#! /bin/sh

# Copyright (C) 2000-2004 Peter Selinger.
# This file is part of ccrypt. It is free software and it is covered
# by the GNU general public license. See the file COPYING for details.

# Check that potrace works correctly on very large (>4GB) files in
# overwrite mode. Note that this test requires a LOT of disk space.
# Therefore, it is not routinely included in the "make check" target.

# Usage: largefile-check.sh [dir]

if [ -z "$srcdir" ]; then
    srcdir=.
fi

NAME=$0
CCRYPT="../src/ccrypt -f -K testkey"
DIR=${TEMPDIR:-/tmp}

if [ "$1" ]; then
    DIR="$1"
fi

DATA=`mktemp $DIR/largefile-check-XXXXXX`

cleanup () {
    rm -rf "$DATA"
    rm -rf "$DATA".cpt
}

trap cleanup EXIT
trap cleanup SIGINT

action () {
    "$@"
    if [ $? -ne 0 ]; then
	echo $NAME: test failed >& 2
	echo Failed command: $LINE: "$@" >& 2
	cleanup
	exit 1
    fi
}

# keep track of line numbers
alias action="LINE=\$LINENO; action"

echo "Creating large file (>4GB)..."
action dd if=/dev/zero of=$DATA bs=1024 count=4200000 >/dev/null

echo "Encrypting file..."
action $CCRYPT "$DATA"

echo $NAME: test succeeded >&2
cleanup
exit 0