bundles/org.eclipse.uomo.ucum/src/main/java/org/eclipse/uomo/ucum/parsers/DefinitionParser.java - osbp/org.eclipse.osbp.fork.uomo - Git at Google

 /*******************************************************************************
  * Crown Copyright (c) 2006, 2012, Copyright (c) 2006, 2008 Kestral Computing P/L.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *    Kestral Computing P/L - initial implementation
  *    Werner Keil - added static imports
  *******************************************************************************/

 package org.eclipse.uomo.ucum.parsers;

 import static org.eclipse.uomo.ucum.model.ConceptKind.*;
 import static org.xmlpull.v1.XmlPullParser.*;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.math.BigDecimal;
 import java.text.ParseException;
 import java.util.Date;

 import org.apache.commons.lang.StringUtils;
 import org.eclipse.uomo.core.UOMoException;
 import org.eclipse.uomo.ucum.internal.Messages;
 import org.eclipse.uomo.ucum.model.BaseUnit;
 import org.eclipse.uomo.ucum.model.DefinedUnit;
 import org.eclipse.uomo.ucum.model.Prefix;
 import org.eclipse.uomo.ucum.model.UcumModel;
 import org.eclipse.uomo.ucum.model.Value;
 import org.eclipse.uomo.util.Parser;
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 import org.xmlpull.v1.XmlPullParserFactory;

 import com.ibm.icu.text.DateFormat;
 import com.ibm.icu.text.SimpleDateFormat;


 /**
  * Parses the file ucum-essense.xml
  *
  * @author Grahame Grieve
  * @author Werner Keil
  */

 public class DefinitionParser implements Parser<String, UcumModel> {

 	public UcumModel parse(String filename) throws UOMoException {
 		try {
 			return parse(new FileInputStream(new File(filename)));
 		} catch (XmlPullParserException x) {
 			throw new UOMoException(x);
 		}  catch (ParseException p) {
 			throw new UOMoException(p);
 		}  catch (IOException i) {
 			throw new UOMoException(i);
 		}
 	}

 	public UcumModel parse(InputStream stream) throws XmlPullParserException, IOException, ParseException {
 		XmlPullParserFactory factory = XmlPullParserFactory.newInstance(
 				System.getProperty(XmlPullParserFactory.PROPERTY_NAME), null);
 		factory.setNamespaceAware(true);
 		XmlPullParser xpp = factory.newPullParser();

 		xpp.setInput(stream, null);

         int eventType = xpp.next();
         if (eventType != START_TAG)
         	throw new XmlPullParserException(Messages.DefinitionParser_0);
         if (!xpp.getName().equals("root"))  //$NON-NLS-1$
         	throw new XmlPullParserException(Messages.DefinitionParser_2+xpp.getName()+Messages.DefinitionParser_3);
         final DateFormat fmt = new SimpleDateFormat(Messages.DefinitionParser_DateFormat);
         Date date = fmt.parse(xpp.getAttributeValue(null, "revision-date").substring(7, 32));         //$NON-NLS-1$
 		UcumModel root = new UcumModel(xpp.getAttributeValue(null, "version"), xpp.getAttributeValue(null, "revision"), date); //$NON-NLS-1$ //$NON-NLS-2$
         xpp.next();
 		while (xpp.getEventType() != END_TAG) {
 			if (xpp.getEventType() == TEXT) {
 				if (StringUtils.isWhitespace(xpp.getText()))
 					xpp.next();
 				else
 					throw new XmlPullParserException(Messages.DefinitionParser_8+xpp.getText());
 			} else if (xpp.getName().equals(PREFIX.visibleName()))
 				root.getPrefixes().add(parsePrefix(xpp));
 			else if (xpp.getName().equals(BASEUNIT.visibleName()))
 				root.getBaseUnits().add(parseBaseUnit(xpp));
 			else if (xpp.getName().equals(UNIT.visibleName()))
 				root.getDefinedUnits().add(parseUnit(xpp));
 			else
 				throw new XmlPullParserException(Messages.DefinitionParser_9+xpp.getName());
 		}
 		return root;
 	}

 	private DefinedUnit parseUnit(XmlPullParser xpp) throws XmlPullParserException, IOException {
 		DefinedUnit unit = new DefinedUnit(xpp.getAttributeValue(null, "Code"), xpp.getAttributeValue(null, "CODE")); //$NON-NLS-1$ //$NON-NLS-2$
 		unit.setMetric("yes".equals(xpp.getAttributeValue(null, "isMetric"))); //$NON-NLS-1$ //$NON-NLS-2$
 		unit.setSpecial("yes".equals(xpp.getAttributeValue(null, "isSpecial"))); //$NON-NLS-1$ //$NON-NLS-2$
 		unit.setClass_(xpp.getAttributeValue(null, "class")); //$NON-NLS-1$
 		xpp.next();
 		skipWhitespace(xpp);
 		while (xpp.getEventType() == START_TAG && "name".equals(xpp.getName())) //$NON-NLS-1$
 			unit.getNames().add(readElement(xpp, "name", UNIT.visibleName()+" "+unit.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
 		if (xpp.getEventType() == START_TAG && "printSymbol".equals(xpp.getName())) //$NON-NLS-1$
 			unit.setPrintSymbol(readElement(xpp, "printSymbol", UNIT.visibleName()+" "+unit.getCode(), true)); //$NON-NLS-1$ //$NON-NLS-2$
 		unit.setProperty(readElement(xpp, "property", UNIT.visibleName()+" "+unit.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
 		unit.setValue(parseValue(xpp, "unit "+unit.getCode())); //$NON-NLS-1$
 		xpp.next();
 		skipWhitespace(xpp);
 		return unit;
 	}

 	private Value<?> parseValue(XmlPullParser xpp, String context) throws XmlPullParserException, IOException {
 		checkAtElement(xpp, "value", context); //$NON-NLS-1$
 		BigDecimal val = null;
 		if (xpp.getAttributeValue(null, "value") != null)  //$NON-NLS-1$
 		try {
 			val = new BigDecimal(xpp.getAttributeValue(null, "value")); //$NON-NLS-1$
 		} catch (NumberFormatException e) {
 			throw new XmlPullParserException(Messages.DefinitionParser_29+context+Messages.DefinitionParser_30+e.getMessage());
 		}
 		@SuppressWarnings("rawtypes")
 		Value<?> value = new Value(xpp.getAttributeValue(null, "Unit"), xpp.getAttributeValue(null, "UNIT"), val); //$NON-NLS-1$ //$NON-NLS-2$
 		value.setText(readElement(xpp, "value", context, true)); //$NON-NLS-1$
 		return value;
 	}

 	private BaseUnit parseBaseUnit(XmlPullParser xpp) throws XmlPullParserException, IOException {
 		BaseUnit base = new BaseUnit(xpp.getAttributeValue(null, "Code"), xpp.getAttributeValue(null, "CODE")); //$NON-NLS-1$ //$NON-NLS-2$
 		base.setDim(xpp.getAttributeValue(null, "dim").charAt(0)); //$NON-NLS-1$
 		xpp.next();
 		skipWhitespace(xpp);
 		base.getNames().add(readElement(xpp, "name", BASEUNIT.visibleName()+" "+base.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
 		base.setPrintSymbol(readElement(xpp, "printSymbol", BASEUNIT.visibleName()+" "+base.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
 		base.setProperty(readElement(xpp, "property", BASEUNIT.visibleName()+" "+base.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
 		xpp.next();
 		skipWhitespace(xpp);
 		return base;
 	}

 	private Prefix parsePrefix(XmlPullParser xpp) throws XmlPullParserException, IOException {
 		Prefix prefix = new Prefix(xpp.getAttributeValue(null, "Code"), xpp.getAttributeValue(null, "CODE")); //$NON-NLS-1$ //$NON-NLS-2$
 		xpp.next();
 		skipWhitespace(xpp);
 		prefix.getNames().add(readElement(xpp, "name", PREFIX.visibleName()+" "+prefix.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
 		prefix.setPrintSymbol(readElement(xpp, "printSymbol", PREFIX.visibleName()+" "+prefix.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
 		checkAtElement(xpp, "value", PREFIX.visibleName()+" "+prefix.getCode()); //$NON-NLS-1$ //$NON-NLS-2$
 		prefix.setValue(new BigDecimal(xpp.getAttributeValue(null, "value"))); //$NON-NLS-1$
 		readElement(xpp, "value", PREFIX.visibleName()+" "+prefix.getCode(), true); //$NON-NLS-1$ //$NON-NLS-2$
 		xpp.next();
 		skipWhitespace(xpp);
 		return prefix;
 	}

 	private String readElement(XmlPullParser xpp, String name, String context, boolean complex) throws XmlPullParserException, IOException {
 		checkAtElement(xpp, name, context);
 		xpp.next();
 		skipWhitespace(xpp);
 		String val = null;
 		if (complex) {
 			val = readText(xpp);
 		} else if (xpp.getEventType() == TEXT) {
 			val = xpp.getText();
 			xpp.next();
 			skipWhitespace(xpp);
 		}
 		if (xpp.getEventType() != END_TAG) {
 			throw new XmlPullParserException(Messages.DefinitionParser_54+context);
 		}
 		xpp.next();
 		skipWhitespace(xpp);
 		return val;
 	}

 	private String readText(XmlPullParser xpp) throws XmlPullParserException, IOException {
 		StringBuilder bldr = new StringBuilder();
 		while (xpp.getEventType() != END_TAG) {
 			if (xpp.getEventType() == TEXT) {
 				bldr.append(xpp.getText());
 				xpp.next();
 			} else {
 				xpp.next();
 				bldr.append(readText(xpp));
 				xpp.next();
 				skipWhitespace(xpp);
 			}
 		}
 		return bldr.toString();
 	}

 	private void skipWhitespace(XmlPullParser xpp) throws XmlPullParserException, IOException {
 		while (xpp.getEventType() == TEXT && StringUtils.isWhitespace(xpp.getText()))
 			xpp.next();
 	}

 	private void checkAtElement(XmlPullParser xpp, String name, String context) throws XmlPullParserException {
 		if (xpp.getEventType() != START_TAG)
 			throw new XmlPullParserException(Messages.DefinitionParser_55+name+Messages.DefinitionParser_56+Integer.toString(xpp.getEventType())+Messages.DefinitionParser_57+context);
 		if (!xpp.getName().equals(name))
 			throw new XmlPullParserException(Messages.DefinitionParser_58+name+Messages.DefinitionParser_59+xpp.getName()+Messages.DefinitionParser_60+context);
 	}
 }
	/*******************************************************************************
	* Crown Copyright (c) 2006, 2012, Copyright (c) 2006, 2008 Kestral Computing P/L.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Kestral Computing P/L - initial implementation
	* Werner Keil - added static imports
	*******************************************************************************/

	package org.eclipse.uomo.ucum.parsers;

	import static org.eclipse.uomo.ucum.model.ConceptKind.*;
	import static org.xmlpull.v1.XmlPullParser.*;

	import java.io.File;
	import java.io.FileInputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.math.BigDecimal;
	import java.text.ParseException;
	import java.util.Date;

	import org.apache.commons.lang.StringUtils;
	import org.eclipse.uomo.core.UOMoException;
	import org.eclipse.uomo.ucum.internal.Messages;
	import org.eclipse.uomo.ucum.model.BaseUnit;
	import org.eclipse.uomo.ucum.model.DefinedUnit;
	import org.eclipse.uomo.ucum.model.Prefix;
	import org.eclipse.uomo.ucum.model.UcumModel;
	import org.eclipse.uomo.ucum.model.Value;
	import org.eclipse.uomo.util.Parser;
	import org.xmlpull.v1.XmlPullParser;
	import org.xmlpull.v1.XmlPullParserException;
	import org.xmlpull.v1.XmlPullParserFactory;

	import com.ibm.icu.text.DateFormat;
	import com.ibm.icu.text.SimpleDateFormat;


	/**
	* Parses the file ucum-essense.xml
	*
	* @author Grahame Grieve
	* @author Werner Keil
	*/

	public class DefinitionParser implements Parser<String, UcumModel> {

	public UcumModel parse(String filename) throws UOMoException {
	try {
	return parse(new FileInputStream(new File(filename)));
	} catch (XmlPullParserException x) {
	throw new UOMoException(x);
	} catch (ParseException p) {
	throw new UOMoException(p);
	} catch (IOException i) {
	throw new UOMoException(i);
	}
	}

	public UcumModel parse(InputStream stream) throws XmlPullParserException, IOException, ParseException {
	XmlPullParserFactory factory = XmlPullParserFactory.newInstance(
	System.getProperty(XmlPullParserFactory.PROPERTY_NAME), null);
	factory.setNamespaceAware(true);
	XmlPullParser xpp = factory.newPullParser();

	xpp.setInput(stream, null);

	int eventType = xpp.next();
	if (eventType != START_TAG)
	throw new XmlPullParserException(Messages.DefinitionParser_0);
	if (!xpp.getName().equals("root")) //$NON-NLS-1$
	throw new XmlPullParserException(Messages.DefinitionParser_2+xpp.getName()+Messages.DefinitionParser_3);
	final DateFormat fmt = new SimpleDateFormat(Messages.DefinitionParser_DateFormat);
	Date date = fmt.parse(xpp.getAttributeValue(null, "revision-date").substring(7, 32)); //$NON-NLS-1$
	UcumModel root = new UcumModel(xpp.getAttributeValue(null, "version"), xpp.getAttributeValue(null, "revision"), date); //$NON-NLS-1$ //$NON-NLS-2$
	xpp.next();
	while (xpp.getEventType() != END_TAG) {
	if (xpp.getEventType() == TEXT) {
	if (StringUtils.isWhitespace(xpp.getText()))
	xpp.next();
	else
	throw new XmlPullParserException(Messages.DefinitionParser_8+xpp.getText());
	} else if (xpp.getName().equals(PREFIX.visibleName()))
	root.getPrefixes().add(parsePrefix(xpp));
	else if (xpp.getName().equals(BASEUNIT.visibleName()))
	root.getBaseUnits().add(parseBaseUnit(xpp));
	else if (xpp.getName().equals(UNIT.visibleName()))
	root.getDefinedUnits().add(parseUnit(xpp));
	else
	throw new XmlPullParserException(Messages.DefinitionParser_9+xpp.getName());
	}
	return root;
	}

	private DefinedUnit parseUnit(XmlPullParser xpp) throws XmlPullParserException, IOException {
	DefinedUnit unit = new DefinedUnit(xpp.getAttributeValue(null, "Code"), xpp.getAttributeValue(null, "CODE")); //$NON-NLS-1$ //$NON-NLS-2$
	unit.setMetric("yes".equals(xpp.getAttributeValue(null, "isMetric"))); //$NON-NLS-1$ //$NON-NLS-2$
	unit.setSpecial("yes".equals(xpp.getAttributeValue(null, "isSpecial"))); //$NON-NLS-1$ //$NON-NLS-2$
	unit.setClass_(xpp.getAttributeValue(null, "class")); //$NON-NLS-1$
	xpp.next();
	skipWhitespace(xpp);
	while (xpp.getEventType() == START_TAG && "name".equals(xpp.getName())) //$NON-NLS-1$
	unit.getNames().add(readElement(xpp, "name", UNIT.visibleName()+" "+unit.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
	if (xpp.getEventType() == START_TAG && "printSymbol".equals(xpp.getName())) //$NON-NLS-1$
	unit.setPrintSymbol(readElement(xpp, "printSymbol", UNIT.visibleName()+" "+unit.getCode(), true)); //$NON-NLS-1$ //$NON-NLS-2$
	unit.setProperty(readElement(xpp, "property", UNIT.visibleName()+" "+unit.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
	unit.setValue(parseValue(xpp, "unit "+unit.getCode())); //$NON-NLS-1$
	xpp.next();
	skipWhitespace(xpp);
	return unit;
	}

	private Value<?> parseValue(XmlPullParser xpp, String context) throws XmlPullParserException, IOException {
	checkAtElement(xpp, "value", context); //$NON-NLS-1$
	BigDecimal val = null;
	if (xpp.getAttributeValue(null, "value") != null) //$NON-NLS-1$
	try {
	val = new BigDecimal(xpp.getAttributeValue(null, "value")); //$NON-NLS-1$
	} catch (NumberFormatException e) {
	throw new XmlPullParserException(Messages.DefinitionParser_29+context+Messages.DefinitionParser_30+e.getMessage());
	}
	@SuppressWarnings("rawtypes")
	Value<?> value = new Value(xpp.getAttributeValue(null, "Unit"), xpp.getAttributeValue(null, "UNIT"), val); //$NON-NLS-1$ //$NON-NLS-2$
	value.setText(readElement(xpp, "value", context, true)); //$NON-NLS-1$
	return value;
	}

	private BaseUnit parseBaseUnit(XmlPullParser xpp) throws XmlPullParserException, IOException {
	BaseUnit base = new BaseUnit(xpp.getAttributeValue(null, "Code"), xpp.getAttributeValue(null, "CODE")); //$NON-NLS-1$ //$NON-NLS-2$
	base.setDim(xpp.getAttributeValue(null, "dim").charAt(0)); //$NON-NLS-1$
	xpp.next();
	skipWhitespace(xpp);
	base.getNames().add(readElement(xpp, "name", BASEUNIT.visibleName()+" "+base.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
	base.setPrintSymbol(readElement(xpp, "printSymbol", BASEUNIT.visibleName()+" "+base.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
	base.setProperty(readElement(xpp, "property", BASEUNIT.visibleName()+" "+base.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
	xpp.next();
	skipWhitespace(xpp);
	return base;
	}

	private Prefix parsePrefix(XmlPullParser xpp) throws XmlPullParserException, IOException {
	Prefix prefix = new Prefix(xpp.getAttributeValue(null, "Code"), xpp.getAttributeValue(null, "CODE")); //$NON-NLS-1$ //$NON-NLS-2$
	xpp.next();
	skipWhitespace(xpp);
	prefix.getNames().add(readElement(xpp, "name", PREFIX.visibleName()+" "+prefix.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
	prefix.setPrintSymbol(readElement(xpp, "printSymbol", PREFIX.visibleName()+" "+prefix.getCode(), false)); //$NON-NLS-1$ //$NON-NLS-2$
	checkAtElement(xpp, "value", PREFIX.visibleName()+" "+prefix.getCode()); //$NON-NLS-1$ //$NON-NLS-2$
	prefix.setValue(new BigDecimal(xpp.getAttributeValue(null, "value"))); //$NON-NLS-1$
	readElement(xpp, "value", PREFIX.visibleName()+" "+prefix.getCode(), true); //$NON-NLS-1$ //$NON-NLS-2$
	xpp.next();
	skipWhitespace(xpp);
	return prefix;
	}

	private String readElement(XmlPullParser xpp, String name, String context, boolean complex) throws XmlPullParserException, IOException {
	checkAtElement(xpp, name, context);
	xpp.next();
	skipWhitespace(xpp);
	String val = null;
	if (complex) {
	val = readText(xpp);
	} else if (xpp.getEventType() == TEXT) {
	val = xpp.getText();
	xpp.next();
	skipWhitespace(xpp);
	}
	if (xpp.getEventType() != END_TAG) {
	throw new XmlPullParserException(Messages.DefinitionParser_54+context);
	}
	xpp.next();
	skipWhitespace(xpp);
	return val;
	}

	private String readText(XmlPullParser xpp) throws XmlPullParserException, IOException {
	StringBuilder bldr = new StringBuilder();
	while (xpp.getEventType() != END_TAG) {
	if (xpp.getEventType() == TEXT) {
	bldr.append(xpp.getText());
	xpp.next();
	} else {
	xpp.next();
	bldr.append(readText(xpp));
	xpp.next();
	skipWhitespace(xpp);
	}
	}
	return bldr.toString();
	}

	private void skipWhitespace(XmlPullParser xpp) throws XmlPullParserException, IOException {
	while (xpp.getEventType() == TEXT && StringUtils.isWhitespace(xpp.getText()))
	xpp.next();
	}

	private void checkAtElement(XmlPullParser xpp, String name, String context) throws XmlPullParserException {
	if (xpp.getEventType() != START_TAG)
	throw new XmlPullParserException(Messages.DefinitionParser_55+name+Messages.DefinitionParser_56+Integer.toString(xpp.getEventType())+Messages.DefinitionParser_57+context);
	if (!xpp.getName().equals(name))
	throw new XmlPullParserException(Messages.DefinitionParser_58+name+Messages.DefinitionParser_59+xpp.getName()+Messages.DefinitionParser_60+context);
	}
	}