1 #include "sam.h"
2
3 void
cvttorunes(char * p,int n,Rune * r,int * nb,int * nr,int * nulls)4 cvttorunes(char *p, int n, Rune *r, int *nb, int *nr, int *nulls)
5 {
6 uchar *q;
7 Rune *s;
8 int j, w;
9
10 /*
11 * Always guaranteed that n bytes may be interpreted
12 * without worrying about partial runes. This may mean
13 * reading up to UTFmax-1 more bytes than n; the caller
14 * knows this. If n is a firm limit, the caller should
15 * set p[n] = 0.
16 */
17 q = (uchar*)p;
18 s = r;
19 for(j=0; j<n; j+=w){
20 if(*q < Runeself){
21 w = 1;
22 *s = *q++;
23 }else{
24 w = chartorune(s, (char*)q);
25 q += w;
26 }
27 if(*s)
28 s++;
29 else if(nulls)
30 *nulls = TRUE;
31 }
32 *nb = (char*)q-p;
33 *nr = s-r;
34 }
35
36 void*
fbufalloc(void)37 fbufalloc(void)
38 {
39 return emalloc(BUFSIZE);
40 }
41
42 void
fbuffree(void * f)43 fbuffree(void *f)
44 {
45 free(f);
46 }
47
48 uint
min(uint a,uint b)49 min(uint a, uint b)
50 {
51 if(a < b)
52 return a;
53 return b;
54 }
55