mirror of
https://github.com/geometer/FBReaderJ.git
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104 lines
3 KiB
C++
104 lines
3 KiB
C++
/*
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* Copyright (C) 2004-2013 Geometer Plus <contact@geometerplus.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <jni.h>
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#include <ZLInputStream.h>
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#include <ZLLanguageDetector.h>
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#include <ZLImage.h>
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#include <ZLEncodingConverter.h>
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#include "FormatPlugin.h"
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#include "../library/Book.h"
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bool FormatPlugin::detectEncodingAndLanguage(Book &book, ZLInputStream &stream, bool force) {
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std::string language = book.language();
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std::string encoding = book.encoding();
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if (!force && !encoding.empty()) {
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return true;
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}
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bool detected = false;
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PluginCollection &collection = PluginCollection::Instance();
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if (encoding.empty()) {
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encoding = ZLEncodingConverter::UTF8;
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}
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if (collection.isLanguageAutoDetectEnabled() && stream.open()) {
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static const int BUFSIZE = 65536;
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char *buffer = new char[BUFSIZE];
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const std::size_t size = stream.read(buffer, BUFSIZE);
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stream.close();
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shared_ptr<ZLLanguageDetector::LanguageInfo> info = ZLLanguageDetector().findInfo(buffer, size);
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delete[] buffer;
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if (!info.isNull()) {
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detected = true;
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if (!info->Language.empty()) {
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language = info->Language;
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}
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encoding = info->Encoding;
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if (encoding == ZLEncodingConverter::ASCII || encoding == "iso-8859-1") {
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encoding = "windows-1252";
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}
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}
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}
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book.setEncoding(encoding);
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book.setLanguage(language);
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return detected;
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}
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bool FormatPlugin::detectLanguage(Book &book, ZLInputStream &stream, const std::string &encoding, bool force) {
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std::string language = book.language();
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if (!force && !language.empty()) {
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return true;
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}
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bool detected = false;
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PluginCollection &collection = PluginCollection::Instance();
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if (collection.isLanguageAutoDetectEnabled() && stream.open()) {
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static const int BUFSIZE = 65536;
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char *buffer = new char[BUFSIZE];
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const std::size_t size = stream.read(buffer, BUFSIZE);
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stream.close();
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shared_ptr<ZLLanguageDetector::LanguageInfo> info =
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ZLLanguageDetector().findInfoForEncoding(encoding, buffer, size, -20000);
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delete[] buffer;
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if (!info.isNull()) {
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detected = true;
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if (!info->Language.empty()) {
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language = info->Language;
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}
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}
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}
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book.setLanguage(language);
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return detected;
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}
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const std::string &FormatPlugin::tryOpen(const ZLFile&) const {
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static const std::string EMPTY = "";
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return EMPTY;
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}
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shared_ptr<const ZLImage> FormatPlugin::coverImage(const ZLFile &file) const {
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return 0;
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}
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