Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Toolbox/GenericToolbox.h @ 1591:5887a4f8594b

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moving platform-specific files out of the "OrthancStone" folder
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 23 Oct 2020 13:15:03 +0200
parents 244ad1e4e76a
children 4fb8fdf03314
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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 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 <Compatibility.h>
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24 #include <OrthancException.h>
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25
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26 #include <boost/shared_ptr.hpp>
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27
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28 #include <string>
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29 #include <stdint.h>
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30 #include <math.h>
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31
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32 #include <memory>
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33
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34 namespace OrthancStone
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35 {
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36 namespace GenericToolbox
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37 {
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38 /**
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39 Fast floating point string validation.
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40 No trimming applied, so the input must match regex
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41 /^[-]?[0-9]*\.?[0-9]*([eE][-+]?[0-9]+)?$/
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42 The following are allowed as edge cases: "" and "-"
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43 */
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44 inline bool LegitDoubleString(const char* text)
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45 {
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46 const char* p = text;
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47 if(*p == '-')
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48 p++;
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49 size_t period = 0;
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50 while(*p != 0)
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51 {
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52 if (*p >= '0' && *p <= '9')
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53 ++p;
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54 else if(*p == '.')
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55 {
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56 if(period > 0)
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57 return false;
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58 else
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59 period++;
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60 ++p;
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61 }
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62 else if (*p == 'e' || *p == 'E')
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63 {
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64 ++p;
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65 if (*p == '-' || *p == '+')
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66 ++p;
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67 // "e+"/"E+" "e-"/"E-" or "e"/"E" must be followed by a number
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68 if (!(*p >= '0' && *p <= '9'))
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69 return false;
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70
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71 // these must be the last in the string
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72 while(*p >= '0' && *p <= '9')
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73 ++p;
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74
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75 return (*p == 0);
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76 }
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77 else
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78 {
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79 return false;
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80 }
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81 }
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82 return true;
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83 }
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84
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85 /**
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86 Fast integer string validation.
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87 No trimming applied, so the input must match regex /^-?[0-9]*$/
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88 The following are allowed as edge cases: "" and "-"
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89 */
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90 inline bool LegitIntegerString(const char* text)
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91 {
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92 const char* p = text;
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93 if (*p == '-')
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94 p++;
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95 while (*p != 0)
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96 {
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97 if (*p >= '0' && *p <= '9')
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98 ++p;
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99 else
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100 return false;
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101 }
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102 return true;
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103 }
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104
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105 /*
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106 Fast string --> double conversion.
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107 Must pass the LegitDoubleString test
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108
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109 String to doubles with at most 18 digits
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110 */
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111 inline bool StringToDouble(double& r, const char* text)
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112 {
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113 if(!LegitDoubleString(text))
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114 return false;
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115
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116 static const double FRAC_FACTORS[] =
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117 {
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118 1.0,
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119 0.1,
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120 0.01,
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121 0.001,
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122 0.0001,
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123 0.00001,
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124 0.000001,
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125 0.0000001,
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126 0.00000001,
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127 0.000000001,
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128 0.0000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
129 0.00000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
130 0.000000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
131 0.0000000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
132 0.00000000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
133 0.000000000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
134 0.0000000000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
135 0.00000000000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
136 0.000000000000000001,
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
137 0.0000000000000000001
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
138 };
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
139 const size_t FRAC_FACTORS_LEN = sizeof(FRAC_FACTORS)/sizeof(double);
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
140
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
141 r = 0.0;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
142 double neg = 1.0;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
143 const char* p = text;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
144
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
145 if (*p == '-')
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
146 {
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
147 neg = -1.0;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
148 ++p;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
149 }
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
150 // 12345.67890
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
151 while (*p >= '0' && *p <= '9')
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
152 {
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
153 r = (r*10.0) + (*p - '0'); // 1 12 123 123 12345
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
154 ++p;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
155 }
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
156 if (*p == '.')
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
157 {
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
158 double f = 0.0;
1192
91d86144fb79 fix build
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1166
diff changeset
159 size_t n = 1;
1080
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
160 ++p;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
161 while (*p >= '0' && *p <= '9' && n < FRAC_FACTORS_LEN)
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
162 {
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
163 f += (*p - '0') * FRAC_FACTORS[n];
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
164 ++p;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
165 ++n;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
166 }
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
167 r += f;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
168 }
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
169 r *= neg;
1166
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
170
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
171 // skip the remaining numbers until we reach not-a-digit (either the
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
172 // end of the string OR the scientific notation symbol)
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
173 while ((*p >= '0' && *p <= '9'))
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
174 ++p;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
175
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
176 if (*p == 0 )
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
177 {
1080
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
178 return true;
1166
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
179 }
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
180 else if ((*p == 'e') || (*p == 'E'))
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
181 {
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
182 // process the scientific notation
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
183 double sign; // no init is safe (read below)
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
184 ++p;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
185 if (*p == '-')
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
186 {
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
187 sign = -1.0;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
188 // point to first number
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
189 ++p;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
190 }
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
191 else if (*p == '+')
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
192 {
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
193 sign = 1.0;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
194 // point to first number
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
195 ++p;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
196 }
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
197 else if (*p >= '0' && *p <= '9')
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
198 {
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
199 sign = 1.0;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
200 }
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
201 else
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
202 {
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
203 // only a sign char or a number is allowed
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
204 return false;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
205 }
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
206 // now p points to the absolute value of the exponent
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
207 double exp = 0;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
208 while (*p >= '0' && *p <= '9')
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
209 {
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
210 exp = (exp * 10.0) + static_cast<double>(*p - '0'); // 1 12 123 123 12345
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
211 ++p;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
212 }
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
213 // now we have our exponent. put a sign on it.
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
214 exp *= sign;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
215 double scFac = ::pow(10.0, exp);
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
216 r *= scFac;
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
217
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
218 // only allowed symbol here is EOS
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
219 return (*p == 0);
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
220 }
1080
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
221 else
1166
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
222 {
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
223 // not allowed
1080
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
224 return false;
1166
f68da12e852b Added scientific notation support to StringToDouble
Benjamin Golinvaux <bgo@osimis.io>
parents: 1101
diff changeset
225 }
1080
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
226 }
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
227
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
228 inline bool StringToDouble(double& r, const std::string& text)
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
229 {
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
230 return StringToDouble(r, text.c_str());
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
231 }
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
232
1306
fef1ec42a7db Some docs + headers added to CMake for easier VS browsing + tiny predecl
Benjamin Golinvaux <bgo@osimis.io>
parents: 1279
diff changeset
233 /**
fef1ec42a7db Some docs + headers added to CMake for easier VS browsing + tiny predecl
Benjamin Golinvaux <bgo@osimis.io>
parents: 1279
diff changeset
234 Fast string to integer conversion. Leading zeroes and minus are accepted,
fef1ec42a7db Some docs + headers added to CMake for easier VS browsing + tiny predecl
Benjamin Golinvaux <bgo@osimis.io>
parents: 1279
diff changeset
235 but a leading + sign is NOT.
fef1ec42a7db Some docs + headers added to CMake for easier VS browsing + tiny predecl
Benjamin Golinvaux <bgo@osimis.io>
parents: 1279
diff changeset
236 Must pass the LegitIntegerString function test.
fef1ec42a7db Some docs + headers added to CMake for easier VS browsing + tiny predecl
Benjamin Golinvaux <bgo@osimis.io>
parents: 1279
diff changeset
237 In addition, an empty string (or lone minus sign) yields 0.
fef1ec42a7db Some docs + headers added to CMake for easier VS browsing + tiny predecl
Benjamin Golinvaux <bgo@osimis.io>
parents: 1279
diff changeset
238 */
fef1ec42a7db Some docs + headers added to CMake for easier VS browsing + tiny predecl
Benjamin Golinvaux <bgo@osimis.io>
parents: 1279
diff changeset
239
1080
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
240 template<typename T>
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
241 inline bool StringToInteger(T& r, const char* text)
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
242 {
1306
fef1ec42a7db Some docs + headers added to CMake for easier VS browsing + tiny predecl
Benjamin Golinvaux <bgo@osimis.io>
parents: 1279
diff changeset
243 if (!LegitIntegerString(text))
1080
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
244 return false;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
245
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
246 r = 0;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
247 T neg = 1;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
248 const char* p = text;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
249
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
250 if (*p == '-')
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
251 {
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
252 neg = -1;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
253 ++p;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
254 }
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
255 while (*p >= '0' && *p <= '9')
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
256 {
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
257 r = (r * 10) + (*p - '0'); // 1 12 123 123 12345
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
258 ++p;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
259 }
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
260 r *= neg;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
261 if (*p == 0)
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
262 return true;
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
263 else
287ec78f63b4 GenericToolbox (fast c-string --> double or integer) + refactoring to be able
Benjamin Golinvaux <bgo@osimis.io>
parents:
diff changeset
264 return false;
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265 }
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266
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267 template<typename T>
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268 inline bool StringToInteger(T& r, const std::string& text)
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269 {
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270 return StringToInteger<T>(r, text.c_str());
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271 }
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272
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273 /**
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274 if input is "rgb(12,23,255)" --> function fills `red`, `green` and `blue` and returns true
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275 else ("everything else") --> function returns false and leaves all values untouched
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276 */
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277 bool GetRgbValuesFromString(uint8_t& red, uint8_t& green, uint8_t& blue, const char* text);
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278
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279 /**
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280 See main overload
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281 */
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282 inline bool GetRgbValuesFromString(uint8_t& red, uint8_t& green, uint8_t& blue, const std::string& text)
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283 {
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284 return GetRgbValuesFromString(red, green, blue, text.c_str());
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285 }
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286
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287 /**
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288 Same as GetRgbValuesFromString
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289 */
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290 bool GetRgbaValuesFromString(uint8_t& red,
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291 uint8_t& green,
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292 uint8_t& blue,
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293 uint8_t& alpha,
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294 const char* text);
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295
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296 /**
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297 Same as GetRgbValuesFromString
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298 */
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299 inline bool GetRgbaValuesFromString(uint8_t& red,
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300 uint8_t& green,
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301 uint8_t& blue,
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302 uint8_t& alpha,
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303 const std::string& text)
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304 {
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305 return GetRgbaValuesFromString(red, green, blue, alpha, text.c_str());
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306 }
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307
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308
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309 /**
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310 This method could have been called StripSpacesAndChangeToLower but we might want to
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311 add some UUID validation to the argument
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312 */
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313 void NormalizeUuid(std::string& uuid);
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314 }
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315 }