jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/dtdparser/Resolver.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/dtdparser/Resolver.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/dtdparser/Resolver.java

Thu, 31 Aug 2017 15:18:52 +0800

author: aoqi
date: Thu, 31 Aug 2017 15:18:52 +0800
changeset 637: 9c07ef4934dd
parent 397: b99d7e355d4b
parent 0: 373ffda63c9a
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code 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 General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.xml.internal.dtdparser;
 import org.xml.sax.EntityResolver;
 import org.xml.sax.InputSource;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
 import java.net.URLConnection;
 import java.util.Hashtable;
 /**
  * This entity resolver class provides a number of utilities which can help
  * managment of external parsed entities in XML.  These are commonly used
  * to hold markup declarations that are to be used as part of a Document
  * Type Declaration (DTD), or to hold text marked up with XML.
  * <p/>
  * <P> Features include: <UL>
  * <p/>
  * <LI> Static factory methods are provided for constructing SAX InputSource
  * objects from Files, URLs, or MIME objects.  This eliminates a class of
  * error-prone coding in applications.
  * <p/>
  * <LI> Character encodings for XML documents are correctly supported: <UL>
  * <p/>
  * <LI> The encodings defined in the RFCs for MIME content types
  * (2046 for general MIME, and 2376 for XML in particular), are
  * supported, handling <em>charset=...</em> attributes and accepting
  * content types which are known to be safe for use with XML;
  * <p/>
  * <LI> The character encoding autodetection algorithm identified
  * in the XML specification is used, and leverages all of
  * the JDK 1.1 (and later) character encoding support.
  * <p/>
  * <LI> The use of MIME typing may optionally be disabled, forcing the
  * use of autodetection, to support web servers which don't correctly
  * report MIME types for XML.  For example, they may report text that
  * is encoded in EUC-JP as being US-ASCII text, leading to fatal
  * errors during parsing.
  * <p/>
  * <LI> The InputSource objects returned by this class always
  * have a <code>java.io.Reader</code> available as the "character
  * stream" property.
  * <p/>
  * </UL>
  * <p/>
  * <LI> Catalog entries can map public identifiers to Java resources or
  * to local URLs.  These are used to reduce network dependencies and loads,
  * and will often be used for external DTD components.  For example, packages
  * shipping DTD files as resources in JAR files can eliminate network traffic
  * when accessing them, and sites may provide local caches of common DTDs.
  * Note that no particular catalog syntax is supported by this class, only
  * the notion of a set of entries.
  * <p/>
  * </UL>
  * <p/>
  * <P> Subclasses can perform tasks such as supporting new URI schemes for
  * URIs which are not URLs, such as URNs (see RFC 2396) or for accessing
  * MIME entities which are part of a <em>multipart/related</em> group
  * (see RFC 2387).  They may also be used to support particular catalog
  * syntaxes, such as the <a href="http://www.oasis-open.org/html/a401.htm">
  * SGML/Open Catalog (SOCAT)</a> which supports the SGML notion of "Formal
  * Public Identifiers (FPIs).
  *
  * @author David Brownell
  * @author Janet Koenig
  * @version 1.3 00/02/24
  */
 public class Resolver implements EntityResolver {
     private boolean ignoringMIME;
     // table mapping public IDs to (local) URIs
     private Hashtable id2uri;
     // tables mapping public IDs to resources and classloaders
     private Hashtable id2resource;
     private Hashtable id2loader;
     //
     // table of MIME content types (less attributes!) known
     // to be mostly "OK" to use with XML MIME entities.  the
     // idea is to rule out obvious braindamage ("image/jpg")
     // not the subtle stuff ("text/html") that might actually
     // be (or become) safe.
     //
     private static final String types [] = {
         "application/xml",
         "text/xml",
         "text/plain",
         "text/html", // commonly mis-inferred
         "application/x-netcdf", // this is often illegal XML
         "content/unknown"
     };
     /**
      * Constructs a resolver.
      */
     public Resolver() {
     }
     /**
      * Returns an input source, using the MIME type information and URL
      * scheme to statically determine the correct character encoding if
      * possible and otherwise autodetecting it.  MIME carefully specifies
      * the character encoding defaults, and how attributes of the content
      * type can change it.  XML further specifies two mandatory encodings
      * (UTF-8 and UTF-16), and includes an XML declaration which can be
      * used to internally label most documents encoded using US-ASCII
      * supersets (such as Shift_JIS, EUC-JP, ISO-2022-*, ISO-8859-*, and
      * more).
      * <p/>
      * <P> This method can be used to access XML documents which do not
      * have URIs (such as servlet input streams, or most JavaMail message
      * entities) and to support access methods such as HTTP POST or PUT.
      * (URLs normally return content using the GET method.)
      * <p/>
      * <P> <em> The caller should set the system ID in order for relative URIs
      * found in this document to be interpreted correctly.</em> In some cases,
      * a custom resolver will need to be used; for example, documents
      * may be grouped in a single MIME "multipart/related" bundle, and
      * relative URLs would refer to other documents in that bundle.
      *
      * @param contentType The MIME content type for the source for which
      *                    an InputSource is desired, such as <em>text/xml;charset=utf-8</em>.
      * @param stream      The input byte stream for the input source.
      * @param checkType   If true, this verifies that the content type is known
      *                    to support XML documents, such as <em>application/xml</em>.
      * @param scheme      Unless this is "file", unspecified MIME types
      *                    default to US-ASCII.  Files are always autodetected since most
      *                    file systems discard character encoding information.
      */
     public static InputSource createInputSource(String contentType,
                                                 InputStream stream,
                                                 boolean checkType,
                                                 String scheme) throws IOException {
         InputSource retval;
         String charset = null;
         if (contentType != null) {
             int index;
             contentType = contentType.toLowerCase();
             index = contentType.indexOf(';');
             if (index != -1) {
                 String attributes;
                 attributes = contentType.substring(index + 1);
                 contentType = contentType.substring(0, index);
                 // use "charset=..." if it's available
                 index = attributes.indexOf("charset");
                 if (index != -1) {
                     attributes = attributes.substring(index + 7);
                     // strip out subsequent attributes
                     if ((index = attributes.indexOf(';')) != -1)
                         attributes = attributes.substring(0, index);
                     // find start of value
                     if ((index = attributes.indexOf('=')) != -1) {
                         attributes = attributes.substring(index + 1);
                         // strip out rfc822 comments
                         if ((index = attributes.indexOf('(')) != -1)
                             attributes = attributes.substring(0, index);
                         // double quotes are optional
                         if ((index = attributes.indexOf('"')) != -1) {
                             attributes = attributes.substring(index + 1);
                             attributes = attributes.substring(0,
                                     attributes.indexOf('"'));
                         }
                         charset = attributes.trim();
                         // XXX "\;", "\)" etc were mishandled above
                     }
                 }
             }
             //
             // Check MIME type.
             //
             if (checkType) {
                 boolean isOK = false;
                 for (int i = 0; i < types.length; i++)
                     if (types[i].equals(contentType)) {
                         isOK = true;
                         break;
                     }
                 if (!isOK)
                     throw new IOException("Not XML: " + contentType);
             }
             //
             // "text/*" MIME types have hard-wired character set
             // defaults, as specified in the RFCs.  For XML, we
             // ignore the system "file.encoding" property since
             // autodetection is more correct.
             //
             if (charset == null) {
                 contentType = contentType.trim();
                 if (contentType.startsWith("text/")) {
                     if (!"file".equalsIgnoreCase(scheme))
                         charset = "US-ASCII";
                 }
                 // "application/*" has no default
             }
         }
         retval = new InputSource(XmlReader.createReader(stream, charset));
         retval.setByteStream(stream);
         retval.setEncoding(charset);
         return retval;
     }
     /**
      * Creates an input source from a given URI.
      *
      * @param uri       the URI (system ID) for the entity
      * @param checkType if true, the MIME content type for the entity
      *                  is checked for document type and character set encoding.
      */
     static public InputSource createInputSource(URL uri, boolean checkType)
             throws IOException {
         URLConnection conn = uri.openConnection();
         InputSource retval;
         if (checkType) {
             String contentType = conn.getContentType();
             retval = createInputSource(contentType, conn.getInputStream(),
                     false, uri.getProtocol());
         } else {
             retval = new InputSource(XmlReader.createReader(conn.getInputStream()));
         }
         retval.setSystemId(conn.getURL().toString());
         return retval;
     }
     /**
      * Creates an input source from a given file, autodetecting
      * the character encoding.
      */
     static public InputSource createInputSource(File file)
             throws IOException {
         InputSource retval;
         String path;
         retval = new InputSource(XmlReader.createReader(new FileInputStream(file)));
         // On JDK 1.2 and later, simplify this:
         //    "path = file.toURL ().toString ()".
         path = file.getAbsolutePath();
         if (File.separatorChar != '/')
             path = path.replace(File.separatorChar, '/');
         if (!path.startsWith("/"))
             path = "/" + path;
         if (!path.endsWith("/") && file.isDirectory())
             path = path + "/";
         retval.setSystemId("file:" + path);
         return retval;
     }
     /**
      * <b>SAX:</b>
      * Resolve the given entity into an input source.  If the name can't
      * be mapped to a preferred form of the entity, the URI is used.  To
      * resolve the entity, first a local catalog mapping names to URIs is
      * consulted.  If no mapping is found there, a catalog mapping names
      * to java resources is consulted.  Finally, if neither mapping found
      * a copy of the entity, the specified URI is used.
      * <p/>
      * <P> When a URI is used, <a href="#createInputSource">
      * createInputSource</a> is used to correctly deduce the character
      * encoding used by this entity.  No MIME type checking is done.
      *
      * @param name Used to find alternate copies of the entity, when
      *             this value is non-null; this is the XML "public ID".
      * @param uri  Used when no alternate copy of the entity is found;
      *             this is the XML "system ID", normally a URI.
      */
     public InputSource resolveEntity(String name, String uri)
             throws IOException {
         InputSource retval;
         String mappedURI = name2uri(name);
         InputStream stream;
         // prefer explicit URI mappings, then bundled resources...
         if (mappedURI == null && (stream = mapResource(name)) != null) {
             uri = "java:resource:" + (String) id2resource.get(name);
             retval = new InputSource(XmlReader.createReader(stream));
             // ...and treat all URIs the same (as URLs for now).
         } else {
             URL url;
             URLConnection conn;
             if (mappedURI != null)
                 uri = mappedURI;
             else if (uri == null)
                 return null;
             url = new URL(uri);
             conn = url.openConnection();
             uri = conn.getURL().toString();
             // System.out.println ("++ URI: " + url);
             if (ignoringMIME)
                 retval = new InputSource(XmlReader.createReader(conn.getInputStream()));
             else {
                 String contentType = conn.getContentType();
                 retval = createInputSource(contentType,
                         conn.getInputStream(),
                         false, url.getProtocol());
             }
         }
         retval.setSystemId(uri);
         retval.setPublicId(name);
         return retval;
     }
     /**
      * Returns true if this resolver is ignoring MIME types in the documents
      * it returns, to work around bugs in how servers have reported the
      * documents' MIME types.
      */
     public boolean isIgnoringMIME() {
         return ignoringMIME;
     }
     /**
      * Tells the resolver whether to ignore MIME types in the documents it
      * retrieves.  Many web servers incorrectly assign text documents a
      * default character encoding, even when that is incorrect.  For example,
      * all HTTP text documents default to use ISO-8859-1 (used for Western
      * European languages), and other MIME sources default text documents
      * to use US-ASCII (a seven bit encoding).  For XML documents which
      * include text encoding declarations (as most should do), these server
      * bugs can be worked around by ignoring the MIME type entirely.
      */
     public void setIgnoringMIME(boolean value) {
         ignoringMIME = value;
     }
     // maps the public ID to an alternate URI, if one is registered
     private String name2uri(String publicId) {
         if (publicId == null || id2uri == null)
             return null;
         return (String) id2uri.get(publicId);
     }
     /**
      * Registers the given public ID as corresponding to a particular
      * URI, typically a local copy.  This URI will be used in preference
      * to ones provided as system IDs in XML entity declarations.  This
      * mechanism would most typically be used for Document Type Definitions
      * (DTDs), where the public IDs are formally managed and versioned.
      *
      * @param publicId The managed public ID being mapped
      * @param uri      The URI of the preferred copy of that entity
      */
     public void registerCatalogEntry(String publicId,
                                      String uri) {
         if (id2uri == null)
             id2uri = new Hashtable(17);
         id2uri.put(publicId, uri);
     }
     // return the resource as a stream
     private InputStream mapResource(String publicId) {
         // System.out.println ("++ PUBLIC: " + publicId);
         if (publicId == null || id2resource == null)
             return null;
         String resourceName = (String) id2resource.get(publicId);
         ClassLoader loader = null;
         if (resourceName == null)
             return null;
         // System.out.println ("++ Resource: " + resourceName);
         if (id2loader != null)
             loader = (ClassLoader) id2loader.get(publicId);
         // System.out.println ("++ Loader: " + loader);
         if (loader == null)
             return ClassLoader.getSystemResourceAsStream(resourceName);
         return loader.getResourceAsStream(resourceName);
     }
     /**
      * Registers a given public ID as corresponding to a particular Java
      * resource in a given class loader, typically distributed with a
      * software package.  This resource will be preferred over system IDs
      * included in XML documents.  This mechanism should most typically be
      * used for Document Type Definitions (DTDs), where the public IDs are
      * formally managed and versioned.
      * <p/>
      * <P> If a mapping to a URI has been provided, that mapping takes
      * precedence over this one.
      *
      * @param publicId     The managed public ID being mapped
      * @param resourceName The name of the Java resource
      * @param loader       The class loader holding the resource, or null if
      *                     it is a system resource.
      */
     public void registerCatalogEntry(String publicId,
                                      String resourceName,
                                      ClassLoader loader) {
         if (id2resource == null)
             id2resource = new Hashtable(17);
         id2resource.put(publicId, resourceName);
         if (loader != null) {
             if (id2loader == null)
                 id2loader = new Hashtable(17);
             id2loader.put(publicId, loader);
         }
     }
 }

Mercurial > jdk8-mips64-public > jaxws / annotate

src/share/jaxws_classes/com/sun/xml/internal/dtdparser/Resolver.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/dtdparser/Resolver.java