Java XML String Transform escapeBackslashes(String value)

Description

Escapes backslashes ('\') with additional backslashes in a given String, returning a new, escaped String.

License

Apache License

Parameter

Parameter	Description
value	String to escape. Cannot be null.

Return

escaped String. Never is null.

Declaration

public static String escapeBackslashes(String value) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import org.w3c.dom.Element;

import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;

import java.io.StringWriter;

public class Main {
    /**/*from   w ww.  j  ava  2 s .c  o  m*/
     * Escapes backslashes ('\') with additional backslashes in a given String, returning a new, escaped String.
     *
     * @param value String to escape.   Cannot be null.
     * @return escaped String.  Never is null.
     */
    public static String escapeBackslashes(String value) {
        StringBuilder buf = new StringBuilder(value);
        for (int looper = 0; looper < buf.length(); looper++) {
            char curr = buf.charAt(looper);
            char next = 0;
            if (looper + 1 < buf.length())
                next = buf.charAt(looper + 1);

            if (curr == '\\') {
                if (next != '\\') { // only if not already escaped
                    buf.insert(looper, '\\'); // escape backslash
                }
                looper++; // skip past extra backslash (either the one we added or existing)
            }
        }
        return buf.toString();
    }

    public static String toString(Element e) {
        try {
            TransformerFactory tfactory = TransformerFactory.newInstance();
            Transformer xform = tfactory.newTransformer();
            Source src = new DOMSource(e);
            java.io.StringWriter writer = new StringWriter();
            Result result = new javax.xml.transform.stream.StreamResult(writer);
            xform.transform(src, result);
            return writer.toString();
        } catch (Exception ex) {
            return "Unable to convert to string: " + ex.toString();
        }
    }
}

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