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|
#!/bin/sh
progname=$0
version=1.1.0
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).
-3, --diff3 Use diff3(1).
-h, --help print this help and exit
-v, --version print version information and exit
Example:
\$ gtkdiff-rcs GnewsAlert.c
( diff with latest )
\$ gtkdiff-rcs -r1.1 GnewsAlert.c
( diff with revision 1.1 )
\$ gtkdiff-rcs -r1.1 -r1.2 GnewsAlert.c
( diff between revisions 1.1 and 1.2 )
\$ gtkdiff-rcs -3 -r1.1 GnewsAlert.c
( diff3 among current, latest and revision 1.1 )
\$ gtkdiff-rcs -3 -r1.1 -r1.2 GnewsAlert.c
( diff3 among current, and revisions 1.1 and 1.2 )
\$ gtkdiff-rcs -r1.1 -r1.2 -r1.3 GnewsAlert.c
( diff3 among revisions 1.1, 1.2 and 1.3 )
"
# Command path
CO=@CO@
RM=@RM@
GTKDIFF=@prefix@/bin/gtkdiff
# Temporary files information
: ${TMPDIR=/tmp}
TMP_SUFFIX=@gtkdiff$$
TMP_REV1_FILE=
TMP_REV2_FILE=
TMP_REV3_FILE=
# variables
rev1=
rev2=
rev3=
use_diff3=0
rm_tmpfiles () {
[ -n "$TMP_REV1_FILE" -a -f $TMP_REV1_FILE ] && $RM -f $TMP_REV1_FILE
[ -n "$TMP_REV2_FILE" -a -f $TMP_REV2_FILE ] && $RM -f $TMP_REV2_FILE
[ -n "$TMP_REV3_FILE" -a -f $TMP_REV3_FILE ] && $RM -f $TMP_REV3_FILE
}
finalize () {
rm_tmpfiles
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; }
[ -z "$rev1" ] && { rev1="$1"; shift; continue; }
[ -z "$rev2" ] && { rev2="$1"; shift; continue; }
[ -z "$rev3" ] && rev3="$1";;
-r*)
[ -z "$rev1" ] && { rev1=`expr $1 : '-r\(.*\)'`; shift; continue; }
[ -z "$rev2" ] && { rev2=`expr $1 : '-r\(.*\)'`; shift; continue; }
[ -z "$rev3" ] && rev3=`expr $1 : '-r\(.*\)'`;;
-3 | --diff3)
use_diff3=1;;
-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 [ ! -x "$GTKDIFF" ]
then
echo "Warning:"
echo "You can't execute $GTKDIFF."
echo "Are you sure you have GtkDiff installed ?"
exit 0
fi
if [ ! -x "$CO" ]
then
echo "Warning:"
echo "You can't execute $CO."
echo "Are you sure you have RCS installed ?"
exit 0
fi
if [ ! -f "$1" ]
then
echo "Warning:"
echo "$1 not found"
exit 0
fi
#
# Create temporary revision files
#
TMP_REV1_FILE=$TMPDIR/`basename ${1}`"("${rev1}")"${TMP_SUFFIX}
TMP_REV2_FILE=$TMPDIR/`basename ${1}`"("${rev2}")"${TMP_SUFFIX}
TMP_REV3_FILE=$TMPDIR/`basename ${1}`"("${rev3}")"${TMP_SUFFIX}
if [ -n "$rev1" ]
then
$CO -p$rev1 $1 > $TMP_REV1_FILE
else
TMP_REV1_FILE=$TMPDIR/`basename ${1}`"("latest")"${TMP_SUFFIX}
$CO -p $1 > $TMP_REV1_FILE
$GTKDIFF $TMP_REV1_FILE $1
rm_tmpfiles
exit 0
fi
if [ -n "$rev2" ]
then
$CO -p$rev2 $1 > $TMP_REV2_FILE
else
if [ $use_diff3 -eq 0 ]; then
$GTKDIFF $TMP_REV1_FILE $1
rm_tmpfiles
exit 0
else
TMP_REV2_FILE=$TMPDIR/`basename ${1}`"("latest")"${TMP_SUFFIX}
$CO -p $1 > $TMP_REV2_FILE
$GTKDIFF $TMP_REV1_FILE $TMP_REV2_FILE $1
rm_tmpfiles
exit 0
fi
fi
if [ -n "$rev3" ]
then
$CO -p$rev3 $1 > $TMP_REV3_FILE
$GTKDIFF $TMP_REV1_FILE $TMP_REV2_FILE $TMP_REV3_FILE
else
if [ $use_diff3 -eq 0 ]; then
$GTKDIFF $TMP_REV1_FILE $TMP_REV2_FILE
else
$GTKDIFF $TMP_REV1_FILE $TMP_REV2_FILE $1
fi
fi
rm_tmpfiles
exit 0
|
