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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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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 Lesser General Public License as published by
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* the Free Software Foundation, version 2.1 of the License.
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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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not,
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* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".
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*
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*/
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#include <QXmlStreamReader>
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#include <QIODevice>
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#include <QList>
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#include "xbelreader.h"
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#include "BookmarksManager.h"
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XbelReader::XbelReader(BookmarksManager *bmgr) :
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m_bmgr(bmgr), m_xml(new QXmlStreamReader)
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{
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}
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XbelReader::~XbelReader() {
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if(m_xml) delete m_xml;
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}
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bool XbelReader::read(QIODevice *device)
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{
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if(!device) {
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m_xml->raiseError(QObject::tr("Invalid Device passed into XBEL Reader."));
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}
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if(!m_bmgr) {
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m_xml->raiseError(QObject::tr("Invalid BookmarkManager passed into XBEL Reader."));
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} else {
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m_xml->setDevice(device);
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if(m_xml->readNextStartElement()) {
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if(m_xml->name() == "xbel" &&
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m_xml->attributes().value("version") == "1.0")
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readXBEL();
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else
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m_xml->raiseError(QObject::tr("The file is not an XBEL version 1.0 file."));
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} else
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m_xml->raiseError(QObject::tr("The file is not an XBEL version 1.0 file."));
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}
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return !m_xml->error();
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}
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/**
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* This function should be called before reading any xml elements
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* It attempts to validate that the file being read is actually an
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* xbel file.
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* @return whether the file is an XBEL file.
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*/
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bool XbelReader::isValidXbel()
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{
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// The xbel element must exist and must be version 1.0
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return true;
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}
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QString XbelReader::errorString() const
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{
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return QObject::tr("%1\nLine %2, column %3")
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.arg(m_xml->errorString())
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.arg(m_xml->lineNumber())
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.arg(m_xml->columnNumber());
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}
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void XbelReader::readXBEL()
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{
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QString folder = "";
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QList<QString> folders;
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while (m_xml->readNextStartElement()) {
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if (m_xml->name() == "folder")
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readFolder(folders);
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else if (m_xml->name() == "bookmark")
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readBookmark(folders);
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else
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m_xml->skipCurrentElement();
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}
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}
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QString XbelReader::readFolder(QList<QString>& parentFolders)
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{
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QString folderName = "";
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while (m_xml->readNextStartElement()) {
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if (m_xml->name() == "title")
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folderName = m_xml->readElementText();
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else if (m_xml->name() == "folder") {
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QList<QString> folders;
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folders = folders + parentFolders;
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if(!folderName.isEmpty())
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folders.append(folderName);
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readFolder(folders);
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} else if (m_xml->name() == "bookmark") {
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QList<QString> folders;
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folders = folders + parentFolders;
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if(!folderName.isEmpty())
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folders.append(folderName);
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readBookmark(folders);
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} else
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m_xml->skipCurrentElement();
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}
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return folderName;
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}
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void XbelReader::readBookmark(QList<QString>& parentFolders)
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{
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QXmlStreamAttributes attrs = m_xml->attributes();
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// if there is no URL attribute skip this bookmark.
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if(!attrs.hasAttribute("href")) {
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m_xml->skipCurrentElement();
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return;
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}
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QString url = attrs.value("href").toString();
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QString title = "Untitled";
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QString desc = "";
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QList<QString> tags;
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tags = tags + parentFolders;
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while (m_xml->readNextStartElement()) {
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if (m_xml->name() == "title")
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title = m_xml->readElementText();
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else if(m_xml->name() == "desc")
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desc = m_xml->readElementText();
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else if(m_xml->name() == "info")
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readInfo(tags);
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else
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m_xml->skipCurrentElement();
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}
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int bmID = m_bmgr->addBookmark(title, url);
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if (bmID > 0 && tags.size() > 0) {
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QList<QString>::iterator iter;
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for (iter = tags.begin(); iter != tags.end(); ++iter)
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m_bmgr->addTag(bmID, *iter);
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}
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}
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/**
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* Reads the info element.
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* @param tags - A reference to a list of string tags
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*/
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void XbelReader::readInfo(QList<QString>& tags)
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{
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QString owner = "http://www.nokia.com";
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while(m_xml->readNextStartElement()) {
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if(m_xml->name() == "metadata")
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readMetadata(tags, owner);
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else
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m_xml->skipCurrentElement();
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}
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}
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/**
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* This function reads the metadata XBEL tag.
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* @param tags - A reference to a list of strings. This is passed into
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* readTags.
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* @param owner - A reference to the owner string. This is to allow for
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* future support for this attribute.
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*/
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void XbelReader::readMetadata(QList<QString>& tags, QString &owner)
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{
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if(m_xml->attributes().hasAttribute("owner"))
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owner = m_xml->attributes().value("owner").toString();
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while(m_xml->readNextStartElement()) {
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if(m_xml->name() == "tags")
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readTags(tags);
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else
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m_xml->skipCurrentElement();
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}
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}
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/**
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* Reads the tags and tag attributes, adding all tags found to
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* the list of string tags passed into the function.
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* @param tags - Reference to a list of string tags.
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*/
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void XbelReader::readTags(QList<QString>& tags)
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{
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while(m_xml->readNextStartElement()) {
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if(m_xml->name() == "tag") {
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QString tag = m_xml->readElementText();
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tags.append(tag);
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} else
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m_xml->skipCurrentElement();
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}
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}
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