htmltoken.cpp

monqueror一个很具有参考价值的源玛

/*
    This file is part of the KDE libraries

    Copyright (C) 1997 Martin Jones ([e-mail])
              (C) 1997 Torben Weis ([e-mail])
              (C) 1998 Waldo Bastian ([e-mail])

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.
*/
//----------------------------------------------------------------------------
//
// KDE HTML Widget - Tokenizers
// $Id: htmltoken.cpp,v 1.1.1.1 2002/01/16 10:39:56 ymwei Exp $

#include "htmltoken.h"
#include "htmlhashes.h"
using namespace khtml;

// ---------------------------------------------------------------------------

DOMString Attribute::name() const
{
    if(id)
	return getAttrName(id);
    else if(n)
	return n;
    else
	return DOMString();
}

void Attribute::setName(const DOMString &name)
{
    if(n) n->deref();
    n = 0;
    id = khtml::getAttrID(name.string().lower().ascii(), name.length());
    if(!id) {
	// no HTML attribute, we store the whole name
	n = name.implementation();
	n->ref();
    }
}

//-----------------------------------------------------------------------------

AttributeList::AttributeList()
{
    _list = 0;
    _len = 0;
}

AttributeList::AttributeList( const AttributeList &other)
{
    if(!other._len)
    {
	_len = 0;
	_list = 0;
    }
    _len = other._len;
    _list = new Attribute [ _len ];
    int i = 0;
    while(i < (int)_len)
    {
       _list[i] = other._list[i];
       i++;
    }
}

AttributeList &AttributeList::operator = (const AttributeList &other )
{
    if(_list) delete _list;
    if(!other._len)
    {
	_len = 0;
	_list = 0;
    }
    _len = other._len;
    _list = new Attribute [ _len ];
    int i = 0;
    while(i < (int)_len)
    {
	_list[i] = other._list[i];
	i++;
    }
    return *this;
}

AttributeList::AttributeList( Attribute *list, unsigned int len)
{
    _list = list;
    _len = len;
}

AttributeList::~AttributeList()
{
    if(_list) delete [] _list;
}


ushort AttributeList::id(uint index) const
{
    return _list[index].id;
}

DOMString AttributeList::name(uint index) const
{
    if(index >= _len) return 0;

    return _list[index].name();
}

DOMString AttributeList::value(uint index) const
{
    if(index >= _len) return 0;

    return _list[index].value();
}

void AttributeList::add(const Attribute &a)
{
    int index = find(a.id);

    if( index==-1 || a.id==0 )
    {
	Attribute *nList = new Attribute [ _len+1 ];
	if(_list)
	{
	    int i = 0;
	    while(i < (int)_len)
	    {
	       nList[i] = _list[i];
	       i++;
	    }
	    delete [] _list;
	}
	_list = nList;
	_list[_len] = a;
	_len++;
    }
}

unsigned int AttributeList::length() const
{
    return _len;
}

int AttributeList::find(const DOMString &name) const
{
    DOMString n = name.string().upper();
    int i = 0;
    while( i<(int)_len )
    {
	if(_list[i].name() == n)
	    return i;
	i++;
    }
    return -1;
}

int AttributeList::find(ushort id) const
{
    int i = 0;
    while( i<(int)_len )
    {
	if(_list[i].id == id)
	    return i;
	i++;
    }
    return -1;
}


DOMString AttributeList::operator [] (const DOMString &name) const
{
    int i = find(name);
    if(i == -1) return 0;
    return value((uint) i);
}

Attribute *AttributeList::operator [] (uint index) const
{
    if(index > _len) return 0;
    return _list+index;
}

void AttributeList::remove(DOMString name)
{
    int index = find(name);

    if(index == -1)
	return;

    remove(index);
}

void AttributeList::remove(uint index)
{
    if(index > _len) return;

    Attribute *nList = new Attribute [ _len-1 ];
    uint i = 0;
    while(i < index)
    {
       nList[i] = _list[i];
       i++;
    }
    while(i < _len-1)
    {
       nList[i] = _list[i+1];
       i++;
    }

    delete [] _list;
    _list = nList;
    _len--;
}

// ---------------------------------------------------------------------------

// contructor for a text token
Token::Token(QChar *t, uint len)
{
    id = ID_TEXT;
    text = DOMString(t, len);
}

// tag without attributes
Token::Token(ushort _id)
{
    id = _id;
}

// tag with attributes
Token::Token(ushort _id, Attribute *lst, uint len)
{
    id = _id;
    attrs = AttributeList(lst, len);
}