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Side by Side Diff: third_party/libaddressinput/chromium/cpp/src/retriever.h

Issue 137563004: libaddressinput: Add fallback data for US address validation. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: git cl try Created 6 years, 11 months ago
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1 // Copyright (C) 2013 Google Inc. 1 // Copyright (C) 2013 Google Inc.
2 // 2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License. 4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at 5 // You may obtain a copy of the License at
6 // 6 //
7 // http://www.apache.org/licenses/LICENSE-2.0 7 // http://www.apache.org/licenses/LICENSE-2.0
8 // 8 //
9 // Unless required by applicable law or agreed to in writing, software 9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, 10 // distributed under the License is distributed on an "AS IS" BASIS,
(...skipping 14 matching lines...) Expand all
25 #include <string> 25 #include <string>
26 26
27 #include "lookup_key_util.h" 27 #include "lookup_key_util.h"
28 28
29 namespace i18n { 29 namespace i18n {
30 namespace addressinput { 30 namespace addressinput {
31 31
32 class Downloader; 32 class Downloader;
33 class Storage; 33 class Storage;
34 34
35 // Retrieves data. Sample usage: 35 // Manages downloading data and caching it locally. Sample usage:
36 // Storage* storage = ...; 36 // Storage* storage = ...;
37 // Downloader* downloader = ...; 37 // Downloader* downloader = ...;
38 // Retriever retriever("https://i18napis.appspot.com/ssl-address/", 38 // Retriever retriever("https://i18napis.appspot.com/ssl-address/",
39 // downloader, storage); 39 // downloader, storage);
40 // retriever.Retrieve("data/CA/AB--fr", 40 // retriever.Retrieve("data/CA/AB--fr",
41 // BuildCallback(this, &MyClass::OnDataRetrieved)); 41 // BuildCallback(this, &MyClass::OnDataRetrieved));
42 class Retriever { 42 class Retriever {
43 public: 43 public:
44 typedef i18n::addressinput::Callback<std::string, std::string> Callback; 44 typedef i18n::addressinput::Callback<std::string, std::string> Callback;
45 45
46 Retriever(const std::string& validation_data_url, 46 Retriever(const std::string& validation_data_url,
47 scoped_ptr<Downloader> downloader, 47 scoped_ptr<Downloader> downloader,
48 scoped_ptr<Storage> storage); 48 scoped_ptr<Storage> storage);
49 ~Retriever(); 49 ~Retriever();
50 50
51 // Retrieves the data for |key| and invokes the |retrieved| callback. Checks 51 // Retrieves the data for |key| and invokes the |retrieved| callback. Checks
52 // for the data in storage first. If storage does not have the data for |key|, 52 // for the data in storage first. If storage does not have the data for |key|,
53 // then downloads the data and places it in storage. 53 // then downloads the data and places it in storage.
54 void Retrieve(const std::string& key, scoped_ptr<Callback> retrieved); 54 void Retrieve(const std::string& key, scoped_ptr<Callback> retrieved);
55 55
56 private: 56 private:
57 // Callback for when a rule is retrieved from |storage_|. 57 // Callback for when a rule is retrieved from |storage_|.
58 void OnDataRetrievedFromStorage(bool success, 58 void OnDataRetrievedFromStorage(bool success,
59 const std::string& key, 59 const std::string& key,
60 const std::string& data); 60 const std::string& stored_data);
61 61
62 // Callback for when a rule is retrieved by |downloader_|. 62 // Callback for when a rule is retrieved by |downloader_|.
63 void OnDownloaded(bool success, 63 void OnDownloaded(bool success,
64 const std::string& url, 64 const std::string& url,
65 const std::string& data); 65 const std::string& downloaded_data);
66 66
67 // Looks up the callback for |key| in |requests_|, removes it from the map 67 // Looks up the callback for |key| in |requests_|, removes it from the map
68 // and returns it. Assumes that |key| is in fact in |requests_|. 68 // and returns it. Assumes that |key| is in fact in |requests_|.
69 scoped_ptr<Callback> GetCallbackForKey(const std::string& key); 69 scoped_ptr<Callback> GetCallbackForKey(const std::string& key);
70 70
71 const LookupKeyUtil lookup_key_util_; 71 const LookupKeyUtil lookup_key_util_;
72 scoped_ptr<Downloader> downloader_; 72 scoped_ptr<Downloader> downloader_;
73 scoped_ptr<Storage> storage_; 73 scoped_ptr<Storage> storage_;
74 // Holds pending requests. The callback pointers are owned. 74 // Holds pending requests. The callback pointers are owned.
75 std::map<std::string, Callback*> requests_; 75 std::map<std::string, Callback*> requests_;
76 76
77 DISALLOW_COPY_AND_ASSIGN(Retriever); 77 DISALLOW_COPY_AND_ASSIGN(Retriever);
78 }; 78 };
79 79
80 } // namespace addressinput 80 } // namespace addressinput
81 } // namespace i18n 81 } // namespace i18n
82 82
83 #endif // I18N_ADDRESSINPUT_RETRIEVER_H_ 83 #endif // I18N_ADDRESSINPUT_RETRIEVER_H_
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