/// <summary>
/// It parses the MTI.
/// </summary>
/// <param name="message">
/// The message to be parsed.
/// </param>
/// <param name="parserContext">
/// It's the parser context.
/// </param>
/// <returns>
/// true if the MTI was parsed, otherwise false.
/// </returns>
public override bool BeforeFieldsParsing(Message message,
ref ParserContext parserContext)
{
Field mti = _mtiFormatter.Parse(ref parserContext);
if (mti == null)
{
return(false);
}
try {
(( Iso8583Message)(message)).MessageTypeIdentifier =
Convert.ToInt32(mti.Value, CultureInfo.InvariantCulture);
} catch {
throw new MessagingException(SR.CantParseMti);
}
return(true);
}
public void Parse()
{
ParserContext parseContext = new ParserContext(
ParserContext.DefaultBufferSize);
StringField field;
StringFieldFormatter formatter;
// Setup data for three complete fields an one with partial data.
parseContext.Write("DATA 20 DATA TO BE PARSED009SOME DATA00");
// Test fixed length parse.
formatter = new StringFieldFormatter(37, new FixedLengthManager(12),
StringEncoder.GetInstance());
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNotNull(field);
parseContext.ResetDecodedLength();
Assert.IsTrue(field.FieldValue.Equals("DATA"));
// Test variable length parse with padding.
formatter = new StringFieldFormatter(48, new VariableLengthManager(1, 20,
StringLengthEncoder.GetInstance(99)), StringEncoder.GetInstance(),
SpacePaddingLeft.GetInstance(false), string.Empty);
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNotNull(field);
parseContext.ResetDecodedLength();
Assert.IsTrue(field.FieldValue.Equals("DATA TO BE PARSED"));
// Test variable length parse without padding.
formatter = new StringFieldFormatter(48, new VariableLengthManager(1,
999, StringLengthEncoder.GetInstance(999)), StringEncoder.GetInstance());
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNotNull(field);
parseContext.ResetDecodedLength();
Assert.IsTrue(field.FieldValue.Equals("SOME DATA"));
// Test partial variable length parse without padding.
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNull(field);
parseContext.Write("9MORE D");
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNull(field);
parseContext.Write("ATA");
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNotNull(field);
parseContext.ResetDecodedLength();
Assert.IsTrue(field.FieldValue.Equals("MORE DATA"));
// Test partial fixed parse with padding.
formatter = new StringFieldFormatter(37, new FixedLengthManager(12),
StringEncoder.GetInstance());
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNull(field);
parseContext.Write("ONE MORE");
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNull(field);
parseContext.Write(" ");
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNotNull(field);
parseContext.ResetDecodedLength();
Assert.IsTrue(field.FieldValue.Equals("ONE MORE"));
// Test variable length header with zero length.
formatter = new StringFieldFormatter(48, new VariableLengthManager(0,
999, StringLengthEncoder.GetInstance(999)), StringEncoder.GetInstance());
parseContext.Write("000");
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNotNull(field);
parseContext.ResetDecodedLength();
Assert.IsNull(field.FieldValue);
// Test fixed length parse with validation.
formatter = new StringFieldFormatter(37, new FixedLengthManager(12),
StringEncoder.GetInstance(), ZeroPaddingLeft.GetInstance(false, true),
NumericValidator.GetInstance());
parseContext.Write("000000145000");
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNotNull(field);
parseContext.ResetDecodedLength();
Assert.IsTrue(field.FieldValue.Equals("145000"));
// Try with an invalid value.
parseContext.Write("0000001450F0");
try {
field = ( StringField)formatter.Parse(ref parseContext);
Assert.Fail();
} catch (StringValidationException) {
}
// Test variable length parse with validation.
parseContext.Clear();
parseContext.ResetDecodedLength();
formatter = new StringFieldFormatter(48, new VariableLengthManager(1,
999, StringLengthEncoder.GetInstance(999)), StringEncoder.GetInstance(),
NumericValidator.GetInstance());
parseContext.Write("00532000");
field = ( StringField)formatter.Parse(ref parseContext);
Assert.IsNotNull(field);
parseContext.ResetDecodedLength();
Assert.IsTrue(field.FieldValue.Equals("32000"));
// Try with an invalid value.
parseContext.Write("005350F0");
try {
field = ( StringField)formatter.Parse(ref parseContext);
Assert.Fail();
} catch (StringValidationException) {
}
}
internal protected override string ParseValueText(string text)
{
return(formatter.Parse(text));
}