| 1 | /* |
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| 2 | * ---------------------------------------------------------------------- |
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| 3 | * INTERFACE: Octave Rappture Library Source |
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| 4 | * |
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| 5 | * [unitHandle,err] = rpUnitsFind(unitSymbol) |
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| 6 | * |
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| 7 | * ====================================================================== |
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| 8 | * AUTHOR: Derrick Kearney, Purdue University |
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| 9 | * Copyright (c) 2005 |
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| 10 | * Purdue Research Foundation, West Lafayette, IN |
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| 11 | * ====================================================================== |
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| 12 | */ |
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| 13 | |
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| 14 | #include "RpOctaveInterface.h" |
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| 15 | |
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| 16 | /**********************************************************************/ |
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| 17 | // METHOD: [unitHandle,err] = rpUnitsFind(unitSymbol) |
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| 18 | /// Search the dictionary of Rappture Units for an instance named 'unitSymbol' |
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| 19 | /** |
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| 20 | * This method searches the Rappture Units Dictionary for the |
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| 21 | * RpUnit named 'unitSymbol'. If it is found, its handle is |
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| 22 | * returned, as a non-negative integer, to the caller for further use, |
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| 23 | * else a negative integer is returned signifying no unit of that |
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| 24 | * name was found. |
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| 25 | * If unitSymbol is an empty string, unitHandle will be set to zero and err |
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| 26 | * will be set to a positive value. |
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| 27 | * Error code, err=0 on success, anything else is failure. |
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| 28 | */ |
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| 29 | |
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| 30 | DEFUN_DLD (rpUnitsFind, args, , |
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| 31 | "-*- texinfo -*-\n\ |
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| 32 | [unitHandle,err] = rpUnitsFind(@var{unitSymbol})\n\ |
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| 33 | \n\ |
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| 34 | This method searches the Rappture Units Dictionary for the\n\ |
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| 35 | RpUnit named @var{unitSymbol}. If it is found, its handle is \n\ |
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| 36 | returned, as a non-negative integer, to the caller for further use,\n\ |
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| 37 | else a negative integer is returned signifying no unit of that \n\ |
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| 38 | name was found.\n\ |
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| 39 | If @var{unitSymbol} is an empty string, @var{unitHandle} will be set to\n\ |
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| 40 | zero and @var{err} will be set to a positive value.\n\ |
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| 41 | Error code, err=0 on success, anything else is failure.") |
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| 42 | { |
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| 43 | static std::string who = "rpUnitsFind"; |
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| 44 | |
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| 45 | // The list of values to return. |
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| 46 | octave_value_list retval; |
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| 47 | int err = 1; |
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| 48 | int nargin = args.length (); |
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| 49 | std::string unitSymbol = ""; |
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| 50 | int retHandle = -1; |
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| 51 | const RpUnits* retUnit = NULL; |
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| 52 | |
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| 53 | if (nargin == 1) { |
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| 54 | |
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| 55 | if ( args(0).is_string() ) { |
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| 56 | |
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| 57 | unitSymbol = args(0).string_value (); |
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| 58 | |
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| 59 | /* Call the C subroutine. */ |
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| 60 | if ( !unitSymbol.empty() ) { |
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| 61 | |
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| 62 | retUnit = RpUnits::find(unitSymbol); |
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| 63 | // store the returned unit |
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| 64 | if (retUnit) { |
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| 65 | // store the unit |
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| 66 | retHandle = storeObject_UnitsStr(retUnit->getUnitsName()); |
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| 67 | // adjust error code |
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| 68 | if (retHandle >= 0) { |
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| 69 | err = 0; |
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| 70 | } |
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| 71 | } |
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| 72 | } |
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| 73 | else { |
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| 74 | _PRINT_USAGE (who.c_str()); |
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| 75 | } |
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| 76 | } |
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| 77 | else { |
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| 78 | _PRINT_USAGE (who.c_str()); |
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| 79 | } |
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| 80 | } |
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| 81 | else { |
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| 82 | _PRINT_USAGE (who.c_str()); |
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| 83 | } |
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| 84 | |
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| 85 | retval(0) = retHandle; |
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| 86 | retval(1) = err; |
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| 87 | return retval; |
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| 88 | } |
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