001 /* 002 $Id: IndentPrinter.java,v 1.1 2003/10/09 17:24:19 jstrachan Exp $ 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: 1.1 $ 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 }