1 | // Copyright 2014 Google Inc. |
2 | // All rights reserved. |
3 | // |
4 | // Redistribution and use in source and binary forms, with or without |
5 | // modification, are permitted provided that the following conditions are |
6 | // met: |
7 | // |
8 | // * Redistributions of source code must retain the above copyright |
9 | // notice, this list of conditions and the following disclaimer. |
10 | // * Redistributions in binary form must reproduce the above |
11 | // copyright notice, this list of conditions and the following disclaimer |
12 | // in the documentation and/or other materials provided with the |
13 | // distribution. |
14 | // * Neither the name of Google Inc. nor the names of its |
15 | // contributors may be used to endorse or promote products derived from |
16 | // this software without specific prior written permission. |
17 | // |
18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
20 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
21 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
22 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
23 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
24 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
25 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | |
30 | #ifndef COMMON_LINUX_CRC32_H_ |
31 | #define COMMON_LINUX_CRC32_H_ |
32 | |
33 | #include <stdint.h> |
34 | |
35 | #include <string> |
36 | |
37 | namespace google_breakpad { |
38 | |
39 | // Updates a CRC32 checksum with |len| bytes from |buf|. |initial| holds the |
40 | // checksum result from the previous update; for the first call, it should be 0. |
41 | uint32_t UpdateCrc32(uint32_t initial, const void* buf, size_t len); |
42 | |
43 | // Computes a CRC32 checksum using |len| bytes from |buf|. |
44 | inline uint32_t ComputeCrc32(const void* buf, size_t len) { |
45 | return UpdateCrc32(0, buf, len); |
46 | } |
47 | inline uint32_t ComputeCrc32(const std::string& str) { |
48 | return ComputeCrc32(str.c_str(), str.size()); |
49 | } |
50 | |
51 | } // namespace google_breakpad |
52 | |
53 | #endif // COMMON_LINUX_CRC32_H_ |
54 | |