1 | /* |
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2 | * ---------------------------------------------------------------------- |
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3 | * Rappture::units |
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4 | * |
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5 | * This is an interface to the rappture units module. |
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6 | * It allows you to convert between units and format values. |
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7 | * ====================================================================== |
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8 | * AUTHOR: Derrick Kearney, Purdue University |
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9 | * Copyright (c) 2004-2006 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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13 | * ====================================================================== |
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14 | */ |
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15 | #include <tcl.h> |
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16 | #include "core/RpUnits.h" |
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17 | #include "RpUnitsTclInterface.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 | // EXTERN int Rapptureunits_Init _ANSI_ARGS_((Tcl_Interp * interp)); |
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24 | |
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25 | static int RpTclUnitsConvert _ANSI_ARGS_(( ClientData cdata, |
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26 | Tcl_Interp *interp, |
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27 | int argc, |
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28 | const char *argv[] )); |
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29 | |
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30 | static int RpTclUnitsDesc _ANSI_ARGS_(( ClientData cdata, |
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31 | Tcl_Interp *interp, |
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32 | int argc, |
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33 | const char *argv[] )); |
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34 | |
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35 | static int RpTclUnitsSysFor _ANSI_ARGS_(( ClientData cdata, |
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36 | Tcl_Interp *interp, |
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37 | int argc, |
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38 | const char *argv[] )); |
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39 | |
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40 | static int RpTclUnitsSysAll _ANSI_ARGS_(( ClientData cdata, |
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41 | Tcl_Interp *interp, |
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42 | int argc, |
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43 | const char *argv[] )); |
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44 | |
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45 | #ifdef __cplusplus |
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46 | } |
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47 | #endif |
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48 | |
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49 | /* |
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50 | * ------------------------------------------------------------------------ |
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51 | * Rapptureunits_Init() |
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52 | * |
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53 | * Called in RapptureGUI_Init() to initialize the commands defined |
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54 | * in this file. |
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55 | * ------------------------------------------------------------------------ |
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56 | */ |
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57 | |
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58 | int |
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59 | Rapptureunits_Init(Tcl_Interp *interp) |
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60 | { |
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61 | |
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62 | Tcl_CreateCommand(interp, "::Rappture::Units::convert", |
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63 | RpTclUnitsConvert, (ClientData)NULL, (Tcl_CmdDeleteProc*)NULL); |
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64 | |
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65 | Tcl_CreateCommand(interp, "::Rappture::Units::description", |
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66 | RpTclUnitsDesc, (ClientData)NULL, (Tcl_CmdDeleteProc*)NULL); |
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67 | |
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68 | Tcl_CreateCommand(interp, "::Rappture::Units::System::for", |
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69 | RpTclUnitsSysFor, (ClientData)NULL, (Tcl_CmdDeleteProc*)NULL); |
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70 | |
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71 | Tcl_CreateCommand(interp, "::Rappture::Units::System::all", |
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72 | RpTclUnitsSysAll, (ClientData)NULL, (Tcl_CmdDeleteProc*)NULL); |
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73 | |
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74 | return TCL_OK; |
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75 | } |
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76 | |
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77 | int |
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78 | RpTclUnitsConvert ( ClientData cdata, |
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79 | Tcl_Interp *interp, |
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80 | int argc, |
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81 | const char *argv[] ) |
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82 | { |
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83 | std::string inValue = ""; // value provided by the user |
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84 | std::string fromUnitsName = ""; // name of the units for user's value |
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85 | std::string toUnitsName = ""; // name of the units to convert to |
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86 | std::string option = ""; // tmp var for parsing command line options |
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87 | std::string val = ""; // inValue + fromUnitsName as one string |
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88 | std::string convertedVal = ""; // result of conversion |
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89 | int showUnits = 0; // flag if we should show units in result |
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90 | int result = 0; // flag if the conversion was successful |
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91 | |
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92 | int nextarg = 1; // start parsing using the '2'th argument |
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93 | int argsLeft = 0; // temp variable for calculation |
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94 | int retVal = 0; // TCL_OK or TCL_ERROR depending on result val |
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95 | char *endptr = NULL; |
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96 | |
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97 | Tcl_ResetResult(interp); |
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98 | |
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99 | // parse through command line options |
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100 | if (argc < 2) { |
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101 | Tcl_AppendResult(interp, |
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102 | "usage: ", argv[0], |
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103 | " <value> ?-context units? ?-to units? ?-units on/off?", |
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104 | (char*)NULL); |
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105 | return TCL_ERROR; |
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106 | } |
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107 | |
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108 | inValue = std::string(argv[nextarg++]); |
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109 | |
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110 | argsLeft = (argc-nextarg); |
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111 | while (argsLeft > 0 ) { |
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112 | if (*argv[nextarg] == '-') { |
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113 | option = std::string(argv[nextarg]); |
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114 | |
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115 | if ( option == "-context" ) { |
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116 | nextarg++; |
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117 | fromUnitsName = std::string(argv[nextarg]); |
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118 | if (RpUnits::find(fromUnitsName) == NULL) { |
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119 | Tcl_AppendResult(interp, |
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120 | "-context value \"", fromUnitsName.c_str(), |
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121 | "\" is not a recognized unit for rappture", |
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122 | (char*)NULL); |
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123 | return TCL_ERROR; |
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124 | } |
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125 | |
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126 | } |
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127 | else if ( option == "-to" ) { |
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128 | nextarg++; |
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129 | toUnitsName = std::string(argv[nextarg]); |
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130 | if (RpUnits::find(toUnitsName) == NULL) { |
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131 | Tcl_AppendResult(interp, |
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132 | "-to value \"", toUnitsName.c_str(), |
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133 | "\" is not a recognized unit for rappture", |
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134 | (char*)NULL); |
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135 | return TCL_ERROR; |
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136 | } |
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137 | } |
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138 | else if ( option == "-units" ) { |
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139 | nextarg++; |
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140 | if ( (*(argv[nextarg]+1) == 'n') |
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141 | && (std::string(argv[nextarg]) == "on") ) { |
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142 | showUnits = 1; |
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143 | } |
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144 | else if ( (*(argv[nextarg]+1) == 'f') |
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145 | && (std::string(argv[nextarg]) == "off") ) { |
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146 | showUnits = 0; |
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147 | } |
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148 | else { |
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149 | // unrecognized value for -units option |
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150 | Tcl_AppendResult(interp, |
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151 | "value for -units must be \"on\" or \"off\"", |
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152 | (char*)NULL); |
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153 | return TCL_ERROR; |
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154 | } |
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155 | } |
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156 | else { |
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157 | // unrecognized option |
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158 | Tcl_AppendResult(interp, "invalid option: ", option.c_str(), |
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159 | ".\nusage: ", argv[0], |
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160 | " <value> ?-context units? ?-to units? ?-units on/off?", |
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161 | (char*)NULL); |
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162 | return TCL_ERROR; |
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163 | } |
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164 | |
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165 | nextarg++; |
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166 | } |
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167 | else { |
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168 | // unrecognized input |
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169 | Tcl_AppendResult(interp, "invalid input: ", argv[nextarg], |
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170 | ".\nusage: ", argv[0], |
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171 | " <value> ?-context units? ?-to units? ?-units on/off?", |
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172 | (char*)NULL); |
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173 | return TCL_ERROR; |
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174 | |
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175 | } |
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176 | |
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177 | argsLeft = (argc-nextarg); |
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178 | } |
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179 | |
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180 | // check the inValue to see if it has units |
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181 | // or if we should use those provided in -context option |
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182 | strtod(inValue.c_str(),&endptr); |
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183 | if ( ((unsigned)(endptr - inValue.c_str())) == inValue.length() ) { |
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184 | // there were no units at the end of the inValue string |
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185 | // rappture units convert expects the val variable to be |
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186 | // the quantity and units in one string |
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187 | val = inValue + fromUnitsName; |
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188 | } |
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189 | else { |
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190 | // there seemed to be units at the end of the inValue string |
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191 | // we will ignore the -context flag and use the units in inValue |
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192 | val = inValue; |
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193 | } |
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194 | |
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195 | // call the rappture units convert function |
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196 | convertedVal = RpUnits::convert(val, toUnitsName, showUnits, &result); |
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197 | |
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198 | if ( (!convertedVal.empty()) && (result == 0) ) { |
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199 | // store the new result in the interpreter |
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200 | Tcl_AppendResult(interp, convertedVal.c_str(), (char*)NULL); |
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201 | retVal = TCL_OK; |
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202 | } |
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203 | else { |
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204 | // error while converting |
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205 | Tcl_AppendResult(interp, |
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206 | "There was an error while converting\n" |
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207 | "The convert function returned the following string: \"", |
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208 | convertedVal.c_str(),"\"", |
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209 | (char*)NULL); |
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210 | retVal = TCL_ERROR; |
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211 | } |
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212 | |
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213 | return retVal; |
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214 | } |
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215 | |
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216 | int |
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217 | RpTclUnitsDesc ( ClientData cdata, |
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218 | Tcl_Interp *interp, |
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219 | int argc, |
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220 | const char *argv[] ) |
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221 | { |
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222 | std::string unitsName = ""; // name of the units provided by user |
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223 | std::string type = ""; // name of the units provided by user |
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224 | std::string listStr = ""; // name of the units provided by user |
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225 | const RpUnits* unitsObj = NULL; |
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226 | std::list<std::string> compatList; |
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227 | std::list<std::string>::iterator compatListIter; |
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228 | |
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229 | int nextarg = 1; // start parsing using the '2'th argument |
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230 | |
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231 | Tcl_ResetResult(interp); |
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232 | |
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233 | // parse through command line options |
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234 | if (argc != 2) { |
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235 | Tcl_AppendResult(interp, "usage: ", argv[0], " <units>", (char*)NULL); |
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236 | return TCL_ERROR; |
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237 | } |
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238 | |
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239 | unitsName = std::string(argv[nextarg]); |
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240 | |
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241 | unitsObj = RpUnits::find(unitsName); |
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242 | if (unitsObj == NULL) { |
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243 | Tcl_AppendResult(interp, |
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244 | "The units named: \"", unitsName.c_str(), |
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245 | "\" is not a recognized unit for rappture", |
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246 | (char*)NULL); |
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247 | return TCL_ERROR; |
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248 | } |
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249 | |
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250 | type = unitsObj->getType(); |
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251 | |
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252 | Tcl_AppendResult(interp, type.c_str(), (char*)NULL); |
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253 | |
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254 | compatList = unitsObj->getCompatible(); |
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255 | compatListIter = compatList.begin(); |
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256 | |
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257 | while (compatListIter != compatList.end()) { |
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258 | if ( listStr.empty() ) { |
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259 | listStr = *compatListIter; |
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260 | } |
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261 | else { |
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262 | listStr = listStr + "," + *compatListIter; |
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263 | } |
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264 | |
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265 | // increment the iterator |
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266 | compatListIter++; |
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267 | } |
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268 | |
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269 | Tcl_AppendResult(interp, " (", listStr.c_str() ,")", (char*)NULL); |
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270 | |
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271 | return TCL_OK; |
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272 | } |
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273 | |
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274 | int |
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275 | RpTclUnitsSysFor ( ClientData cdata, |
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276 | Tcl_Interp *interp, |
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277 | int argc, |
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278 | const char *argv[] ) |
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279 | { |
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280 | std::string unitsName = ""; // name of the units provided by user |
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281 | std::string type = ""; // name of the units provided by user |
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282 | const RpUnits* unitsObj = NULL; |
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283 | int nextarg = 1; // start parsing using the '2'th argument |
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284 | |
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285 | Tcl_ResetResult(interp); |
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286 | |
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287 | // parse through command line options |
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288 | if (argc != 2) { |
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289 | Tcl_AppendResult(interp, "usage: ", argv[0], " <units>", (char*)NULL); |
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290 | return TCL_ERROR; |
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291 | } |
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292 | |
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293 | unitsName = std::string(argv[nextarg]); |
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294 | |
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295 | unitsObj = RpUnits::find(unitsName); |
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296 | if (unitsObj == NULL) { |
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297 | Tcl_AppendResult(interp, |
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298 | "The units named: \"", unitsName.c_str(), |
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299 | "\" is not a recognized unit for rappture", |
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300 | (char*)NULL); |
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301 | return TCL_ERROR; |
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302 | } |
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303 | |
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304 | type = unitsObj->getType(); |
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305 | |
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306 | Tcl_AppendResult(interp, type.c_str(), (char*)NULL); |
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307 | return TCL_OK; |
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308 | |
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309 | } |
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310 | |
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311 | int |
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312 | RpTclUnitsSysAll ( ClientData cdata, |
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313 | Tcl_Interp *interp, |
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314 | int argc, |
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315 | const char *argv[] ) |
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316 | { |
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317 | std::string unitsName = ""; // name of the units provided by user |
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318 | const RpUnits* unitsObj = NULL; |
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319 | std::list<std::string> compatList; |
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320 | std::list<std::string>::iterator compatListIter; |
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321 | int nextarg = 1; // start parsing using the '2'th argument |
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322 | |
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323 | Tcl_ResetResult(interp); |
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324 | |
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325 | // parse through command line options |
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326 | if (argc != 2) { |
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327 | Tcl_AppendResult(interp, "usage: ", argv[0], " <units>", (char*)NULL); |
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328 | return TCL_ERROR; |
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329 | } |
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330 | |
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331 | unitsName = std::string(argv[nextarg]); |
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332 | |
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333 | unitsObj = RpUnits::find(unitsName); |
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334 | if (unitsObj == NULL) { |
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335 | Tcl_AppendResult(interp, |
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336 | "The units named: \"", unitsName.c_str(), |
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337 | "\" is not a recognized unit for rappture", |
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338 | (char*)NULL); |
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339 | return TCL_ERROR; |
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340 | } |
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341 | |
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342 | compatList = unitsObj->getCompatible(); |
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343 | compatListIter = compatList.begin(); |
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344 | |
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345 | while (compatListIter != compatList.end()) { |
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346 | Tcl_AppendElement(interp,(*compatListIter).c_str()); |
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347 | // increment the iterator |
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348 | compatListIter++; |
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349 | } |
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350 | |
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351 | return TCL_OK; |
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352 | } |
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