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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 #include "chromeos/process_proxy/process_output_watcher.h" | 5 #include "chromeos/process_proxy/process_output_watcher.h" |
6 | 6 |
| 7 #include <stddef.h> |
| 8 #include <stdint.h> |
| 9 |
7 #include <algorithm> | 10 #include <algorithm> |
8 #include <cstdio> | 11 #include <cstdio> |
9 #include <cstring> | 12 #include <cstring> |
10 #include "base/bind.h" | 13 #include "base/bind.h" |
11 #include "base/location.h" | 14 #include "base/location.h" |
12 #include "base/logging.h" | 15 #include "base/logging.h" |
13 #include "base/posix/eintr_wrapper.h" | 16 #include "base/posix/eintr_wrapper.h" |
14 #include "base/single_thread_task_runner.h" | 17 #include "base/single_thread_task_runner.h" |
15 #include "base/third_party/icu/icu_utf.h" | 18 #include "base/third_party/icu/icu_utf.h" |
16 #include "base/thread_task_runner_handle.h" | 19 #include "base/thread_task_runner_handle.h" |
17 #include "base/time/time.h" | 20 #include "base/time/time.h" |
18 | 21 |
19 namespace { | 22 namespace { |
20 | 23 |
21 // Gets byte size for a UTF8 character given it's leading byte. The character | 24 // Gets byte size for a UTF8 character given it's leading byte. The character |
22 // size is encoded as number of leading '1' bits in the character's leading | 25 // size is encoded as number of leading '1' bits in the character's leading |
23 // byte. If the most significant bit is '0', the character is a valid ASCII | 26 // byte. If the most significant bit is '0', the character is a valid ASCII |
24 // and it's byte size is 1. | 27 // and it's byte size is 1. |
25 // The method returns 1 if the provided byte is invalid leading byte. | 28 // The method returns 1 if the provided byte is invalid leading byte. |
26 size_t UTF8SizeFromLeadingByte(uint8 leading_byte) { | 29 size_t UTF8SizeFromLeadingByte(uint8_t leading_byte) { |
27 size_t byte_count = 0; | 30 size_t byte_count = 0; |
28 uint8 mask = 1 << 7; | 31 uint8_t mask = 1 << 7; |
29 uint8 error_mask = 1 << (7 - CBU8_MAX_LENGTH); | 32 uint8_t error_mask = 1 << (7 - CBU8_MAX_LENGTH); |
30 while (leading_byte & mask) { | 33 while (leading_byte & mask) { |
31 if (mask & error_mask) | 34 if (mask & error_mask) |
32 return 1; | 35 return 1; |
33 mask >>= 1; | 36 mask >>= 1; |
34 ++byte_count; | 37 ++byte_count; |
35 } | 38 } |
36 return byte_count ? byte_count : 1; | 39 return byte_count ? byte_count : 1; |
37 } | 40 } |
38 | 41 |
39 } // namespace | 42 } // namespace |
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160 // update the buffer size accordingly. | 163 // update the buffer size accordingly. |
161 if (output_to_report < read_buffer_size_) { | 164 if (output_to_report < read_buffer_size_) { |
162 for (size_t i = output_to_report; i < read_buffer_size_; ++i) { | 165 for (size_t i = output_to_report; i < read_buffer_size_; ++i) { |
163 read_buffer_[i - output_to_report] = read_buffer_[i]; | 166 read_buffer_[i - output_to_report] = read_buffer_[i]; |
164 } | 167 } |
165 } | 168 } |
166 read_buffer_size_ -= output_to_report; | 169 read_buffer_size_ -= output_to_report; |
167 } | 170 } |
168 | 171 |
169 } // namespace chromeos | 172 } // namespace chromeos |
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