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