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1 #include <stdarg.h>
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2 #include <stdio.h>
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3 #include "kstring.h"
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4
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5 int ksprintf(kstring_t *s, const char *fmt, ...)
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6 {
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7 va_list ap;
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8 int l;
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9 va_start(ap, fmt);
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10 l = vsnprintf(s->s + s->l, s->m - s->l, fmt, ap);
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11 va_end(ap);
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12 if (l + 1 > s->m - s->l) {
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13 s->m = s->l + l + 2;
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14 kroundup32(s->m);
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15 s->s = (char*)realloc(s->s, s->m);
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16 va_start(ap, fmt);
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17 l = vsnprintf(s->s + s->l, s->m - s->l, fmt, ap);
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18 }
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19 va_end(ap);
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20 s->l += l;
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21 return l;
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22 }
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23
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24 #ifdef KSTRING_MAIN
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25 #include <stdio.h>
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26 int main()
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27 {
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28 kstring_t *s;
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29 s = (kstring_t*)calloc(1, sizeof(kstring_t));
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30 ksprintf(s, "abcdefg: %d", 100);
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31 printf("%s\n", s->s);
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32 free(s);
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33 return 0;
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34 }
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35 #endif
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