Java File Save saveConvert(String theString, boolean escapeSpace)

Description

save Convert

License

Open Source License

Declaration

public static String saveConvert(String theString, boolean escapeSpace) 

Method Source Code

//package com.java2s;
/*/*w  w  w.  j a  va 2s .co  m*/
 * JBoss, Home of Professional Open Source.
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

import java.io.IOException;
import java.io.InputStream;

public class Main {
    private static final String specialSaveChars = "=: \t\r\n\f#!";
    /** A table of hex digits */
    private static final char[] hexDigit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
            'E', 'F' };

    public static String saveConvert(String theString, boolean escapeSpace) {
        if (theString == null) {
            return ""; //$NON-NLS-1$
        }
        int len = theString.length();
        StringBuffer outBuffer = new StringBuffer(len * 2);

        for (int x = 0; x < len; x++) {
            char aChar = theString.charAt(x);
            switch (aChar) {
            case ' ':
                if (x == 0 || escapeSpace)
                    outBuffer.append('\\');

                outBuffer.append(' ');
                break;
            case '\\':
                outBuffer.append('\\');
                outBuffer.append('\\');
                break;
            case '\t':
                outBuffer.append('\\');
                outBuffer.append('t');
                break;
            case '\n':
                outBuffer.append('\\');
                outBuffer.append('n');
                break;
            case '\r':
                outBuffer.append('\\');
                outBuffer.append('r');
                break;
            case '\f':
                outBuffer.append('\\');
                outBuffer.append('f');
                break;
            default:
                if ((aChar < 0x0020) || (aChar > 0x007e)) {
                    outBuffer.append('\\');
                    outBuffer.append('u');
                    outBuffer.append(toHex((aChar >> 12) & 0xF));
                    outBuffer.append(toHex((aChar >> 8) & 0xF));
                    outBuffer.append(toHex((aChar >> 4) & 0xF));
                    outBuffer.append(toHex(aChar & 0xF));
                } else {
                    if (specialSaveChars.indexOf(aChar) != -1)
                        outBuffer.append('\\');
                    outBuffer.append(aChar);
                }
            }
        }
        return outBuffer.toString();
    }

    /**
     * Convert a nibble to a hex character
     * @param   nibble  the nibble to convert.
     */
    public static char toHex(int nibble) {
        return hexDigit[(nibble & 0xF)];
    }

    public static String toHex(byte[] bytes) {
        StringBuilder sb = new StringBuilder(bytes.length * 2);
        for (byte b : bytes) {
            sb.append(toHex(b >>> 4));
            sb.append(toHex(b));
        }
        return sb.toString();
    }

    public static void toHex(StringBuilder sb, InputStream is) throws IOException {
        int i = 0;
        while ((i = is.read()) != -1) {
            byte b = (byte) i;
            sb.append(toHex(b >>> 4));
            sb.append(toHex(b));
        }
    }
}

Related

1. save(InputStream is, OutputStream os)
2. save(OutputStream out, InputStream iStream)
3. saveBytesAsIfile(final IFile file, final byte[] bytes)
4. saveContent(OutputStream os, byte[] content)
5. saveDoubleMatrix(double[][] matrix, PrintStream out)
6. saveFile(InputStream st, File testFile)
7. saveFile(String fname, byte[] bytes)
8. saveFile(String where)