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|
#!/bin/sh
progname=$0
version=1.0.0
usage="\
Usage: $progname file
A simple shell script launches gtkdiff(1) for RCS(1) files.
This intends to be compatible with rcsdiff(1).
-r N, --revision N specifies revision numbers.
space between -r and N can be omitted.
The meaning follows rcsdiff(1).
-h, --help print this help and exit
-v, --version print version information and exit"
# Command path
CO=@CO@
RM=@RM@
TR=@TR@
GTKDIFF=@prefix@/bin/gtkdiff
# Temporary files information
TMP_SUFFIX=@gtkdiff$$
REV1=
REV2=
TMP_REV1_FILE=
TMP_REV2_FILE=
finalize () {
[ -n "$TMP_REV1_FILE" ] && [ -f $TMP_REV1_FILE ] && $RM -f $TMP_REV1_FILE
[ -n "$TMP_REV2_FILE" ] && [ -f $TMP_REV2_FILE ] && $RM -f $TMP_REV2_FILE
exit 1
}
trap finalize INT QUIT HUP TERM
#
# Option processing
#
while [ "$1" != "" ]
do
case "$1" in
-r | --revision)
shift
test $# -eq 0 && { echo "$usage"; exit 0; }
[ -n "$REV1" ] && REV2="$1"
[ -z "$REV1" ] && REV1="$1" ;;
-r*)
[ -n "$REV1" ] && REV2=`echo $1|$TR -d "\-r"`
[ -z "$REV1" ] && REV1=`echo $1|$TR -d "\-r"` ;;
-h | --help)
echo "$usage"; exit 0;;
-v | --version | --v*)
echo "$progname $version"; exit 0;;
--) # Stop option processing.
shift; break ;;
*)
break ;;
esac
shift
done
if [ -z "$1" ]
then
echo "$usage"
exit 1
fi
#
# Check necessary files
#
if [ ! -f "$1" ]
then
echo "Warning:"
echo "$1 not found"
exit 0
fi
if [ ! -x "$CO" ]
then
echo "Warning:"
echo "You can't execute $CO."
exit 0
fi
if [ ! -x "$GTKDIFF" ]
then
echo "Warning:"
echo "You can't execute $GTKDIFF."
exit 0
fi
#
# Create temporary revision files
#
if [ -n "$REV1" ]
then
TMP_REV1_FILE=/tmp/${1}"("${REV1}")"${TMP_SUFFIX}
$CO -p$REV1 $1 > $TMP_REV1_FILE
else
TMP_REV1_FILE=/tmp/${1}"("latest")"${TMP_SUFFIX}
$CO -p $1 > $TMP_REV1_FILE
fi
if [ -n "$REV2" ]
then
TMP_REV2_FILE=/tmp/${1}"("${REV2}")"${TMP_SUFFIX}
$CO -p$REV2 $1 > $TMP_REV2_FILE
$GTKDIFF $TMP_REV1_FILE $TMP_REV2_FILE
else
$GTKDIFF $TMP_REV1_FILE $1
fi
finalize
exit 0
|
