blob: dee2d219cbe11838928560d21ce6529f4d7785dc (
plain)
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
|
/*
* Copyright (C) 2018 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 "idmap2/BinaryStreamVisitor.h"
#include <algorithm>
#include <cstring>
#include <string>
#include "android-base/macros.h"
namespace android::idmap2 {
void BinaryStreamVisitor::Write16(uint16_t value) {
uint16_t x = htodl(value);
stream_.write(reinterpret_cast<char*>(&x), sizeof(uint16_t));
}
void BinaryStreamVisitor::Write32(uint32_t value) {
uint32_t x = htodl(value);
stream_.write(reinterpret_cast<char*>(&x), sizeof(uint32_t));
}
void BinaryStreamVisitor::WriteString(const StringPiece& value) {
char buf[kIdmapStringLength];
memset(buf, 0, sizeof(buf));
memcpy(buf, value.data(), std::min(value.size(), sizeof(buf)));
stream_.write(buf, sizeof(buf));
}
void BinaryStreamVisitor::visit(const Idmap& idmap ATTRIBUTE_UNUSED) {
// nothing to do
}
void BinaryStreamVisitor::visit(const IdmapHeader& header) {
Write32(header.GetMagic());
Write32(header.GetVersion());
Write32(header.GetTargetCrc());
Write32(header.GetOverlayCrc());
WriteString(header.GetTargetPath());
WriteString(header.GetOverlayPath());
}
void BinaryStreamVisitor::visit(const IdmapData& data ATTRIBUTE_UNUSED) {
// nothing to do
}
void BinaryStreamVisitor::visit(const IdmapData::Header& header) {
Write16(header.GetTargetPackageId());
Write16(header.GetTypeCount());
}
void BinaryStreamVisitor::visit(const IdmapData::TypeEntry& type_entry) {
const uint16_t entryCount = type_entry.GetEntryCount();
Write16(type_entry.GetTargetTypeId());
Write16(type_entry.GetOverlayTypeId());
Write16(entryCount);
Write16(type_entry.GetEntryOffset());
for (uint16_t i = 0; i < entryCount; i++) {
EntryId entry_id = type_entry.GetEntry(i);
Write32(entry_id != kNoEntry ? static_cast<uint32_t>(entry_id) : kPadding);
}
}
} // namespace android::idmap2
|
