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//Copyright (c) 2006, Adobe Systems Incorporated
//All rights reserved.
//
//        Redistribution and use in source and binary forms, with or without
//        modification, are permitted provided that the following conditions are met:
//        1. Redistributions of source code must retain the above copyright
//        notice, this list of conditions and the following disclaimer.
//        2. 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.
//        3. All advertising materials mentioning features or use of this software
//        must display the following acknowledgement:
//        This product includes software developed by the Adobe Systems Incorporated.
//        4. Neither the name of the Adobe Systems Incorporated 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 ADOBE SYSTEMS INCORPORATED ''AS IS'' AND ANY
//        EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//        WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
//        DISCLAIMED. IN NO EVENT SHALL ADOBE SYSTEMS INCORPORATED BE LIABLE FOR ANY
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//        (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//        SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//        http://www.adobe.com/devnet/xmp/library/eula-xmp-library-java.html

package com.itextpdf.xmp;

import com.itextpdf.xmp.impl.XMPMetaImpl;
import com.itextpdf.xmp.impl.XMPMetaParser;
import com.itextpdf.xmp.impl.XMPSchemaRegistryImpl;
import com.itextpdf.xmp.impl.XMPSerializerHelper;
import com.itextpdf.xmp.options.ParseOptions;
import com.itextpdf.xmp.options.SerializeOptions;

import java.io.InputStream;
import java.io.OutputStream;


/**
 * Creates XMPMeta-instances from an InputStream
 *
 * @since 30.01.2006
 */
public final class XMPMetaFactory {
    /**
     * The singleton instance of the XMPSchemaRegistry.
     */
    private static XMPSchemaRegistry schema = new XMPSchemaRegistryImpl();
    /**
     * cache for version info
     */
    private static XMPVersionInfo versionInfo = null;

    /**
     * Hides public constructor
     */
    private XMPMetaFactory() {
        // EMPTY
    }

    /**
     * @return Returns the singleton instance of the XMPSchemaRegistry.
     */
    public static XMPSchemaRegistry getSchemaRegistry() {
        return schema;
    }

    /**
     * @return Returns an empty XMPMeta-object.
     */
    public static XMPMeta create() {
        return new XMPMetaImpl();
    }

    /**
     * Parsing with default options.
     *
     * @param in an InputStream
     * @return Returns the XMPMeta-object created from the input.
     * @throws XMPException If the file is not well-formed XML or if the parsing fails.
     * @see XMPMetaFactory#parse(InputStream, ParseOptions)
     */
    public static XMPMeta parse(InputStream in) throws XMPException {
        return parse(in, null);
    }

    /**
     * These functions support parsing serialized RDF into an XMP object, and serailizing an XMP
     * object into RDF. The input for parsing may be any valid Unicode
     * encoding. ISO Latin-1 is also recognized, but its use is strongly discouraged. Serialization
     * is always as UTF-8.
     * 

* parseFromBuffer() parses RDF from an InputStream. The encoding * is recognized automatically. * * @param in an InputStream * @param options Options controlling the parsing.
* The available options are: *

    *
  • XMP_REQUIRE_XMPMETA - The <x:xmpmeta> XML element is required around * <rdf:RDF>. *
  • XMP_STRICT_ALIASING - Do not reconcile alias differences, throw an exception. *
* Note:The XMP_STRICT_ALIASING option is not yet implemented. * @return Returns the XMPMeta-object created from the input. * @throws XMPException If the file is not well-formed XML or if the parsing fails. */ public static XMPMeta parse(InputStream in, ParseOptions options) throws XMPException { return XMPMetaParser.parse(in, options); } /** * Parsing with default options. * * @param packet a String contain an XMP-file. * @return Returns the XMPMeta-object created from the input. * @throws XMPException If the file is not well-formed XML or if the parsing fails. * @see XMPMetaFactory#parse(InputStream) */ public static XMPMeta parseFromString(String packet) throws XMPException { return parseFromString(packet, null); } /** * Creates an XMPMeta-object from a string. * * @param packet a String contain an XMP-file. * @param options Options controlling the parsing. * @return Returns the XMPMeta-object created from the input. * @throws XMPException If the file is not well-formed XML or if the parsing fails. * @see XMPMetaFactory#parseFromString(String, ParseOptions) */ public static XMPMeta parseFromString(String packet, ParseOptions options) throws XMPException { return XMPMetaParser.parse(packet, options); } /** * Parsing with default options. * * @param buffer a String contain an XMP-file. * @return Returns the XMPMeta-object created from the input. * @throws XMPException If the file is not well-formed XML or if the parsing fails. * @see XMPMetaFactory#parseFromBuffer(byte[], ParseOptions) */ public static XMPMeta parseFromBuffer(byte[] buffer) throws XMPException { return parseFromBuffer(buffer, null); } /** * Creates an XMPMeta-object from a byte-buffer. * * @param buffer a String contain an XMP-file. * @param options Options controlling the parsing. * @return Returns the XMPMeta-object created from the input. * @throws XMPException If the file is not well-formed XML or if the parsing fails. * @see XMPMetaFactory#parse(InputStream, ParseOptions) */ public static XMPMeta parseFromBuffer(byte[] buffer, ParseOptions options) throws XMPException { return XMPMetaParser.parse(buffer, options); } /** * Serializes an XMPMeta-object as RDF into an OutputStream * with default options. * * @param xmp a metadata object * @param out an OutputStream to write the serialized RDF to. * @throws XMPException on serializsation errors. */ public static void serialize(XMPMeta xmp, OutputStream out) throws XMPException { serialize(xmp, out, null); } /** * Serializes an XMPMeta-object as RDF into an OutputStream. * * @param xmp a metadata object * @param options Options to control the serialization (see {@link SerializeOptions}). * @param out an OutputStream to write the serialized RDF to. * @throws XMPException on serializsation errors. */ public static void serialize(XMPMeta xmp, OutputStream out, SerializeOptions options) throws XMPException { assertImplementation(xmp); XMPSerializerHelper.serialize((XMPMetaImpl) xmp, out, options); } /** * Serializes an XMPMeta-object as RDF into a byte buffer. * * @param xmp a metadata object * @param options Options to control the serialization (see {@link SerializeOptions}). * @return Returns a byte buffer containing the serialized RDF. * @throws XMPException on serializsation errors. */ public static byte[] serializeToBuffer(XMPMeta xmp, SerializeOptions options) throws XMPException { assertImplementation(xmp); return XMPSerializerHelper.serializeToBuffer((XMPMetaImpl) xmp, options); } /** * Serializes an XMPMeta-object as RDF into a string. Note: Encoding * is ignored when serializing to a string. * * @param xmp a metadata object * @param options Options to control the serialization (see {@link SerializeOptions}). * @return Returns a string containing the serialized RDF. * @throws XMPException on serializsation errors. */ public static String serializeToString(XMPMeta xmp, SerializeOptions options) throws XMPException { assertImplementation(xmp); return XMPSerializerHelper.serializeToString((XMPMetaImpl) xmp, options); } /** * @param xmp Asserts that xmp is compatible to XMPMetaImpl.s */ private static void assertImplementation(XMPMeta xmp) { if (!(xmp instanceof XMPMetaImpl)) { throw new UnsupportedOperationException("The serializing service works only" + "with the XMPMeta implementation of this library"); } } /** * Resets the schema registry to its original state (creates a new one). * Be careful this might break all existing XMPMeta-objects and should be used * only for testing purpurses. */ public static void reset() { schema = new XMPSchemaRegistryImpl(); } /** * Obtain version information. The XMPVersionInfo singleton is created the first time * its requested. * * @return Returns the version information. */ public static synchronized XMPVersionInfo getVersionInfo() { if (versionInfo == null) { try { final int major = 5; final int minor = 1; final int micro = 0; final int engBuild = 3; final boolean debug = false; // Adobe XMP Core 5.0-jc001 DEBUG-., 2009 Jan 28 15:22:38-CET final String message = "Adobe XMP Core 5.1.0-jc003"; versionInfo = new XMPVersionInfo() { public int getMajor() { return major; } public int getMinor() { return minor; } public int getMicro() { return micro; } public boolean isDebug() { return debug; } public int getBuild() { return engBuild; } public String getMessage() { return message; } public String toString() { return message; } }; } catch (Throwable e) { // EMTPY, severe error would be detected during the tests System.out.println(e); } } return versionInfo; } }




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