108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* LEN() function
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*
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* Copyright 1999 {list of individual authors and e-mail addresses}
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* www - http://www.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 of the License, or
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* (at your option) any later version, with one exception:
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*
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* The exception is that if you link the Harbour Runtime Library (HRL)
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* and/or the Harbour Virtual Machine (HVM) with other files to produce
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* an executable, this does not by itself cause the resulting executable
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* to be covered by the GNU General Public License. Your use of that
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* executable is in no way restricted on account of linking the HRL
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* and/or HVM code into it.
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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 program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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* their web site at http://www.gnu.org/).
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*
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*/
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#include "extend.h"
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#include "errorapi.h"
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#include "itemapi.h"
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/* $DOC$
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* $FUNCNAME$
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* LEN
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* $CATEGORY$
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*
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* $ONELINER$
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* Returns size of a string or size of an array.
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* $SYNTAX$
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* LEN( <cString> | <aArray> ) --> <nLength>
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* $ARGUMENTS$
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* <acString> is a character string or the array to check.
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* $RETURNS$
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* The length of the string or the number of elements that contains
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* an array.
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* $DESCRIPTION$
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* This function returns the string length or the size of an array. If
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* it is used with a multidimensional array it returns the size of the
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* first dimension.
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* $EXAMPLES$
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* ? Len( "Harbour" ) --> 7
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* ? Len( { "One", "Two" } ) --> 2
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* $TESTS$
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* function Test()
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* LOCAL cName := ""
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* ACCEPT "Enter your name: " TO cName
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* ? Len( cName )
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* return nil
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* $STATUS$
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* R
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* $COMPLIANCE$
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* LEN() is fully CA-Clipper compliant.
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* $SEEALSO$
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* EMPTY, RTRIM, LTRIM, AADD, ASIZE
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* $END$
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*/
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HARBOUR HB_LEN( void )
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{
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PHB_ITEM pItem = hb_param( 1, IT_ANY );
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/* NOTE: Double safety to ensure that a parameter was really passed,
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compiler checks this, but a direct hb_vmDo() call
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may not do so. [vszel] */
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if( pItem )
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{
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if( IS_STRING( pItem ) )
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{
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hb_retnl( hb_itemGetCLen( pItem ) );
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return;
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}
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else if( IS_ARRAY( pItem ) )
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{
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hb_retnl( hb_arrayLen( pItem ) );
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return;
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}
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}
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{
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PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1111, NULL, "LEN" );
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if( pResult )
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{
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hb_itemReturn( pResult );
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hb_itemRelease( pResult );
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}
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}
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}
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