Java HTML Encode htmlEncode(String str)

Description

html Encode

License

Apache License

Declaration

public static String htmlEncode(String str) 

Method Source Code

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

public class Main {
    public static String htmlEncode(String str) {
        if (str == null) {
            return "";
        }// www. j av a2s . c om
        String tmp = str;
        tmp = replace(tmp, "&", "&", false);
        tmp = replace(tmp, "<", "&lt;", false);
        tmp = replace(tmp, "\"", "&quot;", false);
        tmp = replace(tmp, ">", "&gt;", false);

        tmp = replace(tmp, " ", " &nbsp;", false);
        tmp = replace(tmp, "\n", "<br>", false);
        /*
         * if (tmp.indexOf("\n") >= 0 ){ tmp = replace(tmp, "\n", " <br> ",
         * false); tmp = replace(tmp, " ", "&nbsp;", false); }
         */
        return tmp;
    }

    /**
     * replace b in a to c, concern uppercase?d=true:d=false
     */
    public static String replace(String source, String findWhat, String replaceWith, boolean caseSence) {
        return replace(new StringBuffer(source), findWhat, replaceWith, caseSence).toString();
    }

    public static String replace(String source, String findWhat, String replaceWith) {
        return replace(new StringBuffer(source), findWhat, replaceWith, true).toString();
        // return source.replaceAll(findWhat, replaceWith);
    }

    public static StringBuffer replace(StringBuffer source, String findWhat, String replaceWith) {
        return replace(source, findWhat, replaceWith, true);
    }

    public static StringBuffer replace(StringBuffer source, String findWhat, String replaceWith,
            boolean caseSence) {
        if (source == null || findWhat == null || replaceWith == null) {
            return source;
        }
        if (findWhat.length() == 0) {
            return source;
        }
        int fromIndex = 0;
        int occIndex = -1;
        if (caseSence) {
            occIndex = source.toString().indexOf(findWhat, fromIndex);
        } else {
            occIndex = source.toString().toUpperCase().indexOf(findWhat.toUpperCase(), fromIndex);
        }

        while (occIndex >= 0) {
            source.delete(occIndex, occIndex + findWhat.length());
            source.insert(occIndex, replaceWith);
            fromIndex = occIndex + replaceWith.length();
            if (caseSence) {
                occIndex = source.toString().indexOf(findWhat, fromIndex);
            } else {
                occIndex = source.toString().toUpperCase().indexOf(findWhat.toUpperCase(), fromIndex);
            }
        }
        return source;
    }

    /**
     * Find the index of the searchStr in the string array strs.
     * Return -1, if not found.
     *
     * <pre>
     * StringUtil.indexOf(["s1", "s2"], "s1", true) = 0
     * StringUtil.indexOf(["s1", "s2"], "S1", true) = -1
     * </pre>
     *
     * @param strs
     *            the string array to check, maybe null.
     * @param searchStr
     *            the string to search for, maybe null.
     * @param caseSensive
     *            is it case sensive while finding the searchStr
     *            in the searchStr.
     * @return index of the searchStr found in the strs, -1 if not found.
     *
     * @author chenke
     */
    public static int indexOf(String[] strs, String searchStr, boolean caseSensive) {

        if (strs == null || strs.length == 0) {
            return -1;
        }
        for (int i = 0; i < strs.length; i++) {
            if (isEqual(strs[i], searchStr, caseSensive)) {
                return i;
            }
        }
        return -1;
    }

    public static int indexOf(String[] strs, String searchStr) {
        return indexOf(strs, searchStr, true);
    }

    private static boolean isEqual(String s1, String s2, boolean caseSensive) {
        if (caseSensive) {
            return s1 == null ? s2 == null : s1.equals(s2);
        } else {
            return s1 == null ? s2 == null : s1.equalsIgnoreCase(s2);
        }
    }
}

Related

1. htmlEncode(String s, boolean encodeWS)
2. HtmlEncode(String str)
3. HTMLEncode(String str)
4. htmlEncode(String str)
5. htmlEncode(String str)
6. htmlEncode(String str)
7. htmlEncode(String string)
8. HTMLEncode(String string)
9. htmlEncode(String string)