#!/bin/sh

#

# check_iso_read.sh

#

# Author: Leo Baschy

# Some small adaptions made to make it work in libcdio's test suite by

# rocky.

#

# takes zero, one, or two optional parameters in any order

#

# ONE optional parameter:

# an integer number for approximate size of .iso file in megabytes,

# default is 1, for 1 megabyte,

# to test approximately 5 gigabytes pass 5000

#

# OTHER optional parameter:

# the iso-read command you want to test,

# default is iso-read,

# has to be named iso-read to be recognized,

# could be for example src/iso-read

#

# Set environment variable VERBOSE=1 for more verbose output

RM='@RM@'

VERBOSE=${VERBOSE:-0}

# Run $@ capturing output. Show output on an error or if VERBOSE is

# set.

run_cmd() {

    output=`$@ 2>&1`

    if [ $? -ne 0  -o $VERBOSE -ne 0 ]; then

	echo >&2 -- $output

    fi

}

# Remove file $1 if that file exists

rm_if_exists() {

    file=$1

    [ -f $file ] && $RM $file

}

# Remove driectory $1 if that directory exists

rmdir_if_exists() {

    dir=$1

    [ -d $dir ] && $RM -r $dir

}

cleanup() {

    for i in 0 1 2 3 4 5 6 7 8 9 ; do

	rm_if_exists 1Mfile${i}s-read.txt

    done

    for file in exampleIso1M.iso exampleIso1M.iso.tar.gz; do

	rm_if_exists $file

    done

    rmdir_if_exists exampleIso1M.iso.prep

}

# in $1 or $2 accept integer number as total .iso size in megabytes

case "$1" in

    [0-9]* )

        size="$1" ;;

    *)

        case "$2" in

            [0-9]* )

               size="$2" ;;

        *)

          size="1" ;; # default

        esac

        ;;

esac

# in $1 or $2 accept a different location for iso-read,

# e.g. ~/libcdio/src/iso-read

case "$1" in

    iso-read )

        ISO_READ="$1" ;;

    *)

        case "$2" in

        iso-read )

            ISO_READ="$2" ;;

	*)

            ISO_READ="../src/iso-read" ;;

        esac

	;;

esac

if [ ! -x ${ISO_READ} ]; then

    echo "-- $0: No ${ISO_READ}. Skipping."

    exit 77

fi

echo "-- Going to use ${ISO_READ}."

echo "-- " `$ISO_READ --version`

# pick for your system,

# on a Mac mkisofs, otherwise people use newer genisoimage

isomakingcommand="@ISO_MAKING_COMMAND@"

if [ -z "$isomakingcommand" ]

then

    echo "-- $0: Neither mkisofs nor genisoimage found. Skipping."

    exit 77

fi

echo "-- Working with a $size megabyte large .iso file in $datadir ."

isoname="exampleIso"$size"M.iso"

prepdir="prep"

if [ ! -f "$isoname" ]

then

    echo "-- Going to use " `which "$isomakingcommand"` " to prepare $isoname in $isoname.$prepdir ."

    mkdir "$isoname.$prepdir"

    mkdir "$isoname.$prepdir"/mixed

    # a large file with many of the same characters that will compress well

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\060' > "$isoname.$prepdir/mixed/file0l.txt"

    # a small file we will want to iso-read

    echo "content of short text file #0 we are looking for" > "$isoname.$prepdir/mixed/file0s.txt"

    # a few times over now

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\061' > "$isoname.$prepdir/mixed/file1l.txt"

    echo "content of short text file #1 we are looking for" > "$isoname.$prepdir/mixed/fileOneSmall.txt"

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\062' > "$isoname.$prepdir/mixed/file2l.txt"

    echo "content of short text file #2 we are looking for" > "$isoname.$prepdir/mixed/file2small.txt"

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\063' > "$isoname.$prepdir/mixed/file3l.txt"

    echo "content of short text file #3 we are looking for" > "$isoname.$prepdir/mixed/file3ThreeSmall.txt"

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\064' > "$isoname.$prepdir/mixed/file4l.txt"

    echo "content of short text file #4 we are looking for" > "$isoname.$prepdir/mixed/fileFourS.txt"

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\065' > "$isoname.$prepdir/mixed/file5l.txt"

    echo "content of short text file #5 we are looking for" > "$isoname.$prepdir/mixed/file5small.txt"

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\066' > "$isoname.$prepdir/mixed/file6l.txt"

    echo "content of short text file #6 we are looking for" > "$isoname.$prepdir/mixed/file6s.txt"

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\067' > "$isoname.$prepdir/mixed/file7l.txt"

    echo "content of short text file #7 we are looking for" > "$isoname.$prepdir/mixed/fileSevenSmall.txt"

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\068' > "$isoname.$prepdir/mixed/file8l.txt"

    echo "content of short text file #8 we are looking for" > "$isoname.$prepdir/mixed/file8s.txt"

    run_cmd dd if=/dev/zero bs=1024 count=$size"00" | tr '\0' '\069' > "$isoname.$prepdir/mixed/file9l.txt"

    echo "content of short text file #9 we are looking for" > "$isoname.$prepdir/mixed/file9s.txt"

    # a potentially huge .iso file, whatever you wrote above

    run_cmd "$isomakingcommand" -r -J -T -f -V "EXAMPLEISO"$size"M" -o "$isoname" "$isoname.$prepdir"

    # if you want to archive a test file, this compressed one is much smaller,

    # seen 4KB instead of 1MB, seen 5MB instead of 5GB

    v_opt=''

    [ $VERBOSE -ne 0 ] && v_opt='-v'

    tar $v_opt -cf "$isoname.tar" "$isoname"

    gzip $v_opt -9 "$isoname.tar"

else

    echo "-- Using existing $isoname ."

fi

# remind of disk space use

# ls -al

# du -h .

echo "

-- ----------------------------------------

-- Size $size megabyte .iso file read back:

-- ----------------------------------------

"

for i in 0 1 2 3 4 5 6 7 8 9

do

    echo "didn't read file #$i" > $size"Mfile"$i"s-read.txt"

done

#

"$ISO_READ" -i "$isoname" -e "mixed/file0s.txt" -o $size"Mfile0s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/fileOneSmall.txt" -o $size"Mfile1s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/file2small.txt" -o $size"Mfile2s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/file3ThreeSmall.txt" -o $size"Mfile3s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/fileFourS.txt" -o $size"Mfile4s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/file5small.txt" -o $size"Mfile5s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/file6s.txt" -o $size"Mfile6s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/fileSevenSmall.txt" -o $size"Mfile7s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/file8s.txt" -o $size"Mfile8s-read.txt"

"$ISO_READ" -i "$isoname" -e "mixed/file9s.txt" -o $size"Mfile9s-read.txt"

#

anybad=0

for i in 0 1 2 3 4 5 6 7 8 9

do

    readback=`cat $size"Mfile"$i"s-read.txt"`

    if [ "$readback" = "content of short text file #$i we are looking for" ]

    then

        echo "-- file #$i read back OK: $readback"

    else

        anybad=1

        echo "file #$i read DEFECT : $readback"

    fi

done

cleanup

if [ $anybad -eq 0 ]

then

    echo "-- $0: Overall success of $0 :)"

else

    echo "$0: Overall FAILURE of $0 :("

fi

exit $anybad

# if it worked correctly you should see the lines we wrote into the short files:

#

# content of short text file #i we are looking for

#

# IF however defect https://savannah.gnu.org/bugs/?39373 is still

# in effect you might see lines such as:

# 111111111111111111111111111111111111

#

# furthermore, IF however defect https://savannah.gnu.org/bugs/?39354 is still

# in effect you might see lines such as:

#

# iso-read: Could not get ISO-9660 file information out of $isoname for file mixed/file2small.txt.

# iso-read: iso-info may be able to show the contents of $isoname.