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annotate engine/core/vfs/raw/rawdata.h @ 697:ecaa4d98f05f tip

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Abstracted the GUI code and refactored the GUIChan-specific code into its own module. * Most of the GUIChan code has been refactored into its own gui/guichan module. However, references to the GuiFont class still persist in the Engine and GuiManager code and these will need further refactoring. * GuiManager is now an abstract base class which specific implementations (e.g. GUIChan) should subclass. * The GUIChan GUI code is now a concrete implementation of GuiManager, most of which is in the new GuiChanGuiManager class. * The GUI code in the Console class has been refactored out of the Console and into the GUIChan module as its own GuiChanConsoleWidget class. The rest of the Console class related to executing commands was left largely unchanged. * Existing client code may need to downcast the GuiManager pointer received from FIFE::Engine::getGuiManager() to GuiChanGuiManager, since not all functionality is represented in the GuiManager abstract base class. Python client code can use the new GuiChanGuiManager.castTo static method for this purpose.
author M. George Hansen <technopolitica@gmail.com>
date Sat, 18 Jun 2011 00:28:40 -1000
parents 90005975cdbb
children
rev   line source
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_VFS_RAW_RAWDATA_H
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23 #define FIFE_VFS_RAW_RAWDATA_H
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24
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25 // Standard C++ library includes
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26 #include <vector>
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27
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28 // Platform specific includes
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29 #include "util/base/fife_stdint.h"
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30
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31 // 3rd party library includes
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32 #include <boost/shared_ptr.hpp>
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33
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34 // FIFE includes
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35 // These includes are split up in two parts, separated by one empty line
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36 // First block: files included from the FIFE root src directory
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37 // Second block: files included from the same folder
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38
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39 #include "rawdatasource.h"
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40
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41 namespace FIFE {
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42
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43 /** Used to access diffrent kinds of data.
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44 *
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45 * RawData uses RawDataSource to get the real data - that way the user doesn't have to know where the data comes
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46 * from (real files, files inside archives etc.)
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47 */
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48 class RawData {
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49 public:
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50 RawData(RawDataSource* datasource);
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51 virtual ~RawData();
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52
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53 /** get the data as a vector of bytes
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54 */
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55 std::vector<uint8_t> getDataInBytes();
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56
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57 /** get the data in distinct lines
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58 */
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59 std::vector<std::string> getDataInLines();
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60
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61
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62 /** get the complete datalength
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63 *
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64 * @return the complete datalength
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65 */
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66 unsigned int getDataLength() const;
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67
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68 /** get the current index
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69 *
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70 * @return the current index
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71 */
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72 unsigned int getCurrentIndex() const;
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73
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74 /** set the current index
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75 *
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76 * @param index the new index
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77 * @throws IndexOverflow if index is >= getDataLength()
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78 */
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79 void setIndex(unsigned int index);
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80
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81 /** move the current index
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82 *
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83 * @param offset the offset
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84 * @throws IndexOverflow if we move outside the datalength
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85 */
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86 void moveIndex(int offset);
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87
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88 /** helper-function
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89 *
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90 * reads sizeof(T) bytes - should be used with fixed-size datatypes like uint32_t, uint16_t, uint8_t etc.
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91 * @return the data
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92 */
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93 template <typename T> T readSingle() {
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94 T val;
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95 readInto(reinterpret_cast<uint8_t*>(&val), sizeof(T));
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96 return val;
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97 }
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98
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99 /** read len bytes into buffer
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100 *
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101 * @param buffer the data will be written into it
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102 * @param len len bytes will be written
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103 * @throws IndexOverflow if currentindex + len > getCurrentIndex()
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104 */
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105 void readInto(uint8_t* buffer, size_t len);
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106
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107 /** reads 1 byte */
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108 uint8_t read8();
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109
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110 /** reads a uint16_t littleEndian and converts them to the host-byteorder
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111 * @throws IndexOverflow
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112 */
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113 uint16_t read16Little();
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114
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115 /** reads a uint16_t littleEndian and converts them to the host-byteorder
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116 *
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117 * @throws IndexOverflow
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118 */
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119 uint32_t read32Little();
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120
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121 /** reads a uint16_t bigEndian and converts them to the host-byteorder
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122 *
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123 * @throws IndexOverflow
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124 */
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125 uint16_t read16Big();
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126
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127 /** reads a uint16_t bigEndian and converts them to the host-byteorder
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128 *
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129 * @throws IndexOverflow
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130 */
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131 uint32_t read32Big();
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132
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133 /** read a string with len bytes, not assuming a terminating 0
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134 *
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135 * @param len the stringlen
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136 * @return the string
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137 * @throws IndexOverflow
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138 */
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139 std::string readString(size_t len);
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140
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141 /** Reads all data into the buffer
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142 * Created to especially fulfill python file interface requirements
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143 */
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144 void read(std::string& outbuffer, int size=-1);
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145
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146 /** reads until a \\n is encountered or no more data is available
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147 *
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148 * @param buffer if successfull the new string will be assigned to buffer
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149 * @return true if data was available, false otherwise (in that case buffer won't be touched)
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150 */
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151 bool getLine(std::string& buffer);
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152
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153 private:
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154 RawDataSource* m_datasource;
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155 size_t m_index_current;
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156
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157 template <typename T> T littleToHost(T value) const {
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158 if (littleEndian())
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159 return value;
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160 else
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161 return revert(value);
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162 }
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163
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164 template <typename T> T bigToHost(T value) const {
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165 if (!littleEndian())
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166 return value;
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167 else
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168 return revert(value);
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169 }
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170
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171 template <typename T> T revert(T value) const {
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172 T retval;
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173 for (unsigned int i = 0; i < sizeof(T); ++i)
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174 reinterpret_cast<uint8_t*>(&retval)[i] = reinterpret_cast<uint8_t*>(&value)[sizeof(T)-1-i];
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175
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176 return retval;
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177 }
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178
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179 RawData(const RawData&);
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180 RawData& operator=(const RawData&) { return *this; };
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181
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182 static bool littleEndian();
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183 };
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184 typedef boost::shared_ptr<RawData> RawDataPtr;
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185
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186 class IndexSaver {
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187 public:
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188 IndexSaver(RawData* d) : m_rd(d), m_index(m_rd->getCurrentIndex()) {}
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189
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190 ~IndexSaver() {
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191 m_rd->setIndex(m_index);
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192 }
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193
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194 private:
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195 RawData* m_rd;
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196 unsigned int m_index;
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197
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198 IndexSaver(const IndexSaver&);
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199 IndexSaver& operator=(const IndexSaver&) { return *this; }
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200 };
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201
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202 }//FIFE
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203
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204 #endif