Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Toolbox/GenericToolbox.h @ 1723:81273beabc9f
refactoring: WebAssemblyOracle::ProcessFetchResult()
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 01 Dec 2020 16:54:01 +0100 |
parents | 5b8b88e5bfd6 |
children | 9ac2a65d4172 |
rev | line source |
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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) 2017-2020 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 Lesser 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 * Lesser 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 Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 #pragma once |
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23 |
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24 #include <Compatibility.h> |
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25 #include <OrthancException.h> |
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26 |
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27 #include <boost/shared_ptr.hpp> |
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28 |
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29 #include <string> |
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30 #include <stdint.h> |
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31 #include <math.h> |
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32 |
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33 #include <memory> |
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34 |
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35 namespace OrthancStone |
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36 { |
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37 namespace GenericToolbox |
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38 { |
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39 /** |
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40 Fast floating point string validation. |
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41 No trimming applied, so the input must match regex |
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42 /^[-]?[0-9]*\.?[0-9]*([eE][-+]?[0-9]+)?$/ |
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43 The following are allowed as edge cases: "" and "-" |
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44 */ |
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45 inline bool LegitDoubleString(const char* text) |
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46 { |
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47 const char* p = text; |
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48 if(*p == '-') |
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49 p++; |
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50 size_t period = 0; |
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51 while(*p != 0) |
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52 { |
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53 if (*p >= '0' && *p <= '9') |
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54 ++p; |
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55 else if(*p == '.') |
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56 { |
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57 if(period > 0) |
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58 return false; |
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59 else |
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60 period++; |
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61 ++p; |
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62 } |
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63 else if (*p == 'e' || *p == 'E') |
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64 { |
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65 ++p; |
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66 if (*p == '-' || *p == '+') |
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67 ++p; |
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68 // "e+"/"E+" "e-"/"E-" or "e"/"E" must be followed by a number |
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69 if (!(*p >= '0' && *p <= '9')) |
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70 return false; |
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71 |
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72 // these must be the last in the string |
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73 while(*p >= '0' && *p <= '9') |
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74 ++p; |
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75 |
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76 return (*p == 0); |
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77 } |
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78 else |
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79 { |
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80 return false; |
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81 } |
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82 } |
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83 return true; |
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84 } |
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85 |
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86 /** |
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87 Fast integer string validation. |
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88 No trimming applied, so the input must match regex /^-?[0-9]*$/ |
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89 The following are allowed as edge cases: "" and "-" |
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90 */ |
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91 inline bool LegitIntegerString(const char* text) |
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92 { |
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93 const char* p = text; |
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94 if (*p == '-') |
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95 p++; |
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96 while (*p != 0) |
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97 { |
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98 if (*p >= '0' && *p <= '9') |
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99 ++p; |
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100 else |
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101 return false; |
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102 } |
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103 return true; |
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104 } |
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105 |
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106 /* |
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107 Fast string --> double conversion. |
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108 Must pass the LegitDoubleString test |
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109 |
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110 String to doubles with at most 18 digits |
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111 */ |
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112 inline bool StringToDouble(double& r, const char* text) |
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113 { |
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114 if(!LegitDoubleString(text)) |
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115 return false; |
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116 |
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117 static const double FRAC_FACTORS[] = |
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118 { |
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119 1.0, |
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120 0.1, |
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121 0.01, |
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122 0.001, |
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123 0.0001, |
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124 0.00001, |
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125 0.000001, |
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126 0.0000001, |
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127 0.00000001, |
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128 0.000000001, |
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129 0.0000000001, |
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130 0.00000000001, |
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131 0.000000000001, |
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132 0.0000000000001, |
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133 0.00000000000001, |
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134 0.000000000000001, |
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135 0.0000000000000001, |
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136 0.00000000000000001, |
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137 0.000000000000000001, |
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138 0.0000000000000000001 |
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139 }; |
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140 const size_t FRAC_FACTORS_LEN = sizeof(FRAC_FACTORS)/sizeof(double); |
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141 |
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142 r = 0.0; |
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143 double neg = 1.0; |
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144 const char* p = text; |
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145 |
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146 if (*p == '-') |
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147 { |
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148 neg = -1.0; |
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149 ++p; |
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150 } |
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151 // 12345.67890 |
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152 while (*p >= '0' && *p <= '9') |
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153 { |
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154 r = (r*10.0) + (*p - '0'); // 1 12 123 123 12345 |
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155 ++p; |
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156 } |
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157 if (*p == '.') |
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158 { |
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159 double f = 0.0; |
1192 | 160 size_t n = 1; |
1080
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161 ++p; |
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162 while (*p >= '0' && *p <= '9' && n < FRAC_FACTORS_LEN) |
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163 { |
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164 f += (*p - '0') * FRAC_FACTORS[n]; |
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165 ++p; |
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166 ++n; |
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167 } |
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168 r += f; |
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169 } |
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170 r *= neg; |
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171 |
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172 // skip the remaining numbers until we reach not-a-digit (either the |
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173 // end of the string OR the scientific notation symbol) |
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174 while ((*p >= '0' && *p <= '9')) |
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175 ++p; |
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176 |
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177 if (*p == 0 ) |
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178 { |
1080
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179 return true; |
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180 } |
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181 else if ((*p == 'e') || (*p == 'E')) |
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182 { |
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183 // process the scientific notation |
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184 double sign; // no init is safe (read below) |
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185 ++p; |
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186 if (*p == '-') |
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187 { |
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188 sign = -1.0; |
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189 // point to first number |
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190 ++p; |
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191 } |
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192 else if (*p == '+') |
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193 { |
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194 sign = 1.0; |
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195 // point to first number |
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196 ++p; |
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197 } |
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198 else if (*p >= '0' && *p <= '9') |
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199 { |
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200 sign = 1.0; |
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201 } |
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202 else |
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203 { |
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204 // only a sign char or a number is allowed |
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205 return false; |
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206 } |
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207 // now p points to the absolute value of the exponent |
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208 double exp = 0; |
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209 while (*p >= '0' && *p <= '9') |
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210 { |
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211 exp = (exp * 10.0) + static_cast<double>(*p - '0'); // 1 12 123 123 12345 |
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212 ++p; |
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213 } |
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214 // now we have our exponent. put a sign on it. |
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215 exp *= sign; |
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216 double scFac = ::pow(10.0, exp); |
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217 r *= scFac; |
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218 |
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219 // only allowed symbol here is EOS |
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220 return (*p == 0); |
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221 } |
1080
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222 else |
1166
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223 { |
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224 // not allowed |
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225 return false; |
1166
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226 } |
1080
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227 } |
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228 |
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229 inline bool StringToDouble(double& r, const std::string& text) |
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230 { |
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231 return StringToDouble(r, text.c_str()); |
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232 } |
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233 |
1306
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234 /** |
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235 Fast string to integer conversion. Leading zeroes and minus are accepted, |
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236 but a leading + sign is NOT. |
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237 Must pass the LegitIntegerString function test. |
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238 In addition, an empty string (or lone minus sign) yields 0. |
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239 */ |
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240 |
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241 template<typename T> |
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242 inline bool StringToInteger(T& r, const char* text) |
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243 { |
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244 if (!LegitIntegerString(text)) |
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245 return false; |
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246 |
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247 r = 0; |
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248 T neg = 1; |
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249 const char* p = text; |
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250 |
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251 if (*p == '-') |
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252 { |
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253 neg = -1; |
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254 ++p; |
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255 } |
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256 while (*p >= '0' && *p <= '9') |
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257 { |
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258 r = (r * 10) + static_cast<T>(*p - '0'); // 1 12 123 123 12345 |
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259 ++p; |
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260 } |
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261 r *= neg; |
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262 if (*p == 0) |
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263 return true; |
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264 else |
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265 return false; |
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266 } |
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267 |
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268 template<typename T> |
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269 inline bool StringToInteger(T& r, const std::string& text) |
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270 { |
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271 return StringToInteger<T>(r, text.c_str()); |
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272 } |
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273 |
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274 /** |
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275 if input is "rgb(12,23,255)" --> function fills `red`, `green` and `blue` and returns true |
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276 else ("everything else") --> function returns false and leaves all values untouched |
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277 */ |
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278 bool GetRgbValuesFromString(uint8_t& red, uint8_t& green, uint8_t& blue, const char* text); |
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279 |
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280 /** |
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281 See main overload |
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282 */ |
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283 inline bool GetRgbValuesFromString(uint8_t& red, uint8_t& green, uint8_t& blue, const std::string& text) |
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284 { |
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285 return GetRgbValuesFromString(red, green, blue, text.c_str()); |
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286 } |
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287 |
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288 /** |
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289 Same as GetRgbValuesFromString |
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290 */ |
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291 bool GetRgbaValuesFromString(uint8_t& red, |
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292 uint8_t& green, |
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293 uint8_t& blue, |
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294 uint8_t& alpha, |
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295 const char* text); |
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296 |
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297 /** |
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298 Same as GetRgbValuesFromString |
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299 */ |
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300 inline bool GetRgbaValuesFromString(uint8_t& red, |
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301 uint8_t& green, |
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302 uint8_t& blue, |
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303 uint8_t& alpha, |
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304 const std::string& text) |
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305 { |
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306 return GetRgbaValuesFromString(red, green, blue, alpha, text.c_str()); |
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307 } |
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308 |
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309 |
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310 /** |
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311 This method could have been called StripSpacesAndChangeToLower but we might want to |
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312 add some UUID validation to the argument |
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313 */ |
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314 void NormalizeUuid(std::string& uuid); |
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315 } |
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316 } |