src/Qtronic/TTCNScripter_v211/PrettyPrinter.java

/** Copyright (C) Conformiq Software Oy, Ltd.
 * All rights reserved.
 *
 * Created Wed Aug 27 17:13:05 2008.
 *
 * @file
 *
 * @author Tommi Vainikainen
 *
 *
 */
package com.conformiq.adaptation.ttcn;

import java.io.PrintWriter;
import java.io.Writer;
import java.util.List;
import java.util.Vector;

class PrettyPrinter extends PrintWriter {
    private List<String> stack;
    private String header;
    private boolean headerPrinted;

    public PrettyPrinter(Writer out) {
        super(out);
        this.stack = new Vector<String>();
        this.header = "";
        this.headerPrinted = true;
    }

    private void printHeader() {
        if (headerPrinted)
            return;

        for (int i = 0; i < this.stack.size(); i++) {
            super.print(this.stack.get(i));
        }
        this.headerPrinted = true;
    }

    public void print(String s) {
        printHeader();
        this.header = this.header.concat(s);
        super.print(s);
    }

    // Start a new block
    public void block() {
        this.stack.add(header);
        this.header = "";
    }

    // Resume to previous state
    public void resume() {
        // remove last
        this.stack.remove(this.stack.size() - 1);
    }

    // Print EOL char
    public void endl() {
        if (this.headerPrinted) { // suppress double empty lines
            println();
            this.header = "";
            this.headerPrinted = false;
        }
    }

    public void emptyline() {
        println();
        this.header = "";
        this.headerPrinted = false;
    }

    public void ws() {
        print(" ");
    }
}