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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This implementation doesn't use ICU. The ICU macros are oriented towards | 5 // This implementation doesn't use ICU. The ICU macros are oriented towards |
6 // character-at-a-time processing, whereas byte-at-a-time processing is easier | 6 // character-at-a-time processing, whereas byte-at-a-time processing is easier |
7 // with streaming input. | 7 // with streaming input. |
8 | 8 |
9 #include "base/i18n/streaming_utf8_validator.h" | 9 #include "base/i18n/streaming_utf8_validator.h" |
10 | 10 |
11 #include "base/i18n/utf8_validator_tables.h" | 11 #include "base/i18n/utf8_validator_tables.h" |
12 #include "base/logging.h" | 12 #include "base/logging.h" |
13 | 13 |
14 namespace base { | 14 namespace base { |
15 namespace { | 15 namespace { |
16 | 16 |
17 uint8 StateTableLookup(uint8 offset) { | 17 uint8 StateTableLookup(uint8 offset) { |
18 // Skip the bounds check on non-debug builds so that it isn't necessary to set | 18 DCHECK_LT(offset, internal::kUtf8ValidatorTablesSize); |
19 // LOGGING_IS_OFFICIAL_BUILD just to do a performance test. | |
20 if (logging::DEBUG_MODE) | |
21 DCHECK_LT(offset, internal::kUtf8ValidatorTablesSize); | |
22 return internal::kUtf8ValidatorTables[offset]; | 19 return internal::kUtf8ValidatorTables[offset]; |
23 } | 20 } |
24 | 21 |
25 } // namespace | 22 } // namespace |
26 | 23 |
27 StreamingUtf8Validator::State StreamingUtf8Validator::AddBytes(const char* data, | 24 StreamingUtf8Validator::State StreamingUtf8Validator::AddBytes(const char* data, |
28 size_t size) { | 25 size_t size) { |
29 // Copy |state_| into a local variable so that the compiler doesn't have to be | 26 // Copy |state_| into a local variable so that the compiler doesn't have to be |
30 // careful of aliasing. | 27 // careful of aliasing. |
31 uint8 state = state_; | 28 uint8 state = state_; |
(...skipping 21 matching lines...) Expand all Loading... |
53 void StreamingUtf8Validator::Reset() { | 50 void StreamingUtf8Validator::Reset() { |
54 state_ = 0u; | 51 state_ = 0u; |
55 } | 52 } |
56 | 53 |
57 bool StreamingUtf8Validator::Validate(const std::string& string) { | 54 bool StreamingUtf8Validator::Validate(const std::string& string) { |
58 return StreamingUtf8Validator().AddBytes(string.data(), string.size()) == | 55 return StreamingUtf8Validator().AddBytes(string.data(), string.size()) == |
59 VALID_ENDPOINT; | 56 VALID_ENDPOINT; |
60 } | 57 } |
61 | 58 |
62 } // namespace base | 59 } // namespace base |
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