escapes & characters to & only - Java XML

Java examples for XML:XML String Escape

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Description

escapes & characters to & only

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        String str = "java2s.com";
        System.out.println(xmlAmp(str));
    }/*from w  ww . j a v  a 2  s  . c  o m*/

    /**
     * escapes &  characters to & only
     * @param String, a string to convert
     * @return String, a converted string
     */
    public static String xmlAmp(String str) {
        int index = 0;
        int strIndex = 0;
        int semiIndex = 0;
        StringBuffer ret = new StringBuffer();
        index = str.indexOf("&", strIndex);
        while (index > -1) {
            ret.append(str.substring(strIndex, index));
            semiIndex = str.indexOf(";", index);
            if (semiIndex > -1) {
                if ((semiIndex - index) > 7 && !isInComment(str, index)) {
                    ret.append("&");
                } else {
                    ret.append("&");
                }
            }
            strIndex = index + 1;
            index = str.indexOf("&", strIndex);
        }
        ret.append(str.substring(strIndex));

        return (ret.toString());

    }

    /**
     * analysis the position of character is in the comment section
     * @param String, whole text paragraph
     * @param int, the character index position within text
     * @return booelan, true means position in comment section
     */
    public static boolean isInComment(String str, int index) {
        int strComment = 0;
        int endComment = 0;
        boolean ret = false;
        strComment = str.lastIndexOf("<!--", index);
        if (strComment > -1) {
            endComment = str.lastIndexOf("-->", index);
            if (endComment < strComment) {
                ret = true;
            }
        }

        return (ret);

    }
}

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