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/* GLIB - Library of useful routines for C programming
* Copyright (C) 2003 Matthias Clasen
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GLib Team and others 2003. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <config.h>
#include <errno.h>
#include <limits.h> /* for INT_MAX */
#include <stdint.h> /* for uintptr_t, SIZE_MAX */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "printf.h"
#include "g-gnulib.h"
#include "vasnprintf.h"
int _g_gnulib_printf (char const *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = _g_gnulib_vprintf (format, args);
va_end (args);
return retval;
}
int _g_gnulib_fprintf (FILE *file, char const *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = _g_gnulib_vfprintf (file, format, args);
va_end (args);
return retval;
}
int _g_gnulib_sprintf (char *string, char const *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = _g_gnulib_vsprintf (string, format, args);
va_end (args);
return retval;
}
int _g_gnulib_snprintf (char *string, size_t n, char const *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = _g_gnulib_vsnprintf (string, n, format, args);
va_end (args);
return retval;
}
int _g_gnulib_vprintf (char const *format, va_list args)
{
return _g_gnulib_vfprintf (stdout, format, args);
}
int _g_gnulib_vfprintf (FILE *file, char const *format, va_list args)
{
char *result;
size_t length, rlength;
result = vasnprintf (NULL, &length, format, args);
if (result == NULL)
return -1;
rlength = fwrite (result, 1, length, file);
free (result);
return rlength;
}
int _g_gnulib_vsprintf (char *str, char const *format, va_list args)
{
char *output;
size_t len;
size_t lenbuf;
/* Set lenbuf = min (SIZE_MAX, - (uintptr_t) str - 1). */
lenbuf = SIZE_MAX;
if (lenbuf >= ~ (uintptr_t) str)
lenbuf = ~ (uintptr_t) str;
output = vasnprintf (str, &lenbuf, format, args);
len = lenbuf;
if (!output)
return -1;
if (output != str)
{
/* len is near SIZE_MAX. */
free (output);
errno = ENOMEM;
return -1;
}
if (len > INT_MAX)
{
errno = EOVERFLOW;
return -1;
}
return len;
}
int _g_gnulib_vsnprintf (char *str, size_t size, char const *format, va_list args)
{
char *output;
size_t len;
size_t lenbuf = size;
output = vasnprintf (str, &lenbuf, format, args);
len = lenbuf;
if (!output)
return -1;
if (output != str)
{
if (size)
{
size_t pruned_len = (len < size ? len : size - 1);
memcpy (str, output, pruned_len);
str[pruned_len] = '\0';
}
free (output);
}
if (len > INT_MAX)
{
errno = EOVERFLOW;
return -1;
}
return len;
}
int _g_gnulib_vasprintf (char **result, char const *format, va_list args)
{
size_t length;
*result = vasnprintf (NULL, &length, format, args);
if (*result == NULL)
return -1;
return length;
}
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