1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/* Windows code for gpr snprintf support. */
#include <grpc/support/port_platform.h>
#ifdef GPR_WINDOWS_STRING
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <grpc/support/alloc.h>
#include "src/core/lib/support/string.h"
int gpr_asprintf(char **strp, const char *format, ...) {
va_list args;
int ret;
size_t strp_buflen;
/* Determine the length. */
va_start(args, format);
ret = _vscprintf(format, args);
va_end(args);
if (ret < 0) {
*strp = NULL;
return -1;
}
/* Allocate a new buffer, with space for the NUL terminator. */
strp_buflen = (size_t)ret + 1;
if ((*strp = gpr_malloc(strp_buflen)) == NULL) {
/* This shouldn't happen, because gpr_malloc() calls abort(). */
return -1;
}
/* Print to the buffer. */
va_start(args, format);
ret = vsnprintf_s(*strp, strp_buflen, _TRUNCATE, format, args);
va_end(args);
if ((size_t)ret == strp_buflen - 1) {
return ret;
}
/* This should never happen. */
gpr_free(*strp);
*strp = NULL;
return -1;
}
#endif /* GPR_WINDOWS_STRING */
|
