Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/* 
 * Copyright (C) 2014 erbjuder.com
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * This method ensures that the output String has only valid XML unicode
     * characters as specified by the XML 1.0 standard. For reference, please
     * see
     * <a href="http://www.w3.org/TR/2000/REC-xml-20001006#NT-Char">the
     * standard</a>. This method will return an empty String if the input is
     * null or empty.
     *
     * @param in The String whose non-valid characters we want to remove.
     * @return The in String, stripped of non-valid characters.
     */
    public static String cleanInvalidXmlChars(String text) {

        if (null == text || text.isEmpty()) {
            return text;
        }

        final int len = text.length();
        char current = 0;
        int codePoint = 0;
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < len; i++) {
            current = text.charAt(i);
            boolean surrogate = false;
            if (Character.isHighSurrogate(current) && i + 1 < len && Character.isLowSurrogate(text.charAt(i + 1))) {
                surrogate = true;
                codePoint = text.codePointAt(i++);
            } else {
                codePoint = current;
            }
            if ((codePoint == 0x9) || (codePoint == 0xA) || (codePoint == 0xD)
                    || ((codePoint >= 0x20) && (codePoint <= 0xD7FF))
                    || ((codePoint >= 0xE000) && (codePoint <= 0xFFFD))
                    || ((codePoint >= 0x10000) && (codePoint <= 0x10FFFF))) {
                sb.append(current);

                if (surrogate) {
                    sb.append(text.charAt(i));
                }
            } else {

                // 
                // Invalid Char at index transformed into hex 
                //System.err.println("Index=["+ i +"] Char=["+ String.format("%04x", (int)text.charAt(i)) +"] CodePoint=[" + codePoint + "]");
                //sb.append("hex"+String.format("%04x", (int)text.charAt(i)));
            }
        }

        return sb.toString();
    }
}