31 lines
555 B
C
31 lines
555 B
C
#include <string.h>
|
|
|
|
char * strtok(char * restrict str, char * restrict sep) {
|
|
static char * state;
|
|
char * search_str;
|
|
int i = 0, sep_size = strlen(sep);
|
|
|
|
if(str != NULL) {
|
|
search_str = str;
|
|
}
|
|
else {
|
|
search_str = state;
|
|
}
|
|
|
|
while(*search_str != '\0' && strcmp(search_str, sep) == 0) {
|
|
search_str += sep_size;
|
|
}
|
|
|
|
if(*search_str == '\0') {
|
|
return NULL;
|
|
}
|
|
|
|
while(search_str[i] != '\0' && strcmp(&(search_str[i]), sep) != 0) {
|
|
i++;
|
|
}
|
|
|
|
search_str[i] = '\0';
|
|
state = &(search_str[i + 1]);
|
|
return search_str;
|
|
}
|