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iText, a free Java-PDF library
//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
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (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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