Public Member Functions | |
| Asn1OutputStream (System.IO.Stream os) | |
| override void | Close () |
| override void | Flush () |
| override int | Read (byte[] buffer, int offset, int count) |
| override long | Seek (long offset, System.IO.SeekOrigin origin) |
| override void | SetLength (long value) |
| virtual void | Write (byte[] b) |
| override void | Write (System.Byte[] b, int off, int len) |
| void | Write2Bytes (int value) |
| void | Write4Bytes (int value) |
| virtual void | WriteByte (int b) |
| override void | WriteByte (byte b) |
Properties | |
| override bool | CanRead [get] |
| override bool | CanSeek [get] |
| override bool | CanWrite [get] |
| Asn1Context | Context [get] |
| override long | Length [get] |
| override long | Position [get, set] |
Detailed Description
This abstract class implements the base output stream to encode ASN.1 messages.
Constructor & Destructor Documentation
◆ Asn1OutputStream()
| Asn1OutputStream | ( | System.IO.Stream | os | ) |
This constructor creates an output stream object.
- Parameters
-
os The underlying System.IO.Stream object.
Member Function Documentation
◆ Close()
| override void Close | ( | ) |
Closes this output stream and releases any system resources associated with this stream. The general contract of close is that it closes the output stream. A closed stream cannot perform output operations and cannot be reopened.
- Exceptions
-
System.IO.IOException An error occurred while trying to close the stream.
◆ Flush()
| override void Flush | ( | ) |
Flushes this output stream and forces any buffered output bytes to be written out. The general contract of flush is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.
- Exceptions
-
System.IO.IOException An I/O error occurs. System.ObjectDisposedException The stream is closed.
◆ Read()
| override int Read | ( | byte [] | buffer, |
| int | offset, | ||
| int | count | ||
| ) |
This method always throws NotSupportedException. Asn1OutputStream doesn't support reading.
- Parameters
-
buffer When this method returns, contains the specified byte array with the values between offset and (offset + count - 1) replaced by the bytes read from the current source. offset The byte offset in array at which to begin reading. count The maximum number of bytes to read.
- Returns
- The total number of bytes read into the buffer.
- Exceptions
-
System.NotSupportedException The stream does not support reading.
◆ Seek()
| override long Seek | ( | long | offset, |
| System.IO.SeekOrigin | origin | ||
| ) |
Sets the current position of this stream to the given value.
- Parameters
-
offset The point relative to origin from which to begin seeking. origin Specifies the beginning, the end, or the current position as a reference point for origin, using a value of type SeekOrigin.
- Returns
- The new position in the stream.
- Exceptions
-
System.IO.IOException An I/O error occurs. System.NotSupportedException The stream does not support seeking, such as if the FileStream is constructed from a pipe or console output. System.ArgumentException Attempted seeking before the beginning of the stream. System.ObjectDisposedException Methods were called after the stream was closed.
◆ SetLength()
| override void SetLength | ( | long | value | ) |
Sets the length of this stream to the given value.
- Parameters
-
value The new length of the stream.
- Exceptions
-
System.IO.IOException An I/O error has occurred. System.NotSupportedException The stream does not support both writing and seeking. System.ArgumentOutOfRangeException Attempted to set the value parameter to less than 0.
◆ Write() [1/2]
|
virtual |
Writes b.length bytes from the specified byte array to this output stream. The general contract for write(b) is that it should have exactly the same effect as the call Write(b, 0, b.length).
- Parameters
-
b the data.
- Exceptions
-
System.ArgumentNullException array is a null reference System.ArgumentException offset and count describe an invalid range in array. System.ArgumentOutOfRangeException offset or count is negative. System.IO.IOException An I/O error occurs. System.ObjectDisposedException The stream is closed. System.NotSupportedException The current stream instance does not support writing.
Reimplemented in Asn1PerOutputStream.
Referenced by Asn1Real10.ConvertToDecimal(), Asn1BigInteger.DecodeXML(), Asn1UTF8String.Encode(), Asn1OctetString.Encode(), Asn1Real10.Encode(), Asn1BitString.Encode(), and Asn1OpenType.ToString().
◆ Write() [2/2]
| override void Write | ( | System.Byte [] | b, |
| int | off, | ||
| int | len | ||
| ) |
Writes len bytes from the specified byte array starting at offset off to this output stream.
- Parameters
-
b The byte array data to be written. off The offset in array at which to begin write. len the number of bytes to write.
- Exceptions
-
System.ArgumentNullException array is a null reference System.ArgumentException offset and count describe an invalid range in array. System.ArgumentOutOfRangeException offset or count is negative. System.IO.IOException An I/O error occurs. System.ObjectDisposedException The stream is closed. System.NotSupportedException The current stream instance does not support writing.
◆ Write2Bytes()
| void Write2Bytes | ( | int | value | ) |
Write the lowest two bytes of value to the output stream. The lowest byte is written last.
- Parameters
-
value
Referenced by Asn1OctetString.Encode(), and Asn1Integer.Encode16Bit().
◆ Write4Bytes()
| void Write4Bytes | ( | int | value | ) |
Write the four bytes of value to the output stream. The lowest byte is written last.
- Parameters
-
value
Referenced by Asn1Integer.Encode32Bit().
◆ WriteByte() [1/2]
|
virtual |
Writes the specified byte to this output stream. The general contract for Write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.
- Parameters
-
b the byte.
- Exceptions
-
System.ObjectDisposedException The stream is closed. System.NotSupportedException The stream does not support writing.
Reimplemented in Asn1PerOutputStream.
Referenced by Asn1Real10.ConvertToDecimal(), Asn1Real10.Encode(), Asn1Integer.Encode(), Asn1Real.NormalizedRealValueToString(), and Asn1Boolean.ToString().
◆ WriteByte() [2/2]
| override void WriteByte | ( | byte | b | ) |
Writes the specified byte to this output stream. The general contract for Write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.
- Parameters
-
b the byte.
- Exceptions
-
System.ObjectDisposedException The stream is closed. System.NotSupportedException The stream does not support writing.
Property Documentation
◆ CanRead
|
get |
Gets a value indicating whether the current stream supports reading.
Value: false, the stream doesn't supports reading.
◆ CanSeek
|
get |
Gets a value indicating whether the current stream supports seeking.
Value: true if the stream supports seeking; otherwise, false.
◆ CanWrite
|
get |
Gets a value indicating whether the current stream supports writing.
Value: true if the stream supports writing; otherwise, false.
◆ Context
|
get |
The context associated with this output stream.
◆ Length
|
get |
Gets the length in bytes of the stream.
Value: A long value representing the length of the stream in bytes.
- Exceptions
-
System.NotSupportedException CanSeek for this stream is false. System.IO.IOException An I/O error occurs, such as the file being closed.
◆ Position
|
getset |
Gets or sets the current position of this stream.
Value: The current position of this stream.
- Exceptions
-
System.NotSupportedException The stream does not support seeking. System.IO.IOException An I/O error occurs. System.ArgumentOutOfRangeException Attempted to set the position to a negative value. System.IO.EndOfStreamException Attempted seeking past the end of a stream that does not support this.