author | Stefan Vogel <sv@exept.de> |
Thu, 07 Jul 2016 18:21:10 +0200 | |
changeset 20115 | 24e370ff11e3 |
parent 20114 | d9cf803bddb6 |
child 20131 | 4118d61ddba0 |
child 20148 | a0e964e1c7ac |
permissions | -rw-r--r-- |
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"{ Encoding: utf8 }" |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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All Rights Reserved |
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|
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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"{ Package: 'stx:libbasic' }" |
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class: NonPositionableExternalStream
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"{ NameSpace: Smalltalk }" |
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class: NonPositionableExternalStream
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No longer a subclass of UnboundedExternalStream, now subclass of ExternalStream.
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ExternalStream subclass:#NonPositionableExternalStream |
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instanceVariableNames:'' |
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classVariableNames:'StdInStream StdOutStream StdErrorStream' |
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poolDictionaries:'' |
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category:'Streams-External' |
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! |
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!NonPositionableExternalStream primitiveDefinitions! |
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%{ |
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#ifndef _STDIO_H_INCLUDED_ |
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# include <stdio.h> |
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# define _STDIO_H_INCLUDED_ |
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#endif |
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#ifndef REMOVE_LATER |
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# define __win32_stdout() stdout |
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# define __win32_stderr() stderr |
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# define __win32_stdin() stdin |
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#else |
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extern FILE *__win32_stdin(); |
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extern FILE *__win32_stderr(); |
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extern FILE *__win32_stdout(); |
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#endif |
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%} |
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! ! |
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||
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!NonPositionableExternalStream class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
|
177 | 52 |
All Rights Reserved |
88 | 53 |
|
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This software is furnished under a license and may be used |
|
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
|
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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! |
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||
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documentation |
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" |
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This class provides common protocol for all non-positionable, |
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external streams. Concrete subclasses are terminal streams, pipe streams, |
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PrinterStreams, Sockets etc. |
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There are three special instances of this class, representing stdin, |
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stdout and stderr of the smalltalk/X process (see Unix manuals, if you |
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dont know what those are used for). These special streams are bound to |
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to globals Stdin, Stdout and Stderr at early initialization time |
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(see Smalltalk>>initializeStandardStreams). |
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The name of this class is a historical leftover - it should be called |
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'TTYStream' or similar. |
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[author:] |
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Claus Gittinger |
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" |
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! ! |
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!NonPositionableExternalStream class methodsFor:'instance creation'! |
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forStderr |
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"{ Pragma: +optSpace }" |
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"return a NonPositionableExternalStream object for writing to |
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Unixes standard error output file descriptor" |
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StdErrorStream isNil ifTrue:[ |
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StdErrorStream := self basicNew initializeForStderr |
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]. |
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^ StdErrorStream |
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! |
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forStdin |
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"{ Pragma: +optSpace }" |
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"return a NonPositionableExternalStream object for reading from |
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Unixes standard input file descriptor" |
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StdInStream isNil ifTrue:[ |
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StdInStream := self basicNew initializeForStdin |
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]. |
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^ StdInStream |
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! |
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forStdout |
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"{ Pragma: +optSpace }" |
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||
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"return a NonPositionableExternalStream object for writing to |
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Unixes standard output file descriptor" |
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StdOutStream isNil ifTrue:[ |
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StdOutStream := self basicNew initializeForStdout |
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]. |
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^ StdOutStream |
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! |
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makePTYPair |
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"return an array with two streams - the first one is the master, |
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the second the slave of a ptym/ptys pair. |
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This is much like a bidirectional pipe, but allows signals & |
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control chars to be passed through the connection. |
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This is needed to execute a shell in a view. |
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This is the higher level equivalent of OperatingSystem>>makePTYPair |
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(which returns an array of file-descriptors)." |
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|ptyPair master slave| |
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ptyPair := OperatingSystem makePTYPair. |
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ptyPair notNil ifTrue:[ |
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master := self forReadWriteToFileDescriptor:(ptyPair at:1). |
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master buffered:false. |
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slave := self forReadWriteToFileDescriptor:(ptyPair at:2). |
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slave buffered:false. |
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ptyPair at:1 put:master. |
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ptyPair at:2 put:slave. |
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^ ptyPair |
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]. |
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^ nil |
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" |
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ExternalStream makePTYPair. |
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" |
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"Modified: 29.2.1996 / 18:28:36 / cg" |
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! |
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makePipe |
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"return an array with two streams - the first one for reading, |
153 |
the second for writing. |
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This is the higher level equivalent of OperatingSystem>>makePipe |
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(which returns an array of file-descriptors)." |
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|
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|pipe rs ws| |
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|
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#retry makePipe after a failed try and garbageCollection
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pipe := OperatingSystem makePipe. |
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pipe isNil ifTrue:[ |
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"/ ok, maybe someone has forgotten to close a stream; enforce finalization and try again |
162 |
'makePipe: enforcing finalization to close any open streams' infoPrintCR. |
|
163 |
ObjectMemory garbageCollect; finalize. |
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164 |
pipe := OperatingSystem makePipe. |
|
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#retry makePipe after a failed try and garbageCollection
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165 |
]. |
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filePointer -> handle migration
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166 |
|
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167 |
pipe notNil ifTrue:[ |
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rs := self forFileDescriptor:(pipe at:1) mode:#readonly buffered:false handleType:#pipeFilePointer. |
169 |
ws := self forFileDescriptor:(pipe at:2) mode:#writeonly buffered:false handleType:#pipeFilePointer. |
|
170 |
^ Array with:rs with:ws |
|
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171 |
]. |
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172 |
^ nil |
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|
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" |
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|pipe rs ws| |
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176 |
|
7541 | 177 |
pipe := NonPositionableExternalStream makePipe. |
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rs := pipe at:1. |
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ws := pipe at:2. |
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|
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'read ...'. |
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182 |
[ |
16348 | 183 |
1 to:10 do:[:i | |
184 |
Transcript showCR:rs nextLine |
|
185 |
]. |
|
186 |
rs close. |
|
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] forkAt:7. |
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188 |
|
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'write ...'. |
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190 |
[ |
16348 | 191 |
1 to:10 do:[:i | |
192 |
ws nextPutAll:'hello world '; nextPutAll:i printString; cr |
|
193 |
]. |
|
194 |
ws close. |
|
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195 |
] fork. |
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" |
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"Modified: 29.2.1996 / 18:28:36 / cg" |
613 | 199 |
! ! |
200 |
||
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201 |
!NonPositionableExternalStream methodsFor:'accessing'! |
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|
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203 |
buffered:aBoolean |
16348 | 204 |
"do not allow to change to buffered mode - ignore true here" |
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205 |
|
16348 | 206 |
aBoolean ifFalse:[ |
207 |
super buffered:false. |
|
208 |
]. |
|
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! ! |
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210 |
|
613 | 211 |
!NonPositionableExternalStream methodsFor:'error handling'! |
212 |
||
213 |
positionError |
|
2965 | 214 |
"{ Pragma: +optSpace }" |
215 |
||
613 | 216 |
"notify that this stream has no concept of a position" |
217 |
||
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218 |
^ PositionError raiseRequestWith:self |
4559 | 219 |
|
220 |
" |
|
221 |
Stderr positionError |
|
222 |
" |
|
19073 | 223 |
! |
224 |
||
225 |
writeError:errorNumber |
|
226 |
"report an error, that some write error occured. |
|
227 |
Redefined to care for writeErrors on stdout and stderr, |
|
228 |
which happens under linux, if the console is closed while I am running. |
|
229 |
In this case, we ignore the error." |
|
230 |
||
231 |
((self == Stderr) or:[self == Stdout]) ifTrue:[ |
|
19860
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unified cpu and os defines;
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232 |
^ self |
19073 | 233 |
]. |
234 |
super writeError:errorNumber |
|
613 | 235 |
! ! |
236 |
||
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!NonPositionableExternalStream methodsFor:'initialization'! |
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|
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initialize |
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"non-positionable streams do not work well when buffered" |
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|
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242 |
super initialize. |
20105 | 243 |
position := nil. "I am not positionable (reading and writing simultaneously)" |
15922 | 244 |
buffered := false. |
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! ! |
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!NonPositionableExternalStream methodsFor:'non homogenous reading'! |
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|
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nextBytes:count into:anObject startingAt:start |
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|
250 |
"read the next count bytes into an object and return the number of |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
251 |
bytes read or the number of bytes read, if EOF is encountered before. |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
252 |
An exception is raised if the connection is broken. |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
253 |
|
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
254 |
Redefined here to avoid blocking of ST/X when waiting for io. |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
7682
diff
changeset
|
255 |
Instead only the calling thread will block" |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
7682
diff
changeset
|
256 |
|
8815 | 257 |
|remaining offset nRead| |
7861
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
258 |
|
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
7682
diff
changeset
|
259 |
count == 0 ifTrue:[ |
10327 | 260 |
^ 0. |
7861
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
7682
diff
changeset
|
261 |
]. |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
262 |
|
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Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
7682
diff
changeset
|
263 |
remaining := count. |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
Stefan Vogel <sv@exept.de>
parents:
7682
diff
changeset
|
264 |
offset := start. |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
7682
diff
changeset
|
265 |
|
10327 | 266 |
[ |
267 |
nRead := self nextAvailableBytes:remaining into:anObject startingAt:offset. |
|
268 |
nRead == 0 ifTrue:[ |
|
269 |
"atEnd does a readWait" |
|
270 |
self atEnd not. |
|
271 |
] ifFalse:[ |
|
272 |
remaining := remaining - nRead. |
|
273 |
offset := offset + nRead. |
|
274 |
remaining ~~ 0. |
|
275 |
] |
|
7861
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
276 |
] whileTrue. |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
277 |
|
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Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
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parents:
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diff
changeset
|
278 |
^ count - remaining |
20105 | 279 |
! |
280 |
||
281 |
nextInt16MSB:msbFlag |
|
282 |
"redefined to wait for data on pipes and sockets" |
|
283 |
||
284 |
|bytes nRead| |
|
285 |
||
286 |
bytes := ByteArray uninitializedNew:2. |
|
287 |
nRead := self nextBytes:2 into:bytes startingAt:1. |
|
288 |
nRead ~~ 2 ifTrue:[ |
|
289 |
^ self pastEndRead. |
|
290 |
]. |
|
291 |
^ bytes signedInt16At:1 MSB:msbFlag. |
|
292 |
! |
|
293 |
||
294 |
nextInt32MSB:msbFlag |
|
295 |
"redefined to wait for data on pipes and sockets" |
|
296 |
||
297 |
|bytes nRead| |
|
298 |
||
299 |
bytes := ByteArray uninitializedNew:4. |
|
300 |
nRead := self nextBytes:4 into:bytes startingAt:1. |
|
301 |
nRead ~~ 4 ifTrue:[ |
|
302 |
^ self pastEndRead. |
|
303 |
]. |
|
304 |
^ bytes signedInt32At:1 MSB:msbFlag. |
|
305 |
! |
|
306 |
||
307 |
nextUnsignedInt16MSB:msbFlag |
|
308 |
"redefined to wait for data on pipes and sockets" |
|
309 |
||
310 |
|bytes nRead| |
|
311 |
||
312 |
bytes := ByteArray uninitializedNew:4. |
|
313 |
nRead := self nextBytes:2 into:bytes startingAt:1. |
|
314 |
nRead ~~ 2 ifTrue:[ |
|
315 |
^ self pastEndRead. |
|
316 |
]. |
|
317 |
^ bytes unsignedInt16At:1 MSB:msbFlag. |
|
318 |
! |
|
319 |
||
320 |
nextUnsignedInt32MSB:msbFlag |
|
321 |
"redefined to wait for data on pipes and sockets" |
|
322 |
||
323 |
|bytes nRead| |
|
324 |
||
325 |
bytes := ByteArray uninitializedNew:4. |
|
326 |
nRead := self nextBytes:4 into:bytes startingAt:1. |
|
327 |
nRead ~~ 4 ifTrue:[ |
|
328 |
^ self pastEndRead. |
|
329 |
]. |
|
330 |
^ bytes unsignedInt32At:1 MSB:msbFlag. |
|
7861
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
Stefan Vogel <sv@exept.de>
parents:
7682
diff
changeset
|
331 |
! ! |
9c2cd42e4667
Provide a #nextBytes:into:startingAt: that does not block the whole ST/X
Stefan Vogel <sv@exept.de>
parents:
7682
diff
changeset
|
332 |
|
613 | 333 |
!NonPositionableExternalStream methodsFor:'positioning'! |
334 |
||
335 |
position |
|
20105 | 336 |
position isNil ifTrue:[ |
337 |
^ self positionError. |
|
338 |
]. |
|
339 |
^ position |
|
1 | 340 |
! |
341 |
||
20105 | 342 |
position:newPosition |
343 |
(position isNil or:[newPosition < position]) ifTrue:[ |
|
344 |
"there is no turning back" |
|
345 |
^ self positionError |
|
346 |
]. |
|
347 |
self skip:newPosition - position. |
|
613 | 348 |
! |
44 | 349 |
|
613 | 350 |
skip:numberToSkip |
7241 | 351 |
"skip count bytes/characters, return the receiver. |
352 |
Re-redefined since PositionableStream redefined it." |
|
613 | 353 |
|
16207
923f92b4f0e8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16187
diff
changeset
|
354 |
"don't know how to unread ..." |
613 | 355 |
numberToSkip < 0 ifTrue:[ |
20105 | 356 |
^ self positionError. |
88 | 357 |
]. |
16207
923f92b4f0e8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16187
diff
changeset
|
358 |
numberToSkip timesRepeat:[self next]. |
4467 | 359 |
|
360 |
"Modified: / 30.7.1999 / 12:42:12 / cg" |
|
1 | 361 |
! ! |
362 |
||
177 | 363 |
!NonPositionableExternalStream methodsFor:'printing & storing'! |
364 |
||
365 |
printOn:aStream |
|
2965 | 366 |
"{ Pragma: +optSpace }" |
367 |
||
4392 | 368 |
"append a user printed representation of the receiver to aStream. |
369 |
The format is suitable for a human - not meant to be read back." |
|
177 | 370 |
|
2965 | 371 |
|myName| |
372 |
||
177 | 373 |
self == Stdin ifTrue:[ |
10327 | 374 |
myName := 'Stdin'. |
2965 | 375 |
] ifFalse:[ |
10327 | 376 |
self == Stdout ifTrue:[ |
377 |
myName := 'Stdout'. |
|
378 |
] ifFalse:[ |
|
379 |
self == Stderr ifTrue:[ |
|
380 |
myName := 'Stderr'. |
|
381 |
] |
|
382 |
] |
|
177 | 383 |
]. |
2965 | 384 |
|
385 |
myName notNil ifTrue:[ |
|
10327 | 386 |
aStream nextPutAll:myName. |
387 |
^ self |
|
177 | 388 |
]. |
389 |
super printOn:aStream |
|
390 |
! |
|
391 |
||
392 |
storeOn:aStream |
|
2965 | 393 |
"{ Pragma: +optSpace }" |
394 |
||
213 | 395 |
"append a printed representation of the receiver on aStream, from |
396 |
which the receiver can be reconstructed." |
|
177 | 397 |
|
398 |
((self == Stdin) |
|
399 |
or:[self == Stdout |
|
400 |
or:[self == Stderr]]) ifTrue:[ |
|
401 |
^ self printOn:aStream |
|
402 |
]. |
|
403 |
super storeOn:aStream |
|
404 |
! ! |
|
405 |
||
613 | 406 |
!NonPositionableExternalStream methodsFor:'private'! |
360 | 407 |
|
5407 | 408 |
handleForStderr |
409 |
"{ Pragma: +optSpace }" |
|
410 |
||
411 |
"return a stderr handle" |
|
412 |
||
413 |
%{ |
|
18313 | 414 |
#ifdef __SCHTEAM__ |
415 |
return context._RETURN( StandardErrorStream ); |
|
416 |
#else |
|
19860
324edacff5cc
unified cpu and os defines;
Claus Gittinger <cg@exept.de>
parents:
19073
diff
changeset
|
417 |
# ifdef __win32__ |
12677
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
418 |
RETURN ( __MKEXTERNALADDRESS( __win32_stderr() )); |
18313 | 419 |
# else |
12677
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
420 |
RETURN ( __MKEXTERNALADDRESS(stderr) ); |
18313 | 421 |
# endif |
10327 | 422 |
#endif |
5407 | 423 |
%} |
424 |
! |
|
425 |
||
426 |
handleForStdin |
|
427 |
"{ Pragma: +optSpace }" |
|
428 |
||
429 |
"return a stdin handle" |
|
430 |
||
431 |
%{ |
|
18313 | 432 |
#ifdef __SCHTEAM__ |
433 |
return context._RETURN( StandardInputStream ); |
|
434 |
#else |
|
19860
324edacff5cc
unified cpu and os defines;
Claus Gittinger <cg@exept.de>
parents:
19073
diff
changeset
|
435 |
# ifdef __win32__ |
12677
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
436 |
RETURN ( __MKEXTERNALADDRESS( __win32_stdin() )); |
18313 | 437 |
# else |
12677
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
438 |
RETURN ( __MKEXTERNALADDRESS(stdin) ); |
18313 | 439 |
# endif |
10327 | 440 |
#endif |
5407 | 441 |
%} |
442 |
! |
|
443 |
||
444 |
handleForStdout |
|
445 |
"{ Pragma: +optSpace }" |
|
446 |
||
447 |
"return a stdout handle" |
|
448 |
||
449 |
%{ |
|
18313 | 450 |
#ifdef __SCHTEAM__ |
451 |
return context._RETURN( StandardOutputStream ); |
|
452 |
#else |
|
19860
324edacff5cc
unified cpu and os defines;
Claus Gittinger <cg@exept.de>
parents:
19073
diff
changeset
|
453 |
# ifdef __win32__ |
12677
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
454 |
RETURN ( __MKEXTERNALADDRESS( __win32_stdout() )); |
18313 | 455 |
# else |
12677
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
456 |
RETURN ( __MKEXTERNALADDRESS(stdout) ); |
18313 | 457 |
# endif |
10327 | 458 |
#endif |
5407 | 459 |
%} |
460 |
! |
|
461 |
||
613 | 462 |
initializeForStderr |
2965 | 463 |
"{ Pragma: +optSpace }" |
464 |
||
613 | 465 |
"setup for writing to stderr" |
269 | 466 |
|
20105 | 467 |
mode := #writeonly. "since stderr may be redirected to a pipe, reading is forbidden" |
613 | 468 |
buffered := false. |
20105 | 469 |
position := 0. "only writing - can keep track of position" |
12395
1db7ea277c93
filePointer -> handle migration
Claus Gittinger <cg@exept.de>
parents:
11907
diff
changeset
|
470 |
handle := self handleForStderr. |
12754 | 471 |
handleType := #filePointer. |
5407 | 472 |
OperatingSystem isMSWINDOWSlike ifTrue:[ |
20105 | 473 |
eolMode := #crlf |
5407 | 474 |
] |
613 | 475 |
! |
1 | 476 |
|
477 |
initializeForStdin |
|
2965 | 478 |
"{ Pragma: +optSpace }" |
479 |
||
44 | 480 |
"setup for reading stdin" |
481 |
||
1 | 482 |
mode := #readonly. |
6843
ef53f65b7364
stdout/err must not be buffered (sending prompts without NL)
Claus Gittinger <cg@exept.de>
parents:
5918
diff
changeset
|
483 |
"/ buffered := true. |
ef53f65b7364
stdout/err must not be buffered (sending prompts without NL)
Claus Gittinger <cg@exept.de>
parents:
5918
diff
changeset
|
484 |
buffered := false. |
20105 | 485 |
position := 0. "only reading - can keep track of position" |
12754 | 486 |
handleType := #filePointer. |
12395
1db7ea277c93
filePointer -> handle migration
Claus Gittinger <cg@exept.de>
parents:
11907
diff
changeset
|
487 |
handle := self handleForStdin. |
1 | 488 |
! |
489 |
||
490 |
initializeForStdout |
|
2965 | 491 |
"{ Pragma: +optSpace }" |
492 |
||
44 | 493 |
"setup for writing to stdout" |
494 |
||
20105 | 495 |
mode := #writeonly. "since stdout may be redirected to a pipe, reading is forbidden" |
10 | 496 |
buffered := false. |
20105 | 497 |
position := 0. "only writing - can keep track of position" |
12395
1db7ea277c93
filePointer -> handle migration
Claus Gittinger <cg@exept.de>
parents:
11907
diff
changeset
|
498 |
handle := self handleForStdout. |
12754 | 499 |
handleType := #filePointer. |
5407 | 500 |
OperatingSystem isMSWINDOWSlike ifTrue:[ |
20105 | 501 |
eolMode := #crlf |
5407 | 502 |
] |
1 | 503 |
! |
504 |
||
505 |
reOpen |
|
2965 | 506 |
"{ Pragma: +optSpace }" |
507 |
||
44 | 508 |
"reopen the stream after an image restart. |
509 |
If I am one of the standard streams, reopen is easy" |
|
1 | 510 |
|
477
8710aba7876b
oops - making id's real objects requires a store macro
Claus Gittinger <cg@exept.de>
parents:
475
diff
changeset
|
511 |
(self == StdInStream) ifTrue:[ |
177 | 512 |
^ self initializeForStdin |
1 | 513 |
]. |
477
8710aba7876b
oops - making id's real objects requires a store macro
Claus Gittinger <cg@exept.de>
parents:
475
diff
changeset
|
514 |
(self == StdOutStream) ifTrue:[ |
177 | 515 |
^ self initializeForStdout |
1 | 516 |
]. |
477
8710aba7876b
oops - making id's real objects requires a store macro
Claus Gittinger <cg@exept.de>
parents:
475
diff
changeset
|
517 |
(self == StdErrorStream) ifTrue:[ |
177 | 518 |
^ self initializeForStderr |
1 | 519 |
]. |
520 |
^ super reOpen |
|
521 |
! ! |
|
613 | 522 |
|
523 |
!NonPositionableExternalStream methodsFor:'queries'! |
|
524 |
||
5851
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
525 |
atEnd |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
526 |
"return true, if position is at end" |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
527 |
|
5918 | 528 |
(self == StdInStream) ifTrue:[ |
19860
324edacff5cc
unified cpu and os defines;
Claus Gittinger <cg@exept.de>
parents:
19073
diff
changeset
|
529 |
OperatingSystem hasConsole ifFalse:[ |
324edacff5cc
unified cpu and os defines;
Claus Gittinger <cg@exept.de>
parents:
19073
diff
changeset
|
530 |
^ true |
324edacff5cc
unified cpu and os defines;
Claus Gittinger <cg@exept.de>
parents:
19073
diff
changeset
|
531 |
] |
5918 | 532 |
]. |
533 |
||
5851
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
534 |
"first, wait to avoid blocking on the read. |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
535 |
On end of stream or error, readWait will return" |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
536 |
|
18798 | 537 |
self readWaitWithTimeoutMs:nil. |
5851
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
538 |
^ super atEnd. |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
539 |
! |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
540 |
|
17607
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
541 |
collectionSize |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
542 |
"we do not know our size" |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
543 |
|
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
544 |
^ self positionError |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
545 |
! |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
546 |
|
5407 | 547 |
isPositionable |
548 |
"return true, if the stream supports positioning (this one is not)" |
|
549 |
||
550 |
^ false |
|
11455 | 551 |
! |
552 |
||
17607
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
553 |
remainingSize |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
554 |
"we do not know our size" |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
555 |
|
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
556 |
^ self positionError |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
557 |
! |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
558 |
|
12395
1db7ea277c93
filePointer -> handle migration
Claus Gittinger <cg@exept.de>
parents:
11907
diff
changeset
|
559 |
size |
11455 | 560 |
"we do not know our size" |
561 |
||
562 |
^ self positionError |
|
613 | 563 |
! ! |
564 |
||
10349
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
565 |
!NonPositionableExternalStream methodsFor:'reading'! |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
566 |
|
14758
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
567 |
next |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
568 |
"return the next element, if available. |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
569 |
If nothing is available, this does never raise a read-beyond end signal. |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
570 |
Instead, nil is returned immediately. |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
571 |
|
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
572 |
Redefined, to wait on pipes and sockets" |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
573 |
|
18798 | 574 |
self readWaitWithTimeoutMs:nil. |
14758
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
575 |
^ super next |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
576 |
! |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
577 |
|
20105 | 578 |
nextByte |
579 |
"redefined, to wait on pipes and sockets" |
|
15796
b3fdd3c2aec2
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
15720
diff
changeset
|
580 |
|
18798 | 581 |
self readWaitWithTimeoutMs:nil. |
20105 | 582 |
^ super nextByte |
583 |
! |
|
584 |
||
585 |
nextLine |
|
586 |
"return the characters upTo (but excluding) the next cr (carriage return) |
|
587 |
character (i.e. read a single line of text). |
|
588 |
If the previous-to-last character is a cr, this is also removed, |
|
589 |
so it's possible to read alien (i.e. ms-dos) text as well. |
|
590 |
Redefined to not block forever if no cr is read." |
|
591 |
||
20113 | 592 |
|answerStream char available "{ Class:SmallInteger }" wasBinary| |
20105 | 593 |
|
20112 | 594 |
answerStream := WriteStream on:(String uninitializedNew:80). |
20105 | 595 |
[ |
596 |
available := self numAvailableForRead. |
|
20113 | 597 |
wasBinary := binary. "temporarily set to text mode" |
598 |
binary := false. |
|
20105 | 599 |
available timesRepeat:[ |
20113 | 600 |
char := super next. "we know that there is data" |
20105 | 601 |
char == Character cr ifTrue:[ |
602 |
(answerStream size ~~ 0 and:[answerStream last == Character return]) ifTrue:[ |
|
603 |
answerStream backStep. |
|
604 |
]. |
|
20113 | 605 |
binary := wasBinary. |
20105 | 606 |
^ answerStream contents. |
607 |
]. |
|
608 |
answerStream nextPut:char. |
|
609 |
]. |
|
20113 | 610 |
binary := wasBinary. "restore saved mode" |
611 |
||
20105 | 612 |
"#atEnd waits for new data or EOF" |
613 |
self atEnd ifTrue:[ |
|
614 |
answerStream size == 0 ifTrue:[ |
|
615 |
^ self pastEndRead. |
|
616 |
]. |
|
617 |
^ answerStream contents. |
|
618 |
]. |
|
619 |
] loop. |
|
620 |
||
621 |
"not reached" |
|
15796
b3fdd3c2aec2
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
15720
diff
changeset
|
622 |
! |
b3fdd3c2aec2
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
15720
diff
changeset
|
623 |
|
10349
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
624 |
nextOrNil |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
625 |
"like #next, this returns the next element, if available. |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
626 |
If nothing is available, this does never raise a read-beyond end signal. |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
627 |
Instead, nil is returned immediately. |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
628 |
|
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
629 |
Redefined, to wait on pipes and sockets" |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
630 |
|
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
631 |
self atEnd ifTrue:[^ nil]. |
14758
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
632 |
^ super nextOrNil |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
633 |
! |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
634 |
|
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
635 |
peek |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
636 |
"Redefined, to wait on pipes and sockets" |
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
637 |
|
18798 | 638 |
self readWaitWithTimeoutMs:nil. |
14758
6a70a7006093
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
12754
diff
changeset
|
639 |
^ super peek |
10349
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
640 |
! |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
641 |
|
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
642 |
peekOrNil |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
643 |
"like #peek, this returns the next element, if available. |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
644 |
If nothing is available, this does never raise a read-beyond end signal. |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
645 |
Instead, nil is returned immediately. |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
646 |
|
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
647 |
Redefined, to wait on pipes and sockets" |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
648 |
|
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
649 |
self atEnd ifTrue:[^ nil]. |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
650 |
^ self peek |
18798 | 651 |
! |
652 |
||
20105 | 653 |
upTo:anObject into:aStream |
654 |
"read a collection of all objects up-to anObject and append these |
|
655 |
elements to aStream, but excluding anObject. |
|
656 |
The next read operation will return the element after anObject. |
|
657 |
(i.e. anObject is considered a separator, which is skipped) |
|
658 |
Similar to #through:, but the matching object is not included in the returned collection. |
|
659 |
If anObject is not encountered, all elements up to the end are read and returned. |
|
660 |
Compare this with #through: which also reads up to some object |
|
661 |
and also positions behind it, but DOES include it in the returned value." |
|
662 |
||
663 |
|element available "{ Class:SmallInteger }"| |
|
18798 | 664 |
|
20105 | 665 |
[ |
666 |
available := self numAvailableForRead. |
|
667 |
available timesRepeat:[ |
|
668 |
element := super next. "we know that there is data" |
|
669 |
element = anObject ifTrue:[ |
|
670 |
^ self. |
|
671 |
]. |
|
672 |
aStream nextPut:element. |
|
673 |
]. |
|
674 |
"#atEnd waits for new data or EOF" |
|
675 |
self atEnd ifTrue:[ |
|
676 |
^ self. |
|
677 |
]. |
|
678 |
] loop. |
|
679 |
||
680 |
"not reached" |
|
10349
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
681 |
! ! |
cbfa00bba11d
Speedup ExternalStream>>#nextOrNil and ExternalStream>>#peekOrNil.
Stefan Vogel <sv@exept.de>
parents:
10327
diff
changeset
|
682 |
|
7497
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
683 |
!NonPositionableExternalStream methodsFor:'writing'! |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
684 |
|
17642
5988beff84f7
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
17607
diff
changeset
|
685 |
nextPutAll:aCollection |
5988beff84f7
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
17607
diff
changeset
|
686 |
"nextPutBytes handles non-blocking io in receiver" |
5988beff84f7
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
17607
diff
changeset
|
687 |
|
5988beff84f7
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
17607
diff
changeset
|
688 |
self nextPutBytes:aCollection size from:aCollection startingAt:1. |
5988beff84f7
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
17607
diff
changeset
|
689 |
^ self. |
5988beff84f7
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
17607
diff
changeset
|
690 |
! |
5988beff84f7
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
17607
diff
changeset
|
691 |
|
17607
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
692 |
nextPutAll:aCollection startingAt:start to:stop |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
693 |
"redefined, to wait until stream is writable, to avoid blocking in a write" |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
694 |
|
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
695 |
|count| |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
696 |
|
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
697 |
count := stop-start+1. |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
698 |
count ~= (self nextPutBytes:count from:aCollection startingAt:start) ifTrue:[ |
18313 | 699 |
"incomplete write" |
700 |
self writeError. |
|
17607
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
701 |
]. |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
702 |
! |
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
703 |
|
7679 | 704 |
nextPutBytes:initialWriteCount from:buffer startingAt:initialOffset |
705 |
"redefined, to wait until stream is writable, to avoid blocking in a write" |
|
7497
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
706 |
|
17607
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
707 |
|offset remaining wasBlocking| |
7497
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
708 |
|
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
709 |
offset := initialOffset. |
7679 | 710 |
remaining := initialWriteCount. |
7497
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
711 |
|
7679 | 712 |
wasBlocking := self blocking:false. |
10327 | 713 |
[remaining ~~ 0] whileTrue:[ |
18313 | 714 |
|count| |
17607
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
715 |
|
18313 | 716 |
count := super nextPutBytes:remaining from:buffer startingAt:offset. |
7682
5d43745f59ac
only do a writeWait if previous non-blocking write failed to
Claus Gittinger <cg@exept.de>
parents:
7679
diff
changeset
|
717 |
|
18313 | 718 |
remaining := remaining - count. |
719 |
offset := offset + count. |
|
720 |
remaining ~~ 0 ifTrue:[ |
|
721 |
"Transcript showCR:'writeWait'." |
|
722 |
self writeWait. |
|
723 |
]. |
|
7497
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
724 |
]. |
7679 | 725 |
wasBlocking ifTrue:[self blocking:true]. |
726 |
||
7497
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
727 |
^ offset - initialOffset. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
728 |
! ! |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
729 |
|
1295 | 730 |
!NonPositionableExternalStream class methodsFor:'documentation'! |
731 |
||
732 |
version |
|
18798 | 733 |
^ '$Header$' |
12677
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
734 |
! |
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
735 |
|
aeab74b04f0b
Use __MKEXTERNALADDRESS() instead of __MKOBJ()
Stefan Vogel <sv@exept.de>
parents:
12395
diff
changeset
|
736 |
version_CVS |
18798 | 737 |
^ '$Header$' |
1295 | 738 |
! ! |
17607
224f253b60c8
class: NonPositionableExternalStream
Stefan Vogel <sv@exept.de>
parents:
16348
diff
changeset
|
739 |