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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
/**
*
*
*
*
* TODO
* - Add exception throwing when h == NULL
* - Not init h when implicit constructor is launched
*/
#include <string.h>
#include <sstream>
#include <iostream>
#ifdef SYSTEM_LIBEXTTEXTCAT
#include <libexttextcat/textcat.h>
#include <libexttextcat/common.h>
#include <libexttextcat/constants.h>
#include <libexttextcat/fingerprint.h>
#include <libexttextcat/utf8misc.h>
#else
#include <textcat.h>
#include <common.h>
#include <constants.h>
#include <fingerprint.h>
#include <utf8misc.h>
#endif
#include <sal/types.h>
#include "altstrfunc.hxx"
#include "simpleguesser.hxx"
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;
}
SimpleGuesser& SimpleGuesser::operator=(const SimpleGuesser& sg){
// Check for self-assignment!
if (this == &sg) // Same object?
return *this; // Yes, so skip assignment, and just return *this.
if(h){textcat_Done(h);}
h = sg.h;
return *this;
}
SimpleGuesser::~SimpleGuesser()
{
if(h){textcat_Done(h);}
}
/*!
\fn SimpleGuesser::GuessLanguage(char* text)
*/
vector<Guess> SimpleGuesser::GuessLanguage(const char* text)
{
vector<Guess> guesses;
if (!h)
return guesses;
int len = strlen(text);
if (len > MAX_STRING_LENGTH_TO_ANALYSE)
len = MAX_STRING_LENGTH_TO_ANALYSE;
const char *guess_list = textcat_Classify(h, text, len);
if (strcmp(guess_list, TEXTCAT_RESULT_SHORT_STR) == 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(guess_list + current_pointer);
guesses.push_back(g);
current_pointer++;
}
}
return guesses;
}
Guess SimpleGuesser::GuessPrimaryLanguage(const char* text)
{
vector<Guess> ret = GuessLanguage(text);
return ret.empty() ? Guess() : ret[0];
}
/**
* Is used to know which 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)
{
textcat_t *tables = static_cast<textcat_t*>(h);
vector<Guess> lang;
if(!h){return lang;}
for (size_t i=0; i<tables->size; ++i)
{
if (tables->fprint_disable[i] & mask)
{
string langStr = "[";
langStr += fp_Name(tables->fprint[i]);
Guess g(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(const string& lang, char mask)
{
textcat_t *tables = static_cast<textcat_t*>(h);
if(!h){return;}
for (size_t i=0; i<tables->size; i++)
{
string language(fp_Name(tables->fprint[i]));
if (start(language,lang) == 0)
tables->fprint_disable[i] = mask;
}
}
void SimpleGuesser::EnableLanguage(const string& lang)
{
XableLanguage(lang, sal::static_int_cast< char >( 0xF0 ));
}
void SimpleGuesser::DisableLanguage(const 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);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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