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Stream subclass:#SplittingWriteStream
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instanceVariableNames:'outStream1 outStream2'
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classVariableNames:''
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poolDictionaries:''
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category:'Streams-Misc'
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!
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!SplittingWriteStream class methodsFor:'documentation'!
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documentation
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"
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A stream duplicator - everything written onto a splittingWriteStream
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is written to two real streams.
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Useful, if you have to send something to two files/destinations
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simultaneously, and do not want to (or cannot) buffer it.
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Especially useful, to generate a checksum,
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while sending something to a file
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(if one of the output streams is a checksummer).
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[author:]
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Claus Gittinger (cg@exept)
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[see also:]
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WriteStream
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[instance variables:]
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outStream1 <Stream> actual output streams
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outStream2 <Stream>
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[class variables:]
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"
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!
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examples
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"
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examples to be added.
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[exBegin]
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|s1 s2 splitter|
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s1 := '/tmp/foo1' asFilename writeStream.
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s2 := '/tmp/foo2' asFilename writeStream.
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splitter := SplittingWriteStream on:s1 and:s2.
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splitter nextPutAll:'hello world'.
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splitter close.
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[exEnd]
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"
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! !
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!SplittingWriteStream class methodsFor:'instance creation'!
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on:stream1 and:stream2
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^ self basicNew setOutStream1:stream1 outStream2:stream2
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! !
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!SplittingWriteStream methodsFor:'private access'!
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setOutStream1:stream1 outStream2:stream2
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outStream1 := stream1.
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outStream2 := stream2.
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! !
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!SplittingWriteStream methodsFor:'writing'!
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close
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outStream1 close.
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outStream2 close.
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!
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endEntry
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outStream1 endEntry.
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outStream2 endEntry.
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!
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flush
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outStream1 flush.
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outStream2 flush.
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!
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nextPut:something
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outStream1 nextPut:something.
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outStream2 nextPut:something.
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!
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nextPutAll:something
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outStream1 nextPutAll:something.
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outStream2 nextPutAll:something.
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! !
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!SplittingWriteStream class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/libbasic2/SplittingWriteStream.st,v 1.1 1999-10-13 19:49:21 cg Exp $'
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! !
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