~ubuntu-branches/debian/wheezy/jing-trang/wheezy

package com.thaiopensource.resolver.catalog;

 

import com.thaiopensource.resolver.ResolverException;

import com.thaiopensource.resolver.xml.XMLDocumentIdentifier;

import com.thaiopensource.resolver.xml.sax.SAXResolver;

import com.thaiopensource.xml.sax.DraconianErrorHandler;

import org.apache.xml.resolver.Catalog;

import org.apache.xml.resolver.CatalogManager;

import org.apache.xml.resolver.readers.OASISXMLCatalogReader;

import org.xml.sax.SAXException;

import org.xml.sax.XMLReader;

 

import javax.xml.transform.sax.SAXSource;

import java.io.IOException;

import java.net.URL;

 

/**

 * A catalog with customized parsing of catalog files. In particular, it only supports

 * OASIS XML Catalogs and it uses a SAXResolver for access to the catalog URIs.

 */

class OasisCatalog extends Catalog {

  private final SAXResolver saxResolver;

  

  OasisCatalog(CatalogManager catalogManager, SAXResolver saxResolver) {

    super(catalogManager);

    this.saxResolver = saxResolver;

    // don't call setupReaders; since we use our own parseCatalogFile

    // we'll load the catalogs lazily

  }

 

  protected void parseCatalogFile(String uri) throws IOException {

    OASISXMLCatalogReader catalogReader = new OASISXMLCatalogReader();

    try {

      SAXSource source = saxResolver.resolve(new XMLDocumentIdentifier(uri, null, OASISXMLCatalogReader.namespaceName));

      String systemId = source.getInputSource().getSystemId();

      if (systemId == null)

        systemId = uri;

      base = new URL(systemId);

      catalogReader.setCatalog(this);

      XMLReader xmlReader = source.getXMLReader();

      xmlReader.setEntityResolver(new CatalogEntityResolver(xmlReader.getEntityResolver()));

      xmlReader.setContentHandler(catalogReader);

      xmlReader.setErrorHandler(new DraconianErrorHandler());

      xmlReader.parse(source.getInputSource());

    }

    catch (SAXException e) {

      Exception wrapped = e.getException();

      // this will get unwrapped by CatalogResolver

      throw new ResolverIOException(wrapped instanceof ResolverException

                                    ? (ResolverException)wrapped

                                    : new ResolverException(e));

    }

  }

}