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package org.madore.damlengine;
import java.util.MissingResourceException;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.BufferedReader;
import java.io.PrintStream;
import javax.xml.XMLConstants;
import javax.xml.namespace.NamespaceContext;
import org.w3c.dom.*;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSParser;
import org.w3c.dom.ls.LSInput;
import org.apache.xerces.dom.DOMImplementationSourceImpl;
import org.apache.xerces.xni.parser.XMLErrorHandler;
import org.apache.xerces.xni.parser.XMLParseException;
public final class DamlEngine {
public static final String XMLNS_NS = XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
public static final String XML_NS = XMLConstants.XML_NS_URI;
public static final String XHTML_NS = "http://www.w3.org/1999/xhtml";
public static final String DAML_NS = "http://www.madore.org/~david/NS/daml/";
public static final String RDF_NS = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
public static final String RSS10_NS = "http://purl.org/rss/1.0/";
public static final String DUBLINCORE_NS = "http://purl.org/dc/elements/1.1/";
public static final String SYNDICATION_NS = "http://purl.org/rss/1.0/modules/syndication/";
public static final class DamlNSMapping implements NamespaceContext {
// This is used for XPath resolution (_not_ for parsing the document).
public String getNamespaceURI(String prefix) {
if ( prefix == null )
throw new IllegalArgumentException("getNamespaceURI() called with null prefix");
else if ( prefix.equals("") )
return XHTML_NS;
else if ( prefix.equals("d") )
return DAML_NS;
else if ( prefix.equals("xml") )
return XML_NS;
else if ( prefix.equals("xmlns") )
return XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
else
return XMLConstants.NULL_NS_URI;
}
public String getPrefix(String uri) {
throw new UnsupportedOperationException("getPrefix() not implemented");
}
public java.util.Iterator<String> getPrefixes(String uri) {
throw new UnsupportedOperationException("getPrefixes() not implemented");
}
}
public static class SelectiveErrorHandler implements XMLErrorHandler {
public void warning(String domain, String key, XMLParseException exc) {
System.err.println("warning: line "+exc.getLineNumber()
+": "+exc.getMessage());
}
public void error(String domain, String key, XMLParseException exc) {
if ( domain.equals("http://www.w3.org/TR/1998/REC-xml-19980210")
&& key.equals("MSG_ELEMENT_NOT_DECLARED") )
return;
System.err.println("error: line "+exc.getLineNumber()
+": "+exc.getMessage());
}
public void fatalError(String domain, String key, XMLParseException exc) {
System.err.println("fatal error: line "+exc.getLineNumber()
+": "+exc.getMessage());
throw exc;
}
}
public static final class IncantDOM {
static DOMImplementation domi;
public static DOMImplementation getDOMI() {
if ( domi == null ) {
DOMImplementationSource source
= new DOMImplementationSourceImpl();
domi = source.getDOMImplementation("XML 3.0 Core 3.0 LS 3.0");
if ( domi == null )
throw new MissingResourceException("failed to obtain DOM implementation",
"org.w3c.dom.ls.DOMImplementationLS", "");
}
return domi;
}
}
private DamlEngine() { // Forbid instantiation
throw new AssertionError("DamlEngine cannot be instantiated");
}
public static class RootTodo extends TodoItem {
public RootTodo(Context ctx) {
super(ctx, null);
}
public void handle() {
TodoItem it
= TodoElement.getTodoElement(ctx.doc.getDocumentElement(),
ctx, this);
this.ownerDeque.registerAtEnd(it);
}
}
public static void processDocument(Document doc,
Context.WeblogSelectionContext wsc) {
TodoDeque todoDeque = new TodoDeque();
Context ctx = new Context(doc);
ctx.wsc = wsc;
todoDeque.registerAtEnd(new RootTodo(ctx));
todoDeque.dispatchLoop();
}
public static void processDocument(Document doc) {
processDocument(doc, null);
}
public static void fullProcess(InputStream in, OutputStream out,
Context.WeblogSelectionContext wsc)
throws Exception {
final DOMImplementationLS domils
= (DOMImplementationLS)(IncantDOM.getDOMI());
LSParser par
= domils.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);
par.getDomConfig().setParameter("resource-resolver", new Resolver());
par.getDomConfig().setParameter("http://xml.org/sax/features/validation", true);
par.getDomConfig().setParameter("http://xml.org/sax/features/namespaces", true);
par.getDomConfig().setParameter("http://apache.org/xml/properties/internal/error-handler", new SelectiveErrorHandler());
LSInput input = domils.createLSInput();
input.setByteStream(in);
Document doc = par.parse(input);
processDocument(doc, wsc);
doc.normalizeDocument();
Unparser unparser
= new Unparser(doc, new OutputStreamWriter(out, "UTF-8"),
"html");
unparser.unparse();
}
public static void fullProcess(InputStream in, OutputStream out)
throws Exception {
fullProcess(in, out, null);
}
public static void main(String[] args)
throws Exception {
BufferedReader buf = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));
String line;
Matcher matcher;
while ( ( line = buf.readLine() ) != null ) {
if ( Pattern.matches("^\\s+$", line) )
continue;
System.err.println(line);
if ( (matcher=Pattern.compile("process\\s+(\\S+)(?:\\s+\\>\\s*(\\S+))?\\s*").matcher(line)).matches() ) {
String inf = matcher.group(1);
String outf = matcher.group(2);
InputStream in = new FileInputStream(inf);
OutputStream out = (outf != null)
? new FileOutputStream(outf)
: System.out;
fullProcess(in, out);
if ( out != System.out )
out.close();
} else if ( (matcher=Pattern.compile("process-weblog-month\\s+(\\d{4})\\-(\\d{2})(?:\\s+\\>\\s*(\\S+))?\\s*").matcher(line)).matches() ) {
String year = matcher.group(1);
String month = matcher.group(2);
String outf = matcher.group(3);
OutputStream out = (outf != null)
? new FileOutputStream(outf)
: System.out;
WeblogSelect.fullProcess(new Context.WeblogMonthSelectionContext(year,month),
out);
if ( out != System.out )
out.close();
} else if ( (matcher=Pattern.compile("process-weblog-cat\\s+([a-z0-9\\-]+)(?:\\s+\\>\\s*(\\S+))?\\s*").matcher(line)).matches() ) {
String code = matcher.group(1);
String outf = matcher.group(2);
OutputStream out = (outf != null)
? new FileOutputStream(outf)
: System.out;
WeblogSelect.fullProcess(new Context.WeblogCategorySelectionContext(code),
out);
if ( out != System.out )
out.close();
} else if ( (matcher=Pattern.compile("process-weblog-recent\\s+(\\d+)(?:\\s+\\>\\s*(\\S+))?\\s*").matcher(line)).matches() ) {
int count = Integer.parseInt(matcher.group(1));
String outf = matcher.group(2);
OutputStream out = (outf != null)
? new FileOutputStream(outf)
: System.out;
WeblogSelect.fullProcess(new Context.WeblogRecentSelectionContext(count),
out);
} else if ( (matcher=Pattern.compile("process-weblog-index(?:\\s+\\>\\s*(\\S+))?\\s*").matcher(line)).matches() ) {
String outf = matcher.group(1);
OutputStream out = (outf != null)
? new FileOutputStream(outf)
: System.out;
WeblogIndexSelect.fullProcess(out);
if ( out != System.out )
out.close();
} else if ( (matcher=Pattern.compile("process-weblog-rss(?:\\s+\\>\\s*(\\S+))?\\s*").matcher(line)).matches() ) {
String outf = matcher.group(1);
OutputStream out = (outf != null)
? new FileOutputStream(outf)
: System.out;
WeblogRSS.fullProcess(out);
if ( out != System.out )
out.close();
} else if ( (matcher=Pattern.compile("populate-weblog\\s+(\\S+)\\s*").matcher(line)).matches() ) {
String inf = matcher.group(1);
InputStream in = new FileInputStream(inf);
WeblogPopulate.populate(in);
} else if ( (matcher=Pattern.compile("echo\\s+(\\S+)(?:\\s+\\>\\s*(\\S+))?\\s*").matcher(line)).matches() ) {
String str = matcher.group(1);
String outf = matcher.group(2);
OutputStream out = (outf != null)
? new FileOutputStream(outf)
: System.out;
new PrintStream(out, true).println(str);
if ( out != System.out )
out.close();
} else {
throw new IllegalArgumentException("couldn't understand command");
}
}
}
}
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