gstreamer/gst/printf/printf.c
Tim-Philipp Müller 8fc876f09f printf: add our own printf implementation for debug logging
We will add support for our own printf modifiers, so we can
get nice debug log output on all operating systems irrespective
of the specific libc version used.

https://bugzilla.gnome.org/show_bug.cgi?id=613081
2013-04-12 23:05:56 +01:00

157 lines
3.2 KiB
C

/* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* 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/.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "gst-printf.h"
#include "vasnprintf.h"
#include "printf.h"
int
__gst_printf (char const *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = __gst_vprintf (format, args);
va_end (args);
return retval;
}
int
__gst_fprintf (FILE * file, char const *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = __gst_vfprintf (file, format, args);
va_end (args);
return retval;
}
int
__gst_sprintf (char *string, char const *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = __gst_vsprintf (string, format, args);
va_end (args);
return retval;
}
int
__gst_snprintf (char *string, size_t n, char const *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = __gst_vsnprintf (string, n, format, args);
va_end (args);
return retval;
}
int
__gst_vprintf (char const *format, va_list args)
{
return __gst_vfprintf (stdout, format, args);
}
int
__gst_vfprintf (FILE * file, char const *format, va_list args)
{
char *result;
size_t length;
result = vasnprintf (NULL, &length, format, args);
if (result == NULL)
return -1;
fwrite (result, 1, length, file);
free (result);
return length;
}
int
__gst_vsprintf (char *string, char const *format, va_list args)
{
char *result;
size_t length;
result = vasnprintf (NULL, &length, format, args);
if (result == NULL)
return -1;
memcpy (string, result, length + 1);
free (result);
return length;
}
int
__gst_vsnprintf (char *string, size_t n, char const *format, va_list args)
{
char *result;
size_t length;
result = vasnprintf (NULL, &length, format, args);
if (result == NULL)
return -1;
if (n > 0) {
memcpy (string, result, MIN (length + 1, n));
string[n - 1] = 0;
}
free (result);
return length;
}
int
__gst_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;
}