131 lines
4.2 KiB
Plaintext
131 lines
4.2 KiB
Plaintext
/*
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* Harbour Project source code:
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* Calling function from dynamic library (fox___DynCall())
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*
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* Copyright 2010 Viktor Szakats (vszakats.net/harbour)
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* www - http://harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING.txt. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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#include "hbdyn.ch"
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/*
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DECLARE [cFunctionType] FunctionName IN LibraryName [AS AliasName]
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[cParamType1 [@] ParamName1, cParamType2 [@] ParamName2, ...]
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*/
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FUNCTION fox___DynCall( cCommand, ... )
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LOCAL aParam
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LOCAL cFunction
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LOCAL cLibrary
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LOCAL nFuncFlags := hb_bitOr( HB_DYN_CALLCONV_CDECL, HB_DYN_ENC_RAW )
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LOCAL aCommand := hb_ATokens( cCommand )
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LOCAL nPos := 1
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LOCAL aType := { ;
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"SHORT" => HB_DYN_CTYPE_SHORT, ;
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"INTEGER" => HB_DYN_CTYPE_INT, ;
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"SINGLE" => HB_DYN_CTYPE_FLOAT, ;
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"DOUBLE" => HB_DYN_CTYPE_DOUBLE, ;
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"LONG" => HB_DYN_CTYPE_LONG, ;
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"STRING" => HB_DYN_CTYPE_CHAR_PTR, ;
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"OBJECT" => HB_DYN_CTYPE_VOID_PTR }
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IF nPos <= Len( aCommand ) .AND. Upper( aCommand[ nPos ] ) == "DECLARE"
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++nPos
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ENDIF
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IF nPos <= Len( aCommand ) .AND. Upper( aCommand[ nPos ] ) $ aType
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nFuncFlags := hb_bitOr( nFuncFlags, aType[ Upper( aCommand[ nPos ] ) ] )
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++nPos
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ELSE
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RETURN NIL
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ENDIF
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IF nPos <= Len( aCommand )
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cFunction := aCommand[ nPos ]
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++nPos
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ELSE
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RETURN NIL
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ENDIF
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IF nPos <= Len( aCommand ) .AND. Upper( aCommand[ nPos ] ) == "IN"
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++nPos
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ELSE
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RETURN NIL
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ENDIF
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IF nPos <= Len( aCommand )
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cLibrary := aCommand[ nPos ]
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++nPos
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ELSE
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RETURN NIL
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ENDIF
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IF nPos <= Len( aCommand ) .AND. Upper( aCommand[ nPos ] ) == "AS"
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nPos += 2
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ENDIF
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aParam := { cFunction, cLibrary, nFuncFlags }
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DO WHILE nPos <= Len( aCommand )
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IF Upper( Upper( aCommand[ nPos ] ) ) $ aType
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AAdd( aParam, hb_bitOr( HB_DYN_ENC_RAW, aType[ Upper( aCommand[ nPos ] ) ] ) )
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++nPos
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ENDIF
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IF nPos <= Len( aCommand ) .AND. aCommand[ nPos ] == "@"
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++nPos
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ENDIF
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/* ignore parameter name */
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IF nPos <= Len( aCommand )
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++nPos
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ENDIF
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IF nPos <= Len( aCommand ) .AND. aCommand[ nPos ] == ","
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++nPos
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ENDIF
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ENDDO
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RETURN hb_DynCall( aParam, ... )
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