diff options
Diffstat (limited to 'utils/storage/import_interpolation.cpp')
| -rw-r--r-- | utils/storage/import_interpolation.cpp | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/utils/storage/import_interpolation.cpp b/utils/storage/import_interpolation.cpp new file mode 100644 index 0000000..205a27a --- /dev/null +++ b/utils/storage/import_interpolation.cpp @@ -0,0 +1,313 @@ +/* + * 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 <locale.h> +#include <glib.h> +#include "pinyin_internal.h" +#include "utils_helper.h" + + +static const gchar * table_dir = "."; + +static GOptionEntry entries[] = +{ + {"table-dir", 0, 0, G_OPTION_ARG_FILENAME, &table_dir, "table directory", NULL}, + {NULL} +}; + + +enum LINE_TYPE{ + BEGIN_LINE = 1, + END_LINE, + GRAM_1_LINE, + GRAM_2_LINE, + GRAM_1_ITEM_LINE, + GRAM_2_ITEM_LINE +}; + +static int line_type = 0; +static GPtrArray * values = NULL; +static GHashTable * required = NULL; +/* variables for line buffer. */ +static char * linebuf = NULL; +static size_t len = 0; + +bool parse_headline(); + +bool parse_unigram(FILE * input, PhraseLargeTable2 * phrase_table, + FacadePhraseIndex * phrase_index); + +bool parse_bigram(FILE * input, PhraseLargeTable2 * phrase_table, + FacadePhraseIndex * phrase_index, + Bigram * bigram); + +static ssize_t my_getline(FILE * input){ + ssize_t result = getline(&linebuf, &len, input); + if ( result == -1 ) + return result; + + if ( '\n' == linebuf[strlen(linebuf) - 1] ) { + linebuf[strlen(linebuf) - 1] = '\0'; + } + return result; +} + +bool parse_headline(){ + /* enter "\data" line */ + assert(taglib_add_tag(BEGIN_LINE, "\\data", 0, "model", "")); + + /* read "\data" line */ + if ( !taglib_read(linebuf, line_type, values, required) ) { + fprintf(stderr, "error: interpolation model expected.\n"); + return false; + } + + assert(line_type == BEGIN_LINE); + /* check header */ + TAGLIB_GET_TAGVALUE(const char *, model, (const char *)); + if ( !( strcmp("interpolation", model) == 0 ) ) { + fprintf(stderr, "error: interpolation model expected.\n"); + return false; + } + return true; +} + +bool parse_body(FILE * input, PhraseLargeTable2 * phrase_table, + FacadePhraseIndex * phrase_index, + Bigram * bigram){ + taglib_push_state(); + + assert(taglib_add_tag(END_LINE, "\\end", 0, "", "")); + assert(taglib_add_tag(GRAM_1_LINE, "\\1-gram", 0, "", "")); + assert(taglib_add_tag(GRAM_2_LINE, "\\2-gram", 0, "", "")); + + do { + retry: + assert(taglib_read(linebuf, line_type, values, required)); + switch(line_type) { + case END_LINE: + goto end; + case GRAM_1_LINE: + my_getline(input); + parse_unigram(input, phrase_table, phrase_index); + goto retry; + case GRAM_2_LINE: + my_getline(input); + parse_bigram(input, phrase_table, phrase_index, bigram); + goto retry; + default: + assert(false); + } + } while (my_getline(input) != -1) ; + + end: + taglib_pop_state(); + return true; +} + +bool parse_unigram(FILE * input, PhraseLargeTable2 * phrase_table, + FacadePhraseIndex * phrase_index){ + taglib_push_state(); + + assert(taglib_add_tag(GRAM_1_ITEM_LINE, "\\item", 2, "count", "")); + + do { + assert(taglib_read(linebuf, line_type, values, required)); + switch (line_type) { + case GRAM_1_ITEM_LINE:{ + /* handle \item in \1-gram */ + TAGLIB_GET_TOKEN(token, 0); + TAGLIB_GET_PHRASE_STRING(word, 1); + assert(taglib_validate_token_with_string + (phrase_index, token, word)); + + TAGLIB_GET_TAGVALUE(glong, count, atol); + phrase_index->add_unigram_frequency(token, count); + break; + } + case END_LINE: + case GRAM_1_LINE: + case GRAM_2_LINE: + goto end; + default: + assert(false); + } + } while (my_getline(input) != -1); + + end: + taglib_pop_state(); + return true; +} + +bool parse_bigram(FILE * input, PhraseLargeTable2 * phrase_table, + FacadePhraseIndex * phrase_index, + Bigram * bigram){ + taglib_push_state(); + + assert(taglib_add_tag(GRAM_2_ITEM_LINE, "\\item", 4, "count", "")); + + phrase_token_t last_token = 0; SingleGram * last_single_gram = NULL; + do { + assert(taglib_read(linebuf, line_type, values, required)); + switch (line_type) { + case GRAM_2_ITEM_LINE:{ + /* handle \item in \2-gram */ + /* two tokens */ + TAGLIB_GET_TOKEN(token1, 0); + TAGLIB_GET_PHRASE_STRING(word1, 1); + assert(taglib_validate_token_with_string + (phrase_index, token1, word1)); + + TAGLIB_GET_TOKEN(token2, 2); + TAGLIB_GET_PHRASE_STRING(word2, 3); + assert(taglib_validate_token_with_string + (phrase_index, token2, word2)); + + TAGLIB_GET_TAGVALUE(glong, count, atol); + + if ( last_token != token1 ) { + if ( last_token && last_single_gram ) { + bigram->store(last_token, last_single_gram); + delete last_single_gram; + + /* safe guard */ + last_token = null_token; + last_single_gram = NULL; + } + SingleGram * single_gram = NULL; + bigram->load(token1, single_gram); + + /* create the new single gram */ + if ( single_gram == NULL ) + single_gram = new SingleGram; + last_token = token1; + last_single_gram = single_gram; + } + + /* save the freq */ + assert(NULL != last_single_gram); + guint32 total_freq = 0; + assert(last_single_gram->get_total_freq(total_freq)); + assert(last_single_gram->insert_freq(token2, count)); + total_freq += count; + assert(last_single_gram->set_total_freq(total_freq)); + break; + } + case END_LINE: + case GRAM_1_LINE: + case GRAM_2_LINE: + goto end; + default: + assert(false); + } + } while (my_getline(input) != -1); + + end: + if ( last_token && last_single_gram ) { + bigram->store(last_token, last_single_gram); + delete last_single_gram; + //safe guard + last_token = 0; + last_single_gram = NULL; + } + + taglib_pop_state(); + return true; +} + +int main(int argc, char * argv[]){ + FILE * input = stdin; + const char * bigram_filename = SYSTEM_BIGRAM; + + setlocale(LC_ALL, ""); + + GError * error = NULL; + GOptionContext * context; + + context = g_option_context_new("- import interpolation model"); + g_option_context_add_main_entries(context, entries, NULL); + if (!g_option_context_parse(context, &argc, &argv, &error)) { + g_print("option parsing failed:%s\n", error->message); + exit(EINVAL); + } + + SystemTableInfo system_table_info; + + gchar * filename = g_build_filename(table_dir, SYSTEM_TABLE_INFO, NULL); + bool retval = system_table_info.load(filename); + if (!retval) { + fprintf(stderr, "load table.conf failed.\n"); + exit(ENOENT); + } + g_free(filename); + + PhraseLargeTable2 phrase_table; + + MemoryChunk * chunk = new MemoryChunk; + retval = chunk->load(SYSTEM_PHRASE_INDEX); + if (!retval) { + fprintf(stderr, "open phrase_index.bin failed!\n"); + exit(ENOENT); + } + phrase_table.load(chunk); + + FacadePhraseIndex phrase_index; + + const pinyin_table_info_t * phrase_files = + system_table_info.get_table_info(); + + if (!load_phrase_index(phrase_files, &phrase_index)) + exit(ENOENT); + + Bigram bigram; + retval = bigram.attach(bigram_filename, ATTACH_CREATE|ATTACH_READWRITE); + if (!retval) { + fprintf(stderr, "open %s failed!\n", bigram_filename); + exit(ENOENT); + } + + taglib_init(); + + values = g_ptr_array_new(); + required = g_hash_table_new(g_str_hash, g_str_equal); + + /* read first line */ + ssize_t result = my_getline(input); + if ( result == -1 ) { + fprintf(stderr, "empty file input.\n"); + exit(ENODATA); + } + + if (!parse_headline()) + exit(ENODATA); + + result = my_getline(input); + if ( result != -1 ) + parse_body(input, &phrase_table, &phrase_index, &bigram); + + taglib_fini(); + + if (!save_phrase_index(phrase_files, &phrase_index)) + exit(ENOENT); + + return 0; +} |