public static bool TryCopyBMPString(
this AsnReader reader,
Span <char> destination,
out int charsWritten)
{
return(reader.TryReadCharacterString(
destination,
UniversalTagNumber.BMPString,
out charsWritten));
}
private static void TryCopyUTF8String_Throws_Helper(AsnEncodingRules ruleSet, byte[] inputData)
{
char[] outputData = new char[inputData.Length + 1];
outputData[0] = 'a';
int bytesWritten = -1;
AsnReader reader = new AsnReader(inputData, ruleSet);
Assert.Throws <AsnContentException>(
() => reader.TryReadCharacterString(outputData, UniversalTagNumber.UTF8String, out bytesWritten));
Assert.Equal(-1, bytesWritten);
Assert.Equal('a', outputData[0]);
}
public static void TryCopyT61String(
AsnEncodingRules ruleSet,
string inputHex,
string expectedValue)
{
byte[] inputData = inputHex.HexToByteArray();
char[] output = new char[expectedValue.Length];
AsnReader reader = new AsnReader(inputData, ruleSet);
bool copied;
int charsWritten;
if (output.Length > 0)
{
output[0] = 'a';
copied = reader.TryReadCharacterString(
output.AsSpan(0, expectedValue.Length - 1),
UniversalTagNumber.T61String,
out charsWritten);
Assert.False(copied, "reader.TryCopyT61String - too short");
Assert.Equal(0, charsWritten);
Assert.Equal('a', output[0]);
}
copied = reader.TryReadCharacterString(
output,
UniversalTagNumber.T61String,
out charsWritten);
Assert.True(copied, "reader.TryCopyT61String");
string actualValue = new string(output, 0, charsWritten);
Assert.Equal(expectedValue, actualValue);
}
public static void ExpectedTag_IgnoresConstructed(
AsnEncodingRules ruleSet,
string inputHex,
TagClass tagClass,
int tagValue)
{
byte[] inputData = inputHex.HexToByteArray();
Asn1Tag correctCons = new Asn1Tag(tagClass, tagValue, true);
Asn1Tag correctPrim = new Asn1Tag(tagClass, tagValue, false);
AsnReader reader = new AsnReader(inputData, ruleSet);
Assert.True(
reader.TryGetIA5StringBytes(
correctCons,
out ReadOnlyMemory <byte> val1));
Assert.False(reader.HasData);
reader = new AsnReader(inputData, ruleSet);
Assert.True(
reader.TryGetIA5StringBytes(
correctPrim,
out ReadOnlyMemory <byte> val2));
Assert.False(reader.HasData);
Assert.Equal(val1.ByteArrayToHex(), val2.ByteArrayToHex());
#if NETCOREAPP
string expected = Encoding.ASCII.GetString(val1.Span);
#else
string expected = Encoding.ASCII.GetString(val1.ToArray());
#endif
reader = new AsnReader(inputData, ruleSet);
Assert.Equal(expected, reader.ReadCharacterString(UniversalTagNumber.IA5String, correctPrim));
reader = new AsnReader(inputData, ruleSet);
Assert.Equal(expected, reader.ReadCharacterString(UniversalTagNumber.IA5String, correctCons));
char[] output = new char[28];
reader = new AsnReader(inputData, ruleSet);
Assert.True(
reader.TryReadCharacterString(
output.AsSpan(1),
UniversalTagNumber.IA5String,
out int charsWritten,
correctPrim));
Assert.Equal(expected, output.AsSpan(1, charsWritten).ToString());
reader = new AsnReader(inputData, ruleSet);
Assert.True(
reader.TryReadCharacterString(
output.AsSpan(2),
UniversalTagNumber.IA5String,
out charsWritten,
correctCons));
Assert.Equal(expected, output.AsSpan(2, charsWritten).ToString());
}