Start a Java version of a daml engine. So far, just the identity transform.

Even for something so completely trivial, this was a pain to write,
because some stupid XML catalog was distributed with a DOCTYPE
referencing a broken URL which could not be replaced by a local file
because the catalog engine was bootstrapping; nor did Xerces provide a
way, in org.apache.xerces.util.XMLCatalogResolver, to provide a
bootstrap resolver: so I had to partially rewrite XMLCatalogResolver.

1 files changed, 53 insertions, 0 deletions

diff --git a/org/madore/damlengine/DamlEngine.java b/org/madore/damlengine/DamlEngine.java
new file mode 100644
index 0000000..8571319
--- /dev/null
+++ b/org/madore/damlengine/DamlEngine.java
@@ -0,0 +1,53 @@
+package org.madore.damlengine;
+
+import org.w3c.dom.DOMImplementation;
+import org.w3c.dom.ls.DOMImplementationLS;
+import org.w3c.dom.ls.LSParser;
+import org.w3c.dom.ls.LSSerializer;
+import org.w3c.dom.ls.LSInput;
+import org.w3c.dom.ls.LSOutput;
+import org.w3c.dom.Document;
+import org.apache.xerces.dom.DOMImplementationSourceImpl;
+
+public final class DamlEngine {
+
+    private static Document doc;
+
+    private DamlEngine() { }  // Forbid instantiation
+
+    public static void processDocument() {
+	// ...
+    }
+
+    public static void main(String[] args) {
+
+	final Resolver resolver = new Resolver();
+	final DOMImplementationSourceImpl source
+	    = new DOMImplementationSourceImpl();
+	final DOMImplementation impl
+	    = source.getDOMImplementation("XML 3.0 Core 3.0 LS 3.0");
+	final DOMImplementationLS implLS = (DOMImplementationLS)impl;
+	final LSParser parser
+	    = implLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS,
+				    null);
+	parser.getDomConfig().setParameter("resource-resolver", resolver);
+	final LSSerializer writer = implLS.createLSSerializer();
+
+	if ( args.length == 0 ) {
+	    System.err.println("expecting filename as argument");
+	}
+
+	for (String fname : args) {
+	    final LSInput in = implLS.createLSInput();
+	    in.setSystemId(fname);
+	    doc = parser.parse(in);
+	    processDocument();
+	    final LSOutput out = implLS.createLSOutput();
+	    out.setByteStream(System.out);
+	    writer.write(doc, out);
+	    System.out.println("");
+	}
+
+    }
+
+}