[73] | 1 | /* |
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| 2 | * ---------------------------------------------------------------------- |
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| 3 | * RpUnits.cc |
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| 4 | * |
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[83] | 5 | * Data Members and member functions for the RpUnits class |
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| 6 | * |
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[73] | 7 | * ====================================================================== |
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| 8 | * AUTHOR: Derrick Kearney, Purdue University |
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[115] | 9 | * Copyright (c) 2004-2005 Purdue Research Foundation |
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| 10 | * |
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| 11 | * See the file "license.terms" for information on usage and |
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| 12 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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[73] | 13 | * ====================================================================== |
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| 14 | */ |
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[116] | 15 | |
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[73] | 16 | #include "RpUnits.h" |
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| 17 | |
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[20] | 18 | // dict pointer |
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| 19 | RpDict<std::string,RpUnits*>* RpUnits::dict = new RpDict<std::string,RpUnits*>(); |
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[262] | 20 | |
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| 21 | // install predefined units |
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[116] | 22 | static RpUnitsPreset loader; |
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[20] | 23 | |
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[520] | 24 | // convert function flags |
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| 25 | const int RpUnits::UNITS_OFF = 0; |
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| 26 | const int RpUnits::UNITS_ON = 1; |
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| 27 | |
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[121] | 28 | /**********************************************************************/ |
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| 29 | // METHOD: define() |
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| 30 | /// Define a unit type to be stored as a Rappture Unit. |
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| 31 | /** |
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| 32 | */ |
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[20] | 33 | |
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[121] | 34 | RpUnits * |
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[262] | 35 | RpUnits::define( const std::string units, |
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| 36 | const RpUnits* basis, |
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| 37 | const std::string type ) { |
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[104] | 38 | |
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[116] | 39 | RpUnits* newRpUnit = NULL; |
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[20] | 40 | |
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[116] | 41 | std::string searchStr = units; |
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| 42 | std::string sendStr = ""; |
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| 43 | int len = searchStr.length(); |
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| 44 | int idx = len-1; |
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| 45 | double exponent = 1; |
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| 46 | |
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[262] | 47 | if (units.empty()) { |
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[20] | 48 | // raise error, user sent null units! |
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| 49 | return NULL; |
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| 50 | } |
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| 51 | |
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| 52 | // check to see if the user is trying to trick me! |
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| 53 | if ( (basis) && (units == basis->getUnits()) ) { |
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| 54 | // dont trick me! |
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| 55 | return NULL; |
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| 56 | } |
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| 57 | |
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[116] | 58 | // check to see if the said unit can already be found in the dictionary |
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| 59 | if (RpUnits::find(units)) { |
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| 60 | return NULL; |
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| 61 | } |
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[73] | 62 | |
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[116] | 63 | //default exponent |
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| 64 | exponent = 1; |
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[73] | 65 | |
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[116] | 66 | // check to see if there is an exponent at the end |
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| 67 | // of the search string |
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| 68 | idx = RpUnits::grabExponent(searchStr, &exponent); |
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| 69 | searchStr.erase(idx); |
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[73] | 70 | |
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[116] | 71 | // move idx pointer back to where last character was found |
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| 72 | idx--; |
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[73] | 73 | |
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[116] | 74 | if ( searchStr[0] == '/') { |
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| 75 | // need to negate all of the previous exponents |
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| 76 | exponent = -1*exponent; |
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| 77 | sendStr = searchStr.c_str()+1; |
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| 78 | } |
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| 79 | else { |
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| 80 | // sendStr = searchStr.substr(idx+1,); |
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| 81 | // we have a unit string to parse |
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| 82 | sendStr = searchStr; |
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| 83 | } |
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[83] | 84 | |
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[262] | 85 | newRpUnit = new RpUnits(sendStr, exponent, basis, type); |
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[116] | 86 | if (newRpUnit) { |
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| 87 | insert(newRpUnit->getUnitsName(),newRpUnit); |
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[73] | 88 | } |
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| 89 | |
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| 90 | // return a copy of the new object to user |
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| 91 | return newRpUnit; |
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| 92 | } |
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| 93 | |
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[121] | 94 | /**********************************************************************/ |
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| 95 | // METHOD: grabExponent() |
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| 96 | /// Return exponent from a units string containing a unit name and exponent |
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| 97 | /** |
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| 98 | */ |
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| 99 | |
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[116] | 100 | int |
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| 101 | RpUnits::grabExponent(const std::string& inStr, double* exp) { |
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[73] | 102 | |
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[116] | 103 | int len = inStr.length(); |
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| 104 | int idx = len - 1; |
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[73] | 105 | |
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[116] | 106 | *exp = 1; |
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[104] | 107 | |
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[116] | 108 | while (isdigit(inStr[idx])) { |
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| 109 | idx--; |
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[73] | 110 | } |
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| 111 | |
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[116] | 112 | if ( (inStr[idx] == '+') || (inStr[idx] == '-') ) { |
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| 113 | idx--; |
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[73] | 114 | } |
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| 115 | |
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[116] | 116 | idx++; |
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[20] | 117 | |
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[116] | 118 | if (idx != len) { |
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| 119 | // process the exponent. |
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| 120 | *exp = strtod(inStr.c_str()+idx,NULL); |
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| 121 | } |
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[20] | 122 | |
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[116] | 123 | return idx; |
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| 124 | } |
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[20] | 125 | |
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[121] | 126 | /**********************************************************************/ |
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| 127 | // METHOD: grabUnitString() |
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| 128 | /// Return units name from a units string containing a unit name and exponent |
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| 129 | /** |
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| 130 | */ |
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| 131 | |
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[116] | 132 | int |
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| 133 | RpUnits::grabUnitString ( const std::string& inStr ) { |
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[20] | 134 | |
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[116] | 135 | int idx = inStr.length() - 1; |
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[20] | 136 | |
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[478] | 137 | while ((idx >= 0) && isalpha(inStr[idx])) { |
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[116] | 138 | idx--; |
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| 139 | } |
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[83] | 140 | |
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[116] | 141 | // move the index forward one position to |
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| 142 | // represent the start of the unit string |
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| 143 | idx++; |
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[83] | 144 | |
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[116] | 145 | return idx; |
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| 146 | } |
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[83] | 147 | |
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[121] | 148 | /**********************************************************************/ |
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| 149 | // METHOD: grabUnits() |
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| 150 | /// Search for the provided units exponent pair in the dictionary. |
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| 151 | /** |
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| 152 | */ |
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| 153 | |
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[116] | 154 | const RpUnits* |
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| 155 | RpUnits::grabUnits ( std::string inStr, int* offset) { |
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[83] | 156 | |
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[116] | 157 | const RpUnits* unit = NULL; |
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| 158 | int len = inStr.length(); |
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[83] | 159 | |
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[116] | 160 | while ( ! inStr.empty() ) { |
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| 161 | unit = RpUnits::find(inStr); |
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| 162 | if (unit) { |
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| 163 | *offset = len - inStr.length(); |
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| 164 | break; |
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[20] | 165 | } |
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[116] | 166 | inStr.erase(0,1); |
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[20] | 167 | } |
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| 168 | |
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[116] | 169 | return unit; |
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[20] | 170 | } |
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| 171 | |
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| 172 | |
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[262] | 173 | /**********************************************************************/ |
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| 174 | // METHOD: getType() |
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| 175 | /// Return the type of an RpUnits object. |
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| 176 | /** |
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| 177 | */ |
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| 178 | std::string |
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| 179 | RpUnits::getType() const { |
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| 180 | return this->type; |
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| 181 | } |
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[116] | 182 | |
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[121] | 183 | /**********************************************************************/ |
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[262] | 184 | // METHOD: getCompatible() |
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| 185 | /// Return a list of units compatible with this RpUnits object. |
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| 186 | /** |
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| 187 | */ |
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| 188 | std::list<std::string> |
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[399] | 189 | RpUnits::getCompatible(double expMultiplier) const { |
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[262] | 190 | |
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| 191 | std::list<std::string> compatList; |
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| 192 | std::list<std::string> basisCompatList; |
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[399] | 193 | std::string myName = getUnitsName(); |
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| 194 | // std::stringstream otherName; |
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| 195 | std::string otherName = ""; |
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| 196 | std::string otherBasisName = ""; |
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| 197 | std::string blank = ""; |
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| 198 | // double otherExp = 1.0; |
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| 199 | convEntry* myConversions = this->convList; |
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| 200 | const RpUnits * basis = NULL; |
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[262] | 201 | |
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| 202 | if (this->basis) { |
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| 203 | basisCompatList = this->basis->getCompatible(); |
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| 204 | compatList.merge(basisCompatList); |
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| 205 | } |
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[399] | 206 | else { |
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| 207 | // only basis units should be in here |
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| 208 | // |
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| 209 | // run through the conversion list |
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| 210 | // for each entry, look at the name |
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| 211 | // if the name is not equal to the name of this RpUnits object, |
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| 212 | // store the fromPtr->getUnitsName() into compatList |
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| 213 | // else store the toPtr->getUnitsName() into compatList |
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| 214 | // |
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| 215 | while (myConversions != NULL) { |
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[262] | 216 | |
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[399] | 217 | otherName = myConversions->conv->toPtr->getUnitsName(); |
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| 218 | /* |
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| 219 | otherName.str(""); |
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| 220 | otherName << myConversions->conv->toPtr->getUnitsName(); |
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| 221 | otherExp = myConversions->conv->fromPtr->getExponent(); |
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| 222 | if ( (otherExp != 1) && (expMultiplier != 1) ) { |
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| 223 | otherName << otherExp * expMultiplier; |
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| 224 | } |
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| 225 | */ |
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| 226 | basis = myConversions->conv->toPtr->basis; |
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| 227 | |
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| 228 | // if (myName == otherName.str()) { |
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| 229 | if (myName == otherName) { |
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| 230 | otherName = myConversions->conv->fromPtr->getUnitsName(); |
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| 231 | /* |
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| 232 | otherName.str(""); |
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| 233 | otherName << myConversions->conv->fromPtr->getUnitsName(); |
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| 234 | if ( (otherExp != 1) && (expMultiplier != 1) ) { |
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| 235 | otherExp = myConversions->conv->fromPtr->getExponent(); |
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| 236 | otherName << otherExp * expMultiplier; |
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| 237 | } |
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| 238 | */ |
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| 239 | basis = myConversions->conv->fromPtr->basis; |
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| 240 | } |
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| 241 | |
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| 242 | // check to see if they are the same basis, |
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| 243 | // no need to list all of the metric conversions. |
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| 244 | if (basis) { |
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| 245 | if (basis->getUnitsName() == myName) { |
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| 246 | // do not add this unit to the conversion |
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| 247 | // because its a derived unit. |
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| 248 | myConversions = myConversions->next; |
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| 249 | continue; |
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| 250 | } |
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| 251 | } |
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| 252 | |
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| 253 | // add the other unit's name to the list of compatible units |
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| 254 | // compatList.push_back(otherName.str()); |
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| 255 | compatList.push_back(otherName); |
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| 256 | |
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| 257 | // advance to the next conversion |
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| 258 | myConversions = myConversions->next; |
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[262] | 259 | } |
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| 260 | } |
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| 261 | |
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| 262 | compatList.push_back(myName); |
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| 263 | compatList.sort(); |
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| 264 | compatList.unique(); |
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| 265 | return compatList; |
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| 266 | |
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| 267 | } |
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| 268 | |
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| 269 | /**********************************************************************/ |
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[121] | 270 | // METHOD: define() |
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| 271 | /// Define a unit conversion with one arg double function pointers. |
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| 272 | /** |
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| 273 | */ |
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| 274 | |
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[104] | 275 | RpUnits * |
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| 276 | RpUnits::define( const RpUnits* from, |
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| 277 | const RpUnits* to, |
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| 278 | double (*convForwFxnPtr)(double), |
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[114] | 279 | double (*convBackFxnPtr)(double) ) { |
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[104] | 280 | |
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[114] | 281 | // this is kinda the wrong way to get the job done... |
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| 282 | // how do we only create 1 conversion object and share it between atleast two RpUnits |
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| 283 | // objs so that when the RpUnits objs are deleted, we are not trying to delete already |
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| 284 | // deleted memory. |
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| 285 | // so for the sake of safety we get the following few lines of code. |
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[83] | 286 | |
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[114] | 287 | conversion* conv1 = NULL; |
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| 288 | conversion* conv2 = NULL; |
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| 289 | |
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[116] | 290 | if (from && to) { |
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[114] | 291 | |
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[116] | 292 | conv1 = new conversion (from,to,convForwFxnPtr,convBackFxnPtr); |
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| 293 | conv2 = new conversion (from,to,convForwFxnPtr,convBackFxnPtr); |
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[114] | 294 | |
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[116] | 295 | from->connectConversion(conv1); |
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| 296 | to->connectConversion(conv2); |
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| 297 | } |
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| 298 | |
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[114] | 299 | return NULL; |
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[20] | 300 | } |
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| 301 | |
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[121] | 302 | /**********************************************************************/ |
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| 303 | // METHOD: define() |
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| 304 | /// Define a unit conversion with two arg double function pointers. |
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| 305 | /** |
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| 306 | */ |
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| 307 | |
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[104] | 308 | RpUnits * |
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| 309 | RpUnits::define( const RpUnits* from, |
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| 310 | const RpUnits* to, |
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| 311 | double (*convForwFxnPtr)(double,double), |
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| 312 | double (*convBackFxnPtr)(double,double)) { |
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| 313 | |
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[114] | 314 | // this is kinda the wrong way to get the job done... |
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[116] | 315 | // how do we only create 1 conversion object and share it between |
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| 316 | // atleast two RpUnits objs so that when the RpUnits objs are |
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| 317 | // deleted, we are not trying to delete already deleted memory. |
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[114] | 318 | // so for the sake of safety we get the following few lines of code. |
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[103] | 319 | |
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[114] | 320 | conversion* conv1 = NULL; |
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| 321 | conversion* conv2 = NULL; |
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| 322 | |
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[116] | 323 | if (from && to) { |
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| 324 | conv1 = new conversion (from,to,convForwFxnPtr,convBackFxnPtr); |
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| 325 | conv2 = new conversion (from,to,convForwFxnPtr,convBackFxnPtr); |
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[114] | 326 | |
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[116] | 327 | from->connectConversion(conv1); |
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| 328 | to->connectConversion(conv2); |
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| 329 | } |
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[114] | 330 | |
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| 331 | return NULL; |
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[103] | 332 | } |
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| 333 | |
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[121] | 334 | /**********************************************************************/ |
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| 335 | // METHOD: define() |
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| 336 | /// Define a unit conversion with two arg void* function pointers. |
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| 337 | /** |
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| 338 | */ |
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| 339 | |
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[104] | 340 | RpUnits * |
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| 341 | RpUnits::define( const RpUnits* from, |
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| 342 | const RpUnits* to, |
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| 343 | void* (*convForwFxnPtr)(void*, void*), |
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| 344 | void* convForwData, |
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| 345 | void* (*convBackFxnPtr)(void*, void*), |
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| 346 | void* convBackData) { |
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| 347 | |
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[114] | 348 | // this is kinda the wrong way to get the job done... |
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[116] | 349 | // how do we only create 1 conversion object and share it between at |
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| 350 | // least two RpUnits objs so that when the RpUnits objs are deleted, |
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| 351 | // we are not trying to delete already deleted memory. |
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[114] | 352 | // so for the sake of safety we get the following few lines of code. |
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[83] | 353 | |
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[114] | 354 | conversion* conv1 = NULL; |
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| 355 | conversion* conv2 = NULL; |
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| 356 | |
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[116] | 357 | if (from && to) { |
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| 358 | conv1 = new conversion ( from, to, convForwFxnPtr,convForwData, |
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| 359 | convBackFxnPtr,convBackData); |
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| 360 | conv2 = new conversion ( from,to,convForwFxnPtr,convForwData, |
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| 361 | convBackFxnPtr,convBackData); |
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[114] | 362 | |
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[116] | 363 | from->connectConversion(conv1); |
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| 364 | to->connectConversion(conv2); |
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| 365 | } |
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[114] | 366 | |
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| 367 | return NULL; |
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[20] | 368 | } |
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| 369 | |
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[104] | 370 | |
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| 371 | /**********************************************************************/ |
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| 372 | // METHOD: getUnits() |
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[119] | 373 | /// Report the text portion of the units of this object back to caller. |
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| 374 | /** |
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[121] | 375 | * \sa {getUnitsName} |
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[119] | 376 | */ |
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| 377 | |
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[104] | 378 | std::string |
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| 379 | RpUnits::getUnits() const { |
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| 380 | |
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[116] | 381 | return units; |
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[20] | 382 | } |
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| 383 | |
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[104] | 384 | /**********************************************************************/ |
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| 385 | // METHOD: getUnitsName() |
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[119] | 386 | /// Report the full name of the units of this object back to caller. |
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| 387 | /** |
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| 388 | * Reports the full text and exponent of the units represented by this |
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| 389 | * object, back to the caller. Note that if the exponent == 1, no |
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| 390 | * exponent will be printed. |
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| 391 | */ |
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| 392 | |
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[104] | 393 | std::string |
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| 394 | RpUnits::getUnitsName() const { |
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| 395 | |
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[20] | 396 | std::stringstream unitText; |
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| 397 | double exponent; |
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[83] | 398 | |
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[116] | 399 | exponent = getExponent(); |
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[20] | 400 | |
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[116] | 401 | if (exponent == 1) { |
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| 402 | unitText << units; |
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[20] | 403 | } |
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[116] | 404 | else { |
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| 405 | unitText << units << exponent; |
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| 406 | } |
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[83] | 407 | |
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[116] | 408 | return (std::string(unitText.str())); |
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[20] | 409 | } |
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| 410 | |
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[104] | 411 | /**********************************************************************/ |
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| 412 | // METHOD: getExponent() |
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[119] | 413 | /// Report the exponent of the units of this object back to caller. |
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| 414 | /** |
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| 415 | * Reports the exponent of the units represented by this |
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| 416 | * object, back to the caller. Note that if the exponent == 1, no |
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| 417 | * exponent will be printed. |
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| 418 | */ |
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| 419 | |
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[104] | 420 | double |
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| 421 | RpUnits::getExponent() const { |
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| 422 | |
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[116] | 423 | return exponent; |
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[20] | 424 | } |
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| 425 | |
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[104] | 426 | /**********************************************************************/ |
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| 427 | // METHOD: getBasis() |
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[119] | 428 | /// Retrieve the RpUnits object representing the basis of this object. |
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| 429 | /** |
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| 430 | * Returns a pointer to a RpUnits object which, on success, points to the |
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| 431 | * RpUnits object that is the basis of the calling object. |
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| 432 | */ |
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| 433 | |
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[104] | 434 | const RpUnits * |
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| 435 | RpUnits::getBasis() const { |
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| 436 | |
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[116] | 437 | return basis; |
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[20] | 438 | } |
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| 439 | |
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[121] | 440 | /**********************************************************************/ |
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| 441 | // METHOD: makeBasis() |
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| 442 | /// Convert a value into its RpUnits's basis. |
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| 443 | /** |
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[20] | 444 | * convert the current unit to its basis units |
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[83] | 445 | * |
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[20] | 446 | * Return Codes |
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| 447 | * 0) no error (could also mean or no prefix was found) |
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| 448 | * in some cases, this means the value is in its basis format |
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| 449 | * 1) the prefix found does not have a built in factor associated. |
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[83] | 450 | * |
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[121] | 451 | */ |
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| 452 | |
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[104] | 453 | double |
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| 454 | RpUnits::makeBasis(double value, int* result) const { |
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[20] | 455 | |
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| 456 | double retVal = value; |
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| 457 | |
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| 458 | if (result) { |
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| 459 | *result = 0; |
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| 460 | } |
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| 461 | |
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| 462 | if (basis == NULL) { |
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| 463 | // this unit is a basis |
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| 464 | // do nothing |
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| 465 | } |
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| 466 | else { |
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| 467 | retVal = convert(basis,value,result); |
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| 468 | } |
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| 469 | |
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| 470 | return retVal; |
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| 471 | } |
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| 472 | |
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[121] | 473 | /**********************************************************************/ |
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| 474 | // METHOD: makeBasis() |
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| 475 | /// Convert a value into its RpUnits's basis. |
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| 476 | /** |
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| 477 | * |
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| 478 | */ |
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| 479 | |
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[104] | 480 | const RpUnits& |
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| 481 | RpUnits::makeBasis(double* value, int* result) const { |
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[20] | 482 | double retVal = *value; |
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[114] | 483 | int convResult = 1; |
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[20] | 484 | |
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| 485 | if (basis == NULL) { |
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| 486 | // this unit is a basis |
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| 487 | // do nothing |
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| 488 | } |
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| 489 | else { |
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| 490 | retVal = convert(basis,retVal,&convResult); |
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| 491 | } |
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| 492 | |
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[114] | 493 | if ( (convResult == 0) ) { |
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[20] | 494 | *value = retVal; |
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| 495 | } |
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| 496 | |
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| 497 | if (result) { |
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| 498 | *result = convResult; |
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| 499 | } |
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| 500 | |
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| 501 | return *this; |
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| 502 | } |
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| 503 | |
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[121] | 504 | /**********************************************************************/ |
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| 505 | // METHOD: makeMetric() |
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| 506 | /// Define a unit type to be stored as a Rappture Unit. |
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| 507 | /** |
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[83] | 508 | * static int makeMetric(RpUnits * basis); |
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[20] | 509 | * create the metric attachments for the given basis. |
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[83] | 510 | * should only be used if this unit is of metric type |
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[121] | 511 | */ |
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[20] | 512 | |
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[104] | 513 | int |
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[116] | 514 | RpUnits::makeMetric(const RpUnits* basis) { |
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[20] | 515 | |
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[103] | 516 | if (!basis) { |
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| 517 | return 0; |
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| 518 | } |
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| 519 | |
---|
| 520 | std::string basisName = basis->getUnitsName(); |
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| 521 | std::string name; |
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| 522 | |
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| 523 | name = "c" + basisName; |
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[262] | 524 | RpUnits * centi = RpUnits::define(name, basis, basis->type); |
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[103] | 525 | RpUnits::define(centi, basis, centi2base, base2centi); |
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| 526 | |
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| 527 | name = "m" + basisName; |
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[262] | 528 | RpUnits * milli = RpUnits::define(name, basis, basis->type); |
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[103] | 529 | RpUnits::define(milli, basis, milli2base, base2milli); |
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| 530 | |
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| 531 | name = "u" + basisName; |
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[262] | 532 | RpUnits * micro = RpUnits::define(name, basis, basis->type); |
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[103] | 533 | RpUnits::define(micro, basis, micro2base, base2micro); |
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| 534 | |
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| 535 | name = "n" + basisName; |
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[262] | 536 | RpUnits * nano = RpUnits::define(name, basis, basis->type); |
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[103] | 537 | RpUnits::define(nano, basis, nano2base, base2nano); |
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| 538 | |
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| 539 | name = "p" + basisName; |
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[262] | 540 | RpUnits * pico = RpUnits::define(name, basis, basis->type); |
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[103] | 541 | RpUnits::define(pico, basis, pico2base, base2pico); |
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| 542 | |
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| 543 | name = "f" + basisName; |
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[262] | 544 | RpUnits * femto = RpUnits::define(name, basis, basis->type); |
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[103] | 545 | RpUnits::define(femto, basis, femto2base, base2femto); |
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| 546 | |
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| 547 | name = "a" + basisName; |
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[262] | 548 | RpUnits * atto = RpUnits::define(name, basis, basis->type); |
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[103] | 549 | RpUnits::define(atto, basis, atto2base, base2atto); |
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| 550 | |
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| 551 | name = "k" + basisName; |
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[262] | 552 | RpUnits * kilo = RpUnits::define(name, basis, basis->type); |
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[103] | 553 | RpUnits::define(kilo, basis, kilo2base, base2kilo); |
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| 554 | |
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| 555 | name = "M" + basisName; |
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[262] | 556 | RpUnits * mega = RpUnits::define(name, basis, basis->type); |
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[103] | 557 | RpUnits::define(mega, basis, mega2base, base2mega); |
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| 558 | |
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| 559 | name = "G" + basisName; |
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[262] | 560 | RpUnits * giga = RpUnits::define(name, basis, basis->type); |
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[103] | 561 | RpUnits::define(giga, basis, giga2base, base2giga); |
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| 562 | |
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| 563 | name = "T" + basisName; |
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[262] | 564 | RpUnits * tera = RpUnits::define(name, basis, basis->type); |
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[103] | 565 | RpUnits::define(tera, basis, tera2base, base2tera); |
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| 566 | |
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| 567 | name = "P" + basisName; |
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[262] | 568 | RpUnits * peta = RpUnits::define(name, basis, basis->type); |
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[103] | 569 | RpUnits::define(peta, basis, peta2base, base2peta); |
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| 570 | |
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| 571 | return (1); |
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| 572 | } |
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| 573 | |
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| 574 | |
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[121] | 575 | /**********************************************************************/ |
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| 576 | // METHOD: find() |
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| 577 | /// Find an RpUnits Object from the provided string. |
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| 578 | /** |
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| 579 | */ |
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| 580 | |
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[104] | 581 | const RpUnits* |
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| 582 | RpUnits::find(std::string key) { |
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| 583 | |
---|
[103] | 584 | // dict pointer |
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[116] | 585 | const RpUnits* unitEntry = NULL; |
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| 586 | double exponent = 1; |
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| 587 | int idx = 0; |
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| 588 | std::stringstream tmpKey; |
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[103] | 589 | |
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[116] | 590 | if (key[0] == '/') { |
---|
| 591 | // check to see if there is an exponent at the end |
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| 592 | // of the search string |
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| 593 | idx = RpUnits::grabExponent(key, &exponent); |
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| 594 | tmpKey << key.substr(1,idx-1) << (-1*exponent); |
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| 595 | key = tmpKey.str(); |
---|
| 596 | } |
---|
| 597 | |
---|
| 598 | unitEntry = *(dict->find(key).getValue()); |
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| 599 | |
---|
[103] | 600 | // dict pointer |
---|
[104] | 601 | if (unitEntry == *(dict->getNullEntry().getValue()) ) { |
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[103] | 602 | unitEntry = NULL; |
---|
| 603 | } |
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| 604 | |
---|
| 605 | return unitEntry; |
---|
| 606 | } |
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| 607 | |
---|
[121] | 608 | /**********************************************************************/ |
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[399] | 609 | // METHOD: validate() |
---|
| 610 | /// Split a string of units and check that each unit is available as an object |
---|
| 611 | /** |
---|
| 612 | * Splits a string of units like cm2/kVns into a list of units like |
---|
| 613 | * cm2, kV1, ns1 where an exponent is provided for each list entry. |
---|
| 614 | * It checks to see that each unit actually exists as a valid defined unit. |
---|
| 615 | * If the unit exists or can be interpreted, the function keeps parsing the |
---|
| 616 | * string until it reaches the end of the string. If the function comes |
---|
| 617 | * across a unit that is unrecognized or can not be interpreted, then it |
---|
| 618 | * returns error (a non-zero value). |
---|
| 619 | * |
---|
| 620 | * this code is very similar to units2list() |
---|
| 621 | * |
---|
| 622 | * if &compatList == NULL, no compatible list of units will be generated. |
---|
| 623 | * this function does not do a good job of placing the available units |
---|
| 624 | * back into the original formula. i still need to work on this. |
---|
| 625 | */ |
---|
| 626 | |
---|
| 627 | int |
---|
| 628 | RpUnits::validate ( const std::string& inUnits, |
---|
| 629 | std::string& type, |
---|
| 630 | std::list<std::string>* compatList ) { |
---|
| 631 | |
---|
| 632 | std::string myInUnits = inUnits; |
---|
| 633 | std::string sendUnitStr = ""; |
---|
| 634 | double exponent = 1; |
---|
| 635 | int offset = 0; |
---|
| 636 | int idx = 0; |
---|
| 637 | int last = 0; |
---|
| 638 | int err = 0; // did we come across an unrecognized unit |
---|
| 639 | const RpUnits* unit = NULL; |
---|
| 640 | std::list<std::string> basisCompatList; |
---|
| 641 | std::list<std::string>::iterator compatListIter; |
---|
| 642 | std::stringstream unitWExp; |
---|
| 643 | |
---|
| 644 | |
---|
| 645 | while ( !myInUnits.empty() ) { |
---|
| 646 | |
---|
| 647 | // check to see if we came across a '/' character |
---|
| 648 | last = myInUnits.length()-1; |
---|
| 649 | if (myInUnits[last] == '/') { |
---|
| 650 | type = myInUnits[last] + type; |
---|
| 651 | myInUnits.erase(last); |
---|
| 652 | continue; |
---|
| 653 | } |
---|
| 654 | |
---|
| 655 | // get the exponent |
---|
| 656 | offset = RpUnits::grabExponent(myInUnits,&exponent); |
---|
| 657 | myInUnits.erase(offset); |
---|
| 658 | idx = offset - 1; |
---|
| 659 | |
---|
| 660 | // grab the largest string we can find |
---|
| 661 | offset = RpUnits::grabUnitString(myInUnits); |
---|
| 662 | idx = offset; |
---|
| 663 | |
---|
| 664 | // figure out if we have some defined units in that string |
---|
| 665 | sendUnitStr = myInUnits.substr(offset,std::string::npos); |
---|
| 666 | if ((unit = grabUnits(sendUnitStr,&offset))) { |
---|
| 667 | // a unit was found |
---|
| 668 | // erase the found unit's name from our search string |
---|
| 669 | myInUnits.erase(idx+offset); |
---|
| 670 | |
---|
| 671 | // add the type to the type string |
---|
| 672 | type = unit->getType() + type; |
---|
| 673 | |
---|
| 674 | // merge the compatible units |
---|
| 675 | if (compatList) { |
---|
| 676 | basisCompatList = unit->getCompatible(exponent); |
---|
| 677 | |
---|
| 678 | // adjust exponents as necessary |
---|
| 679 | if ( (exponent != 0) && (exponent != 1) ) { |
---|
| 680 | compatListIter = compatList->begin(); |
---|
| 681 | while (compatListIter != compatList->end()) { |
---|
| 682 | unitWExp << *compatListIter << exponent; |
---|
| 683 | *compatListIter = unitWExp.str(); |
---|
| 684 | } |
---|
| 685 | } |
---|
| 686 | |
---|
| 687 | compatList->merge(basisCompatList); |
---|
| 688 | } |
---|
| 689 | } |
---|
| 690 | else { |
---|
| 691 | // we came across a unit we did not recognize |
---|
| 692 | // raise error and exit |
---|
| 693 | err++; |
---|
| 694 | break; |
---|
| 695 | } |
---|
| 696 | |
---|
| 697 | // reset our vars |
---|
| 698 | idx = 0; |
---|
| 699 | offset = 0; |
---|
| 700 | exponent = 1; |
---|
| 701 | } |
---|
| 702 | |
---|
| 703 | // clean out any duplicate entries. |
---|
| 704 | if (compatList) { |
---|
| 705 | compatList->unique(); |
---|
| 706 | } |
---|
| 707 | |
---|
| 708 | return err; |
---|
| 709 | } |
---|
| 710 | |
---|
| 711 | |
---|
| 712 | /**********************************************************************/ |
---|
[262] | 713 | // METHOD: negateListExponents() |
---|
| 714 | /// Negate the exponents on every element in unitsList |
---|
[121] | 715 | /** |
---|
| 716 | */ |
---|
| 717 | |
---|
[116] | 718 | int |
---|
| 719 | RpUnits::negateListExponents(RpUnitsList& unitsList) { |
---|
| 720 | RpUnitsListIter iter = unitsList.begin(); |
---|
| 721 | int nodeCnt = unitsList.size(); |
---|
[103] | 722 | |
---|
[116] | 723 | if (nodeCnt > 0) { |
---|
| 724 | for (; iter != unitsList.end(); iter++) { |
---|
| 725 | iter->negateExponent(); |
---|
| 726 | nodeCnt--; |
---|
| 727 | } |
---|
| 728 | } |
---|
| 729 | |
---|
| 730 | return nodeCnt; |
---|
| 731 | } |
---|
| 732 | |
---|
[121] | 733 | /**********************************************************************/ |
---|
[262] | 734 | // METHOD: negateExponent() |
---|
| 735 | /// Negate the exponent on the current RpUnitsListEntry |
---|
[121] | 736 | /** |
---|
| 737 | */ |
---|
| 738 | |
---|
[116] | 739 | void |
---|
| 740 | RpUnitsListEntry::negateExponent() const { |
---|
| 741 | exponent = exponent * -1; |
---|
| 742 | return; |
---|
| 743 | } |
---|
| 744 | |
---|
[121] | 745 | /**********************************************************************/ |
---|
[262] | 746 | // METHOD: name() |
---|
| 747 | /// Provide the caller with the name of this object |
---|
[121] | 748 | /** |
---|
| 749 | */ |
---|
| 750 | |
---|
[116] | 751 | std::string |
---|
| 752 | RpUnitsListEntry::name() const { |
---|
| 753 | std::stringstream name; |
---|
| 754 | name << unit->getUnits() << exponent; |
---|
| 755 | return std::string(name.str()); |
---|
| 756 | } |
---|
| 757 | |
---|
[121] | 758 | /**********************************************************************/ |
---|
| 759 | // METHOD: define() |
---|
[262] | 760 | /// Provide the caller with the basis of the RpUnits object being stored |
---|
[121] | 761 | /** |
---|
| 762 | */ |
---|
| 763 | |
---|
[116] | 764 | const RpUnits* |
---|
| 765 | RpUnitsListEntry::getBasis() const { |
---|
| 766 | return unit->getBasis(); |
---|
| 767 | } |
---|
| 768 | |
---|
[121] | 769 | /**********************************************************************/ |
---|
| 770 | // METHOD: getUnitsObj() |
---|
| 771 | /// Return the RpUnits Object from a RpUnitsListEntry. |
---|
| 772 | /** |
---|
| 773 | */ |
---|
| 774 | |
---|
[116] | 775 | const RpUnits* |
---|
| 776 | RpUnitsListEntry::getUnitsObj() const { |
---|
| 777 | return unit; |
---|
| 778 | } |
---|
| 779 | |
---|
[121] | 780 | /**********************************************************************/ |
---|
| 781 | // METHOD: getExponent() |
---|
| 782 | /// Return the exponent of an RpUnitsListEntry. |
---|
| 783 | /** |
---|
| 784 | */ |
---|
| 785 | |
---|
[116] | 786 | double |
---|
| 787 | RpUnitsListEntry::getExponent() const { |
---|
| 788 | return exponent; |
---|
| 789 | } |
---|
| 790 | |
---|
[121] | 791 | /**********************************************************************/ |
---|
| 792 | // METHOD: printList() |
---|
| 793 | /// Traverse a RpUnitsList and print out the name of each element. |
---|
| 794 | /** |
---|
| 795 | */ |
---|
| 796 | |
---|
[116] | 797 | int |
---|
| 798 | RpUnits::printList(RpUnitsList& unitsList) { |
---|
| 799 | RpUnitsListIter iter = unitsList.begin(); |
---|
| 800 | int nodeCnt = unitsList.size(); |
---|
| 801 | |
---|
| 802 | if (nodeCnt > 0) { |
---|
| 803 | for (; iter != unitsList.end(); iter++) { |
---|
| 804 | std::cout << iter->name() << " "; |
---|
| 805 | nodeCnt--; |
---|
| 806 | } |
---|
| 807 | std::cout << std::endl; |
---|
| 808 | } |
---|
| 809 | |
---|
| 810 | return nodeCnt; |
---|
| 811 | } |
---|
| 812 | |
---|
[121] | 813 | /**********************************************************************/ |
---|
| 814 | // METHOD: units2list() |
---|
| 815 | /// Split a string of units into a list of base units with exponents. |
---|
| 816 | /** |
---|
| 817 | * Splits a string of units like cm2/kVns into a list of units like |
---|
| 818 | * cm2, kV1, ns1 where an exponent is provided for each list entry. |
---|
| 819 | * List entries are found by comparing units strings to the names |
---|
| 820 | * in the dictionary. |
---|
| 821 | */ |
---|
| 822 | |
---|
[116] | 823 | int |
---|
| 824 | RpUnits::units2list ( const std::string& inUnits, |
---|
| 825 | RpUnitsList& outList ) { |
---|
| 826 | |
---|
| 827 | std::string myInUnits = inUnits; |
---|
| 828 | std::string sendUnitStr = ""; |
---|
| 829 | double exponent = 1; |
---|
| 830 | int offset = 0; |
---|
| 831 | int idx = 0; |
---|
| 832 | int last = 0; |
---|
| 833 | const RpUnits* unit = NULL; |
---|
| 834 | |
---|
| 835 | |
---|
| 836 | while ( !myInUnits.empty() ) { |
---|
| 837 | |
---|
| 838 | // check to see if we came across a '/' character |
---|
| 839 | last = myInUnits.length()-1; |
---|
| 840 | if (myInUnits[last] == '/') { |
---|
| 841 | myInUnits.erase(last); |
---|
| 842 | // multiply previous exponents by -1 |
---|
| 843 | if ( ! outList.empty() ) { |
---|
| 844 | RpUnits::negateListExponents(outList); |
---|
| 845 | } |
---|
| 846 | continue; |
---|
| 847 | } |
---|
| 848 | |
---|
| 849 | // get the exponent |
---|
| 850 | offset = RpUnits::grabExponent(myInUnits,&exponent); |
---|
| 851 | myInUnits.erase(offset); |
---|
| 852 | idx = offset - 1; |
---|
| 853 | |
---|
| 854 | // grab the largest string we can find |
---|
| 855 | offset = RpUnits::grabUnitString(myInUnits); |
---|
| 856 | idx = offset; |
---|
| 857 | |
---|
| 858 | // figure out if we have some defined units in that string |
---|
| 859 | sendUnitStr = myInUnits.substr(offset,std::string::npos); |
---|
| 860 | unit = grabUnits(sendUnitStr,&offset); |
---|
| 861 | if (unit) { |
---|
| 862 | // a unit was found |
---|
| 863 | // add this unit to the list |
---|
| 864 | // erase the found unit's name from our search string |
---|
| 865 | outList.push_front(RpUnitsListEntry(unit,exponent)); |
---|
| 866 | myInUnits.erase(idx+offset); |
---|
| 867 | } |
---|
| 868 | else { |
---|
| 869 | // we came across a unit we did not recognize |
---|
| 870 | // raise error and delete character for now |
---|
| 871 | myInUnits.erase(last); |
---|
| 872 | } |
---|
| 873 | |
---|
| 874 | // reset our vars |
---|
| 875 | idx = 0; |
---|
| 876 | offset = 0; |
---|
| 877 | exponent = 1; |
---|
| 878 | } |
---|
| 879 | |
---|
| 880 | return 0; |
---|
| 881 | } |
---|
| 882 | |
---|
[121] | 883 | /**********************************************************************/ |
---|
| 884 | // METHOD: compareListEntryBasis() |
---|
| 885 | /// Compare two RpUnits objects to see if they are related by a basis |
---|
| 886 | /** |
---|
| 887 | * One step in converting between Rappture Units Objects is to check |
---|
| 888 | * to see if the conversion is an intra-basis conversion. Intra-basis |
---|
| 889 | * conversions include those where all conversions are done within |
---|
| 890 | * the same basis. |
---|
| 891 | * |
---|
| 892 | * Examples of intra-basis conversions include: |
---|
| 893 | * m -> cm ( meters to centimeters ) |
---|
| 894 | * cm -> m ( centimeters to meters ) |
---|
| 895 | * cm -> nm ( centimenters to nanometers ) |
---|
| 896 | */ |
---|
| 897 | |
---|
[116] | 898 | int RpUnits::compareListEntryBasis ( RpUnitsList& fromList, |
---|
| 899 | RpUnitsListIter& fromIter, |
---|
| 900 | RpUnitsListIter& toIter ) { |
---|
| 901 | |
---|
| 902 | const RpUnits* toBasis = NULL; |
---|
| 903 | const RpUnits* fromBasis = NULL; |
---|
| 904 | int retVal = 1; |
---|
| 905 | double fromExp = 0; |
---|
| 906 | double toExp = 0; |
---|
| 907 | |
---|
| 908 | fromIter = fromList.begin(); |
---|
| 909 | |
---|
| 910 | // get the basis of the object being stored |
---|
| 911 | // if the basis is NULL, then we'll compare the object |
---|
| 912 | // itself because the object is the basis. |
---|
| 913 | toBasis = toIter->getBasis(); |
---|
| 914 | if (toBasis == NULL) { |
---|
| 915 | toBasis = toIter->getUnitsObj(); |
---|
| 916 | } |
---|
| 917 | |
---|
| 918 | toExp = toIter->getExponent(); |
---|
| 919 | |
---|
| 920 | while ( fromIter != fromList.end() ) { |
---|
| 921 | |
---|
| 922 | fromExp = fromIter->getExponent(); |
---|
| 923 | |
---|
| 924 | // in order to convert, exponents must be equal. |
---|
| 925 | if (fromExp == toExp) { |
---|
| 926 | |
---|
| 927 | // get the basis of the object being stored |
---|
| 928 | // if the basis is NULL, then we'll compare the object |
---|
| 929 | // itself because the object is the basis. |
---|
| 930 | fromBasis = fromIter->getBasis(); |
---|
| 931 | if (fromBasis == NULL) { |
---|
| 932 | fromBasis = fromIter->getUnitsObj(); |
---|
| 933 | } |
---|
| 934 | |
---|
| 935 | if (toBasis == fromBasis) { |
---|
| 936 | // conversion needed between 2 units of the same basis. |
---|
| 937 | // these two units could actually be the same unit (m->m) |
---|
| 938 | retVal = 0; |
---|
| 939 | break; |
---|
| 940 | } |
---|
| 941 | } |
---|
| 942 | |
---|
| 943 | fromIter++; |
---|
| 944 | } |
---|
| 945 | |
---|
| 946 | return retVal; |
---|
| 947 | } |
---|
| 948 | |
---|
[121] | 949 | /**********************************************************************/ |
---|
| 950 | // METHOD: compareListEntrySearch() |
---|
| 951 | /// this function will soon be removed. |
---|
| 952 | /** |
---|
| 953 | */ |
---|
| 954 | |
---|
[116] | 955 | int RpUnits::compareListEntrySearch ( RpUnitsList& fromList, |
---|
| 956 | RpUnitsListIter& fromIter, |
---|
| 957 | RpUnitsListIter& toIter ) { |
---|
| 958 | |
---|
| 959 | const RpUnits* toBasis = NULL; |
---|
| 960 | const RpUnits* fromBasis = NULL; |
---|
| 961 | int retVal = 1; |
---|
| 962 | |
---|
| 963 | fromIter = fromList.begin(); |
---|
| 964 | |
---|
| 965 | // get the basis of the object being stored |
---|
| 966 | // if the basis is NULL, then we'll compare the object |
---|
| 967 | // itself because the object is the basis. |
---|
| 968 | toBasis = toIter->getBasis(); |
---|
| 969 | if (toBasis == NULL) { |
---|
| 970 | toBasis = toIter->getUnitsObj(); |
---|
| 971 | } |
---|
| 972 | |
---|
| 973 | while ( fromIter != fromList.end() ) { |
---|
| 974 | |
---|
| 975 | // get the basis of the object being stored |
---|
| 976 | // if the basis is NULL, then we'll compare the object |
---|
| 977 | // itself because the object is the basis. |
---|
| 978 | fromBasis = fromIter->getBasis(); |
---|
| 979 | if (fromBasis == NULL) { |
---|
| 980 | fromBasis = fromIter->getUnitsObj(); |
---|
| 981 | } |
---|
| 982 | |
---|
| 983 | if (toBasis == fromBasis) { |
---|
| 984 | // conversion needed between 2 units of the same basis. |
---|
| 985 | // these two units could actually be the same unit (m->m) |
---|
| 986 | retVal = 0; |
---|
| 987 | break; |
---|
| 988 | } |
---|
| 989 | |
---|
| 990 | fromIter++; |
---|
| 991 | } |
---|
| 992 | |
---|
| 993 | return retVal; |
---|
| 994 | } |
---|
| 995 | |
---|
[121] | 996 | /**********************************************************************/ |
---|
| 997 | // METHOD: convert() |
---|
| 998 | /// Convert between RpUnits return a string value with or without units |
---|
| 999 | /** |
---|
| 1000 | * Convert function so people can just send in two strings and |
---|
| 1001 | * we'll see if the units exists and do a conversion |
---|
| 1002 | * Example: |
---|
| 1003 | * strVal = RpUnits::convert("300K","C",1); |
---|
| 1004 | * |
---|
| 1005 | * Returns a string with or without units. |
---|
| 1006 | */ |
---|
| 1007 | |
---|
[83] | 1008 | std::string |
---|
| 1009 | RpUnits::convert ( std::string val, |
---|
| 1010 | std::string toUnitsName, |
---|
[68] | 1011 | int showUnits, |
---|
| 1012 | int* result ) { |
---|
[20] | 1013 | |
---|
[116] | 1014 | RpUnitsList toUnitsList; |
---|
| 1015 | RpUnitsList fromUnitsList; |
---|
| 1016 | |
---|
| 1017 | RpUnitsListIter toIter; |
---|
| 1018 | RpUnitsListIter fromIter; |
---|
| 1019 | RpUnitsListIter tempIter; |
---|
| 1020 | |
---|
[104] | 1021 | const RpUnits* toUnits = NULL; |
---|
| 1022 | const RpUnits* fromUnits = NULL; |
---|
[116] | 1023 | |
---|
[68] | 1024 | std::string tmpNumVal = ""; |
---|
| 1025 | std::string fromUnitsName = ""; |
---|
| 1026 | std::string convVal = ""; |
---|
[116] | 1027 | double origNumVal = 0; |
---|
[68] | 1028 | double numVal = 0; |
---|
[116] | 1029 | double toExp = 0; |
---|
| 1030 | double fromExp = 0; |
---|
[68] | 1031 | int convResult = 0; |
---|
[102] | 1032 | char* endptr = NULL; |
---|
| 1033 | std::stringstream outVal; |
---|
[68] | 1034 | |
---|
[116] | 1035 | int rv = 0; |
---|
| 1036 | double factor = 1; |
---|
[68] | 1037 | |
---|
[116] | 1038 | |
---|
[68] | 1039 | // set default result flag/error code |
---|
| 1040 | if (result) { |
---|
| 1041 | *result = 0; |
---|
| 1042 | } |
---|
| 1043 | |
---|
[116] | 1044 | // search our string to see where the numeric part stops |
---|
| 1045 | // and the units part starts |
---|
| 1046 | // |
---|
| 1047 | // convert("5J", "neV") => 3.12075e+28neV |
---|
| 1048 | // convert("3.12075e+28neV", "J") => 4.99999J |
---|
| 1049 | // now we can actually get the scientific notation portion of the string. |
---|
| 1050 | // |
---|
| 1051 | |
---|
| 1052 | numVal = strtod(val.c_str(),&endptr); |
---|
| 1053 | origNumVal = numVal; |
---|
| 1054 | |
---|
| 1055 | if ( (numVal == 0) && (endptr == val.c_str()) ) { |
---|
| 1056 | // no conversion was done. |
---|
| 1057 | // number in incorrect format probably. |
---|
| 1058 | if (result) { |
---|
| 1059 | *result = 1; |
---|
| 1060 | } |
---|
| 1061 | return val; |
---|
| 1062 | } |
---|
| 1063 | |
---|
| 1064 | fromUnitsName = std::string(endptr); |
---|
[118] | 1065 | |
---|
[387] | 1066 | if (toUnitsName.empty()) { |
---|
| 1067 | // there were no units in the input |
---|
| 1068 | // string or no conversion needed |
---|
| 1069 | // assume fromUnitsName = toUnitsName |
---|
| 1070 | // return the correct value |
---|
| 1071 | if (result) { |
---|
| 1072 | *result = 0; |
---|
| 1073 | } |
---|
| 1074 | |
---|
| 1075 | if (showUnits) { |
---|
| 1076 | outVal << numVal << fromUnitsName; |
---|
| 1077 | } |
---|
| 1078 | else { |
---|
| 1079 | outVal << numVal; |
---|
| 1080 | } |
---|
| 1081 | |
---|
| 1082 | return std::string(outVal.str()); |
---|
| 1083 | } |
---|
| 1084 | |
---|
[118] | 1085 | // check if the fromUnitsName is empty or |
---|
| 1086 | // if the fromUnitsName == toUnitsName |
---|
| 1087 | // these are conditions where no conversion is needed |
---|
| 1088 | if ( (fromUnitsName.empty()) || (toUnitsName == fromUnitsName) ) { |
---|
| 1089 | // there were no units in the input |
---|
| 1090 | // string or no conversion needed |
---|
[116] | 1091 | // assume fromUnitsName = toUnitsName |
---|
| 1092 | // return the correct value |
---|
| 1093 | if (result) { |
---|
| 1094 | *result = 0; |
---|
| 1095 | } |
---|
| 1096 | |
---|
| 1097 | if (showUnits) { |
---|
[119] | 1098 | outVal << numVal << toUnitsName; |
---|
[116] | 1099 | } |
---|
| 1100 | else { |
---|
[119] | 1101 | outVal << numVal; |
---|
[116] | 1102 | } |
---|
| 1103 | |
---|
| 1104 | return std::string(outVal.str()); |
---|
| 1105 | } |
---|
| 1106 | |
---|
| 1107 | RpUnits::units2list(toUnitsName,toUnitsList); |
---|
| 1108 | RpUnits::units2list(fromUnitsName,fromUnitsList); |
---|
| 1109 | |
---|
| 1110 | toIter = toUnitsList.begin(); |
---|
| 1111 | |
---|
| 1112 | // pass 1: compare basis' of objects to find intra-basis conversions |
---|
| 1113 | while ( toIter != toUnitsList.end() ) { |
---|
| 1114 | rv = RpUnits::compareListEntryBasis(fromUnitsList, fromIter, toIter); |
---|
| 1115 | if (rv == 0) { |
---|
| 1116 | |
---|
| 1117 | // check the names of the units provided by the user |
---|
| 1118 | // if the names are the same, no need to do a conversion |
---|
| 1119 | if (fromIter->name() != toIter->name()) { |
---|
| 1120 | |
---|
| 1121 | // do an intra-basis conversion |
---|
| 1122 | toUnits = toIter->getUnitsObj(); |
---|
| 1123 | fromUnits = fromIter->getUnitsObj(); |
---|
| 1124 | |
---|
| 1125 | // do conversions |
---|
| 1126 | factor = 1; |
---|
| 1127 | factor = fromUnits->convert(toUnits, factor, &convResult); |
---|
| 1128 | numVal *= pow(factor,toIter->getExponent()); |
---|
| 1129 | } |
---|
| 1130 | |
---|
| 1131 | // remove the elements from the lists |
---|
| 1132 | tempIter = toIter; |
---|
[147] | 1133 | toIter = toUnitsList.erase(tempIter); |
---|
| 1134 | // toUnitsList.erase(tempIter); |
---|
| 1135 | // toIter++; |
---|
[116] | 1136 | |
---|
| 1137 | tempIter = fromIter; |
---|
| 1138 | fromUnitsList.erase(tempIter); |
---|
| 1139 | } |
---|
| 1140 | else { |
---|
| 1141 | // this is not an intra-basis conversion. |
---|
| 1142 | // move onto the next toIter |
---|
| 1143 | toIter++; |
---|
| 1144 | } |
---|
| 1145 | } |
---|
| 1146 | |
---|
| 1147 | toIter = toUnitsList.begin(); |
---|
| 1148 | fromIter = fromUnitsList.begin(); |
---|
| 1149 | |
---|
| 1150 | // pass 2: look for inter-basis conversions |
---|
| 1151 | if (fromIter != fromUnitsList.end()) { |
---|
| 1152 | // double while loop to compare each toIter with each fromIter. |
---|
| 1153 | // the outter while checks the toIter and the inner while |
---|
| 1154 | // which is conveniently hidden, adjusts the fromIter and toIter |
---|
| 1155 | // (at the bottom in the else statement). |
---|
| 1156 | while (toIter != toUnitsList.end()) { |
---|
| 1157 | |
---|
| 1158 | toUnits = toIter->getUnitsObj(); |
---|
| 1159 | fromUnits = fromIter->getUnitsObj(); |
---|
| 1160 | |
---|
| 1161 | // do an inter-basis conversion...the slow way |
---|
| 1162 | // there has to be a better way to do this... |
---|
| 1163 | convResult = 1; |
---|
| 1164 | |
---|
| 1165 | // in order to convert, exponents must be equal. |
---|
| 1166 | fromExp = fromIter->getExponent(); |
---|
| 1167 | toExp = toIter->getExponent(); |
---|
| 1168 | |
---|
| 1169 | if (fromExp == toExp) { |
---|
| 1170 | if (toExp == 1) { |
---|
| 1171 | numVal = fromUnits->convert(toUnits, numVal, &convResult); |
---|
| 1172 | } |
---|
| 1173 | else { |
---|
| 1174 | factor = 1; |
---|
| 1175 | factor = fromUnits->convert(toUnits, factor, &convResult); |
---|
| 1176 | numVal *= pow(factor,toExp); |
---|
| 1177 | } |
---|
| 1178 | } |
---|
| 1179 | |
---|
| 1180 | if (convResult == 0) { |
---|
| 1181 | // successful conversion reported |
---|
| 1182 | // remove the elements from the lists |
---|
| 1183 | tempIter = toIter; |
---|
| 1184 | toUnitsList.erase(tempIter); |
---|
| 1185 | toIter++; |
---|
| 1186 | |
---|
| 1187 | tempIter = fromIter; |
---|
| 1188 | fromUnitsList.erase(tempIter); |
---|
| 1189 | |
---|
| 1190 | // conversion complete, jump out of the |
---|
| 1191 | // while loop |
---|
| 1192 | break; |
---|
| 1193 | } |
---|
| 1194 | else { |
---|
| 1195 | // conversion was unsuccessful |
---|
| 1196 | // move onto the next fromIter |
---|
| 1197 | fromIter++; |
---|
| 1198 | if (fromIter == fromUnitsList.end()) { |
---|
| 1199 | // this is not an inter-basis conversion. |
---|
| 1200 | // move onto the next toIter |
---|
| 1201 | fromIter = fromUnitsList.begin(); |
---|
| 1202 | toIter++; |
---|
| 1203 | } |
---|
| 1204 | } // end unsuccessful conversion |
---|
| 1205 | } // end toIter while loop |
---|
| 1206 | } // end |
---|
| 1207 | |
---|
| 1208 | |
---|
| 1209 | |
---|
| 1210 | if ( (result) && (*result == 0) ) { |
---|
| 1211 | *result = convResult; |
---|
| 1212 | } |
---|
| 1213 | |
---|
[525] | 1214 | // outVal.flags(std::ios::fixed); |
---|
| 1215 | // outVal.precision(10); |
---|
| 1216 | |
---|
[116] | 1217 | if (showUnits) { |
---|
| 1218 | outVal << numVal << toUnitsName; |
---|
| 1219 | } |
---|
| 1220 | else { |
---|
| 1221 | outVal << numVal; |
---|
| 1222 | } |
---|
| 1223 | |
---|
| 1224 | return std::string(outVal.str()); |
---|
| 1225 | |
---|
| 1226 | } |
---|
| 1227 | |
---|
[121] | 1228 | /**********************************************************************/ |
---|
| 1229 | // METHOD: convert() |
---|
| 1230 | /// Convert between RpUnits return a string value with or without units |
---|
| 1231 | /** |
---|
| 1232 | * Returns a string value with or without units. |
---|
| 1233 | */ |
---|
| 1234 | |
---|
[116] | 1235 | std::string |
---|
[104] | 1236 | RpUnits::convert ( const RpUnits* toUnits, |
---|
| 1237 | double val, |
---|
| 1238 | int showUnits, |
---|
| 1239 | int* result ) const { |
---|
| 1240 | |
---|
[83] | 1241 | double retVal = convert(toUnits,val,result); |
---|
[20] | 1242 | std::stringstream unitText; |
---|
| 1243 | |
---|
[83] | 1244 | |
---|
[20] | 1245 | if (showUnits) { |
---|
[103] | 1246 | unitText << retVal << toUnits->getUnitsName(); |
---|
[20] | 1247 | } |
---|
| 1248 | else { |
---|
| 1249 | unitText << retVal; |
---|
| 1250 | } |
---|
| 1251 | |
---|
[116] | 1252 | return (std::string(unitText.str())); |
---|
[20] | 1253 | |
---|
| 1254 | } |
---|
| 1255 | |
---|
[121] | 1256 | /**********************************************************************/ |
---|
| 1257 | // METHOD: convert() |
---|
| 1258 | /// Convert between RpUnits using an RpUnits Object to describe toUnit. |
---|
| 1259 | /** |
---|
| 1260 | * User function to convert a value to the provided RpUnits* toUnits |
---|
| 1261 | * if it exists as a conversion from the basis |
---|
| 1262 | * example |
---|
| 1263 | * cm.convert(meter,10) |
---|
| 1264 | * cm.convert(angstrum,100) |
---|
| 1265 | * |
---|
| 1266 | * Returns a double value without units. |
---|
| 1267 | */ |
---|
| 1268 | |
---|
[104] | 1269 | double |
---|
| 1270 | RpUnits::convert(const RpUnits* toUnit, double val, int* result) const { |
---|
[20] | 1271 | |
---|
| 1272 | // currently we convert this object to its basis and look for the |
---|
[73] | 1273 | // connection to the toUnit object from the basis. |
---|
[20] | 1274 | |
---|
| 1275 | double value = val; |
---|
[104] | 1276 | const RpUnits* toBasis = toUnit->getBasis(); |
---|
| 1277 | const RpUnits* fromUnit = this; |
---|
| 1278 | const RpUnits* dictToUnit = NULL; |
---|
[20] | 1279 | convEntry *p; |
---|
| 1280 | int my_result = 0; |
---|
| 1281 | |
---|
| 1282 | // set *result to a default value |
---|
| 1283 | if (result) { |
---|
[116] | 1284 | *result = 1; |
---|
[20] | 1285 | } |
---|
| 1286 | |
---|
| 1287 | // guard against converting to the units you are converting from... |
---|
| 1288 | // ie. meters->meters |
---|
[103] | 1289 | if (this->getUnitsName() == toUnit->getUnitsName()) { |
---|
[20] | 1290 | if (result) { |
---|
[76] | 1291 | *result = 0; |
---|
[20] | 1292 | } |
---|
| 1293 | return val; |
---|
| 1294 | } |
---|
[83] | 1295 | |
---|
[20] | 1296 | // convert unit to the basis |
---|
| 1297 | // makeBasis(&value); |
---|
| 1298 | // trying to avoid the recursive way of converting to the basis. |
---|
| 1299 | // need to rethink this. |
---|
| 1300 | // |
---|
[103] | 1301 | if ( (basis) && (basis->getUnitsName() != toUnit->getUnitsName()) ) { |
---|
[20] | 1302 | value = convert(basis,value,&my_result); |
---|
[79] | 1303 | if (my_result == 0) { |
---|
[20] | 1304 | fromUnit = basis; |
---|
[83] | 1305 | } |
---|
[20] | 1306 | } |
---|
| 1307 | |
---|
| 1308 | // find the toUnit in our dictionary. |
---|
[80] | 1309 | // if the toUnits has a basis, we need to search for the basis |
---|
| 1310 | // and convert between basis' and then convert again back to the |
---|
| 1311 | // original unit. |
---|
[103] | 1312 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
| 1313 | dictToUnit = find(toBasis->getUnitsName()); |
---|
[80] | 1314 | } |
---|
| 1315 | else { |
---|
[103] | 1316 | dictToUnit = find(toUnit->getUnitsName()); |
---|
[80] | 1317 | } |
---|
[20] | 1318 | |
---|
| 1319 | // did we find the unit in the dictionary? |
---|
| 1320 | if (dictToUnit == NULL) { |
---|
| 1321 | // toUnit was not found in the dictionary |
---|
| 1322 | return val; |
---|
| 1323 | } |
---|
| 1324 | |
---|
| 1325 | // search through the conversion list to find |
---|
| 1326 | // the conversion to the toUnit. |
---|
| 1327 | |
---|
| 1328 | if (basis) { |
---|
| 1329 | p = basis->convList; |
---|
| 1330 | } |
---|
| 1331 | else { |
---|
| 1332 | p = this->convList; |
---|
| 1333 | } |
---|
| 1334 | |
---|
| 1335 | if (p == NULL) { |
---|
| 1336 | // there are no conversions |
---|
| 1337 | return val; |
---|
| 1338 | } |
---|
| 1339 | |
---|
| 1340 | // loop through our conversion list looking for the correct conversion |
---|
| 1341 | do { |
---|
[83] | 1342 | |
---|
[20] | 1343 | if ( (p->conv->toPtr == dictToUnit) && (p->conv->fromPtr == fromUnit) ) { |
---|
| 1344 | // we found our conversion |
---|
| 1345 | // call the function pointer with value |
---|
| 1346 | |
---|
[103] | 1347 | // this should probably be re thought out |
---|
| 1348 | // the problem is that convForwFxnPtr has the conversion for a |
---|
| 1349 | // one arg conv function pointer and convForwFxnPtrDD has the |
---|
| 1350 | // conversion for a two arg conv function pointer |
---|
| 1351 | // need to make this simpler, more logical maybe only allow 2 arg |
---|
| 1352 | if ( (p->conv->convForwFxnPtr) |
---|
| 1353 | && (! p->conv->convForwFxnPtrDD) ) { |
---|
[83] | 1354 | |
---|
[103] | 1355 | value = p->conv->convForwFxnPtr(value); |
---|
| 1356 | } |
---|
| 1357 | else if ( (p->conv->convForwFxnPtrDD) |
---|
| 1358 | && (! p->conv->convForwFxnPtr) ) { |
---|
| 1359 | |
---|
| 1360 | value = |
---|
| 1361 | p->conv->convForwFxnPtrDD(value, fromUnit->getExponent()); |
---|
| 1362 | } |
---|
| 1363 | |
---|
[80] | 1364 | // check to see if we converted to the actual requested unit |
---|
| 1365 | // or to the requested unit's basis. |
---|
| 1366 | // if we converted to the requested unit's basis. we need to |
---|
| 1367 | // do one last conversion from the requested unit's basis back |
---|
| 1368 | // to the requested unit. |
---|
[103] | 1369 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
[80] | 1370 | my_result = 0; |
---|
| 1371 | value = toBasis->convert(toUnit,value,&my_result); |
---|
| 1372 | if (my_result != 0) { |
---|
| 1373 | if (result) { |
---|
| 1374 | *result += 1; |
---|
| 1375 | } |
---|
| 1376 | } |
---|
| 1377 | } |
---|
[83] | 1378 | |
---|
[116] | 1379 | // change the result code to zero, a conversion was performed |
---|
| 1380 | // (we think)... its ture that it is possible to get to this |
---|
| 1381 | // point and have skipped the conversion because the |
---|
| 1382 | // conversion object was not properly created... |
---|
| 1383 | // ie. both fxn ptrs were null or neither fxn ptr was null |
---|
| 1384 | // |
---|
| 1385 | if (result && (*result == 1)) { |
---|
| 1386 | *result = 0; |
---|
[20] | 1387 | } |
---|
| 1388 | break; |
---|
| 1389 | } |
---|
[83] | 1390 | |
---|
[20] | 1391 | if ( (p->conv->toPtr == fromUnit) && (p->conv->fromPtr == dictToUnit) ) { |
---|
| 1392 | // we found our conversion |
---|
| 1393 | // call the function pointer with value |
---|
| 1394 | |
---|
[103] | 1395 | // this should probably be re thought out |
---|
| 1396 | // the problem is that convForwFxnPtr has the conversion for a |
---|
| 1397 | // one arg conv function pointer and convForwFxnPtrDD has the |
---|
| 1398 | // conversion for a two arg conv function pointer |
---|
| 1399 | // need to make this simpler, more logical maybe only allow 2 arg |
---|
| 1400 | if ( (p->conv->convBackFxnPtr) |
---|
| 1401 | && (! p->conv->convBackFxnPtrDD) ) { |
---|
[83] | 1402 | |
---|
[103] | 1403 | value = p->conv->convBackFxnPtr(value); |
---|
| 1404 | } |
---|
| 1405 | else if ( (p->conv->convBackFxnPtrDD) |
---|
| 1406 | && (! p->conv->convBackFxnPtr) ) { |
---|
| 1407 | |
---|
| 1408 | value = |
---|
| 1409 | p->conv->convBackFxnPtrDD(value, fromUnit->getExponent()); |
---|
| 1410 | } |
---|
| 1411 | |
---|
[80] | 1412 | // check to see if we converted to the actual requested unit |
---|
| 1413 | // or to the requested unit's basis. |
---|
| 1414 | // if we converted to the requested unit's basis. we need to |
---|
| 1415 | // do one last conversion from the requested unit's basis back |
---|
| 1416 | // to the requested unit. |
---|
[103] | 1417 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
[80] | 1418 | my_result = 0; |
---|
| 1419 | value = toBasis->convert(toUnit,value,&my_result); |
---|
| 1420 | if (my_result != 0) { |
---|
| 1421 | if (result) { |
---|
| 1422 | *result += 1; |
---|
| 1423 | } |
---|
| 1424 | } |
---|
| 1425 | } |
---|
[83] | 1426 | |
---|
[116] | 1427 | // change the result code to zero, a conversion was performed |
---|
| 1428 | // (we think)... its ture that it is possible to get to this |
---|
| 1429 | // point and have skipped the conversion because the |
---|
| 1430 | // conversion object was not properly created... |
---|
| 1431 | // ie. both fxn ptrs were null or neither fxn ptr was null |
---|
| 1432 | // |
---|
| 1433 | if (result && (*result == 1)) { |
---|
| 1434 | *result = 0; |
---|
[20] | 1435 | } |
---|
| 1436 | break; |
---|
| 1437 | } |
---|
| 1438 | |
---|
| 1439 | p = p->next; |
---|
| 1440 | |
---|
| 1441 | } while (p != NULL); |
---|
| 1442 | |
---|
| 1443 | |
---|
| 1444 | if ( p == NULL) { |
---|
| 1445 | // we did not find the conversion |
---|
[80] | 1446 | if (result) { |
---|
| 1447 | *result += 1; |
---|
| 1448 | } |
---|
[20] | 1449 | return val; |
---|
| 1450 | } |
---|
| 1451 | |
---|
| 1452 | // we found the conversion. |
---|
| 1453 | // return the converted value. |
---|
| 1454 | return value; |
---|
| 1455 | |
---|
| 1456 | } |
---|
| 1457 | |
---|
| 1458 | |
---|
[121] | 1459 | /**********************************************************************/ |
---|
| 1460 | // METHOD: convert() |
---|
| 1461 | /// Convert a value between RpUnits using user defined conversions |
---|
| 1462 | /** |
---|
| 1463 | */ |
---|
| 1464 | |
---|
[104] | 1465 | void* |
---|
| 1466 | RpUnits::convert(const RpUnits* toUnit, void* val, int* result) const { |
---|
[20] | 1467 | |
---|
| 1468 | // currently we convert this object to its basis and look for the |
---|
| 1469 | // connection ot the toUnit object from the basis. |
---|
| 1470 | |
---|
| 1471 | void* value = val; |
---|
[104] | 1472 | const RpUnits* toBasis = toUnit->getBasis(); |
---|
| 1473 | const RpUnits* fromUnit = this; |
---|
| 1474 | const RpUnits* dictToUnit = NULL; |
---|
[20] | 1475 | convEntry *p; |
---|
| 1476 | int my_result = 0; |
---|
| 1477 | |
---|
| 1478 | // set *result to a default value |
---|
| 1479 | if (result) { |
---|
[116] | 1480 | *result = 1; |
---|
[20] | 1481 | } |
---|
| 1482 | |
---|
| 1483 | // guard against converting to the units you are converting from... |
---|
| 1484 | // ie. meters->meters |
---|
[103] | 1485 | if (this->getUnitsName() == toUnit->getUnitsName()) { |
---|
[20] | 1486 | if (result) { |
---|
[76] | 1487 | *result = 0; |
---|
[20] | 1488 | } |
---|
| 1489 | return val; |
---|
| 1490 | } |
---|
[83] | 1491 | |
---|
[20] | 1492 | // convert unit to the basis |
---|
| 1493 | // makeBasis(&value); |
---|
| 1494 | // trying to avoid the recursive way of converting to the basis. |
---|
| 1495 | // need to rethink this. |
---|
[83] | 1496 | // |
---|
[103] | 1497 | if ( (basis) && (basis->getUnitsName() != toUnit->getUnitsName()) ) { |
---|
[20] | 1498 | value = convert(basis,value,&my_result); |
---|
[79] | 1499 | if (my_result == 0) { |
---|
[20] | 1500 | fromUnit = basis; |
---|
[83] | 1501 | } |
---|
[20] | 1502 | } |
---|
| 1503 | |
---|
| 1504 | // find the toUnit in our dictionary. |
---|
[80] | 1505 | // if the toUnits has a basis, we need to search for the basis |
---|
| 1506 | // and convert between basis' and then convert again back to the |
---|
| 1507 | // original unit. |
---|
[103] | 1508 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
| 1509 | dictToUnit = find(toBasis->getUnitsName()); |
---|
[80] | 1510 | } |
---|
| 1511 | else { |
---|
[103] | 1512 | dictToUnit = find(toUnit->getUnitsName()); |
---|
[80] | 1513 | } |
---|
[20] | 1514 | |
---|
| 1515 | // did we find the unit in the dictionary? |
---|
| 1516 | if (dictToUnit == NULL) { |
---|
| 1517 | // toUnit was not found in the dictionary |
---|
| 1518 | return val; |
---|
| 1519 | } |
---|
| 1520 | |
---|
| 1521 | // search through the conversion list to find |
---|
| 1522 | // the conversion to the toUnit. |
---|
| 1523 | |
---|
| 1524 | if (basis) { |
---|
| 1525 | p = basis->convList; |
---|
| 1526 | } |
---|
| 1527 | else { |
---|
| 1528 | p = this->convList; |
---|
| 1529 | } |
---|
| 1530 | |
---|
| 1531 | if (p == NULL) { |
---|
| 1532 | // there are no conversions |
---|
| 1533 | return val; |
---|
| 1534 | } |
---|
| 1535 | |
---|
| 1536 | // loop through our conversion list looking for the correct conversion |
---|
| 1537 | do { |
---|
[83] | 1538 | |
---|
[20] | 1539 | if ( (p->conv->toPtr == dictToUnit) && (p->conv->fromPtr == fromUnit) ) { |
---|
| 1540 | // we found our conversion |
---|
| 1541 | // call the function pointer with value |
---|
| 1542 | |
---|
| 1543 | value = p->conv->convForwFxnPtrVoid(p->conv->convForwData,value); |
---|
| 1544 | |
---|
[80] | 1545 | // check to see if we converted to the actual requested unit |
---|
| 1546 | // or to the requested unit's basis. |
---|
| 1547 | // if we converted to the requested unit's basis. we need to |
---|
| 1548 | // do one last conversion from the requested unit's basis back |
---|
| 1549 | // to the requested unit. |
---|
[103] | 1550 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
[80] | 1551 | my_result = 0; |
---|
| 1552 | value = toBasis->convert(toUnit,value,&my_result); |
---|
| 1553 | if (my_result != 0) { |
---|
| 1554 | if (result) { |
---|
| 1555 | *result += 1; |
---|
| 1556 | } |
---|
| 1557 | } |
---|
| 1558 | } |
---|
[83] | 1559 | |
---|
[116] | 1560 | // change the result code to zero, a conversion was performed |
---|
| 1561 | // (we think)... its ture that it is possible to get to this |
---|
| 1562 | // point and have skipped the conversion because the |
---|
| 1563 | // conversion object was not properly created... |
---|
| 1564 | // ie. both fxn ptrs were null or neither fxn ptr was null |
---|
| 1565 | // |
---|
| 1566 | if (result && (*result == 1)) { |
---|
[76] | 1567 | *result = 0; |
---|
[20] | 1568 | } |
---|
| 1569 | break; |
---|
| 1570 | } |
---|
[83] | 1571 | |
---|
[20] | 1572 | if ( (p->conv->toPtr == fromUnit) && (p->conv->fromPtr == dictToUnit) ) { |
---|
| 1573 | // we found our conversion |
---|
| 1574 | // call the function pointer with value |
---|
| 1575 | |
---|
| 1576 | value = p->conv->convBackFxnPtrVoid(p->conv->convBackData,value); |
---|
[80] | 1577 | |
---|
| 1578 | // check to see if we converted to the actual requested unit |
---|
| 1579 | // or to the requested unit's basis. |
---|
| 1580 | // if we converted to the requested unit's basis. we need to |
---|
| 1581 | // do one last conversion from the requested unit's basis back |
---|
| 1582 | // to the requested unit. |
---|
[103] | 1583 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
[80] | 1584 | my_result = 0; |
---|
| 1585 | value = toBasis->convert(toUnit,value,&my_result); |
---|
| 1586 | if (my_result != 0) { |
---|
| 1587 | if (result) { |
---|
| 1588 | *result += 1; |
---|
| 1589 | } |
---|
| 1590 | } |
---|
| 1591 | } |
---|
[83] | 1592 | |
---|
[116] | 1593 | // change the result code to zero, a conversion was performed |
---|
| 1594 | // (we think)... its ture that it is possible to get to this |
---|
| 1595 | // point and have skipped the conversion because the |
---|
| 1596 | // conversion object was not properly created... |
---|
| 1597 | // ie. both fxn ptrs were null or neither fxn ptr was null |
---|
| 1598 | // |
---|
| 1599 | if (result && (*result == 1)) { |
---|
[76] | 1600 | *result = 0; |
---|
[20] | 1601 | } |
---|
| 1602 | break; |
---|
| 1603 | } |
---|
| 1604 | |
---|
| 1605 | p = p->next; |
---|
| 1606 | |
---|
| 1607 | } while (p != NULL); |
---|
| 1608 | |
---|
| 1609 | |
---|
| 1610 | if ( p == NULL) { |
---|
| 1611 | // we did not find the conversion |
---|
[80] | 1612 | if (result) { |
---|
| 1613 | *result += 1; |
---|
| 1614 | } |
---|
[20] | 1615 | return val; |
---|
| 1616 | } |
---|
| 1617 | |
---|
| 1618 | // we found the conversion. |
---|
| 1619 | // return the converted value. |
---|
| 1620 | return value; |
---|
| 1621 | |
---|
| 1622 | } |
---|
| 1623 | |
---|
[121] | 1624 | /**********************************************************************/ |
---|
| 1625 | // METHOD: insert() |
---|
| 1626 | /// Place an RpUnits Object into the Rappture Units Dictionary. |
---|
| 1627 | /** |
---|
| 1628 | * Return whether the inserted key was new with a non-zero |
---|
| 1629 | * value, or if the key already existed with a value of zero. |
---|
| 1630 | */ |
---|
| 1631 | |
---|
[104] | 1632 | int |
---|
[116] | 1633 | insert(std::string key,RpUnits* val) { |
---|
[104] | 1634 | |
---|
[20] | 1635 | int newRecord = 0; |
---|
[116] | 1636 | // RpUnits* val = this; |
---|
[20] | 1637 | // dict pointer |
---|
| 1638 | RpUnits::dict->set(key,val,&newRecord); |
---|
| 1639 | return newRecord; |
---|
| 1640 | } |
---|
| 1641 | |
---|
[121] | 1642 | /**********************************************************************/ |
---|
| 1643 | // METHOD: connectConversion() |
---|
| 1644 | /// Attach conversion information to a RpUnits Object. |
---|
| 1645 | /** |
---|
| 1646 | */ |
---|
| 1647 | |
---|
[114] | 1648 | void |
---|
| 1649 | RpUnits::connectConversion(conversion* conv) const { |
---|
[104] | 1650 | |
---|
[114] | 1651 | convEntry* p = convList; |
---|
[20] | 1652 | |
---|
| 1653 | if (p == NULL) { |
---|
[114] | 1654 | convList = new convEntry (conv,NULL,NULL); |
---|
[20] | 1655 | } |
---|
| 1656 | else { |
---|
| 1657 | while (p->next != NULL) { |
---|
| 1658 | p = p->next; |
---|
| 1659 | } |
---|
| 1660 | |
---|
[114] | 1661 | p->next = new convEntry (conv,p,NULL); |
---|
[20] | 1662 | } |
---|
| 1663 | |
---|
| 1664 | } |
---|
| 1665 | |
---|
[121] | 1666 | /**********************************************************************/ |
---|
| 1667 | // METHOD: addPresets() |
---|
| 1668 | /// Add a specific set of predefined units to the dictionary |
---|
| 1669 | /** |
---|
| 1670 | */ |
---|
| 1671 | |
---|
[83] | 1672 | int |
---|
[114] | 1673 | RpUnits::addPresets (const std::string group) { |
---|
[76] | 1674 | int retVal = -1; |
---|
[68] | 1675 | if (group.compare("all") == 0) { |
---|
[116] | 1676 | retVal = RpUnitsPreset::addPresetAll(); |
---|
[68] | 1677 | } |
---|
[525] | 1678 | else if (group.compare(RP_TYPE_ENERGY) == 0) { |
---|
[116] | 1679 | retVal = RpUnitsPreset::addPresetEnergy(); |
---|
[68] | 1680 | } |
---|
[525] | 1681 | else if (group.compare(RP_TYPE_LENGTH) == 0) { |
---|
[116] | 1682 | retVal = RpUnitsPreset::addPresetLength(); |
---|
[68] | 1683 | } |
---|
[525] | 1684 | else if (group.compare(RP_TYPE_TEMP) == 0) { |
---|
[116] | 1685 | retVal = RpUnitsPreset::addPresetTemp(); |
---|
[68] | 1686 | } |
---|
[525] | 1687 | else if (group.compare(RP_TYPE_TIME) == 0) { |
---|
[116] | 1688 | retVal = RpUnitsPreset::addPresetTime(); |
---|
[68] | 1689 | } |
---|
[525] | 1690 | else if (group.compare(RP_TYPE_VOLUME) == 0) { |
---|
[382] | 1691 | retVal = RpUnitsPreset::addPresetVolume(); |
---|
[104] | 1692 | } |
---|
[525] | 1693 | else if (group.compare(RP_TYPE_ANGLE) == 0) { |
---|
[382] | 1694 | retVal = RpUnitsPreset::addPresetAngle(); |
---|
| 1695 | } |
---|
[525] | 1696 | else if (group.compare(RP_TYPE_MASS) == 0) { |
---|
| 1697 | retVal = RpUnitsPreset::addPresetMass(); |
---|
| 1698 | } |
---|
| 1699 | else if (group.compare(RP_TYPE_PRESSURE) == 0) { |
---|
| 1700 | retVal = RpUnitsPreset::addPresetPressure(); |
---|
| 1701 | } |
---|
| 1702 | else if (group.compare(RP_TYPE_MISC) == 0) { |
---|
| 1703 | retVal = RpUnitsPreset::addPresetMisc(); |
---|
| 1704 | } |
---|
[83] | 1705 | |
---|
[68] | 1706 | return retVal; |
---|
| 1707 | } |
---|
[83] | 1708 | |
---|
[121] | 1709 | /**********************************************************************/ |
---|
| 1710 | // METHOD: addPresetAll() |
---|
| 1711 | /// Call all of the addPreset* functions. |
---|
| 1712 | /** |
---|
| 1713 | * |
---|
| 1714 | * Add all predefined units to the units dictionary |
---|
| 1715 | * Return codes: 0 success, anything else is error |
---|
| 1716 | */ |
---|
| 1717 | |
---|
[83] | 1718 | int |
---|
[116] | 1719 | RpUnitsPreset::addPresetAll () { |
---|
[20] | 1720 | |
---|
[76] | 1721 | int result = 0; |
---|
[68] | 1722 | |
---|
[76] | 1723 | result += addPresetTime(); |
---|
| 1724 | result += addPresetTemp(); |
---|
| 1725 | result += addPresetLength(); |
---|
| 1726 | result += addPresetEnergy(); |
---|
[103] | 1727 | result += addPresetVolume(); |
---|
[382] | 1728 | result += addPresetAngle(); |
---|
[388] | 1729 | result += addPresetMass(); |
---|
[525] | 1730 | result += addPresetPressure(); |
---|
[388] | 1731 | result += addPresetMisc(); |
---|
[68] | 1732 | |
---|
| 1733 | return 0; |
---|
| 1734 | } |
---|
| 1735 | |
---|
[121] | 1736 | /**********************************************************************/ |
---|
| 1737 | // METHOD: addPresetTime() |
---|
| 1738 | /// Add Time related units to the dictionary |
---|
| 1739 | /** |
---|
| 1740 | * Defines the following units: |
---|
| 1741 | * seconds (s) |
---|
[515] | 1742 | * minutes (min) |
---|
| 1743 | * hours (h) |
---|
| 1744 | * days (d) |
---|
[121] | 1745 | * |
---|
[515] | 1746 | * month and year are not included because simple |
---|
| 1747 | * day->month conversions may be misleading |
---|
| 1748 | * month->year conversions may be included in the future |
---|
| 1749 | * |
---|
[121] | 1750 | * Return codes: 0 success, anything else is error |
---|
| 1751 | */ |
---|
| 1752 | |
---|
[83] | 1753 | int |
---|
[116] | 1754 | RpUnitsPreset::addPresetTime () { |
---|
[68] | 1755 | |
---|
[515] | 1756 | RpUnits* second = RpUnits::define("s", NULL, RP_TYPE_TIME); |
---|
| 1757 | RpUnits* minute = RpUnits::define("min", second, RP_TYPE_TIME); |
---|
| 1758 | RpUnits* hour = RpUnits::define("h", second, RP_TYPE_TIME); |
---|
| 1759 | RpUnits* day = RpUnits::define("d", second, RP_TYPE_TIME); |
---|
[83] | 1760 | |
---|
[515] | 1761 | RpUnits::makeMetric(second); |
---|
[83] | 1762 | |
---|
[68] | 1763 | // add time definitions |
---|
| 1764 | |
---|
[515] | 1765 | RpUnits::define(second, minute, sec2min, min2sec); |
---|
| 1766 | RpUnits::define(second, hour, sec2hour, hour2sec); |
---|
| 1767 | RpUnits::define(second, day, sec2day, day2sec); |
---|
| 1768 | |
---|
[68] | 1769 | return 0; |
---|
| 1770 | } |
---|
| 1771 | |
---|
[121] | 1772 | /**********************************************************************/ |
---|
| 1773 | // METHOD: addPresetTemp() |
---|
| 1774 | /// Add Temperature related units to the dictionary |
---|
| 1775 | /** |
---|
| 1776 | * Defines the following units: |
---|
| 1777 | * fahrenheit (F) |
---|
| 1778 | * celcius (C) |
---|
| 1779 | * kelvin (K) |
---|
| 1780 | * rankine (R) |
---|
| 1781 | * |
---|
| 1782 | * Return codes: 0 success, anything else is error |
---|
| 1783 | */ |
---|
| 1784 | |
---|
[83] | 1785 | int |
---|
[116] | 1786 | RpUnitsPreset::addPresetTemp () { |
---|
[68] | 1787 | |
---|
[262] | 1788 | RpUnits* fahrenheit = RpUnits::define("F", NULL, RP_TYPE_TEMP); |
---|
| 1789 | RpUnits* celcius = RpUnits::define("C", NULL, RP_TYPE_TEMP); |
---|
| 1790 | RpUnits* kelvin = RpUnits::define("K", NULL, RP_TYPE_TEMP); |
---|
| 1791 | RpUnits* rankine = RpUnits::define("R", NULL, RP_TYPE_TEMP); |
---|
[83] | 1792 | |
---|
[68] | 1793 | // add temperature definitions |
---|
| 1794 | RpUnits::define(fahrenheit, celcius, fahrenheit2centigrade, centigrade2fahrenheit); |
---|
| 1795 | RpUnits::define(celcius, kelvin, centigrade2kelvin, kelvin2centigrade); |
---|
| 1796 | RpUnits::define(fahrenheit, kelvin, fahrenheit2kelvin, kelvin2fahrenheit); |
---|
| 1797 | RpUnits::define(rankine, kelvin, rankine2kelvin, kelvin2rankine); |
---|
| 1798 | |
---|
| 1799 | return 0; |
---|
| 1800 | } |
---|
| 1801 | |
---|
[121] | 1802 | /**********************************************************************/ |
---|
| 1803 | // METHOD: addPresetLength() |
---|
| 1804 | /// Add Length related units to the dictionary |
---|
| 1805 | /** |
---|
| 1806 | * Defines the following units: |
---|
| 1807 | * meters (m) |
---|
| 1808 | * angstrom (A) |
---|
| 1809 | * inch (in) |
---|
| 1810 | * feet (ft) |
---|
| 1811 | * yard (yd) |
---|
| 1812 | * |
---|
| 1813 | * Return codes: 0 success, anything else is error |
---|
| 1814 | */ |
---|
| 1815 | |
---|
[83] | 1816 | int |
---|
[116] | 1817 | RpUnitsPreset::addPresetLength () { |
---|
[68] | 1818 | |
---|
[262] | 1819 | RpUnits* meters = RpUnits::define("m", NULL, RP_TYPE_LENGTH); |
---|
| 1820 | RpUnits* angstrom = RpUnits::define("A", NULL, RP_TYPE_LENGTH); |
---|
| 1821 | RpUnits* inch = RpUnits::define("in", NULL, RP_TYPE_LENGTH); |
---|
| 1822 | RpUnits* feet = RpUnits::define("ft", NULL, RP_TYPE_LENGTH); |
---|
| 1823 | RpUnits* yard = RpUnits::define("yd", NULL, RP_TYPE_LENGTH); |
---|
[83] | 1824 | |
---|
[68] | 1825 | RpUnits::makeMetric(meters); |
---|
| 1826 | |
---|
| 1827 | // add length definitions |
---|
| 1828 | RpUnits::define(angstrom, meters, angstrom2meter, meter2angstrom); |
---|
| 1829 | RpUnits::define(inch, meters, inch2meter, meter2inch); |
---|
| 1830 | RpUnits::define(feet, meters, feet2meter, meter2feet); |
---|
| 1831 | RpUnits::define(yard, meters, yard2meter, meter2yard); |
---|
| 1832 | |
---|
| 1833 | return 0; |
---|
| 1834 | } |
---|
| 1835 | |
---|
[121] | 1836 | /**********************************************************************/ |
---|
| 1837 | // METHOD: addPresetEnergy() |
---|
| 1838 | /// Add Energy related units to the dictionary |
---|
| 1839 | /** |
---|
| 1840 | * Defines the following units: |
---|
| 1841 | * volt (V) |
---|
| 1842 | * electron Volt (eV) |
---|
| 1843 | * joule (J) |
---|
| 1844 | * |
---|
| 1845 | * Return codes: 0 success, anything else is error |
---|
| 1846 | */ |
---|
| 1847 | |
---|
[83] | 1848 | int |
---|
[116] | 1849 | RpUnitsPreset::addPresetEnergy () { |
---|
[68] | 1850 | |
---|
[262] | 1851 | RpUnits* volt = RpUnits::define("V", NULL, RP_TYPE_ENERGY); |
---|
| 1852 | RpUnits* eVolt = RpUnits::define("eV", NULL, RP_TYPE_ENERGY); |
---|
| 1853 | RpUnits* joule = RpUnits::define("J", NULL, RP_TYPE_ENERGY); |
---|
[83] | 1854 | |
---|
[73] | 1855 | RpUnits::makeMetric(volt); |
---|
[79] | 1856 | RpUnits::makeMetric(eVolt); |
---|
[83] | 1857 | RpUnits::makeMetric(joule); |
---|
[73] | 1858 | |
---|
[68] | 1859 | // add energy definitions |
---|
[79] | 1860 | RpUnits::define(eVolt,joule,electronVolt2joule,joule2electronVolt); |
---|
[68] | 1861 | |
---|
| 1862 | return 0; |
---|
| 1863 | } |
---|
| 1864 | |
---|
[121] | 1865 | /**********************************************************************/ |
---|
| 1866 | // METHOD: addPresetVolume() |
---|
| 1867 | /// Add Volume related units to the dictionary |
---|
| 1868 | /** |
---|
| 1869 | * Defines the following units: |
---|
| 1870 | * cubic feet (ft3) |
---|
| 1871 | * us gallons (gal) |
---|
| 1872 | * |
---|
| 1873 | * Return codes: 0 success, anything else is error |
---|
| 1874 | */ |
---|
| 1875 | |
---|
[103] | 1876 | int |
---|
[116] | 1877 | RpUnitsPreset::addPresetVolume () { |
---|
[103] | 1878 | |
---|
[262] | 1879 | RpUnits* cubic_meter = RpUnits::define("m3", NULL, RP_TYPE_VOLUME); |
---|
| 1880 | // RpUnits* pcubic_meter = RpUnits::define("/m3", NULL, RP_TYPE_VOLUME); |
---|
| 1881 | RpUnits* cubic_feet = RpUnits::define("ft3", NULL, RP_TYPE_VOLUME); |
---|
| 1882 | RpUnits* us_gallon = RpUnits::define("gal", NULL, RP_TYPE_VOLUME); |
---|
[103] | 1883 | |
---|
| 1884 | RpUnits::makeMetric(cubic_meter); |
---|
| 1885 | |
---|
| 1886 | // add energy definitions |
---|
| 1887 | RpUnits::define(cubic_meter,cubic_feet,meter2feet,feet2meter); |
---|
| 1888 | RpUnits::define(cubic_meter,us_gallon,cubicMeter2usGallon,usGallon2cubicMeter); |
---|
| 1889 | RpUnits::define(cubic_feet,us_gallon,cubicFeet2usGallon,usGallon2cubicFeet); |
---|
| 1890 | |
---|
| 1891 | return 0; |
---|
| 1892 | } |
---|
| 1893 | |
---|
[382] | 1894 | /**********************************************************************/ |
---|
| 1895 | // METHOD: addPresetAngle() |
---|
| 1896 | /// Add Angle related units to the dictionary |
---|
| 1897 | /** |
---|
| 1898 | * Defines the following units: |
---|
| 1899 | * degrees (deg) |
---|
| 1900 | * gradians (grad) |
---|
| 1901 | * radians (rad) (and metric extensions) |
---|
| 1902 | * |
---|
| 1903 | * Return codes: 0 success, anything else is error |
---|
| 1904 | */ |
---|
| 1905 | |
---|
| 1906 | int |
---|
| 1907 | RpUnitsPreset::addPresetAngle () { |
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| 1908 | |
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| 1909 | RpUnits* degree = RpUnits::define("deg", NULL, RP_TYPE_ANGLE); |
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| 1910 | RpUnits* gradian = RpUnits::define("grad", NULL, RP_TYPE_ANGLE); |
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| 1911 | RpUnits* radian = RpUnits::define("rad", NULL, RP_TYPE_ANGLE); |
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| 1912 | |
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| 1913 | RpUnits::makeMetric(radian); |
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| 1914 | |
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| 1915 | // add angle definitions |
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| 1916 | RpUnits::define(degree,gradian,deg2grad,grad2deg); |
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| 1917 | RpUnits::define(radian,degree,rad2deg,deg2rad); |
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| 1918 | RpUnits::define(radian,gradian,rad2grad,grad2rad); |
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| 1919 | |
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| 1920 | return 0; |
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| 1921 | } |
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| 1922 | |
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[388] | 1923 | /**********************************************************************/ |
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| 1924 | // METHOD: addPresetMass() |
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| 1925 | /// Add Mass related units to the dictionary |
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| 1926 | /** |
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| 1927 | * Defines the following units: |
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| 1928 | * gram (g) |
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| 1929 | * |
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| 1930 | * Return codes: 0 success, anything else is error |
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| 1931 | */ |
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| 1932 | |
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| 1933 | int |
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| 1934 | RpUnitsPreset::addPresetMass () { |
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| 1935 | |
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| 1936 | RpUnits* gram = RpUnits::define("g", NULL, RP_TYPE_MASS); |
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| 1937 | |
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| 1938 | RpUnits::makeMetric(gram); |
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| 1939 | |
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| 1940 | // add mass definitions |
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| 1941 | // RpUnits::define(radian,gradian,rad2grad,grad2rad); |
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| 1942 | |
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| 1943 | return 0; |
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| 1944 | } |
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| 1945 | |
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| 1946 | /**********************************************************************/ |
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[525] | 1947 | // METHOD: addPresetPressure() |
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| 1948 | /// Add pressure related units to the dictionary |
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| 1949 | /** |
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| 1950 | * http://www.ilpi.com/msds/ref/pressureunits.html |
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| 1951 | * |
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| 1952 | * Defines the following units: |
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| 1953 | * bar (bar) |
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| 1954 | * pascal (Pa) |
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| 1955 | * pounds/(in^2) (psi) |
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| 1956 | * torr (torr) |
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| 1957 | * millimeters Mercury (mmHg) |
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| 1958 | * |
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| 1959 | * mmHg was added because as a convenience to those who have not |
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| 1960 | * yet switched over to the new representation of torr. |
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| 1961 | * |
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| 1962 | * Return codes: 0 success, anything else is error |
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| 1963 | */ |
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| 1964 | |
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| 1965 | int |
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| 1966 | RpUnitsPreset::addPresetPressure () { |
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| 1967 | |
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| 1968 | RpUnits* atmosphere = RpUnits::define("atm", NULL, RP_TYPE_PRESSURE); |
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| 1969 | RpUnits* bar = RpUnits::define("bar", NULL, RP_TYPE_PRESSURE); |
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| 1970 | RpUnits* pascal = RpUnits::define("Pa", NULL, RP_TYPE_PRESSURE); |
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| 1971 | RpUnits* psi = RpUnits::define("psi", NULL, RP_TYPE_PRESSURE); |
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| 1972 | RpUnits* torr = RpUnits::define("torr", NULL, RP_TYPE_PRESSURE); |
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| 1973 | RpUnits* mmHg = RpUnits::define("mmHg", torr, RP_TYPE_PRESSURE); |
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| 1974 | |
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| 1975 | RpUnits::makeMetric(pascal); |
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| 1976 | RpUnits::makeMetric(bar); |
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| 1977 | |
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| 1978 | RpUnits::define(bar,pascal,bar2Pa,Pa2bar); |
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| 1979 | RpUnits::define(bar,atmosphere,bar2atm,atm2bar); |
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| 1980 | RpUnits::define(bar,psi,bar2psi,psi2bar); |
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| 1981 | RpUnits::define(bar,torr,bar2torr,torr2bar); |
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| 1982 | RpUnits::define(pascal,atmosphere,Pa2atm,atm2Pa); |
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| 1983 | RpUnits::define(pascal,torr,Pa2torr,torr2Pa); |
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| 1984 | RpUnits::define(pascal,psi,Pa2psi,psi2Pa); |
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| 1985 | RpUnits::define(torr,atmosphere,torr2atm,atm2torr); |
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| 1986 | RpUnits::define(torr,psi,torr2psi,psi2torr); |
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| 1987 | |
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| 1988 | RpUnits::define(torr,mmHg,torr2mmHg,mmHg2torr); |
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| 1989 | |
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| 1990 | return 0; |
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| 1991 | } |
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| 1992 | |
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| 1993 | /**********************************************************************/ |
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[388] | 1994 | // METHOD: addPresetMisc() |
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| 1995 | /// Add Misc related units to the dictionary |
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| 1996 | /** |
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| 1997 | * Defines the following units: |
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| 1998 | * mole (mol) |
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| 1999 | * |
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| 2000 | * Return codes: 0 success, anything else is error |
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| 2001 | */ |
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| 2002 | |
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| 2003 | int |
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| 2004 | RpUnitsPreset::addPresetMisc () { |
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| 2005 | |
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| 2006 | RpUnits* mole = RpUnits::define("mol", NULL, RP_TYPE_MISC); |
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[487] | 2007 | RpUnits* hertz = RpUnits::define("Hz", NULL, RP_TYPE_MISC); |
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| 2008 | RpUnits* becquerel = RpUnits::define("Bq", NULL, RP_TYPE_MISC); |
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[388] | 2009 | |
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| 2010 | RpUnits::makeMetric(mole); |
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[487] | 2011 | RpUnits::makeMetric(hertz); |
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| 2012 | RpUnits::makeMetric(becquerel); |
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[388] | 2013 | |
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| 2014 | // add misc definitions |
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| 2015 | // RpUnits::define(radian,gradian,rad2grad,grad2rad); |
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| 2016 | |
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| 2017 | return 0; |
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| 2018 | } |
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| 2019 | |
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[20] | 2020 | // -------------------------------------------------------------------- // |
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| 2021 | |
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