001: /*
002: $Id: IndentPrinter.java 206 2003-10-09 17:24:20Z jstrachan $
003:
004: Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005:
006: Redistribution and use of this software and associated documentation
007: ("Software"), with or without modification, are permitted provided
008: that the following conditions are met:
009:
010: 1. Redistributions of source code must retain copyright
011: statements and notices. Redistributions must also contain a
012: copy of this document.
013:
014: 2. Redistributions in binary form must reproduce the
015: above copyright notice, this list of conditions and the
016: following disclaimer in the documentation and/or other
017: materials provided with the distribution.
018:
019: 3. The name "groovy" must not be used to endorse or promote
020: products derived from this Software without prior written
021: permission of The Codehaus. For written permission,
022: please contact info@codehaus.org.
023:
024: 4. Products derived from this Software may not be called "groovy"
025: nor may "groovy" appear in their names without prior written
026: permission of The Codehaus. "groovy" is a registered
027: trademark of The Codehaus.
028:
029: 5. Due credit should be given to The Codehaus -
030: http://groovy.codehaus.org/
031:
032: THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033: ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034: NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035: FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
036: THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039: SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043: OF THE POSSIBILITY OF SUCH DAMAGE.
044:
045: */
046: package groovy.util;
047:
048: import java.io.PrintWriter;
049:
050: /**
051: * A helper class for printing indented text
052: *
053: * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
054: * @version $Revision: 206 $
055: */
056: public class IndentPrinter {
057:
058: private int indentLevel;
059: private String indent;
060: private PrintWriter out;
061:
062: public IndentPrinter() {
063: this (new PrintWriter(System.out), " ");
064: }
065:
066: public IndentPrinter(PrintWriter out) {
067: this (out, " ");
068: }
069:
070: public IndentPrinter(PrintWriter out, String indent) {
071: if (out == null) {
072: /** @todo temporary hack */
073: out = new PrintWriter(System.out);
074: //throw new IllegalArgumentException("Must specify a PrintWriter");
075: }
076: this .out = out;
077: this .indent = indent;
078: }
079:
080: public void println(String text) {
081: out.print(text);
082: out.println();
083: }
084:
085: public void print(String text) {
086: out.print(text);
087: }
088:
089: public void printIndent() {
090: for (int i = 0; i < indentLevel; i++) {
091: out.print(indent);
092: }
093: }
094:
095: public void println() {
096: out.println();
097: }
098:
099: public void incrementIndent() {
100: ++indentLevel;
101: }
102:
103: public void decrementIndent() {
104: --indentLevel;
105: }
106:
107: public int getIndentLevel() {
108: return indentLevel;
109: }
110:
111: public void setIndentLevel(int indentLevel) {
112: this .indentLevel = indentLevel;
113: }
114:
115: public void flush() {
116: out.flush();
117: }
118: }
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