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/*
* Copyright (C) 2004-2012 Geometer Plus <contact@geometerplus.com>
*
* 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 <ZLInputStream.h>
#include <ZLLanguageDetector.h>
#include <ZLImage.h>
#include "FormatPlugin.h"
#include "../library/Book.h"
bool FormatPlugin::detectEncodingAndLanguage(Book &book, ZLInputStream &stream, bool force) {
std::string language = book.language();
std::string encoding = book.encoding();
if (!force && !encoding.empty() && !language.empty()) {
return true;
}
bool detected = false;
PluginCollection &collection = PluginCollection::Instance();
if (language.empty()) {
language = collection.DefaultLanguageOption.value();
}
if (encoding.empty()) {
encoding = collection.DefaultEncodingOption.value();
}
if (collection.LanguageAutoDetectOption.value() && stream.open()) {
static const int BUFSIZE = 65536;
char *buffer = new char[BUFSIZE];
const std::size_t size = stream.read(buffer, BUFSIZE);
stream.close();
shared_ptr<ZLLanguageDetector::LanguageInfo> info =
ZLLanguageDetector().findInfo(buffer, size);
delete[] buffer;
if (!info.isNull()) {
detected = true;
if (!info->Language.empty()) {
language = info->Language;
}
encoding = info->Encoding;
if (encoding == "US-ASCII" || encoding == "ISO-8859-1") {
encoding = "windows-1252";
}
}
}
book.setEncoding(encoding);
book.setLanguage(language);
return detected;
}
bool FormatPlugin::detectLanguage(Book &book, ZLInputStream &stream, const std::string &encoding, bool force) {
std::string language = book.language();
if (!force && !language.empty()) {
return true;
}
bool detected = false;
PluginCollection &collection = PluginCollection::Instance();
if (language.empty()) {
language = collection.DefaultLanguageOption.value();
}
if (collection.LanguageAutoDetectOption.value() && stream.open()) {
static const int BUFSIZE = 65536;
char *buffer = new char[BUFSIZE];
const std::size_t size = stream.read(buffer, BUFSIZE);
stream.close();
shared_ptr<ZLLanguageDetector::LanguageInfo> info =
ZLLanguageDetector().findInfoForEncoding(encoding, buffer, size, -20000);
delete[] buffer;
if (!info.isNull()) {
if (!info->Language.empty()) {
detected = true;
language = info->Language;
}
}
}
book.setLanguage(language);
return detected;
}
const std::string &FormatPlugin::tryOpen(const ZLFile&) const {
static const std::string EMPTY = "";
return EMPTY;
}
shared_ptr<const ZLImage> FormatPlugin::coverImage(const ZLFile &file) const {
return 0;
}
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