ref: 17ebe55031ae6945ad1f671b69267a672328e4b1
dir: /sys/src/cmd/venti/srv/score.c/
#include "stdinc.h" #include "dat.h" #include "fns.h" u8int zeroscore[VtScoreSize]; /* Call this function to force linking of score.o for zeroscore on OS X */ void needzeroscore(void) { } void scoremem(u8int *score, u8int *buf, int n) { DigestState s; memset(&s, 0, sizeof s); sha1(buf, n, score, &s); } static int hexv(int c) { if(c >= '0' && c <= '9') return c - '0'; if(c >= 'a' && c <= 'f') return c - 'a' + 10; if(c >= 'A' && c <= 'F') return c - 'A' + 10; return -1; } int strscore(char *s, u8int *score) { int i, c, d; for(i = 0; i < VtScoreSize; i++){ c = hexv(s[2 * i]); if(c < 0) return -1; d = hexv(s[2 * i + 1]); if(d < 0) return -1; score[i] = (c << 4) + d; } return s[2 * i] == '\0'; }