/// <summary>
/// Converts a string to a Duration value.
/// </summary>
/// <param name="text">String text to convert.</param>
/// <param name="targetValue">After invocation, converted value.</param>
/// <returns>true if the value was converted; false otherwise.</returns>
/// <remarks>Copy of WebConvert.TryKeyStringToTime.</remarks>
private static bool TryUriStringToDuration(string text, out TimeSpan targetValue)
{
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixDuration, ref text))
{
targetValue = default(TimeSpan);
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = default(TimeSpan);
return(false);
}
try
{
targetValue = EdmValueParser.ParseDuration(text);
return(true);
}
catch (FormatException)
{
targetValue = default(TimeSpan);
return(false);
}
}
/// <summary>
/// Try to parse the given text to a Geometry object.
/// </summary>
/// <param name="text">Text to parse.</param>
/// <param name="targetValue">Geometry to return.</param>
/// <param name="parsingFailureReasonException">The detailed reason of parsing error.</param>
/// <returns>True if succeeds, false if not.</returns>
private static bool TryUriStringToGeometry(string text, out Geometry targetValue, out UriLiteralParsingException parsingFailureReasonException)
{
parsingFailureReasonException = null;
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixGeometry, ref text))
{
targetValue = default(Geometry);
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = default(Geometry);
return(false);
}
try
{
targetValue = LiteralUtils.ParseGeometry(text);
return(true);
}
catch (ParseErrorException e)
{
targetValue = default(Geometry);
parsingFailureReasonException =
new UriLiteralParsingException(e.Message);
return(false);
}
}
/// <summary>
/// Converts a string to a byte[] value.
/// </summary>
/// <param name="text">String text to convert.</param>
/// <param name="targetValue">After invocation, converted value.</param>
/// <returns>true if the value was converted; false otherwise.</returns>
/// <remarks>Copy of WebConvert.TryKeyStringToByteArray.</remarks>
private static bool TryUriStringToByteArray(string text, out byte[] targetValue)
{
Debug.Assert(text != null, "text != null");
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixBinary, ref text))
{
targetValue = null;
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = null;
return(false);
}
try
{
targetValue = Convert.FromBase64String(text);
}
catch (FormatException)
{
targetValue = null;
return(false);
}
return(true);
}
