public static String escapeHTMLEntities()

in jspwiki-util/src/main/java/org/apache/wiki/util/TextUtil.java [694:736]

• 39 lines of code
• 15 McCabe index (conditional complexity)

    public static String escapeHTMLEntities( final String buf ) {
        final StringBuilder tmpBuf = new StringBuilder( buf.length() + 20 );
        for( int i = 0; i < buf.length(); i++ ) {
            final char ch = buf.charAt(i);
            if( ch == '<' ) {
                tmpBuf.append("&lt;");
            } else if( ch == '>' ) {
                tmpBuf.append("&gt;");
            } else if( ch == '\"' ) {
                tmpBuf.append("&quot;");
            } else if( ch == '&' ) {
                // If the following is an XML entity reference (&#.*;) we'll leave it as it is; otherwise we'll replace it with an &amp;
                boolean isEntity = false;
                final StringBuilder entityBuf = new StringBuilder();
                if( i < buf.length() -1 ) {
                    for( int j = i; j < buf.length(); j++ ) {
                        final char ch2 = buf.charAt( j );
                        if( Character.isLetterOrDigit( ch2 ) || (ch2 == '#' && j == i+1) || ch2 == ';' || ch2 == '&' ) {
                            entityBuf.append(ch2);
                            if( ch2 == ';' ) {
                                isEntity = true;
                                break;
                            }
                        } else {
                            break;
                        }
                    }
                }

                if( isEntity ) {
                    tmpBuf.append( entityBuf );
                    i = i + entityBuf.length() - 1;
                } else {
                    tmpBuf.append( "&amp;" );
                }

            } else {
                tmpBuf.append( ch );
            }
        }

        return tmpBuf.toString();
    }