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1 /****************************************************************************
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2 **
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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4 ** Contact: Qt Software Information (qt-info@nokia.com)
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5 **
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6 ** This file is part of the demonstration applications of the Qt Toolkit.
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7 **
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8 ** $QT_BEGIN_LICENSE:LGPL$
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9 ** Commercial Usage
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10 ** Licensees holding valid Qt Commercial licenses may use this file in
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11 ** accordance with the Qt Commercial License Agreement provided with the
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12 ** Software or, alternatively, in accordance with the terms contained in
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13 ** a written agreement between you and Nokia.
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14 **
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15 ** GNU Lesser General Public License Usage
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16 ** Alternatively, this file may be used under the terms of the GNU Lesser
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17 ** General Public License version 2.1 as published by the Free Software
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18 ** Foundation and appearing in the file LICENSE.LGPL included in the
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19 ** packaging of this file. Please review the following information to
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20 ** ensure the GNU Lesser General Public License version 2.1 requirements
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21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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22 **
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23 ** In addition, as a special exception, Nokia gives you certain
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24 ** additional rights. These rights are described in the Nokia Qt LGPL
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25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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26 ** package.
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27 **
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28 ** GNU General Public License Usage
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29 ** Alternatively, this file may be used under the terms of the GNU
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30 ** General Public License version 3.0 as published by the Free Software
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31 ** Foundation and appearing in the file LICENSE.GPL included in the
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32 ** packaging of this file. Please review the following information to
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33 ** ensure the GNU General Public License version 3.0 requirements will be
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34 ** met: http://www.gnu.org/copyleft/gpl.html.
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35 **
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36 ** If you are unsure which license is appropriate for your use, please
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37 ** contact the sales department at qt-sales@nokia.com.
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38 ** $QT_END_LICENSE$
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39 **
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40 ****************************************************************************/
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41
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42 module xbel;
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43
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44 import QtCore.QXmlStreamReader;
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45 import QtCore.QDateTime;
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46
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47
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48 import QtCore.QFile;
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49
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50 class BookmarkNode
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51 {
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52 public:
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53 enum Type {
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54 Root,
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55 Folder,
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56 Bookmark,
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57 Separator
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58 };
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59
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60 this(Type type = Root, BookmarkNode *parent = null)
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61 {
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62 expanded = false;
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63 m_parent = parent;
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64 m_type = type;
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65
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66 if (parent)
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67 parent.add(this);
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68 }
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69
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70 ~this()
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71 {
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72 if (m_parent)
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73 m_parent.remove(this);
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74 qDeleteAll(m_children);
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75 m_parent = 0;
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76 m_type = BookmarkNode::Root;
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77 }
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78
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79 bool operator==(const BookmarkNode &other)
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80 {
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81 if (url != other.url
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82 || title != other.title
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83 || desc != other.desc
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84 || expanded != other.expanded
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85 || m_type != other.m_type
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86 || m_children.count() != other.m_children.count())
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87 return false;
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88
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89 for (int i = 0; i < m_children.count(); ++i)
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90 if (!((*(m_children[i])) == (*(other.m_children[i]))))
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91 return false;
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92 return true;
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93 }
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94
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95 Type type() const
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96 {
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97 return m_type;
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98 }
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99
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100 void setType(Type type)
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101 {
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102 m_type = type;
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103 }
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104
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105 QList<BookmarkNode *> children() const
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106 {
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107 return m_children;
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108 }
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109
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110
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111 BookmarkNode *parent() const
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112 {
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113 return m_parent;
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114 }
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115
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116 void add(BookmarkNode *child, int offset = -1)
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117 {
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118 Q_ASSERT(child.m_type != Root);
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119 if (child.m_parent)
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120 child.m_parent.remove(child);
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121 child.m_parent = this;
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122 if (-1 == offset)
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123 offset = m_children.size();
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124 m_children.insert(offset, child);
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125 }
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126
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127 void remove(BookmarkNode *child)
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128 {
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129 child.m_parent = 0;
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130 m_children.removeAll(child);
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131 }
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132
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133 QString url;
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134 QString title;
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135 QString desc;
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136 bool expanded;
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137
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138 private:
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139 BookmarkNode *m_parent;
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140 Type m_type;
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141 QList<BookmarkNode *> m_children;
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142
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143 };
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144
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145 class XbelReader : public QXmlStreamReader
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146 {
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147 public:
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148 this()
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149 {
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150 }
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151
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152 BookmarkNode *read(const QString &fileName)
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153 {
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154 QFile file(fileName);
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155 if (!file.exists()) {
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156 return new BookmarkNode(BookmarkNode::Root);
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157 }
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158 file.open(QFile::ReadOnly);
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159 return read(&file);
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160 }
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161
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162 BookmarkNode *read(QIODevice *device)
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163 {
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164 BookmarkNode *root = new BookmarkNode(BookmarkNode::Root);
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165 setDevice(device);
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166 while (!atEnd()) {
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167 readNext();
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168 if (isStartElement()) {
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169 QString version = attributes().value(QLatin1String("version")).toString();
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170 if (name() == QLatin1String("xbel")
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171 && (version.isEmpty() || version == QLatin1String("1.0"))) {
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172 readXBEL(root);
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173 } else {
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174 raiseError(QObject::tr("The file is not an XBEL version 1.0 file."));
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175 }
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176 }
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177 }
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178 return root;
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179 }
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180
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181 private:
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182 void skipUnknownElement()
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183 {
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184 Q_ASSERT(isStartElement());
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185
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186 while (!atEnd()) {
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187 readNext();
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188
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189 if (isEndElement())
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190 break;
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191
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192 if (isStartElement())
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193 skipUnknownElement();
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194 }
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195 }
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196
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197 void readXBEL(BookmarkNode *parent)
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198 {
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199 Q_ASSERT(isStartElement() && name() == QLatin1String("xbel"));
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200
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201 while (!atEnd()) {
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202 readNext();
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203 if (isEndElement())
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204 break;
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205
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206 if (isStartElement()) {
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207 if (name() == QLatin1String("folder"))
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208 readFolder(parent);
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209 else if (name() == QLatin1String("bookmark"))
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210 readBookmarkNode(parent);
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211 else if (name() == QLatin1String("separator"))
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212 readSeparator(parent);
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213 else
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214 skipUnknownElement();
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215 }
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216 }
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217 }
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218
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219 void readTitle(BookmarkNode *parent)
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220 {
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221 Q_ASSERT(isStartElement() && name() == QLatin1String("title"));
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222 parent.title = readElementText();
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223 }
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224
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225 void readDescription(BookmarkNode *parent)
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226 {
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227 Q_ASSERT(isStartElement() && name() == QLatin1String("desc"));
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228 parent.desc = readElementText();
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229 }
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230
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231 void readSeparator(BookmarkNode *parent)
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232 {
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233 new BookmarkNode(BookmarkNode::Separator, parent);
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234 // empty elements have a start and end element
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235 readNext();
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236 }
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237
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238
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239 void readFolder(BookmarkNode *parent)
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240 {
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241 Q_ASSERT(isStartElement() && name() == QLatin1String("folder"));
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242
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243 BookmarkNode *folder = new BookmarkNode(BookmarkNode::Folder, parent);
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244 folder.expanded = (attributes().value(QLatin1String("folded")) == QLatin1String("no"));
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245
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246 while (!atEnd()) {
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247 readNext();
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248
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249 if (isEndElement())
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250 break;
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251
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252 if (isStartElement()) {
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253 if (name() == QLatin1String("title"))
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254 readTitle(folder);
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255 else if (name() == QLatin1String("desc"))
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256 readDescription(folder);
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257 else if (name() == QLatin1String("folder"))
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258 readFolder(folder);
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259 else if (name() == QLatin1String("bookmark"))
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260 readBookmarkNode(folder);
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261 else if (name() == QLatin1String("separator"))
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262 readSeparator(folder);
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263 else
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264 skipUnknownElement();
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265 }
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266 }
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267 }
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268
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269 void readBookmarkNode(BookmarkNode *parent)
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270 {
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271 Q_ASSERT(isStartElement() && name() == QLatin1String("bookmark"));
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272 BookmarkNode *bookmark = new BookmarkNode(BookmarkNode::Bookmark, parent);
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273 bookmark.url = attributes().value(QLatin1String("href")).toString();
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274 while (!atEnd()) {
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275 readNext();
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276 if (isEndElement())
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277 break;
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278
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279 if (isStartElement()) {
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280 if (name() == QLatin1String("title"))
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281 readTitle(bookmark);
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282 else if (name() == QLatin1String("desc"))
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283 readDescription(bookmark);
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284 else
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285 skipUnknownElement();
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286 }
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287 }
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288 if (bookmark.title.isEmpty())
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289 bookmark.title = QObject::tr("Unknown title");
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290 }
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291
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292 };
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293
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294 import QtCore.QXmlStreamWriter;
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295
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296 class XbelWriter : public QXmlStreamWriter
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297 {
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298 public:
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299 this()
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300 {
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301 setAutoFormatting(true);
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302 }
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303 bool write(const QString &fileName, const BookmarkNode *root);
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304 {
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305 QFile file(fileName);
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306 if (!root || !file.open(QFile::WriteOnly))
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307 return false;
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308 return write(&file, root);
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309 }
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310
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311 bool write(QIODevice *device, const BookmarkNode *root);
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312 {
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313 setDevice(device);
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314
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315 writeStartDocument();
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316 writeDTD(QLatin1String("<!DOCTYPE xbel>"));
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317 writeStartElement(QLatin1String("xbel"));
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318 writeAttribute(QLatin1String("version"), QLatin1String("1.0"));
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319 if (root.type() == BookmarkNode::Root) {
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320 for (int i = 0; i < root.children().count(); ++i)
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321 writeItem(root.children().at(i));
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322 } else {
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323 writeItem(root);
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324 }
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325
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326 writeEndDocument();
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327 return true;
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328 }
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329
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330
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331 private:
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332 void writeItem(const BookmarkNode *parent)
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333 {
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334 switch (parent.type()) {
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335 case BookmarkNode::Folder:
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336 writeStartElement(QLatin1String("folder"));
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337 writeAttribute(QLatin1String("folded"), parent.expanded ? QLatin1String("no") : QLatin1String("yes"));
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338 writeTextElement(QLatin1String("title"), parent.title);
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339 for (int i = 0; i < parent.children().count(); ++i)
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340 writeItem(parent.children().at(i));
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341 writeEndElement();
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342 break;
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343 case BookmarkNode::Bookmark:
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344 writeStartElement(QLatin1String("bookmark"));
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345 if (!parent.url.isEmpty())
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346 writeAttribute(QLatin1String("href"), parent.url);
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347 writeTextElement(QLatin1String("title"), parent.title);
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348 if (!parent.desc.isEmpty())
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349 writeAttribute(QLatin1String("desc"), parent.desc);
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350 writeEndElement();
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351 break;
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352 case BookmarkNode::Separator:
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353 writeEmptyElement(QLatin1String("separator"));
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354 break;
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355 default:
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356 break;
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357 }
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358 }
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359 }
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