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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/>.
*/
#include "phrase_large_table3.h"
namespace pinyin{
/* search method */
int PhraseTableEntry::search(/* out */ PhraseTokens tokens) const {
int result = SEARCH_NONE;
const phrase_token_t * begin = (phrase_token_t *) m_chunk.begin();
const phrase_token_t * end = (phrase_token_t *) m_chunk.end();
const phrase_token_t * iter = NULL;
GArray * array = NULL;
for (iter = begin; iter != end; ++iter) {
phrase_token_t token = *iter;
/* filter out disabled sub phrase indices. */
array = tokens[PHRASE_INDEX_LIBRARY_INDEX(token)];
if (NULL == array)
continue;
result |= SEARCH_OK;
g_array_append_val(array, token);
}
return result;
}
/* add_index/remove_index method */
int PhraseTableEntry::add_index(/* in */ phrase_token_t token) {
const phrase_token_t * begin = (phrase_token_t *) m_chunk.begin();
const phrase_token_t * end = (phrase_token_t *) m_chunk.end();
const phrase_token_t * cur_token;
for (cur_token = begin; cur_token != end; ++cur_token) {
if (*cur_token == token)
return ERROR_INSERT_ITEM_EXISTS;
if (*cur_token > token)
break;
}
int offset = (cur_token - begin) * sizeof(phrase_token_t);
m_chunk.insert_content(offset, &token, sizeof(phrase_token_t));
return ERROR_OK;
}
int PhraseTableEntry::remove_index(/* in */ phrase_token_t token) {
const phrase_token_t * begin = (phrase_token_t *) m_chunk.begin();
const phrase_token_t * end = (phrase_token_t *) m_chunk.end();
const phrase_token_t * cur_token;
for (cur_token = begin; cur_token != end; ++cur_token) {
if (*cur_token == token)
break;
}
if (cur_token == end)
return ERROR_REMOVE_ITEM_DONOT_EXISTS;
int offset = (cur_token - begin) * sizeof(phrase_token_t);
m_chunk.remove_content(offset, sizeof(phrase_token_t));
return ERROR_OK;
}
/* get length method */
int PhraseTableEntry::get_length() const {
const phrase_token_t * begin = (phrase_token_t *) m_chunk.begin();
const phrase_token_t * end = (phrase_token_t *) m_chunk.end();
return end - begin;
}
/* mask out method */
bool PhraseTableEntry::mask_out(phrase_token_t mask, phrase_token_t value) {
const phrase_token_t * begin = (phrase_token_t *) m_chunk.begin();
const phrase_token_t * end = (phrase_token_t *) m_chunk.end();
const phrase_token_t * cur_token;
for (cur_token = begin; cur_token != end; ++cur_token) {
if ((*cur_token & mask) != value)
continue;
int offset = (cur_token - begin) * sizeof(phrase_token_t);
m_chunk.remove_content(offset, sizeof(phrase_token_t));
/* update chunk end. */
end = (phrase_token_t *) m_chunk.end();
--cur_token;
}
return true;
}
/* load text method */
bool PhraseLargeTable3::load_text(FILE * infile){
char pinyin[256];
char phrase[256];
phrase_token_t token;
size_t freq;
while (!feof(infile)) {
int num = fscanf(infile, "%256s %256s %u %ld",
pinyin, phrase, &token, &freq);
if (4 != num)
continue;
if (feof(infile))
break;
glong phrase_len = g_utf8_strlen(phrase, -1);
ucs4_t * new_phrase = g_utf8_to_ucs4(phrase, -1, NULL, NULL, NULL);
add_index(phrase_len, new_phrase, token);
g_free(new_phrase);
}
return true;
}
};
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