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/* imported from remctl-2.12 */
/* Replacement for a missing asprintf and vasprintf.
*
* Provides the same functionality as the standard GNU library routines
* asprintf and vasprintf for those platforms that don't have them.
*
* Written by Russ Allbery <rra@stanford.edu>
* This work is hereby placed in the public domain by its author.
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "asprintf.h"
int
ncap_asprintf(char **strp, const char *fmt, ...) {
va_list args;
int status;
va_start(args, fmt);
status = ncap_vasprintf(strp, fmt, args);
va_end(args);
return (status);
}
int
ncap_vasprintf(char **strp, const char *fmt, va_list args) {
va_list args_copy;
int status, needed;
va_copy(args_copy, args);
needed = vsnprintf(NULL, 0, fmt, args_copy);
va_end(args_copy);
if (needed < 0) {
*strp = NULL;
return (needed);
}
*strp = malloc(needed + 1);
if (*strp == NULL)
return (-1);
status = vsnprintf(*strp, needed + 1, fmt, args);
if (status >= 0)
return (status);
else {
free(*strp);
*strp = NULL;
return (status);
}
}
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