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 using ::android::StringPiece;
22 using ::google::protobuf::io::ZeroCopyOutputStream;
23
24 namespace aapt {
25 namespace io {
26
CopyInputStreamToArchive(IAaptContext * context,InputStream * in,const std::string & out_path,uint32_t compression_flags,IArchiveWriter * writer)27 bool CopyInputStreamToArchive(IAaptContext* context, InputStream* in, const std::string& out_path,
28 uint32_t compression_flags, IArchiveWriter* writer) {
29 if (context->IsVerbose()) {
30 context->GetDiagnostics()->Note(DiagMessage() << "writing " << out_path << " to archive");
31 }
32
33 if (!writer->WriteFile(out_path, compression_flags, in)) {
34 context->GetDiagnostics()->Error(DiagMessage() << "failed to write " << out_path
35 << " to archive: " << writer->GetError());
36 return false;
37 }
38 return true;
39 }
40
CopyFileToArchive(IAaptContext * context,io::IFile * file,const std::string & out_path,uint32_t compression_flags,IArchiveWriter * writer)41 bool CopyFileToArchive(IAaptContext* context, io::IFile* file, const std::string& out_path,
42 uint32_t compression_flags, IArchiveWriter* writer) {
43 std::unique_ptr<io::IData> data = file->OpenAsData();
44 if (!data) {
45 context->GetDiagnostics()->Error(DiagMessage(file->GetSource()) << "failed to open file");
46 return false;
47 }
48 return CopyInputStreamToArchive(context, data.get(), out_path, compression_flags, writer);
49 }
50
CopyFileToArchivePreserveCompression(IAaptContext * context,io::IFile * file,const std::string & out_path,IArchiveWriter * writer)51 bool CopyFileToArchivePreserveCompression(IAaptContext* context, io::IFile* file,
52 const std::string& out_path, IArchiveWriter* writer) {
53 uint32_t compression_flags = file->WasCompressed() ? ArchiveEntry::kCompress : 0u;
54 return CopyFileToArchive(context, file, out_path, compression_flags, writer);
55 }
56
CopyProtoToArchive(IAaptContext * context,::google::protobuf::MessageLite * proto_msg,const std::string & out_path,uint32_t compression_flags,IArchiveWriter * writer)57 bool CopyProtoToArchive(IAaptContext* context, ::google::protobuf::MessageLite* proto_msg,
58 const std::string& out_path, uint32_t compression_flags,
59 IArchiveWriter* writer) {
60 if (context->IsVerbose()) {
61 context->GetDiagnostics()->Note(DiagMessage() << "writing " << out_path << " to archive");
62 }
63
64 if (writer->StartEntry(out_path, compression_flags)) {
65 // Make sure CopyingOutputStreamAdaptor is deleted before we call writer->FinishEntry().
66 {
67 // Wrap our IArchiveWriter with an adaptor that implements the ZeroCopyOutputStream interface.
68 ::google::protobuf::io::CopyingOutputStreamAdaptor adaptor(writer);
69 if (!proto_msg->SerializeToZeroCopyStream(&adaptor)) {
70 context->GetDiagnostics()->Error(DiagMessage() << "failed to write " << out_path
71 << " to archive");
72 return false;
73 }
74 }
75
76 if (writer->FinishEntry()) {
77 return true;
78 }
79 }
80 context->GetDiagnostics()->Error(DiagMessage() << "failed to write " << out_path
81 << " to archive: " << writer->GetError());
82 return false;
83 }
84
Copy(OutputStream * out,InputStream * in)85 bool Copy(OutputStream* out, InputStream* in) {
86 const void* in_buffer;
87 size_t in_len;
88 while (in->Next(&in_buffer, &in_len)) {
89 void* out_buffer;
90 size_t out_len;
91 if (!out->Next(&out_buffer, &out_len)) {
92 return !out->HadError();
93 }
94
95 const size_t bytes_to_copy = in_len < out_len ? in_len : out_len;
96 memcpy(out_buffer, in_buffer, bytes_to_copy);
97 out->BackUp(out_len - bytes_to_copy);
98 in->BackUp(in_len - bytes_to_copy);
99 }
100 return !in->HadError();
101 }
102
Copy(OutputStream * out,const StringPiece & in)103 bool Copy(OutputStream* out, const StringPiece& in) {
104 const char* in_buffer = in.data();
105 size_t in_len = in.size();
106 while (in_len != 0) {
107 void* out_buffer;
108 size_t out_len;
109 if (!out->Next(&out_buffer, &out_len)) {
110 return false;
111 }
112
113 const size_t bytes_to_copy = in_len < out_len ? in_len : out_len;
114 memcpy(out_buffer, in_buffer, bytes_to_copy);
115 out->BackUp(out_len - bytes_to_copy);
116 in_buffer += bytes_to_copy;
117 in_len -= bytes_to_copy;
118 }
119 return true;
120 }
121
Copy(ZeroCopyOutputStream * out,InputStream * in)122 bool Copy(ZeroCopyOutputStream* out, InputStream* in) {
123 OutputStreamAdaptor adaptor(out);
124 return Copy(&adaptor, in);
125 }
126
127 } // namespace io
128 } // namespace aapt
129