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/*
* libpinyin
* Library to deal with pinyin.
*
* Copyright (C) 2010 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <assert.h>
#include <glib.h>
#include "pinyin_internal.h"
#include "utils_helper.h"
/* export interpolation model as textual format */
bool gen_unigram(FILE * output, FacadePhraseIndex * phrase_index);
bool gen_bigram(FILE * output, FacadePhraseIndex * phrase_index, Bigram * bigram);
bool begin_data(FILE * output){
fprintf(output, "\\data model interpolation\n");
return true;
}
bool end_data(FILE * output){
fprintf(output, "\\end\n");
return true;
}
int main(int argc, char * argv[]){
FILE * output = stdout;
const char * bigram_filename = "bigram.db";
MemoryChunk * chunk = NULL;
FacadePhraseIndex phrase_index;
if (!load_phrase_index(&phrase_index))
exit(ENOENT);
Bigram bigram;
bigram.attach(bigram_filename, ATTACH_READONLY);
begin_data(output);
gen_unigram(output, &phrase_index);
gen_bigram(output, &phrase_index, &bigram);
end_data(output);
return 0;
}
bool gen_unigram(FILE * output, FacadePhraseIndex * phrase_index) {
fprintf(output, "\\1-gram\n");
for ( size_t i = 0; i < PHRASE_INDEX_LIBRARY_COUNT; i++) {
PhraseIndexRange range;
int result = phrase_index->get_range(i, range);
if (ERROR_OK != result )
continue;
PhraseItem item;
for ( size_t j = range.m_range_begin; j < range.m_range_end; j++) {
int result = phrase_index->get_phrase_item(j, item);
if ( result == ERROR_NO_ITEM )
continue;
assert( result == ERROR_OK);
size_t freq = item.get_unigram_frequency();
if ( 0 == freq )
continue;
char * phrase = taglib_token_to_string(phrase_index, j);
if ( phrase )
fprintf(output, "\\item %s count %ld\n", phrase, freq);
g_free(phrase);
}
}
return true;
}
bool gen_bigram(FILE * output, FacadePhraseIndex * phrase_index, Bigram * bigram){
fprintf(output, "\\2-gram\n");
/* Retrieve all user items. */
GArray * items = g_array_new(FALSE, FALSE, sizeof(phrase_token_t));
bigram->get_all_items(items);
PhraseItem item;
for(size_t i = 0; i < items->len; i++){
phrase_token_t token = g_array_index(items, phrase_token_t, i);
SingleGram * single_gram = NULL;
bigram->load(token, single_gram);
BigramPhraseWithCountArray array = g_array_new(FALSE, FALSE, sizeof(BigramPhraseItemWithCount));
single_gram->retrieve_all(array);
for(size_t j = 0; j < array->len; j++) {
BigramPhraseItemWithCount * item = &g_array_index(array, BigramPhraseItemWithCount, j);
char * word1 = taglib_token_to_string(phrase_index, token);
char * word2 = taglib_token_to_string(phrase_index, item->m_token);
guint32 freq = item->m_count;
if ( word1 && word2)
fprintf(output, "\\item %s %s count %d\n", word1, word2, freq);
g_free(word1); g_free(word2);
}
g_array_free(array, TRUE);
}
g_array_free(items, TRUE);
return true;
}
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