36 lines
641 B
C
36 lines
641 B
C
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#include <stdarg.h>
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#include <stdio.h>
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#include "kstring.h"
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int ksprintf(kstring_t *s, const char *fmt, ...)
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{
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va_list ap;
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int l;
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va_start(ap, fmt);
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l = vsnprintf(s->s + s->l, s->m - s->l, fmt, ap);
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va_end(ap);
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if (l + 1 > s->m - s->l) {
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s->m = s->l + l + 2;
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kroundup32(s->m);
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s->s = (char*)realloc(s->s, s->m);
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va_start(ap, fmt);
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l = vsnprintf(s->s + s->l, s->m - s->l, fmt, ap);
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}
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va_end(ap);
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s->l += l;
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return l;
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}
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#ifdef KSTRING_MAIN
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#include <stdio.h>
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int main()
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{
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kstring_t *s;
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s = (kstring_t*)calloc(1, sizeof(kstring_t));
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ksprintf(s, "abcdefg: %d", 100);
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printf("%s\n", s->s);
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free(s);
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return 0;
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}
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#endif
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