node.c

电驴下载工具eMule0.47aVeryCD的源代码,可作分析测试也可用于P2P软件的开发研究.

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000-2003 Intel Corporation 
// All rights reserved. 
//
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions are met: 
//
// * Redistributions of source code must retain the above copyright notice, 
// this list of conditions and the following disclaimer. 
// * Redistributions in binary form must reproduce the above copyright notice, 
// this list of conditions and the following disclaimer in the documentation 
// and/or other materials provided with the distribution. 
// * Neither name of Intel Corporation nor the names of its contributors 
// may be used to endorse or promote products derived from this software 
// without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
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///////////////////////////////////////////////////////////////////////////

#include "ixmlparser.h"

/*================================================================
*   ixmlNode_init
*       Intializes a node.
*       External function.
*
*=================================================================*/
void
ixmlNode_init( IN IXML_Node * nodeptr )
{
    assert( nodeptr != NULL );
    memset( nodeptr, 0, sizeof( IXML_Node ) );

}

/*================================================================
*   ixmlCDATASection_init
*       Initializes a CDATASection node.
*       External function.
*
*=================================================================*/
void
ixmlCDATASection_init( IN IXML_CDATASection * nodeptr )
{
    memset( nodeptr, 0, sizeof( IXML_CDATASection ) );
}

/*================================================================
*   ixmlCDATASection_free
*       frees a CDATASection node.
*       External function.
*
*=================================================================*/
void
ixmlCDATASection_free( IN IXML_CDATASection * nodeptr )
{
    if( nodeptr != NULL ) {
        ixmlNode_free( ( IXML_Node * ) nodeptr );
    }
}

/*================================================================
*   ixmlNode_freeSingleNode
*       frees a node content.
*       Internal to parser only.
*
*=================================================================*/
void
ixmlNode_freeSingleNode( IN IXML_Node * nodeptr )
{
    IXML_Element *element = NULL;

    if( nodeptr != NULL ) {
        if( nodeptr->nodeName != NULL ) {
            free( nodeptr->nodeName );
        }

        if( nodeptr->nodeValue != NULL ) {
            free( nodeptr->nodeValue );
        }

        if( nodeptr->namespaceURI != NULL ) {
            free( nodeptr->namespaceURI );
        }

        if( nodeptr->prefix != NULL ) {
            free( nodeptr->prefix );
        }

        if( nodeptr->localName != NULL ) {
            free( nodeptr->localName );
        }

        if( nodeptr->nodeType == eELEMENT_NODE ) {
            element = ( IXML_Element * ) nodeptr;
            free( element->tagName );
        }

        free( nodeptr );

    }
}

/*================================================================
*   ixmlNode_free
*       Frees all nodes under nodeptr subtree.
*       External function.
*
*=================================================================*/
void
ixmlNode_free( IN IXML_Node * nodeptr )
{
    if( nodeptr != NULL ) {
        ixmlNode_free( nodeptr->firstChild );
        ixmlNode_free( nodeptr->nextSibling );
        ixmlNode_free( nodeptr->firstAttr );

        ixmlNode_freeSingleNode( nodeptr );
    }
}

/*================================================================
*   ixmlNode_getNodeName
*       Returns the nodename(the qualified name)
*       External function.
*
*=================================================================*/
const DOMString
ixmlNode_getNodeName( IN IXML_Node * nodeptr )
{

    if( nodeptr != NULL ) {
        return ( nodeptr->nodeName );
    }

    return NULL;
}

/*================================================================
*   ixmlNode_getLocalName
*       Returns the node local name
*       External function.          		
*
*=================================================================*/
const DOMString
ixmlNode_getLocalName( IN IXML_Node * nodeptr )
{

    if( nodeptr != NULL ) {
        return ( nodeptr->localName );
    }

    return NULL;
}

/*================================================================
*   ixmlNode_setNamespaceURI
*       sets the namespace URI of the node.
*       Internal function.
*	Return:
*       IXML_SUCCESS or failure	
*
*=================================================================*/
int
ixmlNode_setNamespaceURI( IN IXML_Node * nodeptr,
                          IN char *namespaceURI )
{

    if( nodeptr == NULL ) {
        return IXML_INVALID_PARAMETER;
    }

    if( nodeptr->namespaceURI != NULL ) {
        free( nodeptr->namespaceURI );
        nodeptr->namespaceURI = NULL;
    }

    if( namespaceURI != NULL ) {
        nodeptr->namespaceURI = strdup( namespaceURI );
        if( nodeptr->namespaceURI == NULL ) {
            return IXML_INSUFFICIENT_MEMORY;
        }
    }

    return IXML_SUCCESS;
}

/*================================================================
*   ixmlNode_setPrefix
*       set the prefix of the node.
*       Internal to parser only.
*	Returns:	
*       IXML_SUCCESS or failure.
*
*=================================================================*/
int
ixmlNode_setPrefix( IN IXML_Node * nodeptr,
                    IN char *prefix )
{

    if( nodeptr == NULL ) {
        return IXML_INVALID_PARAMETER;
    }

    if( nodeptr->prefix != NULL ) {
        free( nodeptr->prefix );
        nodeptr->prefix = NULL;
    }

    if( prefix != NULL ) {
        nodeptr->prefix = strdup( prefix );
        if( nodeptr->prefix == NULL ) {
            return IXML_INSUFFICIENT_MEMORY;
        }
    }

    return IXML_SUCCESS;

}

/*================================================================
*   ixmlNode_setLocalName
*	    set the localName of the node.
*       Internal to parser only.
*	Returns:	
*       IXML_SUCCESS or failure.
*
*=================================================================*/
int
ixmlNode_setLocalName( IN IXML_Node * nodeptr,
                       IN char *localName )
{

    assert( nodeptr != NULL );

    if( nodeptr->localName != NULL ) {
        free( nodeptr->localName );
        nodeptr->localName = NULL;
    }

    if( localName != NULL ) {
        nodeptr->localName = strdup( localName );
        if( nodeptr->localName == NULL ) {
            return IXML_INSUFFICIENT_MEMORY;
        }
    }

    return IXML_SUCCESS;
}

/*================================================================
*   ixmlNode_getNodeNamespaceURI
*       Returns the node namespaceURI
*       External function.
*   Returns:		
*       the namespaceURI of the node
*
*=================================================================*/
const DOMString
ixmlNode_getNamespaceURI( IN IXML_Node * nodeptr )
{
    DOMString retNamespaceURI = NULL;

    if( nodeptr != NULL ) {
        retNamespaceURI = nodeptr->namespaceURI;
    }

    return retNamespaceURI;
}

/*================================================================
*   ixmlNode_getPrefix
*       Returns the node prefix
*       External function.
*   Returns:		
*       the prefix of the node.
*
*=================================================================*/
DOMString
ixmlNode_getPrefix( IN IXML_Node * nodeptr )
{
    DOMString prefix = NULL;

    if( nodeptr != NULL ) {
        prefix = nodeptr->prefix;
    }

    return prefix;

}

/*================================================================
*   ixmlNode_getNodeValue
*       Returns the nodeValue of this node
*       External function.
*   Return:
*       the nodeValue of the node.
*
*=================================================================*/
DOMString
ixmlNode_getNodeValue( IN IXML_Node * nodeptr )
{

    if( nodeptr != NULL ) {
        return ( nodeptr->nodeValue );
    }

    return NULL;
}

/*================================================================
*   ixmlNode_setNodeValue
*       Sets the nodeValue
*       Internal function.
*   Returns:    
*       IXML_SUCCESS or failure
*
*=================================================================*/
int
ixmlNode_setNodeValue( IN IXML_Node * nodeptr,
                       IN char *newNodeValue )
{
    int rc = IXML_SUCCESS;

    if( nodeptr == NULL ) {
        return IXML_INVALID_PARAMETER;
    }

    if( nodeptr->nodeValue != NULL ) {
        free( nodeptr->nodeValue );
        nodeptr->nodeValue = NULL;
    }

    if( newNodeValue != NULL ) {
        nodeptr->nodeValue = strdup( newNodeValue );
        if( nodeptr->nodeValue == NULL ) {
            return IXML_INSUFFICIENT_MEMORY;
        }
    }

    return rc;
}

/*================================================================
*   ixmlNode_getNodeType
*       Gets the NodeType of this node
*       External function.
*
*=================================================================*/
const unsigned short
ixmlNode_getNodeType( IN IXML_Node * nodeptr )
{
    if( nodeptr != NULL ) {
        return ( nodeptr->nodeType );
    } else {
        return ( eINVALID_NODE );
    }
}

/*================================================================
*   ixmlNode_getParentNode
*       Get the parent node
*       External function.
*   Return:    
*       
*=================================================================*/
IXML_Node *
ixmlNode_getParentNode( IN IXML_Node * nodeptr )
{

    if( nodeptr != NULL ) {
        return nodeptr->parentNode;
    } else {
        return NULL;
    }
}

/*================================================================
*   ixmlNode_getFirstChild
*       Returns the first child of nodeptr.
*       External function.
*
*=================================================================*/
IXML_Node *
ixmlNode_getFirstChild( IN IXML_Node * nodeptr )
{
    if( nodeptr != NULL ) {
        return nodeptr->firstChild;
    } else {
        return NULL;
    }
}

/*================================================================
*   ixmlNode_getLastChild
*       Returns the last child of nodeptr.