1 6e527fbc 2005-02-13 devnull #include "std.h"
 2 6e527fbc 2005-02-13 devnull #include "dat.h"
 3 6e527fbc 2005-02-13 devnull 
 4 6e527fbc 2005-02-13 devnull static int
 5 6e527fbc 2005-02-13 devnull unhex(char c)
 6 6e527fbc 2005-02-13 devnull {
 7 6e527fbc 2005-02-13 devnull 	if('0' <= c && c <= '9')
 8 6e527fbc 2005-02-13 devnull 		return c-'0';
 9 6e527fbc 2005-02-13 devnull 	if('a' <= c && c <= 'f')
10 6e527fbc 2005-02-13 devnull 		return c-'a'+10;
11 6e527fbc 2005-02-13 devnull 	if('A' <= c && c <= 'F')
12 6e527fbc 2005-02-13 devnull 		return c-'A'+10;
13 6e527fbc 2005-02-13 devnull 	abort();
14 6e527fbc 2005-02-13 devnull 	return -1;
15 6e527fbc 2005-02-13 devnull }
16 6e527fbc 2005-02-13 devnull 
17 6e527fbc 2005-02-13 devnull int
18 6e527fbc 2005-02-13 devnull hexparse(char *hex, uchar *dat, int ndat)
19 6e527fbc 2005-02-13 devnull {
20 6e527fbc 2005-02-13 devnull 	int i, n;
21 6e527fbc 2005-02-13 devnull 
22 6e527fbc 2005-02-13 devnull 	n = strlen(hex);
23 6e527fbc 2005-02-13 devnull 	if(n%2)
24 6e527fbc 2005-02-13 devnull 		return -1;
25 6e527fbc 2005-02-13 devnull 	n /= 2;
26 6e527fbc 2005-02-13 devnull 	if(n > ndat)
27 6e527fbc 2005-02-13 devnull 		return -1;
28 6e527fbc 2005-02-13 devnull 	if(hex[strspn(hex, "0123456789abcdefABCDEF")] != '\0')
29 6e527fbc 2005-02-13 devnull 		return -1;
30 6e527fbc 2005-02-13 devnull 	for(i=0; i<n; i++)
31 6e527fbc 2005-02-13 devnull 		dat[i] = (unhex(hex[2*i])<<4)|unhex(hex[2*i+1]);
32 6e527fbc 2005-02-13 devnull 	return n;
33 6e527fbc 2005-02-13 devnull }
34 6e527fbc 2005-02-13 devnull 
35 6e527fbc 2005-02-13 devnull char*
36 6e527fbc 2005-02-13 devnull estrappend(char *s, char *fmt, ...)
37 6e527fbc 2005-02-13 devnull {
38 6e527fbc 2005-02-13 devnull 	char *t;
39 6e527fbc 2005-02-13 devnull 	int l;
40 6e527fbc 2005-02-13 devnull 	va_list arg;
41 6e527fbc 2005-02-13 devnull 
42 6e527fbc 2005-02-13 devnull 	va_start(arg, fmt);
43 6e527fbc 2005-02-13 devnull 	t = vsmprint(fmt, arg);
44 6e527fbc 2005-02-13 devnull 	if(t == nil)
45 6e527fbc 2005-02-13 devnull 		sysfatal("out of memory");
46 6e527fbc 2005-02-13 devnull 	va_end(arg);
47 6e527fbc 2005-02-13 devnull 	l = s ? strlen(s) : 0;
48 6e527fbc 2005-02-13 devnull 	s = erealloc(s, l+strlen(t)+1);
49 6e527fbc 2005-02-13 devnull 	strcpy(s+l, t);
50 6e527fbc 2005-02-13 devnull 	free(t);
51 6e527fbc 2005-02-13 devnull 	return s;
52 6e527fbc 2005-02-13 devnull }
53 6e527fbc 2005-02-13 devnull 
54 6e527fbc 2005-02-13 devnull