Java String Quote quoteCharacterData(String s)

Description

Quotes character data.

License

Open Source License

Parameter

Parameter	Description
s	character data to be quoted.

Return

quoted character data.

Declaration

public static String quoteCharacterData(String s) 

Method Source Code

//package com.java2s;
/****************************************************************************
Copyright (c) 2006, Colorado School of Mines and others. All rights reserved.
This program and accompanying materials are made available under the terms of
the Common Public License - v1.0, which accompanies this distribution, and is
available at http://www.eclipse.org/legal/cpl-v10.html
****************************************************************************/

public class Main {
    /**/*from ww w  . ja  v a2s  .c o m*/
     * Quotes character data.
     * Replaces special characters and XML entities.
     * Encloses string in double quotes if it contains whitespace.
     * @param s character data to be quoted.
     * @return quoted character data.
     */
    public static String quoteCharacterData(String s) {
        final char space = '\u0020';
        if (s == null)
            return null;
        s = replaceAll("&", "&", s);
        s = replaceAll("<", "&lt;", s);
        s = replaceAll("\\", "\\\\", s);
        s = replaceAll("\r", "\\r", s);
        s = replaceAll("\n", "\\n", s);
        s = replaceAll("\t", "\\t", s);
        s = replaceAll("\"", "\\\"", s);
        s = replaceAll("\'", "\\\'", s);
        String quote = "";
        if (s.length() == 0) {
            quote = "\"";
        } else {
            for (int i = 0; i < s.length(); ++i) {
                if (s.charAt(i) <= space) {
                    quote = "\"";
                    break;
                }
            }
        }
        return quote + s + quote;
    }

    /**
     * Replaces all occurences in string s of string x with string y.
     * @param x string to be replaced.
     * @param y string replacing each occurence of x.
     * @param s string containing zero or more x to be replaced.
     * @return string s with all x replaced with y.
     */
    private static String replaceAll(String x, String y, String s) {
        if (s == null)
            return null;
        int from = 0;
        int to = s.indexOf(x, from);
        if (to < 0)
            return s;
        StringBuilder d = new StringBuilder(s.length() + 32);
        while (to >= 0) {
            d.append(s.substring(from, to));
            d.append(y);
            from = to + x.length();
            to = s.indexOf(x, from);
        }
        return d.append(s.substring(from)).toString();
    }
}

Related

1. quoteAtom(String term)
2. quoteAttrValue(String s)
3. quoteCanonical(String s)
4. quoteCeylonKeywords(String qualifiedName)
5. quoteCharacterData(char[] ch, int start, int length)
6. quoteCharacters(String s)
7. quoteCharCode(int code)
8. quoteCharPresent(String quote)
9. quoteComma(String value)