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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Mobility Components. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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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 |
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43 #ifndef QVERSITREADER_P_H |
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44 #define QVERSITREADER_P_H |
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45 |
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46 // |
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47 // W A R N I N G |
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48 // ------------- |
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49 // |
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50 // This file is not part of the Qt API. It exists purely as an |
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51 // implementation detail. This header file may change from version to |
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52 // version without notice, or even be removed. |
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53 // |
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54 // We mean it. |
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55 // |
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56 |
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57 #include "qmobilityglobal.h" |
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58 #include "qversitreader.h" |
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59 #include "qversitdocument.h" |
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60 #include "qversitproperty.h" |
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61 #include "versitutils_p.h" |
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62 |
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63 #include <QObject> |
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64 #include <QThread> |
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65 #include <QByteArray> |
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66 #include <QIODevice> |
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67 #include <QList> |
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68 #include <QPointer> |
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69 #include <QScopedPointer> |
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70 #include <QByteArray> |
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71 #include <QMutex> |
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72 #include <QWaitCondition> |
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73 #include <QPair> |
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74 #include <QHash> |
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75 |
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76 QT_BEGIN_NAMESPACE |
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77 class QBuffer; |
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78 QT_END_NAMESPACE |
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79 |
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80 QTM_BEGIN_NAMESPACE |
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81 |
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82 // The maximum number of bytes allowed to stay in memory after being read. The smaller this is, |
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83 // the more time spent moving bytes around. The larger it is, the more memory is wasted. |
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84 static const int MAX_OLD_BYTES_TO_KEEP = 8192; |
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85 |
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86 class Q_AUTOTEST_EXPORT VersitCursor |
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87 { |
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88 public: |
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89 VersitCursor() : position(-1), selection(-1) {} |
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90 explicit VersitCursor(const QByteArray& d) :data(d), position(0), selection(0) {} |
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91 QByteArray data; |
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92 int position; |
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93 int selection; |
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94 |
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95 void setData(const QByteArray& d) {data = d; position = selection = 0;} |
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96 void setPosition(int pos) {position = pos; selection = qMax(pos, selection);} |
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97 void setSelection(int pos) {selection = qMax(pos, position);} |
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98 void dropOldData() |
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99 { |
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100 if (position > MAX_OLD_BYTES_TO_KEEP && selection >= position) { |
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101 data.remove(0, position); |
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102 selection -= position; |
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103 position = 0; |
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104 } |
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105 } |
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106 }; |
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107 |
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108 class Q_AUTOTEST_EXPORT LineReader |
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109 { |
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110 public: |
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111 LineReader(QIODevice* device, QTextCodec* codec, int chunkSize = 1000); |
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112 VersitCursor readLine(); |
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113 int odometer(); |
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114 bool atEnd(); |
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115 QTextCodec* codec(); |
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116 |
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117 private: |
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118 bool tryReadLine(VersitCursor& cursor, bool atEnd); |
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119 |
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120 QIODevice* mDevice; |
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121 QTextCodec* mCodec; |
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122 int mChunkSize; // How many bytes to read in one go. |
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123 QList<QByteArrayMatcher> mCrlfList; |
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124 VersitCursor mBuffer; |
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125 int mOdometer; |
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126 int mSearchFrom; |
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127 }; |
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128 |
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129 class Q_AUTOTEST_EXPORT QVersitReaderPrivate : public QThread |
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130 { |
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131 Q_OBJECT |
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132 |
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133 public: // Constructors and destructor |
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134 QVersitReaderPrivate(); |
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135 ~QVersitReaderPrivate(); |
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136 void init(QVersitReader* reader); |
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137 |
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138 signals: |
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139 void stateChanged(QVersitReader::State state); |
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140 void resultsAvailable(); |
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141 |
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142 protected: // From QThread |
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143 void run(); |
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144 |
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145 public: // New functions |
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146 void read(); |
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147 |
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148 // mutexed getters and setters. |
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149 void setState(QVersitReader::State); |
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150 QVersitReader::State state() const; |
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151 void setError(QVersitReader::Error); |
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152 QVersitReader::Error error() const; |
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153 void setCanceling(bool cancelling); |
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154 bool isCanceling(); |
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155 |
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156 bool parseVersitDocument(LineReader& device, |
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157 QVersitDocument& document, |
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158 bool foundBegin = false); |
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159 |
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160 QVersitProperty parseNextVersitProperty( |
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161 QVersitDocument::VersitType versitType, |
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162 LineReader& lineReader); |
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163 |
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164 void parseVCard21Property( |
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165 VersitCursor& text, |
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166 QVersitProperty& property, |
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167 LineReader& lineReader); |
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168 |
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169 void parseVCard30Property( |
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170 VersitCursor& text, |
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171 QVersitProperty& property, |
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172 LineReader& lineReader); |
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173 |
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174 bool setVersionFromProperty( |
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175 QVersitDocument& document, |
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176 const QVersitProperty& property) const; |
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177 |
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178 bool unencode( |
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179 QByteArray& value, |
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180 VersitCursor& cursor, |
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181 QVersitProperty& property, |
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182 LineReader& lineReader) const; |
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183 |
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184 QString decodeCharset( |
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185 const QByteArray& value, |
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186 QVersitProperty& property, |
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187 QTextCodec* defaultCodec, |
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188 QTextCodec** codec) const; |
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189 |
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190 void decodeQuotedPrintable(QByteArray& text) const; |
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191 |
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192 |
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193 /* These functions operate on a cursor describing a single line */ |
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194 QPair<QStringList,QString> extractPropertyGroupsAndName(VersitCursor& line, QTextCodec* codec) |
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195 const; |
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196 QByteArray extractPropertyValue(VersitCursor& line) const; |
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197 QMultiHash<QString,QString> extractVCard21PropertyParams(VersitCursor& line, QTextCodec* codec) |
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198 const; |
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199 QMultiHash<QString,QString> extractVCard30PropertyParams(VersitCursor& line, QTextCodec* codec) |
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200 const; |
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201 |
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202 // "Private" functions |
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203 QList<QByteArray> extractParams(VersitCursor& line, QTextCodec *codec) const; |
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204 QList<QByteArray> extractParts(const QByteArray& text, const QByteArray& separator, |
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205 QTextCodec *codec) const; |
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206 QByteArray extractPart(const QByteArray& text, int startPosition, int length=-1) const; |
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207 QString paramName(const QByteArray& parameter, QTextCodec* codec) const; |
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208 QString paramValue(const QByteArray& parameter, QTextCodec* codec) const; |
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209 static bool containsAt(const QByteArray& text, const QByteArray& ba, int index); |
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210 bool splitStructuredValue(QVersitProperty& property, |
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211 bool hasEscapedBackslashes) const; |
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212 static QStringList splitValue(const QString& string, |
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213 const QChar& sep, |
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214 QString::SplitBehavior behaviour, |
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215 bool hasEscapedBackslashes); |
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216 static void removeBackSlashEscaping(QString& text); |
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217 |
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218 public: // Data |
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219 /* key is the document type and property name, value is the type of property it is. |
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220 If there is no entry, assume it is a PlainType */ |
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221 QHash<QPair<QVersitDocument::VersitType,QString>, QVersitProperty::ValueType> mValueTypeMap; |
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222 QPointer<QIODevice> mIoDevice; |
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223 QScopedPointer<QBuffer> mInputBytes; // Holds the data set by setData() |
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224 QList<QVersitDocument> mVersitDocuments; |
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225 int mDocumentNestingLevel; // Depth in parsing nested Versit documents |
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226 QTextCodec* mDefaultCodec; |
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227 QVersitReader::State mState; |
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228 QVersitReader::Error mError; |
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229 bool mIsCanceling; |
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230 mutable QMutex mMutex; |
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231 }; |
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232 |
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233 QTM_END_NAMESPACE |
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234 |
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235 #endif // QVERSITREADER_P_H |