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harbour-core/harbour/source/tools/nconvert.prg
2000-02-29 21:12:27 +00:00

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/*
* $Id$
*/
/*
* Harbour Project source code:
* Conversion Funtions
*
* Copyright 1999 Luiz Rafael Culik <Culik@sl.conex.net>
* www - http://www.harbour-project.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version, with one exception:
*
* The exception is that if you link the Harbour Runtime Library (HRL)
* and/or the Harbour Virtual Machine (HVM) with other files to produce
* an executable, this does not by itself cause the resulting executable
* to be covered by the GNU General Public License. Your use of that
* executable is in no way restricted on account of linking the HRL
* and/or HVM code into it.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
* their web site at http://www.gnu.org/).
*
*/
FUNCTION IsBin(cString)
local nX,lFlag:=.t.
cString:=AllTrim(cString)
FOR nX:=1 to Len(cString)
IF !(SubStr(cString,nX,1) $"01")
lFlag:=.F.
EXIT
ENDIF
NEXT nX
RETURN(lFlag)
FUNCTION IsOctal(cString)
local nX,lFlag:=.t.
cString:=AllTrim(cString)
FOR nX:=1 to Len(cString)
if !(SubStr(cString,nX,1) $"01234567")
lFlag:=.f.
EXIT
ENDIF
NEXT nX
RETURN(lFlag)
FUNCTION IsDec(cString)
local nX,lFlag:=.t.
cString:=AllTrim(cString)
FOR nX:=1 to Len(cString)
if !(SubStr(cString,nX,1) $"0123456789")
lFlag:=.f.
EXIT
ENDIF
NEXT nX
RETURN(lFlag)
FUNCTION IsHexa(cString)
local nX,lFlag:=.t.
cString:=AllTrim(cString)
FOR nX:=1 to Len(cString)
if !(SubStr(cString,nX,1) $"0123456789ABCDEF")
lFlag:=.f.
EXIT
ENDIF
NEXT nX
RETURN(lFlag)
FUNCTION DecToBin(nNumber)
local cNewString:=''
local nTemp:=0
WHILE(nNumber > 0)
nTemp:=(nNumber%2)
cNewString:=SubStr('01',(nTemp+1),1)+cNewString
nNumber:=Int((nNumber-nTemp)/2)
ENDDO
RETURN(cNewString)
FUNCTION DecToOctal(nNumber)
local cNewString:=''
local nTemp:=0
WHILE(nNumber > 0)
nTemp:=(nNumber%8)
cNewString:=SubStr('01234567',(nTemp+1),1)+cNewString
nNumber:=Int((nNumber-nTemp)/8)
ENDDO
RETURN(cNewString)
FUNCTION DecToHexa(nNumber)
local cNewString:=''
local nTemp:=0
WHILE(nNumber > 0)
nTemp:=(nNumber%16)
cNewString:=SubStr('0123456789ABCDEF',(nTemp+1),1)+cNewString
nNumber:=Int((nNumber-nTemp)/16)
ENDDO
RETURN(cNewString)
FUNCTION BinToDec(cString)
local nNumber:=0,nX:=0
local cNewString:=AllTrim(cString)
local nLen:=Len(cNewString)
FOR nX:=1 to nLen
nNumber+=(At(SubStr(cNewString,nX,1),'01')-1)*;
(2**(nLen-nX))
NEXT nX
RETURN(nNumber)
FUNCTION OctalToDec(cString)
local nNumber:=0,nX:=0
local cNewString:=AllTrim(cString)
local nLen:=Len(cNewString)
FOR nX:=1 to nLen
nNumber+=(At(SubStr(cNewString,nX,1),'01234567')-1)*;
(8**(nLen-nX))
NEXT nX
RETURN(nNumber)
FUNCTION HexaToDec(cString)
local nNumber:=0,nX:=0
local cNewString:=AllTrim(cString)
local nLen:=Len(cNewString)
FOR nX:=1 to nLen
nNumber+=(At(SubStr(cNewString,nX,1),'0123456789ABCDEF')-1)*;
(16**(nLen-nX))
NEXT nX
RETURN nNumber