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/*
* libpinyin
* Library to deal with pinyin.
*
* Copyright (C) 2011 Peng Wu <alexepico@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef FACADE_PHRASE_TABLE_H
#define FACADE_PHRASE_TABLE_H
#include "phrase_large_table.h"
namespace pinyin{
/**
* FacadePhraseTable:
*
* The facade class of phrase large table.
*
*/
class FacadePhraseTable{
private:
PhraseLargeTable * m_system_phrase_table;
PhraseLargeTable * m_user_phrase_table;
public:
/**
* FacadePhraseTable::FacadePhraseTable:
*
* The constructor of the FacadePhraseTable.
*
*/
FacadePhraseTable() {
m_system_phrase_table = NULL;
m_user_phrase_table = NULL;
}
/**
* FacadePhraseTable::load:
* @system: the memory chunk of the system phrase table.
* @user: the memory chunk of the user phrase table.
* @returns: whether the load operation is successful.
*
* Load the system or user phrase table from the memory chunks.
*
*/
bool load(MemoryChunk * system, MemoryChunk * user) {
bool result = false;
if (system) {
m_system_phrase_table = new PhraseLargeTable;
result = m_system_phrase_table->load(system) || result;
}
if (user) {
m_user_phrase_table = new PhraseLargeTable;
result = m_user_phrase_table->load(user) || result;
}
return result;
}
/**
* FacadePhraseTable::store:
* @new_user: the memory chunk to store the user phrase table.
* @returns: whether the store operation is successful.
*
* Store the user phrase table to the memory chunk.
*
*/
bool store(MemoryChunk * new_user) {
if (NULL == m_user_phrase_table)
return false;
return m_user_phrase_table->store(new_user);
}
/**
* FacadePhraseTable::search:
* @phrase_length: the length of the phrase to be searched.
* @phrase: the ucs4 characters of the phrase to be searched.
* @token: the token to store the matched phrase.
* @returns: the search result of enum SearchResult.
*
* Search the phrase token according to the ucs4 characters.
*
*/
int search(int phrase_length, /* in */ ucs4_t phrase[],
/* out */ phrase_token_t & token){
int result = SEARCH_NONE;
token = null_token;
if (NULL != m_system_phrase_table)
result |= m_system_phrase_table->search
(phrase_length, phrase, token);
if (NULL != m_user_phrase_table)
result |= m_user_phrase_table->search
(phrase_length, phrase, token);
return result;
}
/**
* FacadePhraseTable::add_index:
* @phrase_length: the length of the phrase to be added.
* @phrase: the ucs4 characters of the phrase to be added.
* @token: the token of the phrase to be added.
* @returns: the add result of enum ErrorResult.
*
* Add the phrase token to the user phrase table.
*
*/
int add_index(int phrase_length, /* in */ ucs4_t phrase[],
/* in */ phrase_token_t token) {
if (NULL == m_user_phrase_table)
return false;
return m_user_phrase_table->add_index
(phrase_length, phrase, token);
}
/**
* FacadePhraseTable::remove_index:
* @phrase_length: the length of the phrase to be removed.
* @phrase: the ucs4 characters of the phrase to be removed.
* @token: the token of the phrase to be removed.
* @returns: the remove result of enum ErrorResult.
*
* Remove the phrase token from the user phrase table.
*
*/
int remove_index(int phrase_length, /* in */ ucs4_t phrase[],
/* out */ phrase_token_t & token){
if (NULL == m_user_phrase_table)
return false;
return m_user_phrase_table->remove_index
(phrase_length, phrase, token);
}
};
};
#endif
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