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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
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73
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45 import qt.core.QXmlStreamReader;
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46 import qt.core.QDateTime;
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47 import qt.core.QFile;
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45
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48
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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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73
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53
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54 enum Type {
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55 Root,
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56 Folder,
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57 Bookmark,
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58 Separator
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59 };
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45
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60
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73
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61 this(Type type = Root, BookmarkNode parent = null)
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62 {
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63 expanded = false;
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64 m_parent = parent;
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65 m_type = type;
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66
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67 if (parent)
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68 parent.add(this);
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69 }
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70
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71 ~this()
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72 {
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73 if (m_parent)
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74 m_parent.remove(this);
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75 qDeleteAll(m_children);
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76 m_parent = 0;
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77 m_type = BookmarkNode.Root;
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78 }
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45
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79
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73
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80 bool operator==(BookmarkNode other)
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81 {
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82 if (url != other.url || title != other.title || desc != other.desc || expanded != other.expanded
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83 || m_type != other.m_type || m_children.count() != other.m_children.count())
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84 return false;
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85
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86 for (int i = 0; i < m_children.count(); ++i)
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87 if (!((*(m_children[i])) == (*(other.m_children[i]))))
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88 return false;
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89 return true;
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90 }
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45
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91
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73
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92 Type type() const
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93 {
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94 return m_type;
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95 }
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45
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96
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73
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97 void setType(Type type)
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98 {
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99 m_type = type;
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100 }
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45
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101
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73
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102 QList<BookmarkNode > children() const
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103 {
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104 return m_children;
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105 }
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45
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106
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107
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73
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108 BookmarkNode parent() const
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109 {
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110 return m_parent;
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111 }
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45
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112
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73
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113 void add(BookmarkNode child, int offset = -1)
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114 {
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115 assert(child.m_type != Root);
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116 if (child.m_parent)
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117 child.m_parent.remove(child);
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118 child.m_parent = this;
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119 if (-1 == offset)
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120 offset = m_children.size();
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121 m_children.insert(offset, child);
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122 }
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45
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123
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73
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124 void remove(BookmarkNode child)
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125 {
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126 child.m_parent = 0;
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127 m_children.removeAll(child);
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128 }
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129
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73
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130 QString url;
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131 QString title;
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132 QString desc;
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133 bool expanded;
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45
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134
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135 private:
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136
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73
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137 BookmarkNode m_parent;
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138 Type m_type;
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139 QList<BookmarkNode> m_children;
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140 }
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45
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141
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142 class XbelReader : public QXmlStreamReader
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143 {
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144 public:
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73
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145
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146 this()
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147 {
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148 }
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149
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73
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150 BookmarkNode read(QString fileName)
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151 {
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152 QFile file(fileName);
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153 if (!file.exists()) {
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154 return new BookmarkNode(BookmarkNode.Root);
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155 }
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156 file.open(QFile.ReadOnly);
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157 return read(&file);
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158 }
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159
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73
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160 BookmarkNode read(QIODevice device)
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161 {
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162 BookmarkNode root = new BookmarkNode(BookmarkNode.Root);
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163 setDevice(device);
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164 while (!atEnd()) {
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165 readNext();
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166 if (isStartElement()) {
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167 QString version_ = attributes().value(QLatin1String("version")).toString();
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168 if (name() == QLatin1String("xbel") && (version_.isEmpty() || version_ == QLatin1String("1.0"))) {
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169 readXBEL(root);
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170 } else {
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171 raiseError(QObject.tr("The file is not an XBEL version 1.0 file."));
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172 }
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173 }
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174 }
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175 return root;
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176 }
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45
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177
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178 private:
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73
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179 void skipUnknownElement()
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180 {
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181 assert(isStartElement());
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182
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183 while (!atEnd()) {
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184 readNext();
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185
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186 if (isEndElement())
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187 break;
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45
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188
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73
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189 if (isStartElement())
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190 skipUnknownElement();
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191 }
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192 }
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193
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194 void readXBEL(BookmarkNode parent)
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195 {
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196 assert(isStartElement() && name() == QLatin1String("xbel"));
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197
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198 while (!atEnd()) {
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199 readNext();
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200 if (isEndElement())
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201 break;
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45
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202
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73
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203 if (isStartElement()) {
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204 if (name() == QLatin1String("folder"))
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205 readFolder(parent);
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206 else if (name() == QLatin1String("bookmark"))
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207 readBookmarkNode(parent);
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208 else if (name() == QLatin1String("separator"))
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209 readSeparator(parent);
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210 else
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211 skipUnknownElement();
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212 }
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213 }
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214 }
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45
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215
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73
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216 void readTitle(BookmarkNode parent)
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217 {
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218 assert(isStartElement() && name() == QLatin1String("title"));
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219 parent.title = readElementText();
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220 }
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221
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222 void readDescription(BookmarkNode parent)
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223 {
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224 assert(isStartElement() && name() == QLatin1String("desc"));
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225 parent.desc = readElementText();
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226 }
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227
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73
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228 void readSeparator(BookmarkNode parent)
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229 {
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230 new BookmarkNode(BookmarkNode.Separator, parent);
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231 // empty elements have a start and end element
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232 readNext();
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233 }
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234
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45
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235
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73
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236 void readFolder(BookmarkNode parent)
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237 {
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238 assert(isStartElement() && name() == QLatin1String("folder"));
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239
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240 BookmarkNode folder = new BookmarkNode(BookmarkNode.Folder, parent);
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241 folder.expanded = (attributes().value(QLatin1String("folded")) == QLatin1String("no"));
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242
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243 while (!atEnd()) {
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244 readNext();
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245
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246 if (isEndElement())
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247 break;
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45
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248
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73
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249 if (isStartElement()) {
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250 if (name() == QLatin1String("title"))
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251 readTitle(folder);
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252 else if (name() == QLatin1String("desc"))
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253 readDescription(folder);
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254 else if (name() == QLatin1String("folder"))
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255 readFolder(folder);
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256 else if (name() == QLatin1String("bookmark"))
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257 readBookmarkNode(folder);
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258 else if (name() == QLatin1String("separator"))
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259 readSeparator(folder);
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260 else
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261 skipUnknownElement();
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262 }
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263 }
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264 }
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265
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266 void readBookmarkNode(BookmarkNode parent)
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267 {
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268 assert(isStartElement() && name() == QLatin1String("bookmark"));
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269 BookmarkNode bookmark = new BookmarkNode(BookmarkNode.Bookmark, parent);
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270 bookmark.url = attributes().value(QLatin1String("href")).toString();
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271 while (!atEnd()) {
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272 readNext();
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273 if (isEndElement())
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274 break;
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275
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276 if (isStartElement()) {
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277 if (name() == QLatin1String("title"))
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278 readTitle(bookmark);
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279 else if (name() == QLatin1String("desc"))
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280 readDescription(bookmark);
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281 else
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282 skipUnknownElement();
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283 }
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284 }
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285 if (bookmark.title.isEmpty())
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286 bookmark.title = QObject.tr("Unknown title");
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287 }
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288 }
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289
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73
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290 import qt.core.QXmlStreamWriter;
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45
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291
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292 class XbelWriter : public QXmlStreamWriter
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293 {
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294 public:
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295
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73
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296 this()
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297 {
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298 setAutoFormatting(true);
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299 }
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300
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301 bool write(QString fileName, BookmarkNode root);
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302 {
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303 QFile file(fileName);
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304 if (!root || !file.open(QFile.WriteOnly))
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305 return false;
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306 return write(&file, root);
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307 }
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308
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73
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309 bool write(QIODevice device, BookmarkNode root);
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310 {
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311 setDevice(device);
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312
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313 writeStartDocument();
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314 writeDTD(QLatin1String("<!DOCTYPE xbel>"));
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315 writeStartElement(QLatin1String("xbel"));
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316 writeAttribute(QLatin1String("version"), QLatin1String("1.0"));
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317 if (root.type() == BookmarkNode.Root) {
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318 for (int i = 0; i < root.children().count(); ++i)
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319 writeItem(root.children().at(i));
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320 } else {
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321 writeItem(root);
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322 }
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323
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73
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324 writeEndDocument();
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325 return true;
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326 }
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327
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328 private:
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73
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329
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330 void writeItem(BookmarkNode parent)
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331 {
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332 switch (parent.type()) {
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333 case BookmarkNode.Folder:
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334 writeStartElement(QLatin1String("folder"));
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335 writeAttribute(QLatin1String("folded"), parent.expanded ? QLatin1String("no") : QLatin1String("yes"));
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336 writeTextElement(QLatin1String("title"), parent.title);
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337 for (int i = 0; i < parent.children().count(); ++i)
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338 writeItem(parent.children().at(i));
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339 writeEndElement();
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340 break;
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341 case BookmarkNode.Bookmark:
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342 writeStartElement(QLatin1String("bookmark"));
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343 if (!parent.url.isEmpty())
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344 writeAttribute(QLatin1String("href"), parent.url);
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345 writeTextElement(QLatin1String("title"), parent.title);
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346 if (!parent.desc.isEmpty())
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347 writeAttribute(QLatin1String("desc"), parent.desc);
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348 writeEndElement();
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349 break;
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350 case BookmarkNode.Separator:
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351 writeEmptyElement(QLatin1String("separator"));
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352 break;
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353 default:
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354 break;
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355 }
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356 }
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45
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357 }
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