1 | /* |
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2 | * ---------------------------------------------------------------------- |
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3 | * INTERFACE: R Rappture Units Source |
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4 | * |
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5 | * ====================================================================== |
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6 | * AUTHOR: Derrick Kearney, Purdue University |
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7 | * Copyright (c) 2004-2012 HUBzero Foundation, LLC |
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8 | * |
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9 | * See the file "license.terms" for information on usage and |
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10 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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11 | * ====================================================================== |
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12 | */ |
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13 | |
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14 | #include "RpUnits.h" |
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15 | #include "RpBindingsDict.h" |
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16 | |
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17 | # include "RpUnitsRInterface.h" |
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18 | |
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19 | #ifdef __cplusplus |
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20 | extern "C" { |
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21 | #endif |
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22 | |
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23 | /**********************************************************************/ |
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24 | // FUNCTION: RPRUnitsConvertDouble(fromVal,toUnitsName) |
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25 | /// Perform units convertion on fromVal, return a double |
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26 | /** |
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27 | */ |
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28 | |
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29 | SEXP |
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30 | RPRUnitsConvertDouble( |
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31 | SEXP fromVal, |
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32 | SEXP toUnitsName) |
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33 | { |
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34 | SEXP ans; |
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35 | std::string convStr = ""; |
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36 | int showUnitsFlag = 0; |
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37 | double convResult = 0.0; |
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38 | int err = 0; |
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39 | |
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40 | ans = allocVector(REALSXP,1); |
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41 | PROTECT(ans); |
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42 | |
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43 | REAL(ans)[0] = 0.0; |
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44 | |
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45 | if (!isString(fromVal) || length(fromVal) != 1) { |
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46 | error("fromVal is not a string"); |
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47 | UNPROTECT(1); |
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48 | return ans; |
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49 | } |
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50 | |
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51 | if (!isString(toUnitsName) || length(toUnitsName) != 1) { |
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52 | error("toUnitsName is not a string"); |
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53 | UNPROTECT(1); |
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54 | return ans; |
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55 | } |
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56 | |
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57 | // the call to RpUnits::convert() populates the result flag |
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58 | convStr = RpUnits::convert(CHAR(STRING_ELT(fromVal,0)), |
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59 | CHAR(STRING_ELT(toUnitsName,0)), |
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60 | showUnitsFlag, |
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61 | &err); |
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62 | |
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63 | if (err) { |
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64 | error("unrecognized unit conversion"); |
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65 | UNPROTECT(1); |
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66 | return ans; |
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67 | } |
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68 | |
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69 | REAL(ans)[0] = atof(convStr.c_str()); |
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70 | |
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71 | UNPROTECT(1); |
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72 | |
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73 | return ans; |
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74 | } |
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75 | |
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76 | |
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77 | /**********************************************************************/ |
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78 | // FUNCTION: RPRUnitsConvertString(fromVal,toUnitsName,showUnits) |
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79 | /// Perform units convertion on fromVal, return a string |
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80 | /** |
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81 | */ |
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82 | |
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83 | SEXP |
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84 | RPRUnitsConvertString( |
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85 | SEXP fromVal, |
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86 | SEXP toUnitsName, |
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87 | SEXP showUnits) |
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88 | { |
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89 | SEXP ans; |
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90 | std::string convStr = ""; |
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91 | int showUnitsFlag = 1; |
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92 | double convResult = 0.0; |
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93 | int err = 0; |
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94 | |
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95 | ans = allocVector(STRSXP,1); |
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96 | PROTECT(ans); |
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97 | |
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98 | SET_STRING_ELT(ans,0,mkChar("")); |
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99 | |
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100 | if (!isString(fromVal) || length(fromVal) != 1) { |
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101 | error("fromVal is not a string"); |
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102 | UNPROTECT(1); |
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103 | return ans; |
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104 | } |
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105 | |
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106 | if (!isString(toUnitsName) || length(toUnitsName) != 1) { |
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107 | error("toUnitsName is not a string"); |
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108 | UNPROTECT(1); |
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109 | return ans; |
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110 | } |
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111 | |
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112 | if (!isLogical(showUnits) || length(showUnits) != 1) { |
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113 | error("showUnits is not a logical"); |
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114 | UNPROTECT(1); |
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115 | return ans; |
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116 | } |
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117 | |
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118 | showUnitsFlag = asLogical(showUnits); |
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119 | if (showUnitsFlag == 1) { |
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120 | showUnitsFlag = RPUNITS_UNITS_ON; |
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121 | } else { |
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122 | showUnitsFlag = RPUNITS_UNITS_OFF; |
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123 | } |
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124 | |
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125 | // the call to RpUnits::convert() populates the result flag |
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126 | convStr = RpUnits::convert(CHAR(STRING_ELT(fromVal,0)), |
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127 | CHAR(STRING_ELT(toUnitsName,0)), |
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128 | showUnitsFlag, |
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129 | &err); |
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130 | |
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131 | if (err) { |
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132 | error("unrecognized unit conversion"); |
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133 | UNPROTECT(1); |
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134 | return ans; |
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135 | } |
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136 | |
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137 | SET_STRING_ELT(ans,0,mkChar(convStr.c_str())); |
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138 | |
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139 | UNPROTECT(1); |
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140 | |
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141 | return ans; |
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142 | } |
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143 | |
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144 | #ifdef __cplusplus |
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145 | } |
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146 | #endif // ifdef __cplusplus |
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147 | |
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