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#! /bin/sh
# Copyright (C) 2000-2018 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.
# provide (dumb) replacements for missing functions
# first, because the "which" command on Solaris is totally useless,
# we need to implement our own. This code is adapted from autoconf.
my_which () {
if test "$#" -ne 1; then
echo "my_which: wrong number of arguments" >&2
return 255
fi
cmd=$1
IFS="${IFS= }"; save_ifs="$IFS"; IFS=":"
path="$PATH"
for dir in $path; do
test -z "$dir" && dir=.
if test -f "$dir/$cmd"; then
echo "$dir/$cmd"
IFS="$save_ifs"
return 0
fi
done
IFS="$save_ifs"
return 1
}
# "mktemp" replacement: note that this creates the same filename each time.
# Thus, when creating more than one tempfile, must give different templates.
# find a directory to use for temporary files.
case `uname -s | tr 'A-Z' 'a-z'` in
os/2 )
# in OS/2, shell redirection "< /tmp/xyz" is broken
TMPDIR="."
;;
* )
TMPDIR="${TEMPDIR:-/tmp}"
;;
esac
# Note: we no longer use "which" to check whether mktemp is available;
# instead, we just try to run it. According to POSIX, /bin/sh must
# return 127 if a command is missing, but not all shells are
# compliant. We therefore check the returned filename. mktemp is
# supposed to create the file, but if it doesn't, we err on the side
# of caution.
FILE=`mktemp "$TMPDIR/ccrypt-common-1.XXXXXX" 2>/dev/null`
if test $? = 127 || test ! -f "$FILE"; then
echo "Warning: mktemp is missing or not working. Using a dummy replacement." >&2
mktemp () {
echo "$1" | sed -e "s/XXXXXX/$$/"
}
else
rm -f "$FILE"
fi
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