/*

 * Copyright (c) 2003, 2009, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package build.tools.logutil;

import java.io.PrintWriter ;

import java.io.Writer ;

import java.io.OutputStream ;

import java.io.BufferedWriter ;

import java.io.OutputStreamWriter ;

import java.util.StringTokenizer ;

public class IndentingPrintWriter extends PrintWriter {

    private int level = 0 ;

    private int indentWidth = 4 ;

    private String indentString = "" ;

    public void printMsg( String msg, Object... data )

    {

        // System.out.println( "printMsg called with msg=" + msg + " data=" + data ) ;

        StringTokenizer st = new StringTokenizer( msg, "@", true ) ;

        StringBuffer result = new StringBuffer() ;

        String token = null ;

        int pos = 0;

        while (st.hasMoreTokens()) {

            token = st.nextToken() ;

            if (token.equals("@")) {

                if (pos < data.length) {

                    result.append( data[pos] );

                    ++pos;

                } else {

                    throw new Error( "List too short for message" ) ;

                }

            } else {

                result.append( token ) ;

            }

        }

        // System.out.println( "Printing result " + result + " to file" ) ;

        print( result ) ;

        println() ;

    }

    public IndentingPrintWriter (Writer out) {

        super( out, true ) ;

        // System.out.println( "Constructing a new IndentingPrintWriter with Writer " + out ) ;

    }

    public IndentingPrintWriter(Writer out, boolean autoFlush) {

        super( out, autoFlush ) ;

        // System.out.println( "Constructing a new IndentingPrintWriter with Writer " + out ) ;

    }

    public IndentingPrintWriter(OutputStream out) {

        super(out, true);

        // System.out.println( "Constructing a new IndentingPrintWriter with OutputStream " + out ) ;

    }

    public IndentingPrintWriter(OutputStream out, boolean autoFlush) {

        super(new BufferedWriter(new OutputStreamWriter(out)), autoFlush);

        // System.out.println( "Constructing a new IndentingPrintWriter with OutputStream " + out ) ;

    }

    public void setIndentWidth( int indentWidth )

    {

        this.indentWidth = indentWidth ;

        updateIndentString() ;

    }

    public void indent()

    {

        level++ ;

        updateIndentString() ;

    }

    public void undent()

    {

        if (level > 0) {

            level-- ;

            updateIndentString() ;

        }

    }

    private void updateIndentString()

    {

        int size = level * indentWidth ;

        StringBuffer sbuf = new StringBuffer( size ) ;

        for (int ctr = 0; ctr<size; ctr++ )

            sbuf.append( " " ) ;

        indentString = sbuf.toString() ;

    }

    // overridden from PrintWriter

    public void println()

    {

        super.println() ;

        print( indentString ) ;

    }

}