xasprintf.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "xasprintf.h"

Include dependency graph for xasprintf.c:

Go to the source code of this file.

Functions
int	_vscprintf_so (const char *format, va_list pargs)
int	vasprintf (char **strp, const char *fmt, va_list ap)
int	asprintf (char *strp[], const char *fmt,...)

Function Documentation

_vscprintf_so()

int _vscprintf_so	(	const char *	format,
		va_list	pargs
	)

Definition at line 16 of file xasprintf.c.

                                                      {
    int retval;
    va_list argcopy;
    va_copy(argcopy, pargs);
    retval = vsnprintf(NULL, 0, format, argcopy);
    va_end(argcopy);
    return retval;
}

asprintf()

int asprintf	(	char *	strp[],
		const char *	fmt,
			...
	)

Definition at line 36 of file xasprintf.c.

                                                 {
    va_list ap;
    va_start(ap, fmt);
    int r = vasprintf(strp, fmt, ap);
    va_end(ap);
    return r;
}

References vasprintf().

vasprintf()

int vasprintf	(	char **	strp,
		const char *	fmt,
		va_list	ap
	)

Definition at line 25 of file xasprintf.c.

                                                        {
    int len = _vscprintf_so(fmt, ap);
    if (len == -1) return -1;
    char *str = malloc((size_t) len + 1);
    if (!str) return -1;
    int r = vsnprintf(str, len + 1, fmt, ap);
    if (r == -1) return free(str), -1;
    *strp = str;
    return r;
}

References _vscprintf_so().