01: /*
02:
03: Licensed to the Apache Software Foundation (ASF) under one or more
04: contributor license agreements. See the NOTICE file distributed with
05: this work for additional information regarding copyright ownership.
06: The ASF licenses this file to You under the Apache License, Version 2.0
07: (the "License"); you may not use this file except in compliance with
08: the License. You may obtain a copy of the License at
09:
10: http://www.apache.org/licenses/LICENSE-2.0
11:
12: Unless required by applicable law or agreed to in writing, software
13: distributed under the License is distributed on an "AS IS" BASIS,
14: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15: See the License for the specific language governing permissions and
16: limitations under the License.
17:
18: */
19: package org.apache.batik.parser;
20:
21: import java.io.IOException;
22:
23: /**
24: * This class implements an event-based parser for the SVG length
25: * list values.
26: *
27: * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
28: * @version $Id: LengthListParser.java 502167 2007-02-01 09:26:51Z dvholten $
29: */
30: public class LengthListParser extends LengthParser {
31:
32: /**
33: * Creates a new LengthListParser.
34: */
35: public LengthListParser() {
36: lengthHandler = DefaultLengthListHandler.INSTANCE;
37: }
38:
39: /**
40: * Allows an application to register a length list handler.
41: *
42: * <p>If the application does not register a handler, all
43: * events reported by the parser will be silently ignored.
44: *
45: * <p>Applications may register a new or different handler in the
46: * middle of a parse, and the parser must begin using the new
47: * handler immediately.</p>
48: * @param handler The transform list handler.
49: */
50: public void setLengthListHandler(LengthListHandler handler) {
51: lengthHandler = handler;
52: }
53:
54: /**
55: * Returns the length list handler in use.
56: */
57: public LengthListHandler getLengthListHandler() {
58: return (LengthListHandler) lengthHandler;
59: }
60:
61: /**
62: * Parses the given reader.
63: */
64: protected void doParse() throws ParseException, IOException {
65: ((LengthListHandler) lengthHandler).startLengthList();
66:
67: current = reader.read();
68: skipSpaces();
69:
70: try {
71: for (;;) {
72: lengthHandler.startLength();
73: parseLength();
74: lengthHandler.endLength();
75: skipCommaSpaces();
76: if (current == -1) {
77: break;
78: }
79: }
80: } catch (NumberFormatException e) {
81: reportUnexpectedCharacterError(current);
82: }
83: ((LengthListHandler) lengthHandler).endLengthList();
84: }
85: }
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