1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the demonstration applications of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "xbel.h"

    43 

    44 #include <QtCore/QFile>

    45 

    46 BookmarkNode::BookmarkNode(BookmarkNode::Type type, BookmarkNode *parent) :

    47      expanded(false)

    48    , m_parent(parent)

    49    , m_type(type)

    50 {

    51     if (parent)

    52         parent->add(this);

    53 }

    54 

    55 BookmarkNode::~BookmarkNode()

    56 {

    57     if (m_parent)

    58         m_parent->remove(this);

    59     qDeleteAll(m_children);

    60     m_parent = 0;

    61     m_type = BookmarkNode::Root;

    62 }

    63 

    64 bool BookmarkNode::operator==(const BookmarkNode &other)

    65 {

    66     if (url != other.url

    67         || title != other.title

    68         || desc != other.desc

    69         || expanded != other.expanded

    70         || m_type != other.m_type

    71         || m_children.count() != other.m_children.count())

    72         return false;

    73 

    74     for (int i = 0; i < m_children.count(); ++i)

    75         if (!((*(m_children[i])) == (*(other.m_children[i]))))

    76             return false;

    77     return true;

    78 }

    79 

    80 BookmarkNode::Type BookmarkNode::type() const

    81 {

    82     return m_type;

    83 }

    84 

    85 void BookmarkNode::setType(Type type)

    86 {

    87     m_type = type;

    88 }

    89 

    90 QList<BookmarkNode *> BookmarkNode::children() const

    91 {

    92     return m_children;

    93 }

    94 

    95 BookmarkNode *BookmarkNode::parent() const

    96 {

    97     return m_parent;

    98 }

    99 

   100 void BookmarkNode::add(BookmarkNode *child, int offset)

   101 {

   102     Q_ASSERT(child->m_type != Root);

   103     if (child->m_parent)

   104         child->m_parent->remove(child);

   105     child->m_parent = this;

   106     if (-1 == offset)

   107         offset = m_children.size();

   108     m_children.insert(offset, child);

   109 }

   110 

   111 void BookmarkNode::remove(BookmarkNode *child)

   112 {

   113     child->m_parent = 0;

   114     m_children.removeAll(child);

   115 }

   116 

   117 

   118 XbelReader::XbelReader()

   119 {

   120 }

   121 

   122 BookmarkNode *XbelReader::read(const QString &fileName)

   123 {

   124     QFile file(fileName);

   125     if (!file.exists()) {

   126         return new BookmarkNode(BookmarkNode::Root);

   127     }

   128     file.open(QFile::ReadOnly);

   129     return read(&file);

   130 }

   131 

   132 BookmarkNode *XbelReader::read(QIODevice *device)

   133 {

   134     BookmarkNode *root = new BookmarkNode(BookmarkNode::Root);

   135     setDevice(device);

   136     if (readNextStartElement()) {

   137         QString version = attributes().value(QLatin1String("version")).toString();

   138         if (name() == QLatin1String("xbel")

   139             && (version.isEmpty() || version == QLatin1String("1.0"))) {

   140             readXBEL(root);

   141         } else {

   142             raiseError(QObject::tr("The file is not an XBEL version 1.0 file."));

   143         }

   144     }

   145     return root;

   146 }

   147 

   148 void XbelReader::readXBEL(BookmarkNode *parent)

   149 {

   150     Q_ASSERT(isStartElement() && name() == QLatin1String("xbel"));

   151 

   152     while (readNextStartElement()) {

   153         if (name() == QLatin1String("folder"))

   154             readFolder(parent);

   155         else if (name() == QLatin1String("bookmark"))

   156             readBookmarkNode(parent);

   157         else if (name() == QLatin1String("separator"))

   158             readSeparator(parent);

   159         else

   160             skipCurrentElement();

   161     }

   162 }

   163 

   164 void XbelReader::readFolder(BookmarkNode *parent)

   165 {

   166     Q_ASSERT(isStartElement() && name() == QLatin1String("folder"));

   167 

   168     BookmarkNode *folder = new BookmarkNode(BookmarkNode::Folder, parent);

   169     folder->expanded = (attributes().value(QLatin1String("folded")) == QLatin1String("no"));

   170 

   171     while (readNextStartElement()) {

   172         if (name() == QLatin1String("title"))

   173             readTitle(folder);

   174         else if (name() == QLatin1String("desc"))

   175             readDescription(folder);

   176         else if (name() == QLatin1String("folder"))

   177             readFolder(folder);

   178         else if (name() == QLatin1String("bookmark"))

   179             readBookmarkNode(folder);

   180         else if (name() == QLatin1String("separator"))

   181             readSeparator(folder);

   182         else

   183             skipCurrentElement();

   184     }

   185 }

   186 

   187 void XbelReader::readTitle(BookmarkNode *parent)

   188 {

   189     Q_ASSERT(isStartElement() && name() == QLatin1String("title"));

   190     parent->title = readElementText();

   191 }

   192 

   193 void XbelReader::readDescription(BookmarkNode *parent)

   194 {

   195     Q_ASSERT(isStartElement() && name() == QLatin1String("desc"));

   196     parent->desc = readElementText();

   197 }

   198 

   199 void XbelReader::readSeparator(BookmarkNode *parent)

   200 {

   201     new BookmarkNode(BookmarkNode::Separator, parent);

   202     // empty elements have a start and end element

   203     readNext();

   204 }

   205 

   206 void XbelReader::readBookmarkNode(BookmarkNode *parent)

   207 {

   208     Q_ASSERT(isStartElement() && name() == QLatin1String("bookmark"));

   209     BookmarkNode *bookmark = new BookmarkNode(BookmarkNode::Bookmark, parent);

   210     bookmark->url = attributes().value(QLatin1String("href")).toString();

   211     while (readNextStartElement()) {

   212         if (name() == QLatin1String("title"))

   213             readTitle(bookmark);

   214         else if (name() == QLatin1String("desc"))

   215             readDescription(bookmark);

   216         else

   217             skipCurrentElement();

   218     }

   219     if (bookmark->title.isEmpty())

   220         bookmark->title = QObject::tr("Unknown title");

   221 }

   222 

   223 

   224 XbelWriter::XbelWriter()

   225 {

   226     setAutoFormatting(true);

   227 }

   228 

   229 bool XbelWriter::write(const QString &fileName, const BookmarkNode *root)

   230 {

   231     QFile file(fileName);

   232     if (!root || !file.open(QFile::WriteOnly))

   233         return false;

   234     return write(&file, root);

   235 }

   236 

   237 bool XbelWriter::write(QIODevice *device, const BookmarkNode *root)

   238 {

   239     setDevice(device);

   240 

   241     writeStartDocument();

   242     writeDTD(QLatin1String("<!DOCTYPE xbel>"));

   243     writeStartElement(QLatin1String("xbel"));

   244     writeAttribute(QLatin1String("version"), QLatin1String("1.0"));

   245     if (root->type() == BookmarkNode::Root) {

   246         for (int i = 0; i < root->children().count(); ++i)

   247             writeItem(root->children().at(i));

   248     } else {

   249         writeItem(root);

   250     }

   251 

   252     writeEndDocument();

   253     return true;

   254 }

   255 

   256 void XbelWriter::writeItem(const BookmarkNode *parent)

   257 {

   258     switch (parent->type()) {

   259     case BookmarkNode::Folder:

   260         writeStartElement(QLatin1String("folder"));

   261         writeAttribute(QLatin1String("folded"), parent->expanded ? QLatin1String("no") : QLatin1String("yes"));

   262         writeTextElement(QLatin1String("title"), parent->title);

   263         for (int i = 0; i < parent->children().count(); ++i)

   264             writeItem(parent->children().at(i));

   265         writeEndElement();

   266         break;

   267     case BookmarkNode::Bookmark:

   268         writeStartElement(QLatin1String("bookmark"));

   269         if (!parent->url.isEmpty())

   270             writeAttribute(QLatin1String("href"), parent->url);

   271         writeTextElement(QLatin1String("title"), parent->title);

   272         if (!parent->desc.isEmpty())

   273             writeAttribute(QLatin1String("desc"), parent->desc);

   274         writeEndElement();

   275         break;

   276     case BookmarkNode::Separator:

   277         writeEmptyElement(QLatin1String("separator"));

   278         break;

   279     default:

   280         break;

   281     }

   282 }

   283