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/*
* libpinyin
* Library to deal with pinyin.
*
* Copyright (C) 2006-2007 Peng Wu
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef PINYIN_LARGE_TABLE_H
#define PINYIN_LARGE_TABLE_H
#include <stdio.h>
#include "novel_types.h"
#include "memory_chunk.h"
namespace pinyin{
/* Because this is not large,
* Store this in user home directory.
*/
class PinyinLengthIndexLevel;
class PinyinBitmapIndexLevel{
PinyinCustomSettings * m_custom;
protected:
PinyinLengthIndexLevel * m_pinyin_length_indexes[PINYIN_Number_Of_Initials]
[PINYIN_Number_Of_Finals]
[PINYIN_Number_Of_Tones];
//search function
int initial_level_search(int word_length, /* in */PinyinKey keys[],
/* out */ PhraseIndexRanges ranges) const;
int final_level_search(PinyinInitial initial, int word_length, /* in */PinyinKey keys[], /* out */ PhraseIndexRanges ranges) const;
int tone_level_search(PinyinInitial initial, PinyinFinal final, int word_length, /* in */PinyinKey keys[], /* out */ PhraseIndexRanges ranges) const;
void reset();
public:
PinyinBitmapIndexLevel(PinyinCustomSettings * custom);
~PinyinBitmapIndexLevel(){
reset();
}
bool load(MemoryChunk * chunk, table_offset_t offset, table_offset_t end);
bool store(MemoryChunk * new_chunk, table_offset_t offset, table_offset_t & end);
/*bool load_text(FILE * file);*/
/*bool save_text(FILE * file);*/
/*search/add_index method */
int search( int phrase_length, /* in */ PinyinKey keys[],
/* out */ PhraseIndexRanges ranges) const;
int add_index( int phrase_length, /* in */ PinyinKey keys[], /* in */ phrase_token_t token);
int remove_index( int phrase_length, /* in */ PinyinKey keys[], /* in */ phrase_token_t token);
};
/* TODO: add file version check */
class PinyinLargeTable{
protected:
PinyinBitmapIndexLevel m_bitmap_table;
MemoryChunk * m_chunk;
void reset(){
if ( m_chunk ){
delete m_chunk;
m_chunk = NULL;
}
}
public:
PinyinLargeTable(PinyinCustomSettings * custom):
m_bitmap_table(custom){
m_chunk = NULL;
}
~PinyinLargeTable(){
reset();
}
/* load/store method */
bool load(MemoryChunk * chunk){
reset();
m_chunk = chunk;
return m_bitmap_table.load(chunk, 0, chunk->size());
}
bool store(MemoryChunk * new_chunk){
table_offset_t end;
return m_bitmap_table.store(new_chunk, 0, end);
}
bool load_text(FILE * file);
/*
bool save_text(FILE * file){
return m_bitmap_table.save_text(file);
}
*/
/* search/add_index/remove_index method */
int search( int phrase_length, /* in */ PinyinKey keys[],
/* out */ PhraseIndexRanges ranges){
return m_bitmap_table.search(phrase_length, keys, ranges);
}
int add_index( int phrase_length, /* in */ PinyinKey keys[], /* in */ phrase_token_t token){
return m_bitmap_table.add_index(phrase_length, keys, token);
}
int remove_index( int phrase_length, /* in */ PinyinKey keys[], /* in */ phrase_token_t token){
return m_bitmap_table.remove_index(phrase_length, keys, token);
}
bool has_key(PinyinKey key) const {
PhraseIndexRanges ranges;
memset(ranges, 0, sizeof(ranges));
ranges[1] = g_array_new(FALSE, FALSE, sizeof(PhraseIndexRange));
int result = m_bitmap_table.search(1, &key, ranges);
g_array_free(ranges[1], TRUE);
ranges[1] = NULL;
return result & SEARCH_OK;
}
};
};
#endif
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