228 lines
6.7 KiB
C
228 lines
6.7 KiB
C
/**
|
|
* @file
|
|
*
|
|
* @section DESCRIPTION
|
|
*
|
|
* These functions provide a portable implementation of the common (but not
|
|
* yet universal) asprintf & vasprintf routines to allocate a buffer big
|
|
* enough to sprintf the arguments to. The XNF variants terminate the server
|
|
* if the allocation fails.
|
|
*/
|
|
/*
|
|
* Copyright (c) 2004 Alexander Gottwald
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Except as contained in this notice, the name(s) of the above copyright
|
|
* holders shall not be used in advertising or otherwise to promote the sale,
|
|
* use or other dealings in this Software without prior written authorization.
|
|
*/
|
|
/*
|
|
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifdef HAVE_DIX_CONFIG_H
|
|
#include <dix-config.h>
|
|
#endif
|
|
|
|
#include <X11/Xos.h>
|
|
#include "os.h"
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
|
|
#ifdef asprintf
|
|
# undef asprintf
|
|
#endif
|
|
#ifdef vasprintf
|
|
# undef vasprintf
|
|
#endif
|
|
|
|
#ifndef va_copy
|
|
# ifdef __va_copy
|
|
# define va_copy __va_copy
|
|
# else
|
|
# error "no working va_copy was found"
|
|
# endif
|
|
#endif
|
|
|
|
/**
|
|
* Varargs sprintf that allocates a string buffer the right size for
|
|
* the pattern & data provided and prints the requested data to it.
|
|
*
|
|
* @param ret Pointer to which the newly allocated buffer is written
|
|
* (contents undefined on error)
|
|
* @param format printf style format string
|
|
* @param va variable argument list
|
|
* @return size of allocated buffer, or -1 on error.
|
|
*/
|
|
int
|
|
Xvasprintf(char **ret, const char * _X_RESTRICT_KYWD format, va_list va)
|
|
{
|
|
#ifdef HAVE_VASPRINTF
|
|
return vasprintf(ret, format, va);
|
|
#else
|
|
int size;
|
|
va_list va2;
|
|
|
|
va_copy(va2, va);
|
|
size = vsnprintf(NULL, 0, format, va2);
|
|
va_end(va2);
|
|
|
|
*ret = malloc(size + 1);
|
|
if (*ret == NULL)
|
|
return -1;
|
|
|
|
vsnprintf(*ret, size + 1, format, va);
|
|
(*ret)[size] = 0;
|
|
return size;
|
|
#endif
|
|
}
|
|
|
|
#ifndef HAVE_VASPRINTF
|
|
# define vasprintf Xvasprintf
|
|
#endif
|
|
|
|
/**
|
|
* sprintf that allocates a string buffer the right size for
|
|
* the pattern & data provided and prints the requested data to it.
|
|
*
|
|
* @param ret Pointer to which the newly allocated buffer is written
|
|
* (contents undefined on error)
|
|
* @param format printf style format string
|
|
* @param ... arguments for specified format
|
|
* @return size of allocated buffer, or -1 on error.
|
|
*/
|
|
int
|
|
Xasprintf(char ** ret, const char * _X_RESTRICT_KYWD format, ...)
|
|
{
|
|
int size;
|
|
va_list va;
|
|
va_start(va, format);
|
|
size = vasprintf(ret, format, va);
|
|
va_end(va);
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* Varargs sprintf that allocates a string buffer the right size for
|
|
* the pattern & data provided and prints the requested data to it.
|
|
* On failure, issues a FatalError message and aborts the server.
|
|
*
|
|
* @param ret Pointer to which the newly allocated buffer is written
|
|
* (contents undefined on error)
|
|
* @param format printf style format string
|
|
* @param va variable argument list
|
|
* @return size of allocated buffer
|
|
*/
|
|
int
|
|
XNFvasprintf(char **ret, const char * _X_RESTRICT_KYWD format, va_list va)
|
|
{
|
|
int size = vasprintf(ret, format, va);
|
|
if ((size == -1) || (*ret == NULL)) {
|
|
FatalError("XNFvasprintf failed: %s", strerror(errno));
|
|
}
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* sprintf that allocates a string buffer the right size for
|
|
* the pattern & data provided and prints the requested data to it.
|
|
* On failure, issues a FatalError message and aborts the server.
|
|
*
|
|
* @param ret Pointer to which the newly allocated buffer is written
|
|
* (contents undefined on error)
|
|
* @param format printf style format string
|
|
* @param ... arguments for specified format
|
|
* @return size of allocated buffer
|
|
*/
|
|
int
|
|
XNFasprintf(char ** ret, const char * _X_RESTRICT_KYWD format, ...)
|
|
{
|
|
int size;
|
|
va_list va;
|
|
va_start(va, format);
|
|
size = XNFvasprintf(ret, format, va);
|
|
va_end(va);
|
|
return size;
|
|
}
|
|
|
|
/* Old api, now deprecated, may be removed in the future */
|
|
char *
|
|
Xvprintf(const char *format, va_list va)
|
|
{
|
|
char *ret;
|
|
|
|
if (vasprintf(&ret, format, va) == -1)
|
|
ret = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
char *Xprintf(const char *format, ...)
|
|
{
|
|
char *ret;
|
|
va_list va;
|
|
va_start(va, format);
|
|
if (vasprintf(&ret, format, va) == -1)
|
|
ret = NULL;
|
|
va_end(va);
|
|
return ret;
|
|
}
|
|
|
|
char *
|
|
XNFvprintf(const char *format, va_list va)
|
|
{
|
|
char *ret;
|
|
|
|
XNFvasprintf(&ret, format, va);
|
|
|
|
return ret;
|
|
}
|
|
|
|
char *XNFprintf(const char *format, ...)
|
|
{
|
|
char *ret;
|
|
va_list va;
|
|
va_start(va, format);
|
|
XNFvasprintf(&ret, format, va);
|
|
va_end(va);
|
|
return ret;
|
|
}
|