Encodes the string to be used in HTML. - Java java.lang

Java examples for java.lang:String HTML

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Description

Encodes the string to be used in HTML.

Demo Code


//package com.java2s;
import java.text.CharacterIterator;
import java.text.StringCharacterIterator;

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

    /**
     * Encodes the string to be used in HTML.
     * @param aText string.
     * @return encoded.
     */
    public static String forHtmlComplete(String aText) {
        final StringBuilder result = new StringBuilder();
        final StringCharacterIterator iterator = new StringCharacterIterator(
                aText);
        char character = iterator.current();
        while (character != CharacterIterator.DONE) {
            if (character == '<') {
                result.append("&lt;");
            } else if (character == '>') {
                result.append("&gt;");
            } else if (character == '&') {
                result.append("&amp;");
            } else if (character == '\"') {
                result.append("&quot;");
            } else if (character == '\n') {
                result.append("<br>");
            } else if (character == ' ') {
                result.append("&nbsp;");
            } else if (character == '\t') {
                addCharEntity(9, result);
            } else if (character == '!') {
                addCharEntity(33, result);
            } else if (character == '#') {
                addCharEntity(35, result);
            } else if (character == '$') {
                addCharEntity(36, result);
            } else if (character == '%') {
                addCharEntity(37, result);
            } else if (character == '\'') {
                addCharEntity(39, result);
            } else if (character == '(') {
                addCharEntity(40, result);
            } else if (character == ')') {
                addCharEntity(41, result);
            } else if (character == '*') {
                addCharEntity(42, result);
            } else if (character == '+') {
                addCharEntity(43, result);
            } else if (character == ',') {
                addCharEntity(44, result);
            } else if (character == '-') {
                addCharEntity(45, result);
            } else if (character == '.') {
                addCharEntity(46, result);
            } else if (character == '/') {
                addCharEntity(47, result);
            } else if (character == ':') {
                addCharEntity(58, result);
            } else if (character == ';') {
                addCharEntity(59, result);
            } else if (character == '=') {
                addCharEntity(61, result);
            } else if (character == '?') {
                addCharEntity(63, result);
            } else if (character == '@') {
                addCharEntity(64, result);
            } else if (character == '[') {
                addCharEntity(91, result);
            } else if (character == '\\') {
                addCharEntity(92, result);
            } else if (character == ']') {
                addCharEntity(93, result);
            } else if (character == '^') {
                addCharEntity(94, result);
            } else if (character == '_') {
                addCharEntity(95, result);
            } else if (character == '`') {
                addCharEntity(96, result);
            } else if (character == '{') {
                addCharEntity(123, result);
            } else if (character == '|') {
                addCharEntity(124, result);
            } else if (character == '}') {
                addCharEntity(125, result);
            } else if (character == '~') {
                addCharEntity(126, result);
            } else {
                // the char is not a special one
                // add it to the result as is
                result.append(character);
            }
            character = iterator.next();
        }
        return result.toString();

    }

    private static void addCharEntity(Integer aIdx, StringBuilder aBuilder) {
        String padding = "";
        if (aIdx <= 9) {
            padding = "00";
        } else if (aIdx <= 99) {
            padding = "0";
        } else {
            // no prefix
        }
        String number = padding + aIdx.toString();
        aBuilder.append("&#" + number + ";");
    }
}

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