001: /*
002:
003: ============================================================================
004: The Apache Software License, Version 1.1
005: ============================================================================
006:
007: Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
008:
009: Redistribution and use in source and binary forms, with or without modifica-
010: tion, are permitted provided that the following conditions are met:
011:
012: 1. Redistributions of source code must retain the above copyright notice,
013: this list of conditions and the following disclaimer.
014:
015: 2. Redistributions in binary form must reproduce the above copyright notice,
016: this list of conditions and the following disclaimer in the documentation
017: and/or other materials provided with the distribution.
018:
019: 3. The end-user documentation included with the redistribution, if any, must
020: include the following acknowledgment: "This product includes software
021: developed by the Apache Software Foundation (http://www.apache.org/)."
022: Alternately, this acknowledgment may appear in the software itself, if
023: and wherever such third-party acknowledgments normally appear.
024:
025: 4. The names "Batik" and "Apache Software Foundation" must not be
026: used to endorse or promote products derived from this software without
027: prior written permission. For written permission, please contact
028: apache@apache.org.
029:
030: 5. Products derived from this software may not be called "Apache", nor may
031: "Apache" appear in their name, without prior written permission of the
032: Apache Software Foundation.
033:
034: THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
035: INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
036: FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
037: APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
038: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
039: DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
040: OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
041: ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
042: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
043: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
044:
045: This software consists of voluntary contributions made by many individuals
046: on behalf of the Apache Software Foundation. For more information on the
047: Apache Software Foundation, please see <http://www.apache.org/>.
048:
049: */
050:
051: package org.apache.batik.util.io;
052:
053: import java.io.IOException;
054:
055: /**
056: * This class represents a NormalizingReader which handles Strings.
057: *
058: * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
059: * @version $Id$
060: */
061: public class StringNormalizingReader extends NormalizingReader {
062:
063: /**
064: * The characters.
065: */
066: protected String string;
067:
068: /**
069: * The length of the string.
070: */
071: protected int length;
072:
073: /**
074: * The index of the next character.
075: */
076: protected int next;
077:
078: /**
079: * The current line in the stream.
080: */
081: protected int line = 1;
082:
083: /**
084: * The current column in the stream.
085: */
086: protected int column;
087:
088: /**
089: * Creates a new StringNormalizingReader.
090: * @param s The string to read.
091: */
092: public StringNormalizingReader(String s) {
093: string = s;
094: length = s.length();
095: }
096:
097: /**
098: * Read a single character. This method will block until a
099: * character is available, an I/O error occurs, or the end of the
100: * stream is reached.
101: */
102: public int read() throws IOException {
103: int result = (length == next) ? -1 : string.charAt(next++);
104: // BEGIN RAVE MODIFICATIONS
105: column++;
106: // END RAVE MODIFICATIONS
107: if (result <= 13) {
108: switch (result) {
109: case 13:
110: column = 0;
111: line++;
112: int c = (length == next) ? -1 : string.charAt(next);
113: if (c == 10) {
114: next++;
115: }
116: return 10;
117:
118: case 10:
119: column = 0;
120: line++;
121: }
122: }
123: return result;
124: }
125:
126: /**
127: * Returns the current line in the stream.
128: */
129: public int getLine() {
130: return line;
131: }
132:
133: /**
134: * Returns the current column in the stream.
135: */
136: public int getColumn() {
137: return column;
138: }
139:
140: /**
141: * Close the stream.
142: */
143: public void close() throws IOException {
144: string = null;
145: }
146: }
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