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/*
* Copyright 2000 Phil Burk, Mobileer Inc
*
* Licensed 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 com.softsynth.util;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
/**
* Write to a file with indentation at the beginning of a line. One advantage of using a PrintWriter
* is that it automatically handles line terminators properly on different hosts.
*
* @author Phil Burk, (C) 2000 SoftSynth.com All Rights Reserved
*/
public class IndentingWriter extends PrintWriter {
int spacesPerIndentation = 4;
int indentation = 0;
int position = 0;
public IndentingWriter(OutputStream stream) {
super(stream, true);
}
public IndentingWriter(Writer outputStreamWriter) {
super(outputStreamWriter, true);
}
public void setIndentation(int level) {
indentation = level;
}
public int getIndentation() {
return indentation;
}
/**
* Increase level of indentation by one.
*/
public void indent() {
indentation++;
}
/**
* Decrease level of indentation by one. Don't let level go below zero.
*/
public void undent() {
indentation--;
if (indentation < 0)
indentation = 0;
}
/**
* Print string. If at left margin, add spaces for current level of indentation.
*/
@Override
public void print(String s) {
if (position == 0) {
int numSpaces = indentation * spacesPerIndentation;
for (int i = 0; i < numSpaces; i++)
print(' ');
position += numSpaces;
}
super.print(s);
// System.out.print(s);
position += s.length();
}
@Override
public void println() {
super.println();
position = 0;
}
@Override
public void println(String s) {
print(s);
println();
}
}
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