libreoffice/unoxml/source/dom/documentbuilder.cxx

/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: documentbuilder.cxx,v $
 * $Revision: 1.5 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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 Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
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#include "documentbuilder.hxx"
#include "node.hxx"
#include "document.hxx"

namespace DOM
{
    CDocumentBuilder::CDocumentBuilder(const Reference< XMultiServiceFactory >& xFactory)
        : m_aFactory(xFactory)
    {
        // init libxml. libxml will protect itself against multiple
        // initializations so there is no problem here if this gets
        // called multiple times.
        xmlInitParser();
    }

    Reference< XInterface > CDocumentBuilder::_getInstance(const Reference< XMultiServiceFactory >& rSMgr)
    {
        // XXX
        return static_cast< XDocumentBuilder* >(new CDocumentBuilder(rSMgr));
    }

    const char* CDocumentBuilder::aImplementationName = "com.sun.star.comp.xml.dom.DocumentBuilder";
    const char* CDocumentBuilder::aSupportedServiceNames[] = {
        "com.sun.star.xml.dom.DocumentBuilder",
        NULL
    };

    OUString CDocumentBuilder::_getImplementationName()
    {
        return OUString::createFromAscii(aImplementationName);
    }
    Sequence<OUString> CDocumentBuilder::_getSupportedServiceNames()
    {
        Sequence<OUString> aSequence;
        for (int i=0; aSupportedServiceNames[i]!=NULL; i++) {
            aSequence.realloc(i+1);
            aSequence[i]=(OUString::createFromAscii(aSupportedServiceNames[i]));
        }
        return aSequence;
    }

    Sequence< OUString > SAL_CALL CDocumentBuilder::getSupportedServiceNames()
        throw (RuntimeException)
    {
        return CDocumentBuilder::_getSupportedServiceNames();
    }

    OUString SAL_CALL CDocumentBuilder::getImplementationName()
        throw (RuntimeException)
    {
        return CDocumentBuilder::_getImplementationName();
    }

    sal_Bool SAL_CALL CDocumentBuilder::supportsService(const OUString& aServiceName)
        throw (RuntimeException)
    {
        Sequence< OUString > supported = CDocumentBuilder::_getSupportedServiceNames();
        for (sal_Int32 i=0; i<supported.getLength(); i++)
        {
            if (supported[i] == aServiceName) return sal_True;
        }
        return sal_False;
    }

    Reference< XDOMImplementation > SAL_CALL CDocumentBuilder::getDOMImplementation()
        throw (RuntimeException)
    {

        return Reference< XDOMImplementation >();
    }

    sal_Bool SAL_CALL CDocumentBuilder::isNamespaceAware()
        throw (RuntimeException)
    {
        return sal_True;
    }

    sal_Bool SAL_CALL CDocumentBuilder::isValidating()
        throw (RuntimeException)
    {
        return sal_False;
    }

    Reference< XDocument > SAL_CALL CDocumentBuilder::newDocument()
        throw (RuntimeException)
    {
        // create a new document
        xmlDocPtr pDocument = xmlNewDoc((const xmlChar*)"1.0");
        return Reference< XDocument >(static_cast< CDocument* >(CNode::get((xmlNodePtr)pDocument)));
    }

    Reference< XDocument > SAL_CALL CDocumentBuilder::parse(const Reference< XInputStream >& is)
        throw (RuntimeException)
    {
        sal_Int32 bsize = 4096;
        char* buffer = (char*)rtl_allocateMemory(bsize);
        sal_Int32 nbytes = 0;
        sal_Int32 nread = 0;
        sal_Int32 csize = bsize;
        Sequence< sal_Int8 > chunk(csize);
        do
        {
            // read mac csize bytes
            nread = is->readBytes(chunk, csize);
            // grow buffer?
            if ((nbytes + nread) > bsize)
            {
                bsize = 2*bsize;
                char *new_buffer = (char*)rtl_reallocateMemory(buffer, bsize);
                if (new_buffer == 0)
                    throw RuntimeException();
                buffer = new_buffer;
            }
            // copy bytes to buffer
            rtl_copyMemory(buffer+nbytes, chunk.getConstArray(), nread);
            nbytes += nread;
        }
        while(nread == csize);

        // try to parse the buffer
        xmlDocPtr pDoc = xmlParseMemory(buffer, nbytes);
        // XXX error checking
        rtl_freeMemory(buffer);

        return Reference< XDocument >(static_cast< CDocument* >(CNode::get((xmlNodePtr)pDoc)));

    }

}