| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
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| // distribution. |
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| // this software without specific prior written permission. |
| // |
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| |
| #ifndef MOZC_DICTIONARY_TEXT_DICTIONARY_LOADER_H_ |
| #define MOZC_DICTIONARY_TEXT_DICTIONARY_LOADER_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/port.h" |
| #include "base/string_piece.h" |
| #include "testing/base/public/gunit_prod.h" |
| // for FRIEND_TEST |
| |
| namespace mozc { |
| namespace dictionary { |
| |
| struct Token; |
| class POSMatcher; |
| |
| class TextDictionaryLoader { |
| public: |
| // TODO(noriyukit): Better to pass the pointer of pos_matcher. |
| explicit TextDictionaryLoader(const POSMatcher& pos_matcher); |
| virtual ~TextDictionaryLoader(); |
| |
| // Loads tokens from system dictionary files and reading correction |
| // files. Each file name can take multiple file names by separating commas. |
| // The reading correction file is optional and can be an empty string. Note |
| // that the tokens loaded so far are all cleared and that this class takes the |
| // ownership of the loaded tokens, i.e., they are deleted on destruction of |
| // this loader instance. |
| void Load(const string &dictionary_filename, |
| const string &reading_correction_filename); |
| |
| // The same as Load() method above except that the number of tokens to be |
| // loaded is limited up to first |limit| entries. |
| void LoadWithLineLimit(const string &dictionary_filename, |
| const string &reading_correction_filename, |
| int limit); |
| |
| // Clears the loaded tokens. |
| void Clear(); |
| |
| // Adds a token. The ownership is taken by the loader. |
| void AddToken(Token *token) { |
| tokens_.push_back(token); |
| } |
| |
| const vector<Token *> &tokens() const { |
| return tokens_; |
| } |
| |
| // Appends the tokens owned by this instance to |res|. Note that the appended |
| // tokens are still owned by this instance and deleted on destruction of this |
| // instance or when Clear() is called. |
| void CollectTokens(vector<Token *> *res) const; |
| |
| protected: |
| // Allows derived classes to implement custom filtering rules. |
| virtual Token *ParseTSV(const vector<StringPiece> &columns) const; |
| |
| const POSMatcher *pos_matcher_; |
| |
| private: |
| static void LoadReadingCorrectionTokens( |
| const string &reading_correction_filename, |
| const vector<Token *> &ref_sorted_tokens, |
| int *limit, vector<Token *> *tokens); |
| |
| // Encodes special information into |token| with the |label|. |
| // Currently, label must be: |
| // - empty string, |
| // - "SPELLING_CORRECITON", |
| // - "ZIP_CODE", or |
| // - "ENGLISH". |
| // Otherwise, the method returns false. |
| bool RewriteSpecialToken(Token *token, StringPiece label) const; |
| |
| Token *ParseTSVLine(StringPiece line) const; |
| |
| vector<Token *> tokens_; |
| |
| FRIEND_TEST(TextDictionaryLoaderTest, RewriteSpecialTokenTest); |
| }; |
| |
| } // namespace dictionary |
| } // namespace mozc |
| |
| #endif // MOZC_DICTIONARY_TEXT_DICTIONARY_LOADER_H_ |