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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 <cstdlib>
#include <ZLStringUtil.h>
#include <ZLUnicodeUtil.h>
#include <ZLLogger.h>
#include <ZLXMLNamespace.h>
#include "OEBMetaInfoReader.h"
#include "../util/EntityFilesCollector.h"
#include "../../library/Book.h"
OEBMetaInfoReader::OEBMetaInfoReader(Book &book) : myBook(book) {
myBook.removeAllAuthors();
myBook.setTitle("");
myBook.removeAllTags();
}
static const std::string METADATA = "metadata";
static const std::string DC_METADATA = "dc-metadata";
static const std::string META = "meta";
static const std::string AUTHOR_ROLE = "aut";
void OEBMetaInfoReader::characterDataHandler(const char *text, std::size_t len) {
switch (myReadState) {
case READ_NONE:
case READ_METADATA:
break;
case READ_AUTHOR:
case READ_AUTHOR2:
case READ_SUBJECT:
case READ_LANGUAGE:
case READ_TITLE:
myBuffer.append(text, len);
break;
}
}
bool OEBMetaInfoReader::testDCTag(const std::string &name, const std::string &tag) const {
return
testTag(ZLXMLNamespace::DublinCore, name, tag) ||
testTag(ZLXMLNamespace::DublinCoreLegacy, name, tag);
}
bool OEBMetaInfoReader::isNSName(const std::string &fullName, const std::string &shortName, const std::string &fullNSId) const {
const int prefixLength = fullName.length() - shortName.length() - 1;
if (prefixLength <= 0 ||
fullName[prefixLength] != ':' ||
!ZLStringUtil::stringEndsWith(fullName, shortName)) {
return false;
}
const std::map<std::string,std::string> &namespaceMap = namespaces();
std::map<std::string,std::string>::const_iterator iter =
namespaceMap.find(fullName.substr(0, prefixLength));
return iter != namespaceMap.end() && iter->second == fullNSId;
}
void OEBMetaInfoReader::startElementHandler(const char *tag, const char **attributes) {
const std::string tagString = ZLUnicodeUtil::toLower(tag);
switch (myReadState) {
default:
break;
case READ_NONE:
if (testTag(ZLXMLNamespace::OpenPackagingFormat, METADATA, tagString) ||
DC_METADATA == tagString) {
myReadState = READ_METADATA;
}
break;
case READ_METADATA:
if (testDCTag("title", tagString)) {
myReadState = READ_TITLE;
} else if (testDCTag("creator", tagString)) {
const char *role = attributeValue(attributes, "role");
if (role == 0) {
myReadState = READ_AUTHOR2;
} else if (AUTHOR_ROLE == role) {
myReadState = READ_AUTHOR;
}
} else if (testDCTag("subject", tagString)) {
myReadState = READ_SUBJECT;
} else if (testDCTag("language", tagString)) {
myReadState = READ_LANGUAGE;
} else if (testTag(ZLXMLNamespace::OpenPackagingFormat, META, tagString)) {
const char *name = attributeValue(attributes, "name");
const char *content = attributeValue(attributes, "content");
if (name != 0 && content != 0) {
std::string sName = name;
if (sName == "calibre:series" || isNSName(sName, "series", ZLXMLNamespace::CalibreMetadata)) {
myBook.setSeries(content, myBook.indexInSeries());
} else if (sName == "calibre:series_index" || isNSName(sName, "series_index", ZLXMLNamespace::CalibreMetadata)) {
myBook.setSeries(myBook.seriesTitle(), std::string(content));
}
}
}
break;
}
}
void OEBMetaInfoReader::endElementHandler(const char *tag) {
const std::string tagString = ZLUnicodeUtil::toLower(tag);
ZLUnicodeUtil::utf8Trim(myBuffer);
switch (myReadState) {
case READ_NONE:
break;
case READ_METADATA:
if (testTag(ZLXMLNamespace::OpenPackagingFormat, METADATA, tagString) || DC_METADATA == tagString) {
interrupt();
myReadState = READ_NONE;
return;
}
break;
case READ_AUTHOR:
if (!myBuffer.empty()) {
myAuthorList.push_back(myBuffer);
}
break;
case READ_AUTHOR2:
if (!myBuffer.empty()) {
myAuthorList2.push_back(myBuffer);
}
break;
case READ_SUBJECT:
if (!myBuffer.empty()) {
myBook.addTag(myBuffer);
}
break;
case READ_TITLE:
if (!myBuffer.empty()) {
myBook.setTitle(myBuffer);
}
break;
case READ_LANGUAGE:
if (!myBuffer.empty()) {
int index = myBuffer.find('-');
if (index >= 0) {
myBuffer = myBuffer.substr(0, index);
}
index = myBuffer.find('_');
if (index >= 0) {
myBuffer = myBuffer.substr(0, index);
}
myBook.setLanguage(myBuffer);
}
break;
}
myBuffer.erase();
myReadState = READ_METADATA;
}
bool OEBMetaInfoReader::processNamespaces() const {
return true;
}
bool OEBMetaInfoReader::readMetaInfo(const ZLFile &file) {
myReadState = READ_NONE;
if (!readDocument(file)) {
ZLLogger::Instance().println("epub", "Failure while reading info from " + file.path());
return false;
}
if (!myAuthorList.empty()) {
for (std::vector<std::string>::const_iterator it = myAuthorList.begin(); it != myAuthorList.end(); ++it) {
myBook.addAuthor(*it);
}
} else {
for (std::vector<std::string>::const_iterator it = myAuthorList2.begin(); it != myAuthorList2.end(); ++it) {
myBook.addAuthor(*it);
}
}
return true;
}
const std::vector<std::string> &OEBMetaInfoReader::externalDTDs() const {
return EntityFilesCollector::Instance().externalDTDs("xhtml");
}
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