xprintf.c revision 6747b715 
1/*
2 * printf routines which xalloc their buffer
3 */
4/*
5 * Copyright (c) 2004 Alexander Gottwald
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 *
25 * Except as contained in this notice, the name(s) of the above copyright
26 * holders shall not be used in advertising or otherwise to promote the sale,
27 * use or other dealings in this Software without prior written authorization.
28 */
29#ifdef HAVE_DIX_CONFIG_H
30#include <dix-config.h>
31#endif
32
33#include <X11/Xos.h>
34#include "os.h"
35#include <stdarg.h>
36#include <stdio.h>
37
38#ifndef va_copy
39# ifdef __va_copy
40#  define va_copy __va_copy
41# else
42#  error "no working va_copy was found"
43# endif
44#endif
45
46char *
47Xvprintf(const char *format, va_list va)
48{
49    char *ret;
50    int size;
51    va_list va2;
52
53    va_copy(va2, va);
54    size = vsnprintf(NULL, 0, format, va2);
55    va_end(va2);
56
57    ret = (char *)malloc(size + 1);
58    if (ret == NULL)
59        return NULL;
60
61    vsnprintf(ret, size + 1, format, va);
62    ret[size] = 0;
63    return ret;
64}
65
66char *Xprintf(const char *format, ...)
67{
68    char *ret;
69    va_list va;
70    va_start(va, format);
71    ret = Xvprintf(format, va);
72    va_end(va);
73    return ret;
74}
75
76char *
77XNFvprintf(const char *format, va_list va)
78{
79    char *ret;
80    int size;
81    va_list va2;
82
83    va_copy(va2, va);
84    size = vsnprintf(NULL, 0, format, va2);
85    va_end(va2);
86
87    ret = (char *)xnfalloc(size + 1);
88    if (ret == NULL)
89        return NULL;
90
91    vsnprintf(ret, size + 1, format, va);
92    ret[size] = 0;
93    return ret;
94}
95
96char *XNFprintf(const char *format, ...)
97{
98    char *ret;
99    va_list va;
100    va_start(va, format);
101    ret = XNFvprintf(format, va);
102    va_end(va);
103    return ret;
104}
105