/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package xni;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import org.apache.xerces.parsers.XMLDocumentParser;
import org.apache.xerces.xni.Augmentations;
import org.apache.xerces.xni.NamespaceContext;
import org.apache.xerces.xni.QName;
import org.apache.xerces.xni.XMLAttributes;
import org.apache.xerces.xni.XMLLocator;
import org.apache.xerces.xni.XMLString;
import org.apache.xerces.xni.XNIException;
import org.apache.xerces.xni.parser.XMLConfigurationException;
import org.apache.xerces.xni.parser.XMLErrorHandler;
import org.apache.xerces.xni.parser.XMLInputSource;
import org.apache.xerces.xni.parser.XMLParseException;
import org.apache.xerces.xni.parser.XMLParserConfiguration;
import org.apache.xerces.xni.parser.XMLPullParserConfiguration;
/**
* A sample XNI writer. This sample program illustrates how to
* use the XNI XMLDocumentHandler callbacks in order to print a
* document that is parsed.
*
* @author Andy Clark, IBM
*
* @version $Id: Writer.java 447690 2006-09-19 02:41:53Z mrglavas $
*/
public class Writer
extends XMLDocumentParser
implements XMLErrorHandler {
//
// Constants
//
// feature ids
/** Namespaces feature id (http://xml.org/sax/features/namespaces). */
protected static final String NAMESPACES_FEATURE_ID =
"http://xml.org/sax/features/namespaces";
/** Validation feature id (http://xml.org/sax/features/validation). */
protected static final String VALIDATION_FEATURE_ID =
"http://xml.org/sax/features/validation";
/** Schema validation feature id (http://apache.org/xml/features/validation/schema). */
protected static final String SCHEMA_VALIDATION_FEATURE_ID =
"http://apache.org/xml/features/validation/schema";
/** Schema full checking feature id (http://apache.org/xml/features/validation/schema-full-checking). */
protected static final String SCHEMA_FULL_CHECKING_FEATURE_ID =
"http://apache.org/xml/features/validation/schema-full-checking";
/** Honour all schema locations feature id (http://apache.org/xml/features/honour-all-schemaLocations). */
protected static final String HONOUR_ALL_SCHEMA_LOCATIONS_ID =
"http://apache.org/xml/features/honour-all-schemaLocations";
// default settings
/** Default parser configuration (org.apache.xerces.parsers.XIncludeAwareParserConfiguration). */
protected static final String DEFAULT_PARSER_CONFIG =
"org.apache.xerces.parsers.XIncludeAwareParserConfiguration";
/** Default namespaces support (true). */
protected static final boolean DEFAULT_NAMESPACES = true;
/** Default validation support (false). */
protected static final boolean DEFAULT_VALIDATION = false;
/** Default Schema validation support (false). */
protected static final boolean DEFAULT_SCHEMA_VALIDATION = false;
/** Default Schema full checking support (false). */
protected static final boolean DEFAULT_SCHEMA_FULL_CHECKING = false;
/** Default honour all schema locations (false). */
protected static final boolean DEFAULT_HONOUR_ALL_SCHEMA_LOCATIONS = false;
/** Default canonical output (false). */
protected static final boolean DEFAULT_CANONICAL = false;
/** Default incremental mode (false). */
protected static final boolean DEFAULT_INCREMENTAL = false;
//
// Data
//
/** Print writer. */
protected PrintWriter fOut;
/** Canonical output. */
protected boolean fCanonical;
/** Element depth. */
protected int fElementDepth;
/** Seen root element. */
protected boolean fSeenRootElement;
//
// Constructors
//
/** Default constructor. */
public Writer(XMLParserConfiguration configuration) {
super(configuration);
fConfiguration.setErrorHandler(this);
} // <init>(XMLParserConfiguration)
//
// Public methods
//
/** Sets whether output is canonical. */
public void setCanonical(boolean canonical) {
fCanonical = canonical;
} // setCanonical(boolean)
/** Sets the output stream for printing. */
public void setOutput(OutputStream stream, String encoding)
throws UnsupportedEncodingException {
if (encoding == null) {
encoding = "UTF8";
}
java.io.Writer writer = new OutputStreamWriter(stream, encoding);
fOut = new PrintWriter(writer);
} // setOutput(OutputStream,String)
/** Sets the output writer. */
public void setOutput(java.io.Writer writer) {
fOut = writer instanceof PrintWriter
? (PrintWriter)writer : new PrintWriter(writer);
} // setOutput(java.io.Writer)
//
// XMLDocumentHandler methods
//
/** Start document. */
public void startDocument(XMLLocator locator, String encoding,
NamespaceContext namespaceContext, Augmentations augs)
throws XNIException {
fSeenRootElement = false;
fElementDepth = 0;
if (!fCanonical) {
fOut.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
fOut.flush();
}
} // startDocument(XMLLocator,String,NamespaceContext, Augmentations)
/** Start element. */
public void startElement(QName element, XMLAttributes attrs, Augmentations augs)
throws XNIException {
fSeenRootElement = true;
fElementDepth++;
fOut.print('<');
fOut.print(element.rawname);
if (attrs != null) {
/***
attrs = sortAttributes(attrs);
/***/
int len = attrs.getLength();
for (int i = 0; i < len; i++) {
fOut.print(' ');
fOut.print(attrs.getQName(i));
fOut.print("=\"");
normalizeAndPrint(attrs.getValue(i));
fOut.print('"');
}
}
fOut.print('>');
fOut.flush();
} // startElement(QName,XMLAttributes,Augmentations)
/** Empty element. */
public void emptyElement(QName element, XMLAttributes attrs, Augmentations augs)
throws XNIException {
fSeenRootElement = true;
fElementDepth++;
fOut.print('<');
fOut.print(element.rawname);
if (attrs != null) {
/***
attrs = sortAttributes(attrs);
/***/
int len = attrs.getLength();
for (int i = 0; i < len; i++) {
fOut.print(' ');
fOut.print(attrs.getQName(i));
fOut.print("=\"");
normalizeAndPrint(attrs.getValue(i));
fOut.print('"');
}
}
fOut.print("/>");
fOut.flush();
} // emptyElement(QName,XMLAttributes,Augmentations)
/** Processing instruction. */
public void processingInstruction(String target, XMLString data, Augmentations augs)
throws XNIException {
if (fSeenRootElement) {
fOut.print('\n');
}
fOut.print("<?");
fOut.print(target);
if (data != null && data.length > 0) {
fOut.print(' ');
fOut.print(data.toString());
}
fOut.print("?>");
if (!fSeenRootElement) {
fOut.print('\n');
}
fOut.flush();
} // processingInstruction(String,XMLString,Augmentations)
/** Comment. */
public void comment(XMLString text, Augmentations augs) throws XNIException {
if (!fCanonical) {
if (fSeenRootElement && fElementDepth == 0) {
fOut.print('\n');
}
fOut.print("<!--");
fOut.print(text.toString());
fOut.print("-->");
if (!fSeenRootElement) {
fOut.print('\n');
}
fOut.flush();
}
} // comment(XMLString,Augmentations)
/** Characters. */
public void characters(XMLString text, Augmentations augs) throws XNIException {
normalizeAndPrint(text);
//fOut.println("one call...");
fOut.flush();
} // characters(XMLString,Augmentations)
/** Ignorable whitespace. */
public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException {
characters(text, augs);
fOut.flush();
} // ignorableWhitespace(XMLString,Augmentations)
/** End element. */
public void endElement(QName element, Augmentations augs) throws XNIException {
fElementDepth--;
fOut.print("</");
fOut.print(element.rawname);
fOut.print('>');
fOut.flush();
} // endElement(QName,Augmentations)
/** Start CDATA section. */
public void startCDATA(Augmentations augs) throws XNIException {
} // startCDATA(Augmentations)
/** End CDATA section. */
public void endCDATA(Augmentations augs) throws XNIException {
} // endCDATA(Augmentations)
//
// XMLDTDHandler methods
//
//
// XMLErrorHandler methods
//
/** Warning. */
public void warning(String domain, String key, XMLParseException ex)
throws XNIException {
printError("Warning", ex);
} // warning(String,String,XMLParseException)
/** Error. */
public void error(String domain, String key, XMLParseException ex)
throws XNIException {
printError("Error", ex);
} // error(String,String,XMLParseException)
/** Fatal error. */
public void fatalError(String domain, String key, XMLParseException ex)
throws XNIException {
printError("Fatal Error", ex);
throw ex;
} // fatalError(String,String,XMLParseException)
//
// Protected methods
//
/** Returns a sorted list of attributes. */
/***
protected XMLAttributes sortAttributes(XMLAttributes attrs) {
XMLAttributesImpl attributes = new XMLAttributesImpl();
int len = (attrs != null) ? attrs.getLength() : 0;
for (int i = 0; i < len; i++) {
String name = attrs.getQName(i);
int count = attributes.getLength();
int j = 0;
while (j < count) {
if (name.compareTo(attributes.getQName(j)) < 0) {
break;
}
j++;
}
attributes.insertAttributeAt(j, name, attrs.getType(i),
attrs.getValue(i));
}
return attributes;
} // sortAttributes(XMLAttributeList):XMLAttributeList
/***/
/** Normalizes and prints the given string. */
protected void normalizeAndPrint(String s) {
int len = (s != null) ? s.length() : 0;
for (int i = 0; i < len; i++) {
char c = s.charAt(i);
normalizeAndPrint(c);
}
} // normalizeAndPrint(String)
/** Normalizes and prints the given array of characters. */
protected void normalizeAndPrint(XMLString text) {
for (int i = 0; i < text.length; i++) {
normalizeAndPrint(text.ch[text.offset + i]);
}
} // normalizeAndPrint(XMLString)
/** Normalizes and print the given character. */
protected void normalizeAndPrint(char c) {
switch (c) {
case '<': {
fOut.print("<");
break;
}
case '>': {
fOut.print(">");
break;
}
case '&': {
fOut.print("&");
break;
}
case '"': {
fOut.print(""");
break;
}
case '\r':
case '\n': {
if (fCanonical) {
fOut.print("&#");
fOut.print(Integer.toString(c));
fOut.print(';');
break;
}
// else, default print char
}
default: {
fOut.print(c);
}
}
} // normalizeAndPrint(char)
/** Prints the error message. */
protected void printError(String type, XMLParseException ex) {
System.err.print("[");
System.err.print(type);
System.err.print("] ");
String systemId = ex.getExpandedSystemId();
if (systemId != null) {
int index = systemId.lastIndexOf('/');
if (index != -1)
systemId = systemId.substring(index + 1);
System.err.print(systemId);
}
System.err.print(':');
System.err.print(ex.getLineNumber());
System.err.print(':');
System.err.print(ex.getColumnNumber());
System.err.print(": ");
System.err.print(ex.getMessage());
System.err.println();
System.err.flush();
} // printError(String,XMLParseException)
//
// Main
//
/** Main program entry point. */
public static void main(String argv[]) {
// is there anything to do?
if (argv.length == 0) {
printUsage();
System.exit(1);
}
// variables
Writer writer = null;
XMLParserConfiguration parserConfig = null;
boolean namespaces = DEFAULT_NAMESPACES;
boolean validation = DEFAULT_VALIDATION;
boolean schemaValidation = DEFAULT_SCHEMA_VALIDATION;
boolean schemaFullChecking = DEFAULT_SCHEMA_FULL_CHECKING;
boolean honourAllSchemaLocations = DEFAULT_HONOUR_ALL_SCHEMA_LOCATIONS;
boolean canonical = DEFAULT_CANONICAL;
boolean incremental = DEFAULT_INCREMENTAL;
// process arguments
for (int i = 0; i < argv.length; i++) {
String arg = argv[i];
if (arg.startsWith("-")) {
String option = arg.substring(1);
if (option.equals("p")) {
// get parser name
if (++i == argv.length) {
System.err.println("error: Missing argument to -p option.");
}
String parserName = argv[i];
// create parser
try {
parserConfig = (XMLParserConfiguration)ObjectFactory.newInstance(parserName,
ObjectFactory.findClassLoader(), true);
/***
parserConfig.addRecognizedFeatures(new String[] {
NAMESPACE_PREFIXES_FEATURE_ID,
});
/***/
writer = null;
}
catch (Exception e) {
parserConfig = null;
System.err.println("error: Unable to instantiate parser configuration ("+parserName+")");
e.printStackTrace(System.err);
}
continue;
}
if (option.equalsIgnoreCase("n")) {
namespaces = option.equals("n");
continue;
}
if (option.equalsIgnoreCase("v")) {
validation = option.equals("v");
continue;
}
if (option.equalsIgnoreCase("s")) {
schemaValidation = option.equals("s");
continue;
}
if (option.equalsIgnoreCase("f")) {
schemaFullChecking = option.equals("f");
continue;
}
if (option.equalsIgnoreCase("hs")) {
honourAllSchemaLocations = option.equals("hs");
continue;
}
if (option.equalsIgnoreCase("c")) {
canonical = option.equals("c");
continue;
}
if (option.equalsIgnoreCase("i")) {
incremental = option.equals("i");
continue;
}
if (option.equals("h")) {
printUsage();
continue;
}
}
// use default parser?
if (parserConfig == null) {
// create parser
try {
parserConfig = (XMLParserConfiguration)ObjectFactory.newInstance(DEFAULT_PARSER_CONFIG,
ObjectFactory.findClassLoader(), true);
/***
parserConfig.addRecognizedFeatures(new String[] {
NAMESPACE_PREFIXES_FEATURE_ID,
});
/***/
}
catch (Exception e) {
System.err.println("error: Unable to instantiate parser configuration ("+DEFAULT_PARSER_CONFIG+")");
e.printStackTrace(System.err);
continue;
}
}
// set parser features
if (writer == null) {
writer = new Writer(parserConfig);
}
try {
parserConfig.setFeature(NAMESPACES_FEATURE_ID, namespaces);
}
catch (XMLConfigurationException e) {
System.err.println("warning: Parser does not support feature ("+NAMESPACES_FEATURE_ID+")");
}
try {
parserConfig.setFeature(VALIDATION_FEATURE_ID, validation);
}
catch (XMLConfigurationException e) {
System.err.println("warning: Parser does not support feature ("+VALIDATION_FEATURE_ID+")");
}
try {
parserConfig.setFeature(SCHEMA_VALIDATION_FEATURE_ID, schemaValidation);
}
catch (XMLConfigurationException e) {
if (e.getType() == XMLConfigurationException.NOT_SUPPORTED) {
System.err.println("warning: Parser does not support feature ("+SCHEMA_VALIDATION_FEATURE_ID+")");
}
}
try {
parserConfig.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, schemaFullChecking);
}
catch (XMLConfigurationException e) {
if (e.getType() == XMLConfigurationException.NOT_SUPPORTED) {
System.err.println("warning: Parser does not support feature ("+SCHEMA_FULL_CHECKING_FEATURE_ID+")");
}
}
try {
parserConfig.setFeature(HONOUR_ALL_SCHEMA_LOCATIONS_ID, honourAllSchemaLocations);
}
catch (XMLConfigurationException e) {
if (e.getType() == XMLConfigurationException.NOT_SUPPORTED) {
System.err.println("warning: Parser does not support feature ("+HONOUR_ALL_SCHEMA_LOCATIONS_ID+")");
}
}
// parse file
try {
writer.setOutput(System.out, "UTF8");
}
catch (UnsupportedEncodingException e) {
System.err.println("error: Unable to set output. Exiting.");
System.exit(1);
}
writer.setCanonical(canonical);
try {
if (incremental && parserConfig instanceof XMLPullParserConfiguration) {
XMLPullParserConfiguration pullParserConfig = (XMLPullParserConfiguration)parserConfig;
pullParserConfig.setInputSource(new XMLInputSource(null, arg, null));
int step = 1;
do {
//System.err.println("# step "+step++);
} while (pullParserConfig.parse(false));
}
else {
writer.parse(new XMLInputSource(null, arg, null));
}
}
catch (XMLParseException e) {
// ignore
}
catch (Exception e) {
System.err.println("error: Parse error occurred - "+e.getMessage());
if (e instanceof XNIException) {
e = ((XNIException)e).getException();
}
e.printStackTrace(System.err);
}
}
} // main(String[])
//
// Private static methods
//
/** Prints the usage. */
private static void printUsage() {
System.err.println("usage: java sax.Writer (options) uri ...");
System.err.println();
System.err.println("options:");
System.err.println(" -p name Select parser configuration by name.");
System.err.println(" -n | -N Turn on/off namespace processing.");
System.err.println(" -v | -V Turn on/off validation.");
System.err.println(" -s | -S Turn on/off Schema validation support.");
System.err.println(" NOTE: Not supported by all parsers.");
System.err.println(" -f | -F Turn on/off Schema full checking.");
System.err.println(" NOTE: Requires use of -s and not supported by all parsers.");
System.err.println(" -hs | -HS Turn on/off honouring of all schema locations.");
System.err.println(" NOTE: Requires use of -s and not supported by all parsers.");
/***
System.err.println(" -c | -C Turn on/off Canonical XML output.");
System.err.println(" NOTE: This is not W3C canonical output.");
/***/
System.err.println(" -i | -I Incremental mode.");
System.err.println(" NOTE: This feature only works if the configuration used");
System.err.println(" implements XMLPullParserConfiguration.");
System.err.println(" -h This help screen.");
System.err.println();
System.err.println("defaults:");
System.err.println(" Config: "+DEFAULT_PARSER_CONFIG);
System.err.print(" Namespaces: ");
System.err.println(DEFAULT_NAMESPACES ? "on" : "off");
System.err.print(" Validation: ");
System.err.println(DEFAULT_VALIDATION ? "on" : "off");
System.err.print(" Schema: ");
System.err.println(DEFAULT_SCHEMA_VALIDATION ? "on" : "off");
System.err.print(" Schema full checking: ");
System.err.println(DEFAULT_SCHEMA_FULL_CHECKING ? "on" : "off");
System.err.print(" Honour all schema locations: ");
System.err.println(DEFAULT_HONOUR_ALL_SCHEMA_LOCATIONS ? "on" : "off");
/***
System.err.print(" Canonical: ");
System.err.println(DEFAULT_CANONICAL ? "on" : "off");
/***/
System.err.print(" Incremental: ");
System.err.println(DEFAULT_INCREMENTAL ? "on" : "off");
} // printUsage()
} // class Writer