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36 lines
559 B
C
36 lines
559 B
C
/*
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* asprintf.c
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*
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* Author: Intel A80486DX2-66
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* License: Creative Commons Zero 1.0 Universal
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*/
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#include "asprintf.h"
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ssize_t asprintf(char** strp, char* format, ...) {
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va_list args;
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va_start(args, format);
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ssize_t size = (ssize_t) vsnprintf(NULL, 0, format, args);
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if (size < 0) {
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va_end(args);
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return -1;
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}
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*strp = malloc(++size);
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if (*strp == NULL) {
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va_end(args);
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return -1;
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}
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ssize_t result = (ssize_t) vsnprintf(*strp, size, format, args);
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va_end(args);
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if (result < 0) {
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free(*strp);
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return -1;
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}
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return result;
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}
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