1 2277c5d7 2004-03-21 devnull #include "std.h"
 2 2277c5d7 2004-03-21 devnull #include "dat.h"
 3 2277c5d7 2004-03-21 devnull 
 4 2277c5d7 2004-03-21 devnull static int
 5 2277c5d7 2004-03-21 devnull unhex(char c)
 6 2277c5d7 2004-03-21 devnull {
 7 2277c5d7 2004-03-21 devnull 	if('0' <= c && c <= '9')
 8 2277c5d7 2004-03-21 devnull 		return c-'0';
 9 2277c5d7 2004-03-21 devnull 	if('a' <= c && c <= 'f')
10 2277c5d7 2004-03-21 devnull 		return c-'a'+10;
11 2277c5d7 2004-03-21 devnull 	if('A' <= c && c <= 'F')
12 2277c5d7 2004-03-21 devnull 		return c-'A'+10;
13 2277c5d7 2004-03-21 devnull 	abort();
14 2277c5d7 2004-03-21 devnull 	return -1;
15 2277c5d7 2004-03-21 devnull }
16 2277c5d7 2004-03-21 devnull 
17 2277c5d7 2004-03-21 devnull int
18 2277c5d7 2004-03-21 devnull hexparse(char *hex, uchar *dat, int ndat)
19 2277c5d7 2004-03-21 devnull {
20 2277c5d7 2004-03-21 devnull 	int i, n;
21 2277c5d7 2004-03-21 devnull 
22 2277c5d7 2004-03-21 devnull 	n = strlen(hex);
23 2277c5d7 2004-03-21 devnull 	if(n%2)
24 2277c5d7 2004-03-21 devnull 		return -1;
25 2277c5d7 2004-03-21 devnull 	n /= 2;
26 2277c5d7 2004-03-21 devnull 	if(n > ndat)
27 2277c5d7 2004-03-21 devnull 		return -1;
28 2277c5d7 2004-03-21 devnull 	if(hex[strspn(hex, "0123456789abcdefABCDEF")] != '\0')
29 2277c5d7 2004-03-21 devnull 		return -1;
30 2277c5d7 2004-03-21 devnull 	for(i=0; i<n; i++)
31 2277c5d7 2004-03-21 devnull 		dat[i] = (unhex(hex[2*i])<<4)|unhex(hex[2*i+1]);
32 2277c5d7 2004-03-21 devnull 	return n;
33 2277c5d7 2004-03-21 devnull }
34 2277c5d7 2004-03-21 devnull 
35 2277c5d7 2004-03-21 devnull char*
36 2277c5d7 2004-03-21 devnull estrappend(char *s, char *fmt, ...)
37 2277c5d7 2004-03-21 devnull {
38 2277c5d7 2004-03-21 devnull 	char *t;
39 2277c5d7 2004-03-21 devnull 	va_list arg;
40 2277c5d7 2004-03-21 devnull 
41 2277c5d7 2004-03-21 devnull 	va_start(arg, fmt);
42 2277c5d7 2004-03-21 devnull 	t = vsmprint(fmt, arg);
43 2277c5d7 2004-03-21 devnull 	if(t == nil)
44 2277c5d7 2004-03-21 devnull 		sysfatal("out of memory");
45 2277c5d7 2004-03-21 devnull 	va_end(arg);
46 2277c5d7 2004-03-21 devnull 	s = erealloc(s, strlen(s)+strlen(t)+1);
47 2277c5d7 2004-03-21 devnull 	strcat(s, t);
48 2277c5d7 2004-03-21 devnull 	free(t);
49 2277c5d7 2004-03-21 devnull 	return s;
50 2277c5d7 2004-03-21 devnull }
51 2277c5d7 2004-03-21 devnull 
52 2277c5d7 2004-03-21 devnull