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/*
* libpinyin
* Library to deal with pinyin.
*
* Copyright (C) 2016 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef PHONETIC_KEY_MATRIX_H
#define PHONETIC_KEY_MATRIX_H
#include <assert.h>
#include "novel_types.h"
#include "chewing_key.h"
#include "facade_chewing_table2.h"
#include "phrase_index.h"
namespace pinyin {
template<typename Item>
class PhoneticTable {
protected:
/* Pointer Array of Array of Item. */
GPtrArray * m_table_content;
public:
PhoneticTable() {
m_table_content = g_ptr_array_new();
}
~PhoneticTable() {
clear_all();
g_ptr_array_free(m_table_content, TRUE);
m_table_content = NULL;
}
bool clear_all() {
for (size_t i = 0; i < m_table_content->len; ++i) {
GArray * column = (GArray *)
g_ptr_array_index(m_table_content, i);
g_array_free(column, TRUE);
}
g_ptr_array_set_size(m_table_content, 0);
return true;
}
size_t size() const {
return m_table_content->len;
}
/* when call this function,
reserve one extra slot for the end slot. */
bool set_size(size_t size) {
clear_all();
g_ptr_array_set_size(m_table_content, size);
for (size_t i = 0; i < m_table_content->len; ++i) {
g_ptr_array_index(m_table_content, i) =
g_array_new(TRUE, TRUE, sizeof(Item));
}
return true;
}
/* Array of Item. */
bool get_items(size_t index, GArray * items) const {
g_array_set_size(items, 0);
if (index >= m_table_content->len)
return false;
GArray * column = (GArray *)
g_ptr_array_index(m_table_content, index);
g_array_append_vals(items, column->data, column->len);
return true;
}
bool append(size_t index, const Item & item) {
if (index >= m_table_content->len)
return false;
GArray * column = (GArray *)
g_ptr_array_index(m_table_content, index);
g_array_append_val(column, item);
return true;
}
size_t get_column_size(size_t index) const {
assert(index < m_table_content->len);
GArray * column = (GArray *)
g_ptr_array_index(m_table_content, index);
return column->len;
}
bool get_item(size_t index, size_t row, Item & item) const {
assert(index < m_table_content->len);
GArray * column = (GArray *)
g_ptr_array_index(m_table_content, index);
assert(row < column->len);
item = g_array_index(column, Item, row);
return true;
}
};
class PhoneticKeyMatrix {
protected:
PhoneticTable<ChewingKey> m_keys;
PhoneticTable<ChewingKeyRest> m_key_rests;
public:
bool clear_all() {
return m_keys.clear_all() && m_key_rests.clear_all();
}
size_t size() const {
assert(m_keys.size() == m_key_rests.size());
return m_keys.size();
}
/* reserve one extra slot, same as PhoneticTable. */
bool set_size(size_t size) {
return m_keys.set_size(size) && m_key_rests.set_size(size);
}
/* Array of keys and key rests. */
bool get_items(size_t index, GArray * keys, GArray * key_rests) const {
bool result = m_keys.get_items(index, keys) &&
m_key_rests.get_items(index, key_rests);
assert(keys->len == key_rests->len);
return result;
}
bool append(size_t index, const ChewingKey & key,
const ChewingKeyRest & key_rest) {
return m_keys.append(index, key) &&
m_key_rests.append(index, key_rest);
}
size_t get_column_size(size_t index) const {
const size_t size = m_keys.get_column_size(index);
assert(size == m_key_rests.get_column_size(index));
return size;
}
bool get_item(size_t index, size_t row,
ChewingKey & key, ChewingKeyRest & key_rest) const {
return m_keys.get_item(index, row, key) &&
m_key_rests.get_item(index, row, key_rest);
}
};
/**
* fill_matrix:
* Convert ChewingKeyVector and ChewingKeyRestVector
* to PhoneticKeyMatrix.
*/
bool fill_matrix(PhoneticKeyMatrix * matrix,
ChewingKeyVector keys,
ChewingKeyRestVector key_rests,
size_t parsed_len);
/**
* resplit_step:
* For "fa'nan" => "fan'an", add "fan'an" to the matrix for matched "fa'nan".
* Currently only support this feature in Hanyu Pinyin.
*/
bool resplit_step(pinyin_option_t options,
PhoneticKeyMatrix * matrix);
/**
* inner_split_step:
* For "xian" => "xi'an", add "xi'an" to the matrix for matched "xian".
* Currently only support this feature in Hanyu Pinyin.
*/
bool inner_split_step(pinyin_option_t options,
PhoneticKeyMatrix * matrix);
/**
* fuzzy_syllable_step:
* For "an" <=> "ang", fill the fuzzy pinyins into the matrix.
* Supported nearly in all pinyin parsers.
* At most 3 * 2 entries will be added.
*/
bool fuzzy_syllable_step(pinyin_option_t options,
PhoneticKeyMatrix * matrix);
bool dump_matrix(PhoneticKeyMatrix * matrix);
int search_matrix(const FacadeChewingTable2 * table,
const PhoneticKeyMatrix * matrix,
size_t start, size_t end,
PhraseIndexRanges ranges);
gfloat compute_pronunciation_possibility(const PhoneticKeyMatrix * matrix,
size_t start, size_t end,
GArray * cached_keys,
PhraseItem & item);
bool increase_pronunciation_possibility(const PhoneticKeyMatrix * matrix,
size_t start, size_t end,
GArray * cached_keys,
PhraseItem & item, gint32 delta);
};
#endif
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