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
|
/*
* Copyright 2012, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "Parameters.h"
#include <media/stagefright/MediaErrors.h>
namespace android {
// static
sp<Parameters> Parameters::Parse(const char *data, size_t size) {
sp<Parameters> params = new Parameters;
status_t err = params->parse(data, size);
if (err != OK) {
return NULL;
}
return params;
}
Parameters::Parameters() {}
Parameters::~Parameters() {}
status_t Parameters::parse(const char *data, size_t size) {
size_t i = 0;
while (i < size) {
size_t nameStart = i;
while (i < size && data[i] != ':') {
++i;
}
if (i == size || i == nameStart) {
return ERROR_MALFORMED;
}
AString name(&data[nameStart], i - nameStart);
name.trim();
name.tolower();
++i;
size_t valueStart = i;
while (i + 1 < size && (data[i] != '\r' || data[i + 1] != '\n')) {
++i;
}
AString value(&data[valueStart], i - valueStart);
value.trim();
mDict.add(name, value);
while (i + 1 < size && data[i] == '\r' && data[i + 1] == '\n') {
i += 2;
}
}
return OK;
}
bool Parameters::findParameter(const char *name, AString *value) const {
AString key = name;
key.tolower();
ssize_t index = mDict.indexOfKey(key);
if (index < 0) {
value->clear();
return false;
}
*value = mDict.valueAt(index);
return true;
}
} // namespace android
|
