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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/browser/extensions/settings/settings_storage_quota_enforcer.h" | 5 #include "chrome/browser/extensions/settings/settings_storage_quota_enforcer.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/json/json_writer.h" | 8 #include "base/json/json_writer.h" |
| 9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
| 10 #include "base/message_loop.h" | 10 #include "base/message_loop.h" |
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| 28 void Allocate( | 28 void Allocate( |
| 29 const std::string& key, | 29 const std::string& key, |
| 30 const Value& value, | 30 const Value& value, |
| 31 size_t* used_total, | 31 size_t* used_total, |
| 32 std::map<std::string, size_t>* used_per_setting) { | 32 std::map<std::string, size_t>* used_per_setting) { |
| 33 // Calculate the setting size based on its JSON serialization size. | 33 // Calculate the setting size based on its JSON serialization size. |
| 34 // TODO(kalman): Does this work with different encodings? | 34 // TODO(kalman): Does this work with different encodings? |
| 35 // TODO(kalman): This is duplicating work that the leveldb delegate | 35 // TODO(kalman): This is duplicating work that the leveldb delegate |
| 36 // implementation is about to do, and it would be nice to avoid this. | 36 // implementation is about to do, and it would be nice to avoid this. |
| 37 std::string value_as_json; | 37 std::string value_as_json; |
| 38 base::JSONWriter::Write(&value, false, &value_as_json); | 38 base::JSONWriter::Write(&value, &value_as_json); |
| 39 size_t new_size = key.size() + value_as_json.size(); | 39 size_t new_size = key.size() + value_as_json.size(); |
| 40 size_t existing_size = (*used_per_setting)[key]; | 40 size_t existing_size = (*used_per_setting)[key]; |
| 41 | 41 |
| 42 *used_total += (new_size - existing_size); | 42 *used_total += (new_size - existing_size); |
| 43 (*used_per_setting)[key] = new_size; | 43 (*used_per_setting)[key] = new_size; |
| 44 } | 44 } |
| 45 | 45 |
| 46 // Frees the allocation of a setting in a record of total and per-setting usage. | 46 // Frees the allocation of a setting in a record of total and per-setting usage. |
| 47 void Free( | 47 void Free( |
| 48 size_t* used_total, | 48 size_t* used_total, |
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| 220 return result; | 220 return result; |
| 221 } | 221 } |
| 222 | 222 |
| 223 while (!used_per_setting_.empty()) { | 223 while (!used_per_setting_.empty()) { |
| 224 Free(&used_total_, &used_per_setting_, used_per_setting_.begin()->first); | 224 Free(&used_total_, &used_per_setting_, used_per_setting_.begin()->first); |
| 225 } | 225 } |
| 226 return result; | 226 return result; |
| 227 } | 227 } |
| 228 | 228 |
| 229 } // namespace extensions | 229 } // namespace extensions |
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