int main(int argc, char * argv[]){
FILE * input = stdin;
FILE * output = stdout;
setlocale(LC_ALL, "");
GError * error = NULL;
GOptionContext * context;
context = g_option_context_new("- n-gram segment");
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);
}
if (outputfile) {
output = fopen(outputfile, "w");
if (NULL == output) {
perror("open file failed");
exit(EINVAL);
}
}
if (argc > 2) {
fprintf(stderr, "too many arguments.\n");
exit(EINVAL);
}
if (2 == argc) {
input = fopen(argv[1], "r");
if (NULL == input) {
perror("open file failed");
exit(EINVAL);
}
}
SystemTableInfo2 system_table_info;
bool retval = system_table_info.load(SYSTEM_TABLE_INFO);
if (!retval) {
fprintf(stderr, "load table.conf failed.\n");
exit(ENOENT);
}
/* init phrase table */
FacadePhraseTable3 phrase_table;
phrase_table.load(SYSTEM_PHRASE_INDEX, NULL);
/* init phrase index */
FacadePhraseIndex phrase_index;
const pinyin_table_info_t * phrase_files =
system_table_info.get_default_tables();
if (!load_phrase_index(phrase_files, &phrase_index))
exit(ENOENT);
/* init bi-gram */
Bigram system_bigram;
system_bigram.attach(SYSTEM_BIGRAM, ATTACH_READONLY);
Bigram user_bigram;
gfloat lambda = system_table_info.get_lambda();
/* init phrase lookup */
PhraseLookup phrase_lookup(lambda,
&phrase_table, &phrase_index,
&system_bigram, &user_bigram);
CONTEXT_STATE state, next_state;
GArray * current_ucs4 = g_array_new(TRUE, TRUE, sizeof(ucs4_t));
PhraseTokens tokens;
memset(tokens, 0, sizeof(PhraseTokens));
phrase_index.prepare_tokens(tokens);
/* split the sentence */
char * linebuf = NULL; size_t size = 0; ssize_t read;
while( (read = getline(&linebuf, &size, input)) != -1 ){
if ( '\n' == linebuf[strlen(linebuf) - 1] ) {
linebuf[strlen(linebuf) - 1] = '\0';
}
/* check non-ucs4 characters */
const glong num_of_chars = g_utf8_strlen(linebuf, -1);
glong len = 0;
ucs4_t * sentence = g_utf8_to_ucs4(linebuf, -1, NULL, &len, NULL);
if ( len != num_of_chars ) {
fprintf(stderr, "non-ucs4 characters encountered:%s.\n", linebuf);
fprintf(output, "%d \n", null_token);
continue;
}
/* only new-line persists. */
if ( 0 == num_of_chars ) {
fprintf(output, "%d \n", null_token);
continue;
}
state = CONTEXT_INIT;
int result = phrase_table.search( 1, sentence, tokens);
g_array_append_val( current_ucs4, sentence[0]);
if ( result & SEARCH_OK )
state = CONTEXT_SEGMENTABLE;
else
state = CONTEXT_UNKNOWN;
for ( int i = 1; i < num_of_chars; ++i) {
int result = phrase_table.search( 1, sentence + i, tokens);
if ( result & SEARCH_OK )
next_state = CONTEXT_SEGMENTABLE;
else
next_state = CONTEXT_UNKNOWN;
if ( state == next_state ){
g_array_append_val(current_ucs4, sentence[i]);
continue;
}
assert ( state != next_state );
if ( state == CONTEXT_SEGMENTABLE )
deal_with_segmentable(&phrase_lookup, current_ucs4, output);
if ( state == CONTEXT_UNKNOWN )
deal_with_unknown(current_ucs4, output);
/* save the current character */
g_array_set_size(current_ucs4, 0);
g_array_append_val(current_ucs4, sentence[i]);
state = next_state;
}
if ( current_ucs4->len ) {
/* this seems always true. */
if ( state == CONTEXT_SEGMENTABLE )
deal_with_segmentable(&phrase_lookup, current_ucs4, output);
if ( state == CONTEXT_UNKNOWN )
deal_with_unknown(current_ucs4, output);
g_array_set_size(current_ucs4, 0);
}
/* print extra enter */
if ( gen_extra_enter )
fprintf(output, "%d \n", null_token);
g_free(sentence);
}
phrase_index.destroy_tokens(tokens);
/* print enter at file tail */
fprintf(output, "%d \n", null_token);
g_array_free(current_ucs4, TRUE);
free(linebuf);
fclose(input);
fclose(output);
return 0;
}
int main(int argc, char * argv[]){
int i = 1;
bool gen_extra_enter = false;
setlocale(LC_ALL, "");
//deal with options.
while ( i < argc ){
if ( strcmp ("--help", argv[i]) == 0 ){
print_help();
exit(0);
} else if ( strcmp("--generate-extra-enter", argv[i]) == 0 ){
gen_extra_enter = true;
} else {
print_help();
exit(EINVAL);
}
++i;
}
//init phrase table
PhraseLargeTable phrase_table;
MemoryChunk * chunk = new MemoryChunk;
chunk->load("phrase_index.bin");
phrase_table.load(chunk);
//init phrase index
FacadePhraseIndex phrase_index;
chunk = new MemoryChunk;
chunk->load("gb_char.bin");
phrase_index.load(1, chunk);
chunk = new MemoryChunk;
chunk->load("gbk_char.bin");
phrase_index.load(2, chunk);
//init bi-gram
Bigram system_bigram;
system_bigram.attach("bigram.db", ATTACH_READONLY);
Bigram user_bigram;
//init phrase lookup
g_phrase_lookup = new PhraseLookup(&phrase_table, &phrase_index,
&system_bigram, &user_bigram);
CONTEXT_STATE state, next_state;
GArray * current_utf16 = g_array_new(TRUE, TRUE, sizeof(utf16_t));
phrase_token_t token = null_token;
//split the sentence
char * linebuf = NULL;
size_t size = 0;
ssize_t read;
while( (read = getline(&linebuf, &size, stdin)) != -1 ){
if ( '\n' == linebuf[strlen(linebuf) - 1] ) {
linebuf[strlen(linebuf) - 1] = '\0';
}
//check non-ucs2 characters
const glong num_of_chars = g_utf8_strlen(linebuf, -1);
glong len = 0;
utf16_t * sentence = g_utf8_to_utf16(linebuf, -1, NULL, &len, NULL);
if ( len != num_of_chars ) {
fprintf(stderr, "non-ucs2 characters encountered:%s.\n", linebuf);
printf("\n");
continue;
}
/* only new-line persists. */
if ( 0 == num_of_chars ) {
printf("\n");
continue;
}
state = CONTEXT_INIT;
bool result = phrase_table.search( 1, sentence, token);
g_array_append_val( current_utf16, sentence[0]);
if ( result & SEARCH_OK )
state = CONTEXT_SEGMENTABLE;
else
state = CONTEXT_UNKNOWN;
for ( int i = 1; i < num_of_chars; ++i) {
bool result = phrase_table.search( 1, sentence + i, token);
if ( result & SEARCH_OK )
next_state = CONTEXT_SEGMENTABLE;
else
next_state = CONTEXT_UNKNOWN;
if ( state == next_state ){
g_array_append_val(current_utf16, sentence[i]);
continue;
}
assert ( state != next_state );
if ( state == CONTEXT_SEGMENTABLE )
deal_with_segmentable(current_utf16);
if ( state == CONTEXT_UNKNOWN )
deal_with_unknown(current_utf16);
/* save the current character */
g_array_set_size(current_utf16, 0);
g_array_append_val(current_utf16, sentence[i]);
state = next_state;
}
if ( current_utf16->len ) {
/* this seems always true. */
if ( state == CONTEXT_SEGMENTABLE )
deal_with_segmentable(current_utf16);
if ( state == CONTEXT_UNKNOWN )
deal_with_unknown(current_utf16);
g_array_set_size(current_utf16, 0);
}
/* print extra enter */
if ( gen_extra_enter )
printf("\n");
}
delete g_phrase_lookup;
g_phrase_lookup = NULL;
/* print enter at file tail */
printf("\n");
g_array_free(current_utf16, TRUE);
free(linebuf);
return 0;
}