Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * dmfs - http://dmfs.org/
 *
 * Copyright (C) 2012 Marten Gajda <marten@dmfs.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

import java.io.IOException;
import java.io.Writer;

public class Main {
    /**
     * The XML entities.
     */
    private final static String XML_ENTITY_QUOT = "&quot;";
    private final static String XML_ENTITY_AMP = "&amp;";
    private final static String XML_ENTITY_APOS = "&apos;";
    private final static String XML_ENTITY_LT = "&lt;";
    private final static String XML_ENTITY_GT = "&gt;";
    /**
     * Xml special characters that have to be encoded by an entity.
     */
    private final static String XML_SPECIAL_CHARS = "\"&'<>";

    /**
     * Writes {@link String} {@code s} to the {@link Writer} {@code out} replacing special XML tokens by their respective XML entities.
     * 
     * @param out
     *            The {@link Writer} to write to.
     * @param s
     *            The raw {@link String}.
     * 
     * @throws IOException
     */
    public static void writeXmlEntityEncodedString(Writer out, String s) throws IOException {
        if (s == null || s.length() == 0) {
            return;
        }

        int pos;
        int start = 0;

        // scan for special characters
        while ((pos = minIndexOfOneOf(s, start, XML_SPECIAL_CHARS)) >= 0) {
            // write everything up to the special character
            out.write(s.substring(start, pos));

            // write the XML entity
            switch (s.charAt(pos)) {
            case '"':
                out.write(XML_ENTITY_QUOT);
                break;
            case '&':
                out.write(XML_ENTITY_AMP);
                break;
            case '\'':
                out.write(XML_ENTITY_APOS);
                break;
            case '<':
                out.write(XML_ENTITY_LT);
                break;
            case '>':
                out.write(XML_ENTITY_GT);
                break;
            }
            // skip the special character
            start = pos + 1;
        }
        // write everything that's left
        out.write(s.substring(start));
    }

    /**
     * Find the first occurrence of any character in needles in string from the position start on.
     * 
     * @param string
     *            {@link String} to scan.
     * 
     * @param start
     *            Position of first character to take into account.
     * 
     * @param needles
     *            Characters to scan for.
     * 
     * @return The first occurrence of any element of needles or {@code -1} if none was found.
     * 
     */
    public static int minIndexOfOneOf(String string, int start, String needles) {
        if (string == null || string.length() == 0) {
            return -1;
        }

        int len = string.length();

        while (start < len) {
            if (needles.indexOf(string.charAt(start)) >= 0) {
                return start;
            }
            ++start;
        }
        return -1;
    }
}