include/Geant4/G4ConversionUtils.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
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0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 //
0027 // Jane Tinslay September 2006
0028 //
0029 // Conversion utility functions.
0030 //
0031 #ifndef G4CONVERSIONUTILS_HH
0032 #define G4CONVERSIONUTILS_HH
0033
0034 #include "globals.hh"
0035 #include "G4DimensionedDouble.hh"
0036 #include "G4DimensionedThreeVector.hh"
0037 #include <sstream>
0038
0039 namespace G4ConversionUtils
0040 {
0041   // Generic single value istringstream conversion.
0042   // Returns false if conversion failed or if extra characters
0043   // exist in input.
0044   template <typename Value>
0045   G4bool Convert(const G4String& myInput, Value& output)
0046   {
0047     G4String input = G4StrUtil::strip_copy(myInput);
0048
0049     std::istringstream is(input);
0050     char tester;
0051
0052     return ((is >> output) && !is.get(tester));
0053   }
0054
0055   // Conversion specialisations.
0056   template<>
0057   inline G4bool Convert(const G4String& myInput, G4DimensionedDouble& output)
0058   {
0059     G4String input = G4StrUtil::strip_copy(myInput);
0060
0061     G4double value;
0062     G4String unit;
0063
0064     std::istringstream is(input);
0065     char tester;
0066
0067     if (!(is >> value >> unit) || is.get(tester)) return false;
0068
0069     output = G4DimensionedDouble(value, unit);
0070
0071     return true;
0072   }
0073
0074   template<> inline G4bool Convert(const G4String& myInput,
0075                                    G4DimensionedThreeVector& output)
0076   {
0077     G4String input = G4StrUtil::strip_copy(myInput);
0078
0079     G4double value1, value2, value3;
0080     G4String unit;
0081
0082     std::istringstream is(input);
0083     char tester;
0084
0085     if (!(is >> value1 >> value2 >> value3 >>unit) || is.get(tester)) return false;
0086
0087     output = G4DimensionedThreeVector(G4ThreeVector(value1, value2, value3), unit);
0088
0089     return true;
0090   }
0091
0092   template<> inline G4bool Convert(const G4String& myInput, G4ThreeVector& output)
0093   {
0094     G4String input = G4StrUtil::strip_copy(myInput);
0095
0096     G4double value1, value2, value3;
0097
0098     std::istringstream is(input);
0099     char tester;
0100
0101     if (!(is >> value1 >> value2 >> value3) || is.get(tester)) return false;
0102     output = G4ThreeVector(value1, value2, value3);
0103
0104     return true;
0105   }
0106
0107   // Generic double value istringstream conversion.
0108   // Return false if conversion failed or if extra characters
0109   // exist in input.
0110   template <typename Value> G4bool Convert(const G4String& myInput, Value& value1,
0111                                            Value& value2)
0112   {
0113     G4String input = G4StrUtil::strip_copy(myInput);
0114
0115     std::istringstream is(input);
0116     char tester;
0117
0118     return ((is >> value1 >> value2) && (!is.get(tester)));
0119   }
0120
0121   // Conversion specialisations.
0122   template<> inline G4bool Convert(const G4String& myInput, G4DimensionedDouble& min,
0123                                    G4DimensionedDouble& max)
0124   {
0125     G4String input = G4StrUtil::strip_copy(myInput);
0126
0127     G4double valueMin, valueMax;
0128     G4String unitsMin, unitsMax;
0129
0130     std::istringstream is(input);
0131     char tester;
0132
0133     if (!(is >> valueMin >> unitsMin >> valueMax >> unitsMax) || is.get(tester)) return false;;
0134
0135     min = G4DimensionedDouble(valueMin, unitsMin);
0136     max = G4DimensionedDouble(valueMax, unitsMax);
0137
0138     return true;
0139   }
0140
0141   template<> inline G4bool Convert(const G4String& myInput, G4DimensionedThreeVector& min,
0142                                    G4DimensionedThreeVector& max)
0143   {
0144     G4String input = G4StrUtil::strip_copy(myInput);
0145
0146     G4double valueMinX, valueMinY, valueMinZ;
0147     G4double valueMaxX, valueMaxY, valueMaxZ;
0148     G4String unitMin, unitMax;
0149
0150     std::istringstream is(input);
0151     char tester;
0152
0153     if (!(is >> valueMinX >> valueMinY >> valueMinZ >> unitMin >> valueMaxX >> valueMaxY >> valueMaxZ >> unitMax)
0154         || is.get(tester)) return false;
0155
0156       min = G4DimensionedThreeVector(G4ThreeVector(valueMinX, valueMinY, valueMinZ), unitMin);
0157       max = G4DimensionedThreeVector(G4ThreeVector(valueMaxX, valueMaxY, valueMaxZ), unitMax);
0158
0159       return true;
0160   }
0161
0162   template<> inline G4bool Convert(const G4String& myInput, G4ThreeVector& min,
0163                                    G4ThreeVector& max)
0164   {
0165     G4String input = G4StrUtil::strip_copy(myInput);
0166
0167     G4double valueMinX, valueMinY, valueMinZ;
0168     G4double valueMaxX, valueMaxY, valueMaxZ;
0169
0170     std::istringstream is(input);
0171     char tester;
0172
0173     if (!(is >> valueMinX >> valueMinY >> valueMinZ >> valueMaxX >> valueMaxY >> valueMaxZ)
0174         || is.get(tester)) return false;
0175
0176     min = G4ThreeVector(valueMinX, valueMinY, valueMinZ);
0177     max = G4ThreeVector(valueMaxX, valueMaxY, valueMaxZ);
0178
0179     return true;
0180   }
0181
0182 }
0183
0184 #endif