Esempio n. 1
0
        /// <summary>
        /// Encodes according to the CSS encoding rules.
        /// </summary>
        /// <param name="input">The string to encode.</param>
        /// <returns>The encoded string.</returns>
        internal static string Encode(string input)
        {
            if (string.IsNullOrEmpty(input))
            {
                return(input);
            }
            char[][]          value = characterValuesLazy.Value;
            StringBuilder     outputStringBuilder = EncoderUtil.GetOutputStringBuilder(input.Length, 7);
            Utf16StringReader utf16StringReader   = new Utf16StringReader(input);

            while (true)
            {
                int num = utf16StringReader.ReadNextScalarValue();
                if (num < 0)
                {
                    break;
                }
                if (num >= value.Length)
                {
                    char[] value2 = SafeList.SlashThenSixDigitHexValueGenerator(num);
                    outputStringBuilder.Append(value2);
                }
                else if (value[num] != null)
                {
                    char[] value3 = value[num];
                    outputStringBuilder.Append(value3);
                }
                else
                {
                    outputStringBuilder.Append((char)num);
                }
            }
            return(outputStringBuilder.ToString());
        }
        /// <summary>
        /// Encodes input strings for use in HTML.
        /// </summary>
        /// <param name="input">String to be encoded</param>
        /// <param name="useNamedEntities">Value indicating if the HTML 4.0 named entities should be used.</param>
        /// <param name="encoderTweak">A <see cref="T:Microsoft.Security.Application.MethodSpecificEncoder" /> function, if needed.</param>
        /// <returns>
        /// Encoded string for use in HTML.
        /// </returns>
        private static string HtmlEncode(string input, bool useNamedEntities, MethodSpecificEncoder encoderTweak)
        {
            if (string.IsNullOrEmpty(input))
            {
                return(input);
            }
            if (characterValues == null)
            {
                InitialiseSafeList();
            }
            char[][] array = null;
            if (useNamedEntities)
            {
                array = namedEntitiesLazy.Value;
            }
            StringBuilder outputStringBuilder = EncoderUtil.GetOutputStringBuilder(input.Length, 10);

            AcquireReadLock();
            try
            {
                Utf16StringReader utf16StringReader = new Utf16StringReader(input);
                while (true)
                {
                    int num = utf16StringReader.ReadNextScalarValue();
                    if (num < 0)
                    {
                        break;
                    }
                    if (num > 65535)
                    {
                        char[] value = SafeList.HashThenValueGenerator(num);
                        outputStringBuilder.Append('&');
                        outputStringBuilder.Append(value);
                        outputStringBuilder.Append(';');
                    }
                    else
                    {
                        char   c = (char)num;
                        char[] value2;
                        if (encoderTweak != null && encoderTweak(c, out value2))
                        {
                            outputStringBuilder.Append(value2);
                        }
                        else if (useNamedEntities && array[num] != null)
                        {
                            char[] value3 = array[num];
                            outputStringBuilder.Append('&');
                            outputStringBuilder.Append(value3);
                            outputStringBuilder.Append(';');
                        }
                        else if (characterValues[num] != null)
                        {
                            char[] value4 = characterValues[num];
                            outputStringBuilder.Append('&');
                            outputStringBuilder.Append(value4);
                            outputStringBuilder.Append(';');
                        }
                        else
                        {
                            outputStringBuilder.Append(c);
                        }
                    }
                }
            }
            finally
            {
                ReleaseReadLock();
            }
            return(outputStringBuilder.ToString());
        }