sys/src/liboventi/parsescore.c

   1 #include <u.h>
   2 #include <libc.h>
   3 #include <oventi.h>
   4
   5 int
   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