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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
/**
*
*
*
*
* TODO
* - Add exception throwing when h == NULL
* - Not init h when implicit constructor is launched
*/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_lingucomponent.hxx"
#include <string.h>
#include <sstream>
#include <iostream>
#include <libtextcat/textcat.h>
#include <libtextcat/common.h>
#include <libtextcat/constants.h>
#include <libtextcat/fingerprint.h>
#include <libtextcat/utf8misc.h>
#include <sal/types.h>
#include "altstrfunc.hxx"
#include "simpleguesser.hxx"
#ifndef _UTF8_
#define _UTF8_
#endif
using namespace std;
/**
* This 3 following structures are from fingerprint.c and textcat.c
*/
typedef struct ngram_t {
sint2 rank;
char str[MAXNGRAMSIZE+1];
} ngram_t;
typedef struct fp_t {
const char *name;
ngram_t *fprint;
uint4 size;
} fp_t;
typedef struct textcat_t{
void **fprint;
char *fprint_disable;
uint4 size;
uint4 maxsize;
char output[MAXOUTPUTSIZE];
} textcat_t;
/** end of the 3 structs */
SimpleGuesser::SimpleGuesser()
{
h = NULL;
}
void SimpleGuesser::operator=(SimpleGuesser& sg){
if(h){textcat_Done(h);}
h = sg.h;
}
SimpleGuesser::~SimpleGuesser()
{
if(h){textcat_Done(h);}
}
/*!
\fn SimpleGuesser::GuessLanguage(char* text)
*/
vector<Guess> SimpleGuesser::GuessLanguage(char* text)
{
vector<Guess> guesses;
if(!h){return guesses;}
//calculate le number of unicode charcters (symbols)
int len = utfstrlen(text);
if( len > MAX_STRING_LENGTH_TO_ANALYSE ){len = MAX_STRING_LENGTH_TO_ANALYSE ;}
char *guess_list = textcat_Classify(h, text, len);
if(strcmp(guess_list, _TEXTCAT_RESULT_SHORT) == 0){
return guesses;
}
int current_pointer = 0;
for(int i = 0; guess_list[current_pointer] != '\0'; i++)
{
while(guess_list[current_pointer] != GUESS_SEPARATOR_OPEN && guess_list[current_pointer] != '\0'){
current_pointer++;
}
if(guess_list[current_pointer] != '\0')
{
Guess g((char*)(guess_list + current_pointer));
guesses.push_back(g);
current_pointer++;
}
}
return guesses;
}
/*!
\fn SimpleGuesser::GuessPrimaryLanguage(char* text)
*/
Guess SimpleGuesser::GuessPrimaryLanguage(char* text)
{
vector<Guess> ret = GuessLanguage(text);
if(ret.size() > 0){
return GuessLanguage(text)[0];
}
else{
return Guess();
}
}
/**
* Is used to know wich language is available, unavailable or both
* when mask = 0xF0, return only Available
* when mask = 0x0F, return only Unavailable
* when mask = 0xFF, return both Available and Unavailable
*/
vector<Guess> SimpleGuesser::GetManagedLanguages(const char mask)
{
size_t i;
textcat_t *tables = (textcat_t*)h;
vector<Guess> lang;
if(!h){return lang;}
for (i=0; i<tables->size; i++) {
if(tables->fprint_disable[i] & mask){
string langStr = "[";
langStr += (char*)fp_Name(tables->fprint[i]);
Guess g( (char *)langStr.c_str());
lang.push_back(g);
}
}
return lang;
}
vector<Guess> SimpleGuesser::GetAvailableLanguages(){
return GetManagedLanguages( sal::static_int_cast< char >( 0xF0 ) );
}
vector<Guess> SimpleGuesser::GetUnavailableLanguages(){
return GetManagedLanguages( sal::static_int_cast< char >( 0x0F ));
}
vector<Guess> SimpleGuesser::GetAllManagedLanguages(){
return GetManagedLanguages( sal::static_int_cast< char >( 0xFF ));
}
void SimpleGuesser::XableLanguage(string lang, char mask){
size_t i;
textcat_t *tables = (textcat_t*)h;
if(!h){return;}
for (i=0; i<tables->size; i++) {
string language(fp_Name(tables->fprint[i]));
if(start(language,lang) == 0){
//cout << language << endl;
tables->fprint_disable[i] = mask;
//continue;
}
}
}
void SimpleGuesser::EnableLanguage(string lang){
XableLanguage(lang, sal::static_int_cast< char >( 0xF0 ));
}
void SimpleGuesser::DisableLanguage(string lang){
XableLanguage(lang, sal::static_int_cast< char >( 0x0F ));
}
/**
*
*/
void SimpleGuesser::SetDBPath(const char* path, const char* prefix){
if(h){
textcat_Done(h);
}
h = special_textcat_Init(path, prefix);
}
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