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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 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 PINYIN_PARSER2_H
#define PINYIN_PARSER2_H
#include <glib.h>
#include "novel_types.h"
#include "chewing_key.h"
#include "pinyin_custom2.h"
namespace pinyin{
typedef struct {
const char * m_pinyin_str;
const char * m_shengmu_str;
const char * m_yunmu_str;
const char * m_zhuyin_str;
const char * m_luoma_pinyin_str;
const char * m_secondary_zhuyin_str;
ChewingKey m_chewing_key;
} content_table_item_t;
typedef struct {
const char * m_pinyin_input;
guint32 m_flags;
guint16 m_table_index;
} pinyin_index_item_t;
typedef struct {
const char * m_chewing_input;
guint32 m_flags;
guint16 m_table_index;
} chewing_index_item_t;
typedef struct {
const char * m_orig_key;
ChewingKey m_orig_struct;
guint32 m_orig_freq;
const char * m_new_keys[2];
ChewingKey m_new_structs[2];
guint32 m_new_freq;
} divided_table_item_t;
typedef struct {
const char * m_orig_keys[2];
ChewingKey m_orig_structs[2];
guint32 m_orig_freq;
const char * m_new_keys[2];
ChewingKey m_new_structs[2];
guint32 m_new_freq;
} resplit_table_item_t;
typedef struct {
const char * m_shengmu;
} double_pinyin_scheme_shengmu_item_t;
typedef struct {
const char * m_yunmus[2];
} double_pinyin_scheme_yunmu_item_t;
typedef struct {
const char * m_input;
const char * m_yunmu;
} double_pinyin_scheme_fallback_item_t;
typedef GArray * ParseValueVector;
/**
* PhoneticParser2:
*
* Parse the ascii string into an array of the struct ChewingKeys.
*
*/
class PhoneticParser2
{
public:
/**
* PhoneticParser2::~PhoneticParser2:
*
* The destructor of the PhoneticParser2.
*
*/
virtual ~PhoneticParser2() {}
public:
/**
* PhoneticParser2::parse_one_key:
* @options: the pinyin options from pinyin_custom2.h.
* @key: the parsed result of struct ChewingKey.
* @str: the input of the ascii string.
* @len: the length of the str.
* @returns: whether the entire string is parsed as one key.
*
* Parse only one struct ChewingKey from a string.
*
*/
virtual bool parse_one_key(pinyin_option_t options, ChewingKey & key, const char *str, int len) const = 0;
/**
* PhoneticParser2::parse:
* @options: the pinyin options from pinyin_custom2.h.
* @keys: the parsed result of struct ChewingKeys.
* @str: the input of the ascii string.
* @len: the length of the str.
* @returns: the number of chars were actually used.
*
* Parse the ascii string into an array of struct ChewingKeys.
*
*/
virtual int parse(pinyin_option_t options, ChewingKeyVector & keys, ChewingKeyRestVector & key_rests, const char *str, int len) const = 0;
};
/**
* FullPinyinParser2:
*
* Parses the full pinyin string into an array of struct ChewingKeys.
*
*/
class FullPinyinParser2 : public PhoneticParser2
{
/* Note: some internal pointers to full pinyin table. */
const pinyin_index_item_t * m_pinyin_index;
size_t m_pinyin_index_len;
protected:
ParseValueVector m_parse_steps;
int final_step(size_t step_len, ChewingKeyVector & keys,
ChewingKeyRestVector & key_rests) const;
public:
FullPinyinParser2();
virtual ~FullPinyinParser2() {
g_array_free(m_parse_steps, TRUE);
}
virtual bool parse_one_key(pinyin_option_t options, ChewingKey & key, const char *str, int len) const;
/* Note:
* the parse method will use dynamic programming to drive parse_one_key.
*/
virtual int parse(pinyin_option_t options, ChewingKeyVector & keys, ChewingKeyRestVector & key_rests, const char *str, int len) const;
public:
bool set_scheme(FullPinyinScheme scheme);
};
/**
* DoublePinyinParser2:
*
* Parse the double pinyin string into an array of struct ChewingKeys.
*
*/
/* The valid input chars of double pinyin is a-z and ';'
*/
class DoublePinyinParser2 : public PhoneticParser2
{
/* Note: three internal pointers to double pinyin scheme table. */
protected:
const double_pinyin_scheme_shengmu_item_t * m_shengmu_table;
const double_pinyin_scheme_yunmu_item_t * m_yunmu_table;
const double_pinyin_scheme_fallback_item_t * m_fallback_table;
public:
DoublePinyinParser2() {
m_shengmu_table = NULL;
m_yunmu_table = NULL;
m_fallback_table = NULL;
set_scheme(DOUBLE_PINYIN_DEFAULT);
}
virtual ~DoublePinyinParser2() {}
virtual bool parse_one_key(pinyin_option_t options, ChewingKey & key, const char *str, int len) const;
virtual int parse(pinyin_option_t options, ChewingKeyVector & keys, ChewingKeyRestVector & key_rests, const char *str, int len) const;
public:
bool set_scheme(DoublePinyinScheme scheme);
};
/* Direct Parser for Pinyin table load. */
class PinyinDirectParser2 : public PhoneticParser2
{
/* Only support Hanyu Pinyin now. */
const pinyin_index_item_t * m_pinyin_index;
size_t m_pinyin_index_len;
public:
PinyinDirectParser2();
virtual ~PinyinDirectParser2() {}
virtual bool parse_one_key(pinyin_option_t options, ChewingKey & key, const char *str, int len) const;
virtual int parse(pinyin_option_t options, ChewingKeyVector & keys, ChewingKeyRestVector & key_rests, const char *str, int len) const;
};
};
#endif
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