1 | /* |
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2 | orxonox - the future of 3D-vertical-scrollers |
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3 | |
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4 | Copyright (C) 2004 orx |
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5 | |
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6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | ### File Specific: |
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12 | main-programmer: Benjamin Grauer |
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13 | co-programmer: Christian Meyer |
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14 | |
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15 | 2005-08-14: complete reimplementation: |
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16 | now the File is parsed at the initialisation, |
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17 | and informations is gathered there. |
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18 | */ |
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19 | |
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20 | |
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21 | #include "ini_parser.h" |
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22 | |
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23 | #include <stdlib.h> |
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24 | #include <string.h> |
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25 | |
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26 | #if HAVE_CONFIG_H |
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27 | #include <config.h> |
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28 | #endif |
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29 | |
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30 | #ifdef DEBUG |
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31 | #include "../../../defs/debug.h" |
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32 | #else |
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33 | #define PRINTF(x) printf |
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34 | #endif |
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35 | |
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36 | using namespace std; |
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37 | |
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38 | /** |
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39 | * @brief constructs an IniParser using a file |
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40 | * @param fileName: the path and name of the file to parse |
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41 | */ |
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42 | IniParser::IniParser (const char* fileName) |
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43 | { |
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44 | this->fileName = NULL; |
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45 | this->comment = NULL; |
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46 | |
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47 | if (fileName != NULL) |
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48 | this->readFile(fileName); |
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49 | } |
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50 | |
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51 | |
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52 | /** |
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53 | * @brief removes the IniParser from memory |
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54 | */ |
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55 | IniParser::~IniParser () |
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56 | { |
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57 | this->deleteSections(); |
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58 | } |
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59 | |
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60 | |
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61 | /** |
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62 | * @brief removes all the sections. This is like delete, but even cooler :) |
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63 | */ |
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64 | void IniParser::deleteSections() |
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65 | { |
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66 | // in all sections |
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67 | while(!this->sections.empty()) |
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68 | { |
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69 | IniSection section = this->sections.front(); |
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70 | |
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71 | // in all entries of the sections |
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72 | while(!section.entries.empty()) |
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73 | { |
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74 | // delete all strings of entries. |
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75 | IniEntry entry = section.entries.front(); |
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76 | delete []entry.name; |
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77 | delete []entry.value; |
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78 | section.entries.pop_front(); |
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79 | } |
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80 | // delete all Sections |
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81 | delete []section.name; |
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82 | this->sections.pop_front(); |
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83 | } |
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84 | this->currentSection = this->sections.end(); |
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85 | this->setFileName(NULL); |
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86 | } |
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87 | |
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88 | |
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89 | /** |
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90 | * @brief sets the Name of the input-file |
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91 | * @param fileName The new FileName to set to the IniParser |
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92 | * If fileName is NULL the new Name will be set to NULL too. |
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93 | */ |
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94 | void IniParser::setFileName(const char* fileName) |
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95 | { |
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96 | if (this->fileName) |
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97 | delete []this->fileName; |
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98 | if (fileName != NULL) |
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99 | { |
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100 | this->fileName = new char[strlen(fileName)+1]; |
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101 | strcpy(this->fileName, fileName); |
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102 | } |
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103 | else |
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104 | this->fileName = NULL; |
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105 | } |
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106 | |
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107 | |
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108 | /** |
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109 | * @brief opens a file to parse |
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110 | * @param fileName: path and name of the new file to parse |
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111 | * @return true on success false otherwise; |
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112 | * |
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113 | * If there was already an opened file, the file will be closed, |
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114 | * and the new one will be opened. |
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115 | */ |
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116 | bool IniParser::readFile(const char* fileName) |
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117 | { |
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118 | FILE* stream; //< The stream we use to read the file. |
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119 | int lineCount = 0; //< The Count of lines. |
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120 | |
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121 | |
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122 | if (this->fileName != NULL) |
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123 | this->deleteSections(); |
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124 | if( fileName == NULL) |
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125 | return false; |
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126 | |
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127 | if( (stream = fopen (fileName, "r")) == NULL) |
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128 | { |
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129 | PRINTF(1)("IniParser could not open %s\n", fileName); |
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130 | return false; |
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131 | } |
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132 | else |
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133 | { |
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134 | this->setFileName(fileName); |
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135 | |
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136 | ///////////////////////////// |
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137 | // READING IN THE INI-FILE // |
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138 | ///////////////////////////// |
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139 | char lineBuffer[PARSELINELENGHT]; |
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140 | char buffer[PARSELINELENGHT]; |
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141 | const char* lineBegin; |
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142 | char* ptr; |
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143 | |
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144 | while( fgets (lineBuffer, PARSELINELENGHT, stream)) |
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145 | { |
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146 | lineBegin = lineBuffer; |
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147 | // remove newline char, and \0-terminate |
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148 | if( (ptr = strchr( lineBuffer, '\n')) != NULL) |
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149 | *ptr = 0; |
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150 | // cut up to the beginning of the line. |
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151 | while((*lineBegin == ' ' || *lineBegin == '\t') && lineBegin < lineBuffer + strlen(lineBuffer)) |
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152 | ++lineBegin; |
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153 | |
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154 | // check if we have a FileComment |
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155 | if ( (*lineBegin == '#' || *lineBegin == ';')) |
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156 | { |
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157 | char* newCommenLine = new char[strlen(lineBegin)+1]; |
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158 | strcpy(newCommenLine, lineBegin); |
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159 | this->commentList.push_back(newCommenLine); |
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160 | continue; |
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161 | } |
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162 | if (lineCount == 0 && !this->commentList.empty()) |
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163 | { |
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164 | this->setFileComment(); |
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165 | lineCount++; |
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166 | } |
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167 | |
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168 | // check for section identifyer |
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169 | else if( sscanf (lineBegin, "[%s", buffer) == 1) |
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170 | { |
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171 | if( (ptr = strchr( buffer, ']')) != NULL) |
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172 | { |
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173 | *ptr = 0; |
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174 | this->addSection(buffer); |
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175 | this->setSectionComment(); |
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176 | } |
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177 | } |
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178 | // check for Entry identifier (Entry = Value) |
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179 | else if( (ptr = strchr( lineBegin, '=')) != NULL) |
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180 | { |
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181 | if (currentSection == NULL) |
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182 | { |
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183 | PRINTF(2)("Not in a Section yet for %s\n", lineBegin); |
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184 | lineCount++; |
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185 | continue; |
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186 | } |
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187 | if( ptr == lineBegin) { |
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188 | lineCount++; |
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189 | continue; |
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190 | } |
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191 | char* valueBegin = ptr+1; |
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192 | while ((*valueBegin == ' ' || *valueBegin == '\t') && valueBegin <= lineBegin + strlen(lineBegin)) |
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193 | ++valueBegin; |
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194 | char* valueEnd = valueBegin + strlen(valueBegin)-1; |
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195 | while ((*valueEnd == ' ' || *valueEnd == '\t') && valueEnd >= valueBegin) |
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196 | --valueEnd; |
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197 | valueEnd[1] = '\0'; |
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198 | char* nameEnd = ptr-1; |
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199 | while ((*nameEnd == ' ' || *nameEnd == '\t' ) && nameEnd >= lineBegin) |
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200 | --nameEnd; |
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201 | nameEnd[1] = '\0'; |
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202 | |
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203 | this->addVar(lineBegin, valueBegin); |
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204 | this->setEntryComment(); |
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205 | |
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206 | lineCount++; |
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207 | } |
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208 | } |
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209 | } |
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210 | this->currentSection = this->sections.begin(); |
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211 | if (!this->sections.empty()) |
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212 | this->currentEntry = (*this->currentSection).entries.begin(); |
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213 | |
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214 | fclose(stream); |
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215 | return true; |
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216 | } |
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217 | |
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218 | |
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219 | /** |
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220 | * @brief opens a file and writes to it |
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221 | * @param fileName: path and name of the new file to write to |
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222 | * @return true on success false otherwise |
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223 | */ |
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224 | bool IniParser::writeFile(const char* fileName) const |
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225 | { |
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226 | FILE* stream; //!< The stream we use to read the file. |
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227 | if( fileName == NULL && (fileName = this->fileName) == NULL ) |
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228 | return false; |
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229 | |
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230 | if( (stream = fopen (fileName, "w")) == NULL) |
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231 | { |
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232 | PRINTF(1)("IniParser could not open %s\n", fileName); |
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233 | return false; |
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234 | } |
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235 | else |
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236 | { |
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237 | std::list<IniSection>::const_iterator section; |
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238 | for (section = this->sections.begin(); section != this->sections.end(); section++) |
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239 | { |
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240 | fprintf(stream, "\n [%s]\n", (*section).name); |
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241 | |
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242 | std::list<IniEntry>::const_iterator entry; |
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243 | for (entry = (*section).entries.begin(); entry != (*section).entries.end(); entry++) |
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244 | fprintf(stream, " %s = %s\n", (*entry).name, (*entry).value); |
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245 | } |
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246 | } |
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247 | fclose(stream); |
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248 | } |
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249 | |
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250 | void IniParser::setFileComment(const char* fileComment) |
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251 | { |
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252 | if (this->comment != NULL) |
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253 | delete this->comment; |
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254 | |
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255 | if (fileComment != NULL) |
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256 | { |
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257 | this->comment = new char[strlen(fileComment)+1]; |
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258 | strcpy(this->comment, fileComment); |
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259 | } |
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260 | else |
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261 | this->comment = NULL; |
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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 | * @brief adds a section to the list of Sections, |
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267 | * if no Section list is availiable, it will create it |
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268 | * @param sectionName the Name of the section to add |
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269 | * @return true on success... there is only success or segfault :) |
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270 | */ |
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271 | bool IniParser::addSection(const char* sectionName) |
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272 | { |
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273 | this->sections.push_back(IniSection()); |
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274 | this->sections.back().comment = NULL; |
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275 | this->sections.back().name = new char[strlen(sectionName)+1]; |
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276 | strcpy(this->sections.back().name, sectionName); |
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277 | |
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278 | this->currentSection = --this->sections.end(); |
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279 | if (!this->sections.empty()) |
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280 | this->currentEntry = (*this->currentSection).entries.begin(); |
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281 | PRINTF(5)("Added Section %s\n", sectionName); |
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282 | return true; |
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283 | } |
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284 | |
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285 | |
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286 | /** |
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287 | * @brief Set the parsing cursor to the specified section |
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288 | * @param sectionName: the name of the section to set the cursor to |
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289 | * @return true on success or false if the section could not be found |
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290 | */ |
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291 | bool IniParser::getSection(const char* sectionName) |
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292 | { |
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293 | std::list<IniSection>::iterator section; |
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294 | for (section = this->sections.begin(); section != this->sections.end(); section++) |
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295 | if (!strcmp((*section).name, sectionName)) |
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296 | { |
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297 | this->currentSection = section; |
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298 | this->currentEntry = (*this->currentSection).entries.begin(); |
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299 | return true; |
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300 | } |
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301 | return false; |
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302 | } |
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303 | |
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304 | /** |
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305 | * |
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306 | */ |
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307 | void IniParser::setSectionComment(const char* comment, const char* sectionName) |
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308 | { |
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309 | |
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310 | |
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311 | } |
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312 | |
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313 | /** |
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314 | * |
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315 | */ |
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316 | const char* IniParser::getSectionComment(const char* sectionName) const |
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317 | { |
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318 | |
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319 | } |
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320 | |
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321 | |
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322 | /** |
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323 | * @brief moves to the first section |
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324 | */ |
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325 | void IniParser::firstSection() |
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326 | { |
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327 | this->currentSection = this->sections.begin(); |
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328 | if (!this->sections.empty()) |
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329 | this->currentEntry = (*this->currentSection).entries.begin(); |
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330 | } |
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331 | |
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332 | |
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333 | /** |
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334 | * @brief searches the next section |
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335 | * @returns the name of the section if found, NULL otherwise |
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336 | */ |
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337 | const char* IniParser::nextSection() |
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338 | { |
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339 | if (this->currentSection == this->sections.end()) |
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340 | return NULL; |
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341 | |
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342 | this->currentSection++; |
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343 | |
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344 | if (this->currentSection != this->sections.end()) |
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345 | { |
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346 | this->currentEntry = (*this->currentSection).entries.begin(); |
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347 | return this->currentSection->name; |
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348 | } |
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349 | else |
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350 | return NULL; |
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351 | } |
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352 | |
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353 | |
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354 | /** |
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355 | * @brief adds a new Entry to either the currentSection or the section called by sectionName |
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356 | * @param entryName the Name of the Entry to add |
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357 | * @param value the value to assign to this entry |
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358 | * @param sectionName if NULL then this entry will be set to the currentSection |
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359 | * otherwise to the section refered to by sectionName. |
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360 | * If both are NULL no entry will be added |
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361 | * @return true if everything is ok false on error |
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362 | */ |
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363 | bool IniParser::addVar(const char* entryName, const char* value, const char* sectionName) |
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364 | { |
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365 | std::list<IniSection>::iterator section; |
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366 | |
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367 | if (sectionName != NULL) |
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368 | { |
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369 | for (section = this->sections.begin(); section != this->sections.end(); section++) |
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370 | if (!strcmp((*section).name, sectionName)) |
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371 | break; |
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372 | } |
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373 | else |
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374 | section = this->currentSection; |
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375 | |
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376 | if (section == this->sections.end()) |
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377 | return false; |
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378 | |
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379 | if (section == this->sections.end()) |
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380 | { |
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381 | PRINTF(2)("section '%s' not found for value '%s'\n", sectionName, entryName); |
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382 | return false; |
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383 | } |
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384 | else |
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385 | { |
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386 | (*section).entries.push_back(IniEntry()); |
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387 | (*section).entries.back().comment = NULL; |
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388 | (*section).entries.back().name = new char[strlen(entryName)+1]; |
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389 | strcpy((*section).entries.back().name, entryName); |
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390 | (*section).entries.back().value = new char[strlen(value)+1]; |
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391 | strcpy((*section).entries.back().value, value); |
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392 | PRINTF(5)("Added Entry %s with Value '%s' to Section %s\n", |
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393 | (*section).entries.back().name, |
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394 | (*section).entries.back().value, |
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395 | (*section).name); |
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396 | this->currentEntry = --(*section).entries.end(); |
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397 | return true; |
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398 | } |
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399 | } |
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400 | |
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401 | |
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402 | /** |
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403 | * @brief directly acesses an entry in a section |
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404 | * @param entryName: the name of the entry to find |
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405 | * @param sectionName: the section where the entry is to be found |
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406 | * @param defaultValue: what should be returned in case the entry cannot be found |
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407 | * @return a pointer to a buffer conatining the value of the specified entry. This buffer will contain the data specified in defvalue in case the entry wasn't found |
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408 | * |
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409 | * The returned pointer points to an internal buffer, so do not free it on your own. Do not give a NULL pointer to defvalue, this will certainly |
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410 | * lead to unwanted behaviour. |
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411 | */ |
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412 | const char* IniParser::getVar(const char* entryName, const char* sectionName, const char* defaultValue) const |
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413 | { |
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414 | if (this->fileName != NULL) |
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415 | { |
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416 | std::list<IniSection>::const_iterator section = this->getSectionIT(sectionName); |
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417 | |
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418 | if (section == this->sections.end()) |
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419 | { |
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420 | PRINTF(2)("Section %s that should be containing %s not found.\n", sectionName, entryName); |
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421 | return (defaultValue); |
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422 | } |
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423 | |
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424 | std::list<IniEntry>::const_iterator entry; |
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425 | for (entry = (*section).entries.begin(); entry != (*section).entries.end(); entry++) |
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426 | if (!strcmp((*entry).name, entryName)) |
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427 | return (*entry).value; |
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428 | PRINTF(2)("Entry '%s' in section '%s' not found.\n", entryName, sectionName); |
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429 | |
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430 | } |
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431 | else |
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432 | PRINTF(2)("%s not opened\n", fileName); |
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433 | |
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434 | return defaultValue; |
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435 | |
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436 | } |
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437 | |
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438 | /** |
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439 | * Set the Comment of a specified Entry. |
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440 | */ |
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441 | const char* IniParser::setEntryComment(const char* comment, const char* entryName, const char* sectionName) |
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442 | { |
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443 | |
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444 | |
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445 | } |
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446 | |
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447 | /** |
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448 | * |
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449 | */ |
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450 | const char* IniParser::getEntryComment(const char* entryName, const char* sectionName) const |
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451 | { |
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452 | |
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453 | |
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454 | } |
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455 | |
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456 | |
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457 | /** |
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458 | * @brief moves to the first Variable of the current Section |
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459 | */ |
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460 | void IniParser::firstVar() |
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461 | { |
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462 | if (!this->sections.empty() && |
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463 | this->currentSection != this->sections.end()) |
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464 | this->currentEntry = (*this->currentSection).entries.begin(); |
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465 | } |
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466 | |
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467 | |
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468 | /** |
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469 | * @brief gets the next VarName = VarValue pair from the parsing stream |
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470 | * @return true on success, false otherwise (in the latter case name and value will be NULL) |
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471 | */ |
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472 | bool IniParser::nextVar() |
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473 | { |
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474 | if ( this->sections.empty() |
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475 | || this->currentSection == this->sections.end() |
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476 | || this->currentEntry == (*this->currentSection).entries.end()) |
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477 | return false; |
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478 | |
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479 | this->currentEntry++; |
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480 | |
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481 | if (this->currentEntry == (*this->currentSection).entries.end()) |
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482 | return false; |
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483 | else |
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484 | return true; |
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485 | } |
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486 | |
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487 | |
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488 | |
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489 | /** |
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490 | * @returns the name of the Current selected Section |
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491 | */ |
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492 | const char* IniParser::getCurrentSection() const |
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493 | { |
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494 | if (!this->sections.empty() && |
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495 | this->currentSection != this->sections.end()) |
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496 | return this->currentSection->name; |
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497 | else |
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498 | return NULL; |
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499 | } |
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500 | |
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501 | |
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502 | /** |
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503 | * @returns the current entries Name, or NULL if we havn't selected a Entry |
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504 | */ |
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505 | const char* IniParser::getCurrentName() const |
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506 | { |
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507 | if (!this->sections.empty() && |
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508 | this->currentSection != this->sections.end() && |
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509 | this->currentEntry != (*this->currentSection).entries.end()) |
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510 | return (*this->currentEntry).name; |
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511 | else |
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512 | return NULL; |
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513 | } |
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514 | |
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515 | /** |
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516 | * @returns the current entries Value, or NULL if we havn't selected a Entry |
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517 | */ |
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518 | const char* IniParser::getCurrentValue() const |
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519 | { |
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520 | if (!this->sections.empty() && |
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521 | this->currentSection != this->sections.end() && |
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522 | this->currentEntry != (*this->currentSection).entries.end()) |
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523 | return (*this->currentEntry).value; |
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524 | else |
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525 | return NULL; |
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526 | } |
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527 | |
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528 | |
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529 | /** |
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530 | * |
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531 | */ |
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532 | std::list<IniParser::IniSection>::const_iterator IniParser::getSectionIT(const char* sectionName) const |
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533 | { |
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534 | std::list<IniSection>::const_iterator section; |
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535 | if (sectionName != NULL) |
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536 | { |
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537 | for (section = this->sections.begin(); section != this->sections.end(); section++) |
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538 | { |
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539 | if (!strcmp((*section).name, sectionName)) |
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540 | { |
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541 | break; |
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542 | } |
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543 | } |
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544 | } |
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545 | else |
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546 | section = this->currentSection; |
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547 | |
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548 | return section; |
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549 | } |
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550 | |
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551 | /** |
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552 | * |
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553 | */ |
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554 | std::list<IniParser::IniEntry>::const_iterator IniParser::getEntryIT(const char* entryName, const char* sectionName) const |
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555 | { |
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556 | if (entryName == NULL) |
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557 | return this->currentEntry; |
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558 | |
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559 | } |
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560 | |
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561 | |
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562 | |
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563 | /** |
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564 | * takes lines together to form one FileComment, ereasing the commentList |
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565 | */ |
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566 | void IniParser::setFileComment() |
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567 | { |
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568 | if (this->comment != NULL) |
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569 | delete[] this->comment; |
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570 | |
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571 | if (this->commentList.empty()) { |
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572 | this->comment = NULL; |
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573 | return; |
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574 | } |
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575 | |
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576 | unsigned int stringLength = 1; |
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577 | std::list<char*>::iterator comment; |
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578 | for (comment = this->commentList.begin(); comment != this->commentList.end(); comment++) |
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579 | stringLength += strlen((*comment)) +1; |
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580 | |
---|
581 | this->comment = new char[stringLength]; |
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582 | this->comment[0] = '\0'; |
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583 | while (!this->commentList.empty()) |
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584 | { |
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585 | if (*this->comment != '\0') |
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586 | strcat(this->comment, "\n"); |
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587 | strcat(this->comment, this->commentList.front()); |
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588 | delete[] this->commentList.front(); |
---|
589 | this->commentList.pop_front(); |
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590 | } |
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591 | } |
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592 | |
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593 | /** |
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594 | * takes lines together to form one SectionComment, ereasing the commentList |
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595 | */ |
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596 | void IniParser::setSectionComment() |
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597 | { |
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598 | if ((*this->currentSection).comment != NULL) |
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599 | delete[] (*this->currentSection).comment; |
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600 | |
---|
601 | if (this->commentList.empty()) { |
---|
602 | (*this->currentSection).comment = NULL; |
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603 | return; |
---|
604 | } |
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605 | |
---|
606 | unsigned int stringLength = 1; |
---|
607 | std::list<char*>::iterator comment; |
---|
608 | for (comment = this->commentList.begin(); comment != this->commentList.end(); comment++) |
---|
609 | stringLength += strlen((*comment)) +1; |
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610 | |
---|
611 | (*this->currentSection).comment = new char[stringLength]; |
---|
612 | (*this->currentSection).comment[0] = '\0'; |
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613 | while (!this->commentList.empty()) |
---|
614 | { |
---|
615 | if (*(*this->currentSection).comment != '\0') |
---|
616 | strcat((*this->currentSection).comment, "\n"); |
---|
617 | strcat((*this->currentSection).comment, this->commentList.front()); |
---|
618 | delete[] this->commentList.front(); |
---|
619 | this->commentList.pop_front(); |
---|
620 | } |
---|
621 | } |
---|
622 | |
---|
623 | /** |
---|
624 | * takes lines together to form one EntryComment, ereasing the commentList |
---|
625 | */ |
---|
626 | void IniParser::setEntryComment() |
---|
627 | { |
---|
628 | if ((*this->currentEntry).comment != NULL) |
---|
629 | delete[] (*this->currentEntry).comment; |
---|
630 | |
---|
631 | if (this->commentList.empty()) { |
---|
632 | (*this->currentEntry).comment = NULL; |
---|
633 | return; |
---|
634 | } |
---|
635 | |
---|
636 | unsigned int stringLength = 1; |
---|
637 | std::list<char*>::iterator comment; |
---|
638 | for (comment = this->commentList.begin(); comment != this->commentList.end(); comment++) |
---|
639 | stringLength += strlen((*comment)) +1; |
---|
640 | |
---|
641 | (*this->currentEntry).comment = new char[stringLength]; |
---|
642 | (*this->currentEntry).comment[0] = '\0'; |
---|
643 | while (!this->commentList.empty()) |
---|
644 | { |
---|
645 | if (*(*this->currentEntry).comment != '\0') |
---|
646 | strcat((*this->currentEntry).comment, "\n"); |
---|
647 | strcat((*this->currentEntry).comment, this->commentList.front()); |
---|
648 | delete[] this->commentList.front(); |
---|
649 | this->commentList.pop_front(); |
---|
650 | } |
---|
651 | |
---|
652 | } |
---|
653 | |
---|
654 | |
---|
655 | /** |
---|
656 | * @brief output the whole tree in a nice and easy way. |
---|
657 | */ |
---|
658 | void IniParser::debug() const |
---|
659 | { |
---|
660 | PRINTF(0)("Iniparser %s - debug\n", this->fileName); |
---|
661 | if (this->comment != NULL) |
---|
662 | PRINTF(0)("FileComment:\n %s\n\n", this->comment); |
---|
663 | |
---|
664 | if (this->fileName != NULL) |
---|
665 | { |
---|
666 | std::list<IniSection>::const_iterator section; |
---|
667 | for (section = this->sections.begin(); section != this->sections.end(); section++) |
---|
668 | { |
---|
669 | if ((*section).comment != NULL) |
---|
670 | PRINTF(0)(" %s\n", (*section).comment); |
---|
671 | PRINTF(0)(" [%s]\n", (*section).name); |
---|
672 | |
---|
673 | std::list<IniEntry>::const_iterator entry; |
---|
674 | for (entry = (*section).entries.begin(); entry != (*section).entries.end(); entry++) |
---|
675 | { |
---|
676 | if ((*entry).comment != NULL) |
---|
677 | PRINTF(0)(" %s\n", (*entry).comment); |
---|
678 | PRINTF(0)(" '%s' -> '%s'\n", (*entry).name, (*entry).value); |
---|
679 | } |
---|
680 | } |
---|
681 | } |
---|
682 | else |
---|
683 | PRINTF(1)("no opened ini-file.\n"); |
---|
684 | } |
---|
685 | |
---|