asprintf.c File Reference

GIS Library - GRASS implementation of asprintf(). More...

#include <grass/config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <assert.h>
#include <grass/gis.h>

Include dependency graph for asprintf.c:

Go to the source code of this file.

Macros
#define	_GNU_SOURCE   /* enable asprintf */

Functions
int	G_vasprintf (char **out, const char *fmt, va_list ap)
	Safe replacement for asprintf(). More...
int	G_asprintf (char **out, const char *fmt,...)

Detailed Description

GIS Library - GRASS implementation of asprintf().

Eric G. Miller - Thu, 2 May 2002 17:51:54 -0700

I've got a sort of cheat for asprintf. We can't use vsnprintf for the same reason we can't use snprintf ;-) Comments welcome.

We cheat by printing to a tempfile via vfprintf() and then reading it back in. Probably not the most efficient way.

WARNING: Temporarily, the G_asprintf macro cannot be used. See explanation in gisdefs.h.

(C) 2001-2008 by the GRASS Development Team

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author

Eric Miller - egm2 at jps net

Date

2002-2008

Definition in file asprintf.c.

Macro Definition Documentation

#define _GNU_SOURCE   /* enable asprintf */

Definition at line 28 of file asprintf.c.

Function Documentation

int G_asprintf	(	char **	out,
		const char *	fmt,
			...
	)

Definition at line 116 of file asprintf.c.

References count, and G_vasprintf().

Referenced by db_read_dbmscap(), db_select_CatValArray(), db_select_int(), db_select_value(), GPJ__get_datum_params(), GPJ__get_ellipsoid_params(), GPJ_ask_datum_params(), GPJ_get_datum_transform_by_name(), GPJ_grass_to_osr(), GPJ_osr_to_grass(), GPJ_set_csv_loc(), and make_mapset().

int G_vasprintf	(	char **	out,
		const char *	fmt,
		va_list	ap
	)

Safe replacement for asprintf().

Allocate a string large enough to hold the new output, including the terminating NULL, and returns a pointer to the first parameter. The pointer should be passed to G_free() to release the allocated storage when it is no longer needed.

Parameters

[out]	out
[in]	fmt

Returns

number of bytes written

Definition at line 66 of file asprintf.c.

References count, fclose(), file_name, G_free(), and NULL.

Referenced by G_asprintf().