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annotate Framework/Toolbox/GenericToolbox.h @ 1080:287ec78f63b4

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GenericToolbox (fast c-string --> double or integer) + refactoring to be able to set structures lut into configurator + fixed missing revision bump in configurator + UT
author Benjamin Golinvaux <bgo@osimis.io>
date Mon, 21 Oct 2019 16:01:29 +0200
parents
children 6cf58788f37f 141593f1aa88
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1080
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21 #pragma once
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22
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23 #include <string>
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24
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25 namespace OrthancStone
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26 {
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27 namespace GenericToolbox
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28 {
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29 inline bool LegitDoubleString(const char* text)
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30 {
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31 const char* p = text;
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32 if(*p == '-')
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33 p++;
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34 size_t period = 0;
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35 while(*p != 0)
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36 {
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37 if (*p >= '0' && *p <= '9')
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38 ++p;
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39 else if(*p == '.')
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40 {
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41 if(period > 0)
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42 return false;
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43 else
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44 period++;
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45 ++p;
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46 }
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47 else
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48 return false;
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49 }
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50 return true;
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51 }
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52
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53 inline bool LegitIntegerString(const char* text)
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54 {
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55 const char* p = text;
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56 if (*p == '-')
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57 p++;
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58 while (*p != 0)
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59 {
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60 if (*p >= '0' && *p <= '9')
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61 ++p;
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62 else
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63 return false;
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64 }
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65 return true;
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66 }
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67
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68 /*
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69 String to doubles with at most 18 digits
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70 */
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71 inline bool StringToDouble(double& r, const char* text)
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72 {
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73 if(!LegitDoubleString(text))
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74 return false;
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75
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76 static const double FRAC_FACTORS[] =
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77 {
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78 1.0,
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79 0.1,
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80 0.01,
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81 0.001,
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82 0.0001,
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83 0.00001,
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84 0.000001,
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85 0.0000001,
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86 0.00000001,
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87 0.000000001,
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88 0.0000000001,
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89 0.00000000001,
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90 0.000000000001,
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91 0.0000000000001,
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92 0.00000000000001,
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93 0.000000000000001,
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94 0.0000000000000001,
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95 0.00000000000000001,
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96 0.000000000000000001,
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97 0.0000000000000000001
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98 };
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99 const size_t FRAC_FACTORS_LEN = sizeof(FRAC_FACTORS)/sizeof(double);
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100
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101 r = 0.0;
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102 double neg = 1.0;
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103 const char* p = text;
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104
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105 if (*p == '-')
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106 {
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107 neg = -1.0;
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108 ++p;
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109 }
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110 // 12345.67890
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111 while (*p >= '0' && *p <= '9')
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112 {
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113 r = (r*10.0) + (*p - '0'); // 1 12 123 123 12345
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114 ++p;
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115 }
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116 if (*p == '.')
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117 {
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118 double f = 0.0;
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119 int n = 1;
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120 ++p;
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121 while (*p >= '0' && *p <= '9' && n < FRAC_FACTORS_LEN)
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122 {
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123 f += (*p - '0') * FRAC_FACTORS[n];
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124 ++p;
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125 ++n;
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126 }
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127 r += f;
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128 }
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129 r *= neg;
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130 if (*p == 0 || (*p >= '0' && *p <= '9') )
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131 return true;
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132 else
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133 return false;
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134 }
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135
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136 inline bool StringToDouble(double& r, const std::string& text)
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137 {
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138 return StringToDouble(r, text.c_str());
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139 }
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140
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141 template<typename T>
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142 inline bool StringToInteger(T& r, const char* text)
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143 {
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144 if (!LegitDoubleString(text))
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145 return false;
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146
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147 r = 0;
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148 T neg = 1;
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149 const char* p = text;
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150
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151 if (*p == '-')
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152 {
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153 neg = -1;
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154 ++p;
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155 }
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156 while (*p >= '0' && *p <= '9')
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157 {
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158 r = (r * 10) + (*p - '0'); // 1 12 123 123 12345
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159 ++p;
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160 }
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161 r *= neg;
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162 if (*p == 0)
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163 return true;
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164 else
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165 return false;
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166 }
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167
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168 template<typename T>
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169 inline bool StringToInteger(T& r, const std::string& text)
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170 {
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171 return StringToInteger<T>(r, text.c_str());
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172 }
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173
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174 /**
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175 "rgb(12,23,255)" --> red, green, blue and returns true
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176 "everything else" --> returns false (other values left untouched)
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177 */
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178 bool GetRgbValuesFromString(uint8_t& red, uint8_t& green, uint8_t& blue, const char* text);
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179
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180 /**
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181 See other overload
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182 */
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183 inline bool GetRgbValuesFromString(uint8_t& red, uint8_t& green, uint8_t& blue, const std::string& text)
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184 {
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185 return GetRgbValuesFromString(red, green, blue, text.c_str());
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186 }
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187
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188 bool GetRgbaValuesFromString(uint8_t& red, uint8_t& green, uint8_t& blue, uint8_t& alpha, const char* text);
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189
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190 inline bool GetRgbaValuesFromString(uint8_t& red, uint8_t& green, uint8_t& blue, uint8_t& alpha, const std::string& text)
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191 {
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192 return GetRgbaValuesFromString(red, green, blue, alpha, text.c_str());
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193 }
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194 }
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195 }