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/**********************************************************************
** Copyright (C) 2000 Trolltech AS.  All rights reserved.
**
** This file is part of TQt Designer.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid TQt Enterprise Edition or TQt Professional Edition
** licenses may use this file in accordance with the TQt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about TQt Commercial License Agreements.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#include "asciivalidator.h"

#include <tqstring.h>

AsciiValidator::AsciiValidator( TQObject * tqparent, const char *name )
    : TQValidator( tqparent, name ), functionName( FALSE )
{
}

AsciiValidator::AsciiValidator( bool funcName, TQObject * tqparent, const char *name )
    : TQValidator( tqparent, name ), functionName( funcName )
{
}

AsciiValidator::AsciiValidator( const TQString &allow, TQObject * tqparent, const char *name )
    : TQValidator( tqparent, name ), functionName( FALSE ), allowedChars( allow )
{
}

AsciiValidator::~AsciiValidator()
{
}

TQValidator::State AsciiValidator::validate( TQString &s, int & ) const
{
    bool inParen = FALSE;
    bool outParen = FALSE;
    if ( !s.isEmpty() && s[0].row() == 0 && s[0].cell() >= '0' && s[0].cell() <= '9' )
	s[0] = '_';
    for ( int i = 0, j = 0; i < (int) s.length(); i++ ) {
	uchar r = s[i].row();
	uchar c = s[i].cell();

	if ( outParen ) { // check if we have 'const' or 'volatile'
	    static const TQString con = " const";
	    static const TQString vol = " volatile";
	    TQString mid = s.mid( j );
	    if ( !( con.startsWith( mid ) || vol.startsWith( mid ) ) )
		return TQValidator::Invalid;
	}

	if ( inParen && c != ')' )
	    continue;

	if ( r == 0 && ( ( c >= '0' && c <= '9' ) ||
			 ( c >= 'a' && c <= 'z' ) ||
			 ( c >= 'A' && c <= 'Z' ) ) )
	    continue;
	
	if ( functionName ) {
	    if ( c == '(' ) {
		inParen = TRUE;
		continue;
	    }
	    if ( c == ')' ) {
		outParen = TRUE;
		j = i + 1;
		continue;
	    }
	}
	
	if ( allowedChars.find( s[ i ] ) != -1 )
	    continue;
	
	s[i] = '_';
    }
    return TQValidator::Acceptable;
}