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#!/bin/sh

# This file tries to determine the best method to create a tempfile
# by testing various methods.

# Copyright (c) 2005, Lutz Peter Christoph
# All rights reserved.
#
# 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.
#
# * The name and aliases of Lutz Peter Christoph ("Lupe Christoph",
# "Lutz Christoph") may not 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 COPYRIGHT
# OWNER 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.


testfun () {
TEMP_FILE=`eval $MKTEMP 2>/dev/null`
STATUS=$?
if [ $STATUS = 0 -a -n "$TEMP_FILE" -a -f "$TEMP_FILE" ]; then
rm -f $TEMP_FILE
echo $MKTEMP
exit
else
rm -f $TEMP_FILE
fi
}

# Preferred
MKTEMP='mktemp -p /tmp/ $1'
testfun temp.XXXXXX

# FreeBSD way
MKTEMP="mktemp -t /tmp"
testfun temp.XXXXXX

# Plain mktemp
MKTEMP="mktemp /tmp/$1"
testfun temp.XXXXXX

# No mktemp at all
MKTEMP='rm -rf /tmp/$1.$$ && touch /tmp/$1.$$ && chmod 600 /tmp/$1.$$ && echo /tmp/$1.$$'
testfun temp.XXXXXX

exit 1
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