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/*
* Store.java
*
* Copyright 2008 Mark Logic Corporation.
* Portions Copyright 2007 Sun Microsystems, Inc.
* All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common
* Development and Distribution License("CDDL") (collectively, the
* "License"). You may not use this file except in compliance with the
* License. You can obtain a copy of the License at
* https://xproc.dev.java.net/public/CDDL+GPL.html or
* docs/CDDL+GPL.txt in the distribution. See the License for the
* specific language governing permissions and limitations under the
* License. When distributing the software, include this License Header
* Notice in each file and include the License file at docs/CDDL+GPL.txt.
*/
package com.xmlcalabash.util;
import com.xmlcalabash.core.XProcConstants;
import com.xmlcalabash.core.XProcException;
import com.xmlcalabash.core.XProcRuntime;
import com.xmlcalabash.io.ReadablePipe;
import com.xmlcalabash.io.WritablePipe;
import com.xmlcalabash.library.DefaultStep;
import com.xmlcalabash.model.RuntimeValue;
import com.xmlcalabash.runtime.XAtomicStep;
import net.sf.saxon.s9api.QName;
import net.sf.saxon.s9api.SaxonApiException;
import net.sf.saxon.s9api.Serializer;
import net.sf.saxon.s9api.XdmNode;
import java.io.*;
import java.net.URI;
import java.net.URLConnection;
/**
*
* @author ndw
*/
public class NodeToBytes {
private static final QName _encoding = new QName("encoding");
private static final QName _content_type = new QName("content-type");
private static final QName c_encoding = new QName("c", XProcConstants.NS_XPROC_STEP, "encoding");
private static final QName c_body = new QName("c", XProcConstants.NS_XPROC_STEP, "body");
private static final QName c_json = new QName("c", XProcConstants.NS_XPROC_STEP, "json");
private static final QName cx_decode = new QName("cx", XProcConstants.NS_CALABASH_EX, "decode");
private NodeToBytes() {
// you aren't allowed to do this
}
public static byte[] convert(XProcRuntime runtime, XdmNode doc, boolean decode) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
XdmNode root = S9apiUtils.getDocumentElement(doc);
if (decode
&& ((XProcConstants.NS_XPROC_STEP.equals(root.getNodeName().getNamespaceURI())
&& "base64".equals(root.getAttributeValue(_encoding)))
|| ("".equals(root.getNodeName().getNamespaceURI())
&& "base64".equals(root.getAttributeValue(c_encoding))))) {
storeBinary(doc, stream);
} else if (runtime.transparentJSON()
&& (((c_body.equals(root.getNodeName())
&& ("application/json".equals(root.getAttributeValue(_content_type))
|| "text/json".equals(root.getAttributeValue(_content_type))))
|| c_json.equals(root.getNodeName()))
|| JSONtoXML.JSONX_NS.equals(root.getNodeName().getNamespaceURI())
|| JSONtoXML.JXML_NS.equals(root.getNodeName().getNamespaceURI())
|| JSONtoXML.MLJS_NS.equals(root.getNodeName().getNamespaceURI()))) {
storeJSON(doc, stream);
} else {
storeXML(runtime, doc, stream);
}
return stream.toByteArray();
}
private static void storeXML(XProcRuntime runtime, XdmNode doc, OutputStream stream) {
try {
try {
Serializer serializer = runtime.getProcessor().newSerializer();
serializer.setOutputProperty(Serializer.Property.ENCODING, "utf-8");
serializer.setOutputProperty(Serializer.Property.INDENT, "no");
serializer.setOutputProperty(Serializer.Property.OMIT_XML_DECLARATION, "yes");
serializer.setOutputProperty(Serializer.Property.METHOD, "xml");
serializer.setOutputStream(stream);
S9apiUtils.serialize(runtime, doc, serializer);
} finally {
stream.close();
}
} catch (IOException ioe) {
throw new XProcException("Failed to serialize as XML: " + doc, ioe);
} catch (SaxonApiException sae) {
throw new XProcException("Failed to serialize as XML: " + doc, sae);
}
}
private static void storeBinary(XdmNode doc, OutputStream stream) {
try {
try {
byte[] decoded = Base64.decode(doc.getStringValue());
stream.write(decoded);
} finally {
stream.close();
}
} catch (IOException ioe) {
throw new XProcException(ioe);
}
}
private static void storeJSON(XdmNode doc, OutputStream stream) {
try {
try {
PrintWriter writer = new PrintWriter(new OutputStreamWriter(stream, "UTF-8"));
String json = XMLtoJSON.convert(doc);
writer.print(json);
} finally {
// Closing both might not be safe, depending on the concrete
// implementation of OutputStream. Omitting the call to
// PrintWriter.close is safe, however.
// writer.close();
stream.close();
}
} catch (IOException ioe) {
throw XProcException.stepError(50, ioe);
}
}
}
