shithub: bin.rc

ref: a739eb939b352f37941f46910551cc2070ecd5bb
dir: /bin/crap/

#!/bin/rc
# crap [ -s sandbox ]
# commands:
# 	empty line executes
#	p, P - print code / sandbox
#	c, C - clear code / sandbox
#	e, E - open $editor on code / sandbox
#	s - print assembly listing
#	d - run acid(1)
#	t - run time(1)

rfork en

if(~ $#editor 0)
	editor=(ed)
nl='
'
tab='	'
sandbox0=sandbox0.$pid.c
sandbox=sandbox.$pid.c
tmp=tmp.$pid.c
util=util.$pid.h
code=code.$pid.c
mkfile=mkfile.$pid

fn generate {
	<$sandbox >$tmp ssam '
	/\/\*START\*\//+1 , /\/\*END\*\//-1 c/\n/
	/\/\*START\*\//+1 r '$code
	cp $tmp $sandbox
}

ramfs -bc -m .

>$mkfile echo '
</$objtype/mkfile
CFLAGS=-FTVN
default:VQ:
	$CC $CFLAGS -o sandbox.$O '^$sandbox^'
	$LD $LDFLAGS sandbox.$O
asm:VQ:
	$CC $CFLAGS -S '^$sandbox^'
run:VQ: default
	./$O.out
time:VQ: default
	time ./$O.out'

>$util echo '
char errmsg[ERRMAX];
#define err \
	rerrstr(errmsg, ERRMAX); \
	if(errmsg[0] != 0) print("error: %r\n");
#define fail \
	rerrstr(errmsg, ERRMAX); \
	if(errmsg[0] != 0) sysfatal("%r");'

>$sandbox0 echo '
#include <u.h>
#include <libc.h>
#include "'^$util^'"
void
main(int, char *[])
{
	/*START*/

	/*END*/
	exits(nil);
}'

while(! ~ $#* 0 && ~ $1 -* && ! ~ $1 --){
	switch($1){
	case -s
		cp $2 $sandbox0
		shift
	}
	shift
}
cp $sandbox0 $sandbox

echo -n >$code
while(line=`$nl{read}){
	if(! echo $"line | grep -s '^.$' && ! ~ $#line 0){
		echo -n $"tab >>$code
		echo $"line >>$code
	}
	if not{
		cmd=$line
		switch($cmd){
		case s
			generate
			mk -f $mkfile asm
		case d
			generate
			mk -f $mkfile run
			acid *.out
		case t
			generate
			mk -f $mkfile time
		case e
			$editor $code
		case E
			$editor $sandbox
			<$sandbox >$code ssam -n '/\/\*START\*\//+1 , /\/\*END\*\//-1 p'
		case p
			cat $code
		case P
			cat $sandbox
		case c
			echo >$code
			generate
		case C
			cp $sandbox0 $sandbox
		case *
			generate
			mk -f $mkfile run
		}
	}
}