draw.ed

在x86平台上运行不可信任代码的sandbox。

/#include "pool/d
,s/(i=x\&(npack-1))/(&)/
,s/(p=b.grey)/(&)/
,s/(p=b.red)/(&)/
,s/(p=b.grn)/(&)/
,s/(p=b.blu)/(&)/
g/imagmem/d
,s/SET(bits)/bits=0/
g/ptrfn/d
g/^static.*drawbuf;/d
/^readcmap/+4a
	memset(&b, 0, sizeof b); // shut up gcc
.
/^readptr/+4a
	memset(&b, 0, sizeof b); // shut up gcc
.
/^readnbit/+4a
	memset(&b, 0, sizeof b); // shut up gcc
.
/^	static int n = 0;/d
/pixel value is now in high/ s!/\*!//!
/^static Dbuf dbuf/a
extern int _tas(int*);
.
/^imgtorgba/ s/^/_/
.-1s/static //
/^rgbatoimg/ s/^/_/
.-1s/static //
/^pixelbits/ s/^/_/
.-1s/static //
/^memfillcolor/ s/^/_/
,s/draw(\&par)/draw(par)/g
/Now that we've clipped/-2i

	return ∥
}

void
_memimagedraw(Memdrawparam *par)
{
	if(par == nil)
		return;
.
/^	Memdrawparam par/ s/Mem/static Mem/
/^memimagedraw/ s/memimagedraw/_memimagedrawsetup/
.-1s/void/Memdrawparam*/
.,/return \&par/ s/return;/return nil;/
/^static ulong imgtorgba/d
/^static ulong rgbatoimg/d
/^static ulong pixelbits/d
/^memimageinit/ s/^/_/
,s/_ifmt/__ifmt/g
,s/ imgtorgba/ _imgtorgba/g
,s/ rgbatoimg/ _rgbatoimg/g
/^memsetb/-1i
#if 0
.
/^}/a
#endif
.
/^memsets
,s/Replsrc|Simplesrc/Replsrc|Simplesrc|Fullsrc/g
/par.srgba\&0xFF/i
			if((par.srgba&0xFF) == 0xFF)
				par.state |= Fullsrc;
.