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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/**************************************************************************
*
* Copyright 2008-2010 VMware, Inc.
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
/**
* @file
* Malloc string stream implementation.
*/
#include "pipe/p_config.h"
#include "os_memory.h"
#include "os_stream.h"
struct os_str_stream
{
struct os_stream base;
char *str;
size_t size;
size_t written;
};
static INLINE struct os_str_stream *
os_str_stream(struct os_stream *stream)
{
return (struct os_str_stream *)stream;
}
static void
os_str_stream_close(struct os_stream *_stream)
{
struct os_str_stream *stream = os_str_stream(_stream);
os_free(stream->str);
os_free(stream);
}
static boolean
os_str_stream_write(struct os_stream *_stream, const void *data, size_t size)
{
struct os_str_stream *stream = os_str_stream(_stream);
size_t minimum_size;
boolean ret = TRUE;
minimum_size = stream->written + size + 1;
if (stream->size < minimum_size) {
size_t new_size = stream->size;
char * new_str;
do {
new_size *= 2;
} while (new_size < minimum_size);
new_str = os_realloc(stream->str, stream->size, new_size);
if (new_str) {
stream->str = new_str;
stream->size = new_size;
}
else {
size = stream->size - stream->written - 1;
ret = FALSE;
}
}
memcpy(stream->str + stream->written, data, size);
stream->written += size;
return ret;
}
static void
os_str_stream_flush(struct os_stream *stream)
{
(void)stream;
}
struct os_stream *
os_str_stream_create(size_t size)
{
struct os_str_stream *stream;
stream = (struct os_str_stream *)os_calloc(1, sizeof(*stream));
if(!stream)
goto no_stream;
stream->base.close = &os_str_stream_close;
stream->base.write = &os_str_stream_write;
stream->base.flush = &os_str_stream_flush;
stream->base.vprintf = &os_default_stream_vprintf;
stream->str = os_malloc(size);
if(!stream->str)
goto no_str;
stream->size = size;
return &stream->base;
no_str:
os_free(stream);
no_stream:
return NULL;
}
const char *
os_str_stream_get(struct os_stream *_stream)
{
struct os_str_stream *stream = os_str_stream(_stream);
if (!stream)
return NULL;
stream->str[stream->written] = 0;
return stream->str;
}
char *
os_str_stream_get_and_close(struct os_stream *_stream)
{
struct os_str_stream *stream = os_str_stream(_stream);
char *str;
if (!stream)
return NULL;
str = stream->str;
str[stream->written] = 0;
os_free(stream);
return str;
}
|
