| /* |
| |
| 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 org.apache.batik.parser; |
| |
| import java.io.IOException; |
| |
| /** |
| * This class implements an event-based parser for the SVG angle |
| * values. |
| * |
| * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a> |
| * @version $Id$ |
| */ |
| public class AngleParser extends NumberParser { |
| |
| /** |
| * The angle handler used to report parse events. |
| */ |
| protected AngleHandler angleHandler = DefaultAngleHandler.INSTANCE; |
| |
| /** |
| * Allows an application to register an angle handler. |
| * |
| * <p>If the application does not register a handler, all |
| * events reported by the parser will be silently ignored. |
| * |
| * <p>Applications may register a new or different handler in the |
| * middle of a parse, and the parser must begin using the new |
| * handler immediately.</p> |
| * @param handler The transform list handler. |
| */ |
| public void setAngleHandler(AngleHandler handler) { |
| angleHandler = handler; |
| } |
| |
| /** |
| * Returns the angle handler in use. |
| */ |
| public AngleHandler getAngleHandler() { |
| return angleHandler; |
| } |
| |
| /** |
| * Parses the current reader representing an angle. |
| */ |
| protected void doParse() throws ParseException, IOException { |
| angleHandler.startAngle(); |
| |
| current = reader.read(); |
| skipSpaces(); |
| |
| try { |
| float f = parseFloat(); |
| |
| angleHandler.angleValue(f); |
| |
| s: if (current != -1) { |
| switch (current) { |
| case 0xD: case 0xA: case 0x20: case 0x9: |
| break s; |
| } |
| |
| switch (current) { |
| case 'd': |
| current = reader.read(); |
| if (current != 'e') { |
| reportCharacterExpectedError('e', current ); |
| break; |
| } |
| current = reader.read(); |
| if (current != 'g') { |
| reportCharacterExpectedError('g', current ); |
| break; |
| } |
| angleHandler.deg(); |
| current = reader.read(); |
| break; |
| case 'g': |
| current = reader.read(); |
| if (current != 'r') { |
| reportCharacterExpectedError('r', current ); |
| break; |
| } |
| current = reader.read(); |
| if (current != 'a') { |
| reportCharacterExpectedError('a', current ); |
| break; |
| } |
| current = reader.read(); |
| if (current != 'd') { |
| reportCharacterExpectedError('d', current ); |
| break; |
| } |
| angleHandler.grad(); |
| current = reader.read(); |
| break; |
| case 'r': |
| current = reader.read(); |
| if (current != 'a') { |
| reportCharacterExpectedError('a', current ); |
| break; |
| } |
| current = reader.read(); |
| if (current != 'd') { |
| reportCharacterExpectedError('d', current ); |
| break; |
| } |
| angleHandler.rad(); |
| current = reader.read(); |
| break; |
| default: |
| reportUnexpectedCharacterError( current ); |
| } |
| } |
| |
| skipSpaces(); |
| if (current != -1) { |
| reportError("end.of.stream.expected", |
| new Object[] { new Integer(current) }); |
| } |
| } catch (NumberFormatException e) { |
| reportUnexpectedCharacterError( current ); |
| } |
| angleHandler.endAngle(); |
| } |
| } |