38 lines
574 B
C
38 lines
574 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include "asprintf.h"
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int vasprintf(char **strp, const char *fmt, va_list ap) {
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int size, res;
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va_list cp;
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va_copy(cp, ap);
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size = vsnprintf(NULL, 0, fmt, cp);
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va_end(cp);
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if (size < 0)
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return -1;
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*strp = (char *)malloc(size + 1);
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if (*strp == NULL)
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return -1;
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res = vsnprintf(*strp, size + 1, fmt, ap);
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if (res < 0) {
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free(*strp);
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return -1;
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}
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return res;
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}
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int asprintf(char **s, const char *fmt, ...) {
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int ret;
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va_list ap;
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va_start(ap, fmt);
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ret = vasprintf(s, fmt, ap);
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va_end(ap);
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return ret;
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}
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