Warning: Attempt to read property "date" on null in /usr/local/www/websvn.planix.org/blame.php on line 247

Warning: Attempt to read property "msg" on null in /usr/local/www/websvn.planix.org/blame.php on line 247
WebSVN – planix.SVN – Blame – /os/branches/feature-vt/sys/src/libflate/inflateblock.c – Rev 2

Subversion Repositories planix.SVN

Rev

Go to most recent revision | Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 1 
#include <u.h>
2 
#include <libc.h>
3 
#include <flate.h>
4 
 
5 
typedef struct Block	Block;
6 
 
7 
struct Block
8 
{
9 
	uchar	*pos;
10 
	uchar	*limit;
11 
};
12 
 
13 
static int
14 
blgetc(void *vb)
15 
{
16 
	Block *b;
17 
 
18 
	b = vb;
19 
	if(b->pos >= b->limit)
20 
		return -1;
21 
	return *b->pos++;
22 
}
23 
 
24 
static int
25 
blwrite(void *vb, void *buf, int n)
26 
{
27 
	Block *b;
28 
 
29 
	b = vb;
30 
 
31 
	if(n > b->limit - b->pos)
32 
		n = b->limit - b->pos;
33 
	memmove(b->pos, buf, n);
34 
	b->pos += n;
35 
	return n;
36 
}
37 
 
38 
int
39 
inflateblock(uchar *dst, int dsize, uchar *src, int ssize)
40 
{
41 
	Block bd, bs;
42 
	int ok;
43 
 
44 
	bs.pos = src;
45 
	bs.limit = src + ssize;
46 
 
47 
	bd.pos = dst;
48 
	bd.limit = dst + dsize;
49 
 
50 
	ok = inflate(&bd, blwrite, &bs, blgetc);
51 
	if(ok != FlateOk)
52 
		return ok;
53 
	return bd.pos - dst;
54 
}