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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 "content/renderer/hyphenator/hyphenator.h" | 5 #include "content/renderer/hyphenator/hyphenator.h" |
| 6 | 6 |
| 7 #include "base/file_util.h" | 7 #include "base/file_util.h" |
| 8 #include "base/logging.h" | 8 #include "base/logging.h" |
| 9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
| 10 #include "base/string_util.h" | 10 #include "base/string_util.h" |
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| 177 } | 177 } |
| 178 return !hyphen_offsets->empty(); | 178 return !hyphen_offsets->empty(); |
| 179 } | 179 } |
| 180 | 180 |
| 181 } // namespace | 181 } // namespace |
| 182 | 182 |
| 183 namespace content { | 183 namespace content { |
| 184 | 184 |
| 185 Hyphenator::Hyphenator(base::PlatformFile file) | 185 Hyphenator::Hyphenator(base::PlatformFile file) |
| 186 : dictionary_(NULL), | 186 : dictionary_(NULL), |
| 187 rule_file_(file), | 187 dictionary_file_(base::FdopenPlatformFile(file, "r")), |
| 188 result_(0) { | 188 result_(0) { |
| 189 } | 189 } |
| 190 | 190 |
| 191 Hyphenator::~Hyphenator() { | 191 Hyphenator::~Hyphenator() { |
| 192 if (dictionary_) | 192 if (dictionary_) |
| 193 hnj_hyphen_free(dictionary_); | 193 hnj_hyphen_free(dictionary_); |
| 194 if (rule_file_ != base::kInvalidPlatformFileValue) | |
| 195 base::ClosePlatformFile(rule_file_); | |
| 196 } | 194 } |
| 197 | 195 |
| 198 bool Hyphenator::Initialize() { | 196 bool Hyphenator::Initialize() { |
| 199 if (dictionary_) | 197 if (dictionary_) |
| 200 return true; | 198 return true; |
| 201 | 199 |
| 202 // Attach the dictionary file to the MemoryMappedFile object. When it | 200 if (!dictionary_file_.get()) |
| 203 // succeeds, this class does not have to close this file because it is closed | |
| 204 // by the MemoryMappedFile class. To prevent this class from closing this | |
| 205 // file, we reset its handle. | |
| 206 rule_map_.reset(new file_util::MemoryMappedFile); | |
| 207 if (!rule_map_->Initialize(rule_file_)) | |
| 208 return false; | 201 return false; |
| 209 rule_file_ = base::kInvalidPlatformFileValue; | 202 dictionary_ = hnj_hyphen_load_file(dictionary_file_.get()); |
| 210 | |
| 211 dictionary_ = hnj_hyphen_load(rule_map_->data(), rule_map_->length()); | |
| 212 return !!dictionary_; | 203 return !!dictionary_; |
| 213 } | 204 } |
| 214 | 205 |
| 215 bool Hyphenator::Attach(RenderThread* thread, const string16& locale) { | 206 bool Hyphenator::Attach(RenderThread* thread, const string16& locale) { |
| 216 if (!thread) | 207 if (!thread) |
| 217 return false; | 208 return false; |
| 218 locale_.assign(locale); | 209 locale_.assign(locale); |
| 219 thread->AddObserver(this); | 210 thread->AddObserver(this); |
| 220 return thread->Send(new HyphenatorHostMsg_OpenDictionary(locale)); | 211 return thread->Send(new HyphenatorHostMsg_OpenDictionary(locale)); |
| 221 } | 212 } |
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| 266 // Delete the current dictionary and save the given file to this object. We | 257 // Delete the current dictionary and save the given file to this object. We |
| 267 // initialize the hyphen library the first time when WebKit actually | 258 // initialize the hyphen library the first time when WebKit actually |
| 268 // hyphenates a word, i.e. when WebKit calls the ComputeLastHyphenLocation | 259 // hyphenates a word, i.e. when WebKit calls the ComputeLastHyphenLocation |
| 269 // function. (WebKit does not always hyphenate words even when it calls the | 260 // function. (WebKit does not always hyphenate words even when it calls the |
| 270 // CanHyphenate function, e.g. WebKit does not have to hyphenate words when it | 261 // CanHyphenate function, e.g. WebKit does not have to hyphenate words when it |
| 271 // does not have to break text into lines.) | 262 // does not have to break text into lines.) |
| 272 if (dictionary_) { | 263 if (dictionary_) { |
| 273 hnj_hyphen_free(dictionary_); | 264 hnj_hyphen_free(dictionary_); |
| 274 dictionary_ = NULL; | 265 dictionary_ = NULL; |
| 275 } | 266 } |
| 276 rule_map_.reset(); | 267 dictionary_file_.Set(base::FdopenPlatformFile(rule_file, "r")); |
| 277 rule_file_ = rule_file; | |
| 278 } | 268 } |
| 279 | 269 |
| 280 } // namespace content | 270 } // namespace content |
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