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1 // Copyright 2009 Google Inc. | |
2 // | |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 // you may not use this file except in compliance with the License. | |
5 // You may obtain a copy of the License at | |
6 // | |
7 // http://www.apache.org/licenses/LICENSE-2.0 | |
8 // | |
9 // Unless required by applicable law or agreed to in writing, software | |
10 // distributed under the License is distributed on an "AS IS" BASIS, | |
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 // See the License for the specific language governing permissions and | |
13 // limitations under the License. | |
14 // ======================================================================== | |
15 // | |
16 // BCJ encodes a file to increase its compressibility. | |
17 | |
18 #include <windows.h> | |
19 #include <shellapi.h> | |
20 | |
21 #include "base/basictypes.h" | |
22 #include "base/scoped_ptr.h" | |
23 #include "third_party/smartany/scoped_any.h" | |
24 | |
25 extern "C" { | |
26 #include "third_party/lzma/v4_65/files/C/Bra.h" | |
27 } | |
28 | |
29 int wmain(int argc, WCHAR* argv[], WCHAR* env[]) { | |
30 UNREFERENCED_PARAMETER(env); | |
31 | |
32 if (argc < 3) { | |
33 return 1; | |
34 } | |
35 | |
36 // argv[1] is the input file, argv[2] is the output file. | |
37 scoped_hfile file(::CreateFile(argv[1], GENERIC_READ, 0, | |
38 NULL, OPEN_EXISTING, 0, NULL)); | |
39 if (!valid(file)) { | |
40 return 2; | |
41 } | |
42 | |
43 LARGE_INTEGER file_size_data; | |
44 if (!::GetFileSizeEx(get(file), &file_size_data)) { | |
45 return 3; | |
46 } | |
47 | |
48 DWORD file_size = static_cast<DWORD>(file_size_data.QuadPart); | |
49 scoped_array<uint8> buffer(new uint8[file_size]); | |
50 DWORD bytes_read = 0; | |
51 if (!::ReadFile(get(file), buffer.get(), file_size, &bytes_read, NULL) || | |
52 bytes_read != file_size) { | |
53 return 4; | |
54 } | |
55 | |
56 uint32 conversion_state; | |
57 x86_Convert_Init(conversion_state); | |
58 // processed might be less than bytes read. This is apparently OK, although | |
59 // I don't understand why! | |
60 uint32 processed = x86_Convert(buffer.get(), | |
61 bytes_read, | |
62 0, | |
63 &conversion_state, | |
64 1 /* encoding */); | |
65 | |
66 reset(file, ::CreateFile(argv[2], GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, | |
67 NULL)); | |
68 if (!valid(file)) { | |
69 return 6; | |
70 } | |
71 | |
72 DWORD bytes_written = 0; | |
73 if (!::WriteFile(get(file), buffer.get(), bytes_read, &bytes_written, NULL)) { | |
74 return 7; | |
75 } | |
76 | |
77 return 0; | |
78 } | |
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