1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "io/Util.h"
18
19 #include "google/protobuf/io/zero_copy_stream_impl_lite.h"
20
21 #include "trace/TraceBuffer.h"
22
23 using ::android::StringPiece;
24 using ::google::protobuf::io::ZeroCopyOutputStream;
25
26 namespace aapt {
27 namespace io {
28
CopyInputStreamToArchive(IAaptContext * context,InputStream * in,std::string_view out_path,uint32_t compression_flags,IArchiveWriter * writer)29 bool CopyInputStreamToArchive(IAaptContext* context, InputStream* in, std::string_view out_path,
30 uint32_t compression_flags, IArchiveWriter* writer) {
31 TRACE_CALL();
32 if (context->IsVerbose()) {
33 context->GetDiagnostics()->Note(android::DiagMessage()
34 << "writing " << out_path << " to archive");
35 }
36
37 if (!writer->WriteFile(out_path, compression_flags, in)) {
38 context->GetDiagnostics()->Error(android::DiagMessage()
39 << "failed to write " << out_path
40 << " to archive: " << writer->GetError());
41 return false;
42 }
43 return true;
44 }
45
CopyFileToArchive(IAaptContext * context,io::IFile * file,std::string_view out_path,uint32_t compression_flags,IArchiveWriter * writer)46 bool CopyFileToArchive(IAaptContext* context, io::IFile* file, std::string_view out_path,
47 uint32_t compression_flags, IArchiveWriter* writer) {
48 TRACE_CALL();
49 std::unique_ptr<io::IData> data = file->OpenAsData();
50 if (!data) {
51 context->GetDiagnostics()->Error(android::DiagMessage(file->GetSource())
52 << "failed to open file");
53 return false;
54 }
55 return CopyInputStreamToArchive(context, data.get(), out_path, compression_flags, writer);
56 }
57
CopyFileToArchivePreserveCompression(IAaptContext * context,io::IFile * file,std::string_view out_path,IArchiveWriter * writer)58 bool CopyFileToArchivePreserveCompression(IAaptContext* context, io::IFile* file,
59 std::string_view out_path, IArchiveWriter* writer) {
60 uint32_t compression_flags = file->WasCompressed() ? ArchiveEntry::kCompress : 0u;
61 return CopyFileToArchive(context, file, out_path, compression_flags, writer);
62 }
63
CopyProtoToArchive(IAaptContext * context,::google::protobuf::Message * proto_msg,std::string_view out_path,uint32_t compression_flags,IArchiveWriter * writer)64 bool CopyProtoToArchive(IAaptContext* context, ::google::protobuf::Message* proto_msg,
65 std::string_view out_path, uint32_t compression_flags,
66 IArchiveWriter* writer) {
67 TRACE_CALL();
68 if (context->IsVerbose()) {
69 context->GetDiagnostics()->Note(android::DiagMessage()
70 << "writing " << out_path << " to archive");
71 }
72
73 if (writer->StartEntry(out_path, compression_flags)) {
74 // Make sure CopyingOutputStreamAdaptor is deleted before we call writer->FinishEntry().
75 {
76 // Wrap our IArchiveWriter with an adaptor that implements the ZeroCopyOutputStream interface.
77 ::google::protobuf::io::CopyingOutputStreamAdaptor adaptor(writer);
78 if (!proto_msg->SerializeToZeroCopyStream(&adaptor)) {
79 context->GetDiagnostics()->Error(android::DiagMessage()
80 << "failed to write " << out_path << " to archive");
81 return false;
82 }
83 }
84
85 if (writer->FinishEntry()) {
86 return true;
87 }
88 }
89 context->GetDiagnostics()->Error(android::DiagMessage() << "failed to write " << out_path
90 << " to archive: " << writer->GetError());
91 return false;
92 }
93
Copy(OutputStream * out,InputStream * in)94 bool Copy(OutputStream* out, InputStream* in) {
95 TRACE_CALL();
96 const void* in_buffer;
97 size_t in_len;
98 while (in->Next(&in_buffer, &in_len)) {
99 void* out_buffer;
100 size_t out_len;
101 if (!out->Next(&out_buffer, &out_len)) {
102 return !out->HadError();
103 }
104
105 const size_t bytes_to_copy = in_len < out_len ? in_len : out_len;
106 memcpy(out_buffer, in_buffer, bytes_to_copy);
107 out->BackUp(out_len - bytes_to_copy);
108 in->BackUp(in_len - bytes_to_copy);
109 }
110 return !in->HadError();
111 }
112
Copy(OutputStream * out,StringPiece in)113 bool Copy(OutputStream* out, StringPiece in) {
114 const char* in_buffer = in.data();
115 size_t in_len = in.size();
116 while (in_len != 0) {
117 void* out_buffer;
118 size_t out_len;
119 if (!out->Next(&out_buffer, &out_len)) {
120 return false;
121 }
122
123 const size_t bytes_to_copy = in_len < out_len ? in_len : out_len;
124 memcpy(out_buffer, in_buffer, bytes_to_copy);
125 out->BackUp(out_len - bytes_to_copy);
126 in_buffer += bytes_to_copy;
127 in_len -= bytes_to_copy;
128 }
129 return true;
130 }
131
Copy(ZeroCopyOutputStream * out,InputStream * in)132 bool Copy(ZeroCopyOutputStream* out, InputStream* in) {
133 OutputStreamAdaptor adaptor(out);
134 return Copy(&adaptor, in);
135 }
136
137 } // namespace io
138 } // namespace aapt
139