xref: /plan9/sys/src/liboventi/parsescore.c (revision 368c31ab13393dea083228fdd1c3445076f83a4b)
1 #include <u.h>
2 #include <libc.h>
3 #include <oventi.h>
4 
5 int
vtParseScore(char * buf,uint n,uchar score[VtScoreSize])6 vtParseScore(char *buf, uint n, uchar score[VtScoreSize])
7 {
8 	int i, c;
9 
10 	memset(score, 0, VtScoreSize);
11 
12 	if(n != VtScoreSize*2)
13 		return 0;
14 	for(i=0; i<VtScoreSize*2; i++){
15 		if(buf[i] >= '0' && buf[i] <= '9')
16 			c = buf[i] - '0';
17 		else if(buf[i] >= 'a' && buf[i] <= 'f')
18 			c = buf[i] - 'a' + 10;
19 		else if(buf[i] >= 'A' && buf[i] <= 'F')
20 			c = buf[i] - 'A' + 10;
21 		else
22 			return 0;
23 
24 		if((i & 1) == 0)
25 			c <<= 4;
26 
27 		score[i>>1] |= c;
28 	}
29 	return 1;
30 }
31 
32