 5>$FIFO1

exec 6>$FIFO2

oggz-dump $DUMPOPTS $1 >&5

if test "$?" != "0"; then

  exit 1

fi

oggz-dump $DUMPOPTS $2 >&6

if test "$?" != "0"; then

  exit 1

fi

diff $DIFFOPTS $FIFO1 $FIFO2

ret=$?

rm $FIFO1 $FIFO2

exit $ret