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1 /*- | 1 /*- |
2 * Copyright 2003,2004 Colin Percival | 2 * Copyright 2003,2004 Colin Percival |
3 * All rights reserved | 3 * All rights reserved |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted providing that the following conditions | 6 * modification, are permitted providing that the following conditions |
7 * are met: | 7 * are met: |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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27 * 2005-04-26 - Define the header as a C structure, add a CRC32 checksum to | 27 * 2005-04-26 - Define the header as a C structure, add a CRC32 checksum to |
28 * the header, and make all the types 32-bit. | 28 * the header, and make all the types 32-bit. |
29 * --Benjamin Smedberg <benjamin@smedbergs.us> | 29 * --Benjamin Smedberg <benjamin@smedbergs.us> |
30 * 2009-03-31 - Change to use Streams. Move CRC code to crc.{h,cc} | 30 * 2009-03-31 - Change to use Streams. Move CRC code to crc.{h,cc} |
31 * Changed status to an enum, removed unused status codes. | 31 * Changed status to an enum, removed unused status codes. |
32 * --Stephen Adams <sra@chromium.org> | 32 * --Stephen Adams <sra@chromium.org> |
33 * 2013-04-10 - Added wrapper to apply a patch directly to files. | 33 * 2013-04-10 - Added wrapper to apply a patch directly to files. |
34 * --Joshua Pawlicki <waffles@chromium.org> | 34 * --Joshua Pawlicki <waffles@chromium.org> |
35 */ | 35 */ |
36 | 36 |
37 #ifndef COURGETTE_BSDIFF_H_ | 37 #ifndef COURGETTE_BSDIFF_H_ |
huangs
2016/05/13 03:56:47
Should these be modified? I don't know what the co
altimin
2016/05/13 13:16:57
I should have noticed that, sorry.
Done.
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38 #define COURGETTE_BSDIFF_H_ | 38 #define COURGETTE_BSDIFF_H_ |
39 | 39 |
40 #include <stdint.h> | 40 #include <stdint.h> |
41 | 41 |
42 #include "base/files/file_util.h" | 42 #include "base/files/file_util.h" |
43 | 43 |
44 namespace courgette { | 44 namespace courgette { |
45 | 45 |
46 enum BSDiffStatus { | 46 enum BSDiffStatus { |
47 OK = 0, | 47 OK = 0, |
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72 // As above, but simply takes the file paths. | 72 // As above, but simply takes the file paths. |
73 BSDiffStatus ApplyBinaryPatch(const base::FilePath& old_stream, | 73 BSDiffStatus ApplyBinaryPatch(const base::FilePath& old_stream, |
74 const base::FilePath& patch_stream, | 74 const base::FilePath& patch_stream, |
75 const base::FilePath& new_stream); | 75 const base::FilePath& new_stream); |
76 | 76 |
77 // The following declarations are common to the patch-creation and | 77 // The following declarations are common to the patch-creation and |
78 // patch-application code. | 78 // patch-application code. |
79 | 79 |
80 // The patch stream starts with a MBSPatchHeader. | 80 // The patch stream starts with a MBSPatchHeader. |
81 typedef struct MBSPatchHeader_ { | 81 typedef struct MBSPatchHeader_ { |
82 char tag[8]; // Contains MBS_PATCH_HEADER_TAG | 82 char tag[8]; // Contains MBS_PATCH_HEADER_TAG. |
83 uint32_t slen; // Length of the file to be patched. | 83 uint32_t slen; // Length of the file to be patched. |
84 uint32_t scrc32; // CRC32 of the file to be patched. | 84 uint32_t scrc32; // CRC32 of the file to be patched. |
85 uint32_t dlen; // Length of the result file. | 85 uint32_t dlen; // Length of the result file. |
86 } MBSPatchHeader; | 86 } MBSPatchHeader; |
87 | 87 |
88 // This is the value for the tag field. Must match length exactly, not counting | 88 // This is the value for the tag field. Must match length exactly, not counting |
89 // null at end of string. | 89 // null at end of string. |
90 #define MBS_PATCH_HEADER_TAG "GBSDIF42" | 90 #define MBS_PATCH_HEADER_TAG "GBSDIF42" |
91 | 91 |
92 } // namespace | 92 } // namespace |
93 #endif // COURGETTE_BSDIFF_H_ | 93 #endif // COURGETTE_BSDIFF_H_ |
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