com.sun.tools.ws.processor.util.IndentingWriter Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jaxws-tools
Open source Reference Implementation of JSR-224: Java API for XML Web Services
There is a newer version: 4.0.3
/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License).  You may not use this file except in
 * compliance with the License.
 * 
 * You can obtain a copy of the license at
 * https://glassfish.dev.java.net/public/CDDLv1.0.html.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 * 
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at https://glassfish.dev.java.net/public/CDDLv1.0.html.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * you own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 * 
 * Copyright 2006 Sun Microsystems Inc. All Rights Reserved
 */

package com.sun.tools.ws.processor.util;

import com.sun.tools.ws.processor.generator.GeneratorException;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.Writer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.text.MessageFormat;

/**
 *
 * @author WS Development Team
 */
public class IndentingWriter extends BufferedWriter {

    private boolean beginningOfLine = true;
    private int currentIndent = 0;
    private int indentStep = 4;

    public IndentingWriter(Writer out) {
        super(out);
    }

    public IndentingWriter(Writer out,int step) {
        this(out);

        if (indentStep < 0) {
            throw new IllegalArgumentException("negative indent step");
        }
        indentStep = step;
    }

    public void write(int c) throws IOException {
        checkWrite();
        super.write(c);
    }

    public void write(char[] cbuf, int off, int len) throws IOException {
        if (len > 0) {
            checkWrite();
        }
        super.write(cbuf, off, len);
    }

    public void write(String s, int off, int len) throws IOException {
        if (len > 0) {
            checkWrite();
        }
        super.write(s, off, len);
    }

    public void newLine() throws IOException {
        super.newLine();
        beginningOfLine = true;
    }

    protected void checkWrite() throws IOException {
        if (beginningOfLine) {
            beginningOfLine = false;
            int i = currentIndent;
            while (i > 0) {
                super.write(' ');
                -- i;
            }
        }
    }

    protected void indentIn() {
        currentIndent += indentStep;
    }

    protected void indentOut() {
        currentIndent -= indentStep;
        if (currentIndent < 0) {
            currentIndent = 0;
        }
    }

    public void pI() {
        indentIn();
    }

    public void pO() {
        indentOut();
    }

    public void pI(int levels) {
        for (int i = 0; i < levels; ++i) {
            indentIn();
        }
    }

    public void pO(int levels) {
        for (int i = 0; i < levels; ++i) {
            indentOut();
        }
    }

    public void p(String s) throws IOException {
        /*
        int tabCount = 0;
        for (int i = 0; i < s.length(); ++i) {
            if (s.charAt(i) == '\t') {
                ++tabCount;
                indentIn();
            }
        }

        String printStr = s.substring(tabCount);
         */
        boolean canEncode = true;

        //bug fix: 4839636
        try{
            if(!canEncode(s)) {
                canEncode = false;
            }
        } catch (Throwable t) {

            // there was some exception, what should we do?
            // lets ignore it for now and proceed with the code generation!
        }

        if(!canEncode) {
            throw new GeneratorException(
                "generator.indentingwriter.charset.cantencode", s);
        }
        write(s);
/*
        while (tabCount-- > 0) {
            indentOut();
        }
 */
    }

    /**
     * Check if encode can handle the chars in this string.
     *
     */
    protected boolean canEncode(String s) {
        final CharsetEncoder encoder =
            Charset.forName(System.getProperty("file.encoding")).newEncoder();
        char[] chars = s.toCharArray();
        for (int i=0; i