📄 strtok.c
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#include <u.h>#include <libc.h>#define N 256char*strtok(char *s, char *b){ static char *under_rock; char map[N], *os; memset(map, 0, N); while(*b) map[*(uchar*)b++] = 1; if(s == 0) s = under_rock; while(map[*(uchar*)s++]) ; if(*--s == 0) return 0; os = s; while(map[*(uchar*)s] == 0) if(*s++ == 0) { under_rock = s-1; return os; } *s++ = 0; under_rock = s; return os;}
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