| 1 | /* |
|---|
| 2 | * ---------------------------------------------------------------------- |
|---|
| 3 | * INTERFACE: Octave Rappture Library Source |
|---|
| 4 | * |
|---|
| 5 | * [retStr,err] = rpUnitsConvertStr(fromVal, toUnitsName, showUnits) |
|---|
| 6 | * |
|---|
| 7 | * ====================================================================== |
|---|
| 8 | * AUTHOR: Derrick Kearney, Purdue University |
|---|
| 9 | * Copyright (c) 2005 |
|---|
| 10 | * Purdue Research Foundation, West Lafayette, IN |
|---|
| 11 | * ====================================================================== |
|---|
| 12 | */ |
|---|
| 13 | |
|---|
| 14 | #include "RpOctaveInterface.h" |
|---|
| 15 | |
|---|
| 16 | /**********************************************************************/ |
|---|
| 17 | // METHOD: [retStr,err] = rpUnitsConvertStr(fromVal,toUnitsName,showUnits) |
|---|
| 18 | /// Convert between RpUnits return a string value with or without units |
|---|
| 19 | /** |
|---|
| 20 | * Convert the value and units in the string @var{fromVal} to units specified |
|---|
| 21 | * in string @var{toUnitsName}. If @var{showUnits} is set to 1, then show the |
|---|
| 22 | * units in the returned string @var{retStr}, else leave the units off. |
|---|
| 23 | * The second return value @var{err} specifies whether there was an error |
|---|
| 24 | * during conversion. |
|---|
| 25 | * Error code, err=0 on success, anything else is failure. |
|---|
| 26 | */ |
|---|
| 27 | |
|---|
| 28 | DEFUN_DLD (rpUnitsConvertStr, args, , |
|---|
| 29 | "-*- texinfo -*-\n\ |
|---|
| 30 | [retStr,result] = rpUnitsConvertStr(@var{fromVal},@var{toUnitsName},@var{showUnits})\n\ |
|---|
| 31 | \n\ |
|---|
| 32 | Convert the value and units in the string @var{fromVal} to units specified\n\ |
|---|
| 33 | in string @var{toUnitsName}. If @var{showUnits} is set to 1, then show the\n\ |
|---|
| 34 | units in the returned string @var{retStr}, else leave the units off.\n\ |
|---|
| 35 | The second return value @var{err} specifies whether there was an error\n\ |
|---|
| 36 | during conversion. \n\ |
|---|
| 37 | Error code, err=0 on success, anything else is failure.") |
|---|
| 38 | { |
|---|
| 39 | static std::string who = "rpUnitsConvertStr"; |
|---|
| 40 | |
|---|
| 41 | // The list of values to return. |
|---|
| 42 | octave_value_list retval; |
|---|
| 43 | int err = 1; |
|---|
| 44 | int nargin = args.length (); |
|---|
| 45 | std::string fromVal = ""; |
|---|
| 46 | std::string toUnitsName = ""; |
|---|
| 47 | int showUnits = 0; |
|---|
| 48 | std::string retStr = ""; |
|---|
| 49 | |
|---|
| 50 | if (nargin == 3) { |
|---|
| 51 | |
|---|
| 52 | if ( args(0).is_string () && |
|---|
| 53 | args(1).is_string () && |
|---|
| 54 | args(2).is_real_scalar () ) { |
|---|
| 55 | |
|---|
| 56 | fromVal = args(0).string_value (); |
|---|
| 57 | toUnitsName = args(1).string_value (); |
|---|
| 58 | showUnits = args(2).int_value (); |
|---|
| 59 | |
|---|
| 60 | // Call the C++ subroutine. |
|---|
| 61 | // we allow toUnitsName to be an empty string |
|---|
| 62 | // to let the user not change the units of fromVal |
|---|
| 63 | // but still remove the units from being shown. |
|---|
| 64 | if ( !fromVal.empty() ) { |
|---|
| 65 | |
|---|
| 66 | retStr = RpUnits::convert(fromVal,toUnitsName,showUnits,&err); |
|---|
| 67 | } |
|---|
| 68 | else { |
|---|
| 69 | _PRINT_USAGE (who.c_str()); |
|---|
| 70 | } |
|---|
| 71 | } |
|---|
| 72 | else { |
|---|
| 73 | _PRINT_USAGE (who.c_str()); |
|---|
| 74 | } |
|---|
| 75 | } |
|---|
| 76 | else { |
|---|
| 77 | _PRINT_USAGE (who.c_str()); |
|---|
| 78 | } |
|---|
| 79 | |
|---|
| 80 | retval(0) = retStr; |
|---|
| 81 | retval(1) = err; |
|---|
| 82 | return retval; |
|---|
| 83 | } |
|---|
