Qore Programming Language Reference Manual  0.9.4.5
Qore::EncodingConversionOutputStream Class Reference

An OutputStream implementation that performs on-the-fly conversion between two character encodings. More...

Inheritance diagram for Qore::EncodingConversionOutputStream:

Public Member Methods

nothing close ()
 Flushes any buffered (unwritten) bytes, closes the output stream and releases all resources. More...
 
 constructor (Qore::OutputStream os, string sourceEncoding, string destEncoding)
 Creates the EncodingConversionOutputStream based on the OutputStream given. More...
 
nothing write (binary data)
 Writes bytes to the output stream. More...
 
- Public Member Methods inherited from Qore::OutputStream
 constructor ()
 Constructor. More...
 
- Public Member Methods inherited from Qore::StreamBase
 constructor ()
 Throws an exception if called directly; this class can only be instantiated by builtin subclasses. More...
 
int getThreadId ()
 Get the currently assigned thread id or -1 if not assigned to any thread.
 
nothing reassignThread ()
 Reassigns current thread as thread used for stream manipulation. More...
 
nothing unassignThread ()
 Unassigns current thread as thread used for stream manipulation. More...
 

Detailed Description

An OutputStream implementation that performs on-the-fly conversion between two character encodings.

Example: EncodingConversionOutputStream basic usage
EncodingConversionOutputStream latin2Stream(destUtf8Stream, "ISO-8859-2", "UTF-8");
latin2Stream.write(latin2Data); #writes UTF-8 equivalents to destUtf8Stream
Note
stream classes are not designed to be accessed from multiple threads; they have been implemented without locking for fast and efficient use when used from a single thread. For methods that would be unsafe to use in another thread, any use of such methods in threads other than the thread where the constructor was called will cause a STREAM-THREAD-ERROR to be thrown, unless the stream is handed off to another thread using the StreamBase::unassignThread() method in the thread that currently owns the stream, and the StreamBase::reassignThread() method in the new thread.
See also
StreamWriter for a class that can be used to write various kinds of data to an OutputStream
Since
Qore 0.8.13

Member Function Documentation

◆ close()

nothing Qore::EncodingConversionOutputStream::close ( )
virtual

Flushes any buffered (unwritten) bytes, closes the output stream and releases all resources.

Any methods called on a closed output stream will throw an exception.

Exceptions
OUTPUT-STREAM-CLOSED-ERRORthe output stream has already been closed
STREAM-THREAD-ERRORthis exception is thrown if this method is called from any thread other than the thread that created the object

Implements Qore::OutputStream.

◆ constructor()

Qore::EncodingConversionOutputStream::constructor ( Qore::OutputStream  os,
string  sourceEncoding,
string  destEncoding 
)

Creates the EncodingConversionOutputStream based on the OutputStream given.

Parameters
osthe destination OutputStream to write bytes to
sourceEncodingthe encoding of the characters that will be written to this stream
destEncodingthe destination character encoding that will be written to the underlying OutputStream os
Exceptions
ENCODING-CONVERSION-ERRORif either of the encodings is unsupported

◆ write()

nothing Qore::EncodingConversionOutputStream::write ( binary  data)
virtual

Writes bytes to the output stream.

Parameters
datathe data to write
Example:
EncodingConversionOutputStream ecos();
bos.write(<6162>);
bos.write(<63>);
Exceptions
OUTPUT-STREAM-CLOSED-ERRORthe output stream has already been closed
STREAM-THREAD-ERRORthis exception is thrown if this method is called from any thread other than the thread that created the object

Implements Qore::OutputStream.