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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_CHEWING_TABLE_H
#define FACADE_CHEWING_TABLE_H
#include "novel_types.h"
#include "chewing_large_table.h"
namespace pinyin{
/**
* FacadeChewingTable:
*
* The facade class of chewing large table.
*
*/
class FacadeChewingTable{
private:
ChewingLargeTable * m_system_chewing_table;
ChewingLargeTable * m_user_chewing_table;
void reset() {
if (m_system_chewing_table) {
delete m_system_chewing_table;
m_system_chewing_table = NULL;
}
if (m_user_chewing_table) {
delete m_user_chewing_table;
m_user_chewing_table = NULL;
}
}
public:
/**
* FacadeChewingTable::FacadeChewingTable:
*
* The constructor of the FacadeChewingTable.
*
*/
FacadeChewingTable() {
m_system_chewing_table = NULL;
m_user_chewing_table = NULL;
}
/**
* FacadeChewingTable::~FacadeChewingTable:
*
* The destructor of the FacadeChewingTable.
*
*/
~FacadeChewingTable() {
reset();
}
/**
* FacadeChewingTable::set_options:
* @options: the pinyin options.
* @returns: whether the setting options is successful.
*
* Set the options of the system and user chewing table.
*
*/
bool set_options(pinyin_option_t options) {
bool result = false;
if (m_system_chewing_table)
result = m_system_chewing_table->set_options(options) || result;
if (m_user_chewing_table)
result = m_user_chewing_table->set_options(options) || result;
return result;
}
/**
* FacadeChewingTable::load:
* @options: the pinyin options.
* @system: the memory chunk of the system chewing table.
* @user: the memory chunk of the user chewing table.
* @returns: whether the load operation is successful.
*
* Load the system or user chewing table from the memory chunks.
*
*/
bool load(pinyin_option_t options, MemoryChunk * system,
MemoryChunk * user){
reset();
bool result = false;
if (system) {
m_system_chewing_table = new ChewingLargeTable(options);
result = m_system_chewing_table->load(system) || result;
}
if (user) {
m_user_chewing_table = new ChewingLargeTable(options);
result = m_user_chewing_table->load(user) || result;
}
return result;
}
/**
* FacadeChewingTable::store:
* @new_user: the memory chunk to store the user chewing table.
* @returns: whether the store operation is successful.
*
* Store the user chewing table to the memory chunk.
*
*/
bool store(MemoryChunk * new_user) {
if (NULL == m_user_chewing_table)
return false;
return m_user_chewing_table->store(new_user);
}
/**
* FacadeChewingTable::search:
* @phrase_length: the length of the phrase to be searched.
* @keys: the pinyin key of the phrase to be searched.
* @ranges: the array of GArrays to store the matched phrase token.
* @returns: the search result of enum SearchResult.
*
* Search the phrase tokens according to the pinyin keys.
*
*/
int search(int phrase_length, /* in */ ChewingKey keys[],
/* out */ PhraseIndexRanges ranges) const {
/* clear ranges. */
for (size_t i = 0; i < PHRASE_INDEX_LIBRARY_COUNT; ++i) {
if (ranges[i])
g_array_set_size(ranges[i], 0);
}
int result = SEARCH_NONE;
if (NULL != m_system_chewing_table)
result |= m_system_chewing_table->search
(phrase_length, keys, ranges);
if (NULL != m_user_chewing_table)
result |= m_user_chewing_table->search
(phrase_length, keys, ranges);
return result;
}
/**
* FacadeChewingTable::add_index:
* @phrase_length: the length of the phrase to be added.
* @keys: the pinyin keys 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 chewing table.
*
*/
int add_index(int phrase_length, /* in */ ChewingKey keys[],
/* in */ phrase_token_t token) {
if (NULL == m_user_chewing_table)
return false;
return m_user_chewing_table->add_index(phrase_length, keys, token);
}
/**
* FacadeChewingTable::remove_index:
* @phrase_length: the length of the phrase to be removed.
* @keys: the pinyin keys 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 chewing table.
*
*/
int remove_index(int phrase_length, /* in */ ChewingKey keys[],
/* in */ phrase_token_t token) {
if (NULL == m_user_chewing_table)
return false;
return m_user_chewing_table->remove_index(phrase_length, keys, token);
}
};
};
#endif
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