author | Stefan Vogel <sv@exept.de> |
Mon, 11 Aug 2003 15:28:37 +0200 | |
changeset 7541 | e980e3695dee |
parent 7501 | 3b04d6b5ae78 |
child 7679 | 4c1f76483b6b |
permissions | -rw-r--r-- |
1 | 1 |
" |
5 | 2 |
COPYRIGHT (c) 1989 by Claus Gittinger |
177 | 3 |
All Rights Reserved |
1 | 4 |
|
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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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7 |
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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"{ Package: 'stx:libbasic' }" |
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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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||
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!NonPositionableExternalStream primitiveDefinitions! |
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%{ |
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#ifndef _STDIO_H_INCLUDED_ |
26 |
# include <stdio.h> |
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# define _STDIO_H_INCLUDED_ |
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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 | 39 |
All Rights Reserved |
88 | 40 |
|
41 |
This software is furnished under a license and may be used |
|
42 |
only in accordance with the terms of that license and with the |
|
43 |
inclusion of the above copyright notice. This software may not |
|
44 |
be provided or otherwise made available to, or used by, any |
|
45 |
other person. No title to or ownership of the software is |
|
46 |
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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||
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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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||
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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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||
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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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||
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forStdin |
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"{ Pragma: +optSpace }" |
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||
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"return a NonPositionableExternalStream object for reading from |
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Unixes standard input file descriptor" |
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||
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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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||
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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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||
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StdOutStream isNil ifTrue:[ |
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StdOutStream := self basicNew initializeForStdout |
88 | 104 |
]. |
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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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" |
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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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|
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makePipe |
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"return an array with two streams - the first one for reading, |
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the second for writing. |
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141 |
This is the higher level equivalent of OperatingSystem>>makePipe |
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(which returns an array of file-descriptors)." |
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143 |
|
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|pipe rs ws| |
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|
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146 |
pipe := OperatingSystem makePipe. |
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147 |
|
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pipe notNil ifTrue:[ |
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149 |
rs := self forReadingFromFileDescriptor:(pipe at:1). |
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150 |
rs buffered:false. |
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151 |
ws := self forWritingToFileDescriptor:(pipe at:2). |
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152 |
ws buffered:false. |
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153 |
^ Array with:rs with:ws |
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154 |
]. |
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155 |
^ nil |
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156 |
|
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157 |
" |
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158 |
|pipe rs ws| |
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159 |
|
7541 | 160 |
pipe := NonPositionableExternalStream makePipe. |
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161 |
rs := pipe at:1. |
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162 |
ws := pipe at:2. |
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163 |
|
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164 |
'read ...'. |
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|
165 |
[ |
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166 |
1 to:10 do:[:i | |
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|
167 |
Transcript showCR:rs nextLine |
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168 |
]. |
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169 |
rs close. |
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170 |
] forkAt:7. |
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171 |
|
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172 |
'write ...'. |
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173 |
[ |
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174 |
1 to:10 do:[:i | |
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175 |
ws nextPutAll:'hello world '; nextPutAll:i printString; cr |
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176 |
]. |
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177 |
ws close. |
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178 |
] fork. |
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179 |
" |
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180 |
|
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181 |
"Modified: 29.2.1996 / 18:28:36 / cg" |
613 | 182 |
! ! |
183 |
||
184 |
!NonPositionableExternalStream methodsFor:'error handling'! |
|
185 |
||
186 |
positionError |
|
2965 | 187 |
"{ Pragma: +optSpace }" |
188 |
||
613 | 189 |
"notify that this stream has no concept of a position" |
190 |
||
4559 | 191 |
^ PositionErrorSignal raiseRequestWith:self |
192 |
||
193 |
" |
|
194 |
Stderr positionError |
|
195 |
" |
|
613 | 196 |
! ! |
197 |
||
198 |
!NonPositionableExternalStream methodsFor:'positioning'! |
|
199 |
||
200 |
position |
|
2965 | 201 |
"{ Pragma: +optSpace }" |
202 |
||
613 | 203 |
"catch position - there is none here" |
204 |
||
205 |
^ self positionError |
|
1 | 206 |
! |
207 |
||
613 | 208 |
position:aPosition |
2965 | 209 |
"{ Pragma: +optSpace }" |
210 |
||
613 | 211 |
"catch position - there is none here" |
212 |
||
213 |
^ self positionError |
|
214 |
! |
|
44 | 215 |
|
613 | 216 |
skip:numberToSkip |
7241 | 217 |
"skip count bytes/characters, return the receiver. |
218 |
Re-redefined since PositionableStream redefined it." |
|
613 | 219 |
|
220 |
"dont know how to unread ..." |
|
221 |
numberToSkip < 0 ifTrue:[ |
|
4467 | 222 |
PositionErrorSignal raiseRequest. |
223 |
^ self |
|
88 | 224 |
]. |
613 | 225 |
numberToSkip timesRepeat:self next |
4467 | 226 |
|
227 |
"Modified: / 30.7.1999 / 12:42:12 / cg" |
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228 |
! |
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229 |
|
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230 |
skipThroughAll:aCollection |
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"skip for and through the sequence given by the argument, aCollection; |
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232 |
return nil if not found, the receiver otherwise. |
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233 |
On a successful match, the next read will return elements after aCollection; |
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234 |
if no match was found, the receiver will be positioned at the end. |
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235 |
Redefined to be the same as Stream>>#skipThroughAll, to undo |
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236 |
the redefinition from PositionableStream" |
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237 |
|
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238 |
|buffer l first idx| |
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239 |
|
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240 |
l := aCollection size. |
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241 |
first := aCollection at:1. |
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Redefine #skipThroughAll: to not use #position.
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|
242 |
[self atEnd] whileFalse:[ |
3808
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
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parents:
3173
diff
changeset
|
243 |
buffer isNil ifTrue:[ |
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
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parents:
3173
diff
changeset
|
244 |
buffer := self nextAvailable:l. |
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
245 |
]. |
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
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parents:
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diff
changeset
|
246 |
buffer = aCollection ifTrue:[ |
5a7866138026
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parents:
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diff
changeset
|
247 |
^ self |
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
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parents:
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diff
changeset
|
248 |
]. |
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
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parents:
3173
diff
changeset
|
249 |
idx := buffer indexOf:first startingAt:2. |
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
Claus Gittinger <cg@exept.de>
parents:
3173
diff
changeset
|
250 |
idx == 0 ifTrue:[ |
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
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parents:
3173
diff
changeset
|
251 |
buffer := nil |
5a7866138026
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parents:
3173
diff
changeset
|
252 |
] ifFalse:[ |
5a7866138026
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parents:
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diff
changeset
|
253 |
buffer := (buffer copyFrom:idx) , (self nextAvailable:(idx - 1)) |
5a7866138026
set eolMode of stderr & stdout to #crlf under win32
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parents:
3173
diff
changeset
|
254 |
] |
3173
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
255 |
]. |
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diff
changeset
|
256 |
^ nil |
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diff
changeset
|
257 |
|
664f2ffa7493
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diff
changeset
|
258 |
" |
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Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
259 |
|s| |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
260 |
s := ReadStream on:'12345678901234567890'. |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
261 |
s skipThroughAll:'901'. |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
262 |
s upToEnd |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
Stefan Vogel <sv@exept.de>
parents:
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diff
changeset
|
263 |
" |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
Stefan Vogel <sv@exept.de>
parents:
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diff
changeset
|
264 |
" |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
265 |
|s| |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
266 |
s := ReadStream on:'12345678901234567890'. |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
267 |
s skipThroughAll:'1234'. |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
268 |
s upToEnd |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
269 |
" |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
270 |
" |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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diff
changeset
|
271 |
|s| |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
272 |
s := ReadStream on:'12345678901234567890'. |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
2965
diff
changeset
|
273 |
s skipThroughAll:'999'. |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
274 |
s atEnd |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
Stefan Vogel <sv@exept.de>
parents:
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diff
changeset
|
275 |
" |
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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diff
changeset
|
276 |
|
664f2ffa7493
Redefine #skipThroughAll: to not use #position.
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parents:
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|
277 |
"Modified: / 11.1.1997 / 19:09:06 / cg" |
664f2ffa7493
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diff
changeset
|
278 |
"Created: / 15.1.1998 / 23:33:37 / stefan" |
1 | 279 |
! ! |
280 |
||
177 | 281 |
!NonPositionableExternalStream methodsFor:'printing & storing'! |
282 |
||
283 |
printOn:aStream |
|
2965 | 284 |
"{ Pragma: +optSpace }" |
285 |
||
4392 | 286 |
"append a user printed representation of the receiver to aStream. |
287 |
The format is suitable for a human - not meant to be read back." |
|
177 | 288 |
|
2965 | 289 |
|myName| |
290 |
||
177 | 291 |
self == Stdin ifTrue:[ |
4392 | 292 |
myName := 'Stdin'. |
2965 | 293 |
] ifFalse:[ |
4392 | 294 |
self == Stdout ifTrue:[ |
295 |
myName := 'Stdout'. |
|
296 |
] ifFalse:[ |
|
297 |
self == Stderr ifTrue:[ |
|
298 |
myName := 'Stderr'. |
|
299 |
] |
|
300 |
] |
|
177 | 301 |
]. |
2965 | 302 |
|
303 |
myName notNil ifTrue:[ |
|
4392 | 304 |
aStream nextPutAll:myName. |
305 |
^ self |
|
177 | 306 |
]. |
307 |
super printOn:aStream |
|
308 |
! |
|
309 |
||
310 |
storeOn:aStream |
|
2965 | 311 |
"{ Pragma: +optSpace }" |
312 |
||
213 | 313 |
"append a printed representation of the receiver on aStream, from |
314 |
which the receiver can be reconstructed." |
|
177 | 315 |
|
316 |
((self == Stdin) |
|
317 |
or:[self == Stdout |
|
318 |
or:[self == Stderr]]) ifTrue:[ |
|
319 |
^ self printOn:aStream |
|
320 |
]. |
|
321 |
super storeOn:aStream |
|
322 |
! ! |
|
323 |
||
613 | 324 |
!NonPositionableExternalStream methodsFor:'private'! |
360 | 325 |
|
5407 | 326 |
handleForStderr |
327 |
"{ Pragma: +optSpace }" |
|
328 |
||
329 |
"return a stderr handle" |
|
330 |
||
331 |
%{ |
|
332 |
RETURN ( __MKOBJ(stderr) ); |
|
333 |
%} |
|
334 |
! |
|
335 |
||
336 |
handleForStdin |
|
337 |
"{ Pragma: +optSpace }" |
|
338 |
||
339 |
"return a stdin handle" |
|
340 |
||
341 |
%{ |
|
342 |
RETURN ( __MKOBJ(stdin) ); |
|
343 |
%} |
|
344 |
! |
|
345 |
||
346 |
handleForStdout |
|
347 |
"{ Pragma: +optSpace }" |
|
348 |
||
349 |
"return a stdout handle" |
|
350 |
||
351 |
%{ |
|
352 |
RETURN ( __MKOBJ(stdout) ); |
|
353 |
%} |
|
354 |
! |
|
355 |
||
613 | 356 |
initializeForStderr |
2965 | 357 |
"{ Pragma: +optSpace }" |
358 |
||
613 | 359 |
"setup for writing to stderr" |
269 | 360 |
|
613 | 361 |
mode := #readwrite. |
362 |
buffered := false. |
|
5407 | 363 |
filePointer := self handleForStderr. |
364 |
OperatingSystem isMSWINDOWSlike ifTrue:[ |
|
365 |
eolMode := #crlf |
|
366 |
] |
|
613 | 367 |
! |
1 | 368 |
|
369 |
initializeForStdin |
|
2965 | 370 |
"{ Pragma: +optSpace }" |
371 |
||
44 | 372 |
"setup for reading stdin" |
373 |
||
1 | 374 |
mode := #readonly. |
6843
ef53f65b7364
stdout/err must not be buffered (sending prompts without NL)
Claus Gittinger <cg@exept.de>
parents:
5918
diff
changeset
|
375 |
"/ buffered := true. |
ef53f65b7364
stdout/err must not be buffered (sending prompts without NL)
Claus Gittinger <cg@exept.de>
parents:
5918
diff
changeset
|
376 |
buffered := false. |
5407 | 377 |
filePointer := self handleForStdin. |
1 | 378 |
! |
379 |
||
380 |
initializeForStdout |
|
2965 | 381 |
"{ Pragma: +optSpace }" |
382 |
||
44 | 383 |
"setup for writing to stdout" |
384 |
||
1 | 385 |
mode := #readwrite. |
10 | 386 |
buffered := false. |
5407 | 387 |
filePointer := self handleForStdout. |
388 |
OperatingSystem isMSWINDOWSlike ifTrue:[ |
|
389 |
eolMode := #crlf |
|
390 |
] |
|
1 | 391 |
! |
392 |
||
393 |
reOpen |
|
2965 | 394 |
"{ Pragma: +optSpace }" |
395 |
||
44 | 396 |
"reopen the stream after an image restart. |
397 |
If I am one of the standard streams, reopen is easy" |
|
1 | 398 |
|
477
8710aba7876b
oops - making id's real objects requires a store macro
Claus Gittinger <cg@exept.de>
parents:
475
diff
changeset
|
399 |
(self == StdInStream) ifTrue:[ |
177 | 400 |
^ self initializeForStdin |
1 | 401 |
]. |
477
8710aba7876b
oops - making id's real objects requires a store macro
Claus Gittinger <cg@exept.de>
parents:
475
diff
changeset
|
402 |
(self == StdOutStream) ifTrue:[ |
177 | 403 |
^ self initializeForStdout |
1 | 404 |
]. |
477
8710aba7876b
oops - making id's real objects requires a store macro
Claus Gittinger <cg@exept.de>
parents:
475
diff
changeset
|
405 |
(self == StdErrorStream) ifTrue:[ |
177 | 406 |
^ self initializeForStderr |
1 | 407 |
]. |
408 |
^ super reOpen |
|
409 |
! ! |
|
613 | 410 |
|
411 |
!NonPositionableExternalStream methodsFor:'queries'! |
|
412 |
||
5851
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
413 |
atEnd |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
414 |
"return true, if position is at end" |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
415 |
|
5918 | 416 |
(self == StdInStream) ifTrue:[ |
417 |
OperatingSystem hasConsole ifFalse:[ |
|
418 |
^ true |
|
419 |
] |
|
420 |
]. |
|
421 |
||
5851
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
422 |
"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
|
423 |
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
|
424 |
|
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
425 |
self readWait. |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
426 |
^ super atEnd. |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
427 |
! |
6823cc642d60
only do readWait for pipes and sockets.
Claus Gittinger <cg@exept.de>
parents:
5407
diff
changeset
|
428 |
|
4962
0023029d2522
allow Transcript current if Transcript is stdErr
Stefan Vogel <sv@exept.de>
parents:
4559
diff
changeset
|
429 |
current |
0023029d2522
allow Transcript current if Transcript is stdErr
Stefan Vogel <sv@exept.de>
parents:
4559
diff
changeset
|
430 |
"for compatibility with Transcript - allow Transcript current, |
0023029d2522
allow Transcript current if Transcript is stdErr
Stefan Vogel <sv@exept.de>
parents:
4559
diff
changeset
|
431 |
even if redirected to the standardError" |
0023029d2522
allow Transcript current if Transcript is stdErr
Stefan Vogel <sv@exept.de>
parents:
4559
diff
changeset
|
432 |
|
0023029d2522
allow Transcript current if Transcript is stdErr
Stefan Vogel <sv@exept.de>
parents:
4559
diff
changeset
|
433 |
self == Transcript ifTrue:[ |
0023029d2522
allow Transcript current if Transcript is stdErr
Stefan Vogel <sv@exept.de>
parents:
4559
diff
changeset
|
434 |
^ self |
0023029d2522
allow Transcript current if Transcript is stdErr
Stefan Vogel <sv@exept.de>
parents:
4559
diff
changeset
|
435 |
]. |
0023029d2522
allow Transcript current if Transcript is stdErr
Stefan Vogel <sv@exept.de>
parents:
4559
diff
changeset
|
436 |
^ super current |
5407 | 437 |
! |
438 |
||
439 |
isPositionable |
|
440 |
"return true, if the stream supports positioning (this one is not)" |
|
441 |
||
442 |
^ false |
|
613 | 443 |
! ! |
444 |
||
7497
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
445 |
!NonPositionableExternalStream methodsFor:'writing'! |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
446 |
|
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
447 |
nextPutBytes:initialReadCount from:buffer startingAt:initialOffset |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
448 |
"redefined, to wait until stream is writable" |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
449 |
|
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
450 |
|offset readCount blocking| |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
451 |
|
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
452 |
offset := initialOffset. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
453 |
readCount := initialReadCount. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
454 |
|
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
455 |
blocking := self blocking:false. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
456 |
[readCount ~~ 0] whileTrue:[ |count| |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
457 |
self writeWait. |
7501 | 458 |
count := super nextPutBytes:readCount from:buffer startingAt:offset. |
7497
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
459 |
readCount := readCount - count. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
460 |
offset := offset + count. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
461 |
]. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
462 |
blocking ifTrue:[ |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
463 |
self blocking:true. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
464 |
]. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
465 |
^ offset - initialOffset. |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
466 |
! ! |
cc29afd51151
Do not block when writing to pipes
Stefan Vogel <sv@exept.de>
parents:
7241
diff
changeset
|
467 |
|
1295 | 468 |
!NonPositionableExternalStream class methodsFor:'documentation'! |
469 |
||
470 |
version |
|
7541 | 471 |
^ '$Header: /cvs/stx/stx/libbasic/NonPositionableExternalStream.st,v 1.46 2003-08-11 13:28:37 stefan Exp $' |
1295 | 472 |
! ! |