#!/bin/rc
#
# command: /bin/boddle /usr/forsyth/cd/9/pc/devvga.c /sys/src/9/pc/devvga.c
# srcdir: /usr/forsyth/cd/9/pc
# version: 811554507
# date: Wed Sep 20 00:48:27 BST 1995
#
myname=$0
doextract=no

fn usage{
	echo $myname: usage: $myname '[-X] [src-directory]' >[1=2]
	exit usage
}

fn sigint{
	rm -rf 811554507
	exit interrupt
}

while(~ $1 -*){
	switch($1){
	case -X
		doextract=yes
	case -*
		usage
	}
	shift
}

switch($#*){
case 0
	srcdir=/usr/forsyth/cd/9/pc
case 1
	srcdir=$1
case *
	usage
}

if(! ~ $doextract yes){
	echo This shell file contains a bundle of diffs representing changes
	echo to original source files in the Plan 9 distribution. It will run
	echo against the files in
	echo ' ' $srcdir
	echo '(unless overridden by the optional source directory argument)'
	echo and create a directory 811554507 containing the updated files.
	echo It will NOT automatically update the original files.
	echo
	echo Invoke with argument -X to perform the actual extraction.
	exit 0
}

rm -rf 811554507
mkdir 811554507

target=811554507/devvga.c
echo -n '811554507/devvga.c: '
if(! test -f $srcdir/devvga.c || ! test -r $srcdir/devvga.c){
	echo $srcdir/devvga.c unreadable
	exit unreadable
}
sum=`{sum < $srcdir/devvga.c}
if(! ~ ea7d916f23360  $sum(1)^$sum(2)){
	echo $srcdir/devvga.c is not the original distribution file
	exit original
}
cp $srcdir/devvga.c 811554507/devvga.c
ed 811554507/devvga.c >/dev/null >[2=1] <<'//GO.SYSIN DD VADIM devvga.c'
603d
599a
	if(conf.monitor) {
		/* set gscreen's dimensions to their eventual values, for bitreset */
		gscreen.r.max.x = x = 640;
		gscreen.r.max.y = 480;
		gscreen.ldepth = 0;
		p = getconf("vgasize");
		if(p && *p>='0' && *p<='9') {
			x = screendim(&p, 0, 2048);
			y = screendim(&p, 0, 1024);
			z = screendim(&p, 1, 8);
			if((conf.npage*BY2PG)/MB >= 8) { /* less greedy on small machines */
				gscreen.r.max.x = x;
				gscreen.r.max.y = y;
			}
			for(; (1<<gscreen.ldepth) < z; gscreen.ldepth++)
				;
		}
		if(x <= 640)
			memmove(&arrow, &fatarrow, sizeof(fatarrow));	/* assume it's a notebook */
	}

.
598a
	char *p;
.
597c
	int i, x, y, z;
.
593a
static int
screendim(char **p, int lb, int ub)
{
	int i;

	i = strtol(*p, p, 10);
	if(i < lb)
		i = lb;
	if(i > ub)
		i = ub;
	if(**p == 'x')
		(*p)++;
	return i;
}

.
wq
//GO.SYSIN DD VADIM devvga.c
sum=`{sum < 811554507/devvga.c}
if(~ 28f457c324100  $sum(1)^$sum(2))
	echo
if not{
	echo 811554507/devvga.c checksum error creating updated file
	exit checksum
}