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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 "chrome/renderer/spellchecker/hunspell_engine.h" | 5 #include "chrome/renderer/spellchecker/hunspell_engine.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <iterator> | 8 #include <iterator> |
9 | 9 |
10 #include "base/files/memory_mapped_file.h" | 10 #include "base/files/memory_mapped_file.h" |
11 #include "base/metrics/histogram.h" | |
12 #include "base/time/time.h" | 11 #include "base/time/time.h" |
13 #include "chrome/common/spellcheck_common.h" | 12 #include "chrome/common/spellcheck_common.h" |
14 #include "chrome/common/spellcheck_messages.h" | 13 #include "chrome/common/spellcheck_messages.h" |
15 #include "content/public/renderer/render_thread.h" | 14 #include "content/public/renderer/render_thread.h" |
16 #include "third_party/hunspell/src/hunspell/hunspell.hxx" | 15 #include "third_party/hunspell/src/hunspell/hunspell.hxx" |
17 | 16 |
18 using base::TimeTicks; | |
19 using content::RenderThread; | 17 using content::RenderThread; |
20 | 18 |
21 namespace { | 19 namespace { |
22 // Maximum length of words we actually check. | 20 // Maximum length of words we actually check. |
23 // 64 is the observed limits for OSX system checker. | 21 // 64 is the observed limits for OSX system checker. |
24 const size_t kMaxCheckedLen = 64; | 22 const size_t kMaxCheckedLen = 64; |
25 | 23 |
26 // Maximum length of words we provide suggestions for. | 24 // Maximum length of words we provide suggestions for. |
27 // 24 is the observed limits for OSX system checker. | 25 // 24 is the observed limits for OSX system checker. |
28 const size_t kMaxSuggestLen = 24; | 26 const size_t kMaxSuggestLen = 24; |
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56 // Delay the actual initialization of hunspell until it is needed. | 54 // Delay the actual initialization of hunspell until it is needed. |
57 } | 55 } |
58 | 56 |
59 void HunspellEngine::InitializeHunspell() { | 57 void HunspellEngine::InitializeHunspell() { |
60 if (hunspell_.get()) | 58 if (hunspell_.get()) |
61 return; | 59 return; |
62 | 60 |
63 bdict_file_.reset(new base::MemoryMappedFile); | 61 bdict_file_.reset(new base::MemoryMappedFile); |
64 | 62 |
65 if (bdict_file_->Initialize(file_.Pass())) { | 63 if (bdict_file_->Initialize(file_.Pass())) { |
66 TimeTicks debug_start_time = base::Histogram::DebugNow(); | |
67 | |
68 hunspell_.reset(new Hunspell(bdict_file_->data(), bdict_file_->length())); | 64 hunspell_.reset(new Hunspell(bdict_file_->data(), bdict_file_->length())); |
69 | |
70 DHISTOGRAM_TIMES("Spellcheck.InitTime", | |
71 base::Histogram::DebugNow() - debug_start_time); | |
72 } else { | 65 } else { |
73 NOTREACHED() << "Could not mmap spellchecker dictionary."; | 66 NOTREACHED() << "Could not mmap spellchecker dictionary."; |
74 } | 67 } |
75 } | 68 } |
76 | 69 |
77 bool HunspellEngine::CheckSpelling(const base::string16& word_to_check, | 70 bool HunspellEngine::CheckSpelling(const base::string16& word_to_check, |
78 int tag) { | 71 int tag) { |
79 // Assume all words that cannot be checked are valid. Since Chrome can't | 72 // Assume all words that cannot be checked are valid. Since Chrome can't |
80 // offer suggestions on them, either, there's no point in flagging them to | 73 // offer suggestions on them, either, there's no point in flagging them to |
81 // the user. | 74 // the user. |
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134 // Don't initialize if hunspell is disabled. | 127 // Don't initialize if hunspell is disabled. |
135 if (file_.IsValid()) | 128 if (file_.IsValid()) |
136 InitializeHunspell(); | 129 InitializeHunspell(); |
137 | 130 |
138 return !initialized_; | 131 return !initialized_; |
139 } | 132 } |
140 | 133 |
141 bool HunspellEngine::IsEnabled() { | 134 bool HunspellEngine::IsEnabled() { |
142 return hunspell_enabled_; | 135 return hunspell_enabled_; |
143 } | 136 } |
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