author | Claus Gittinger <cg@exept.de> |
Thu, 13 Dec 2001 20:00:33 +0100 | |
changeset 6314 | e1aad938d629 |
parent 6313 | 30374121d853 |
child 6348 | 202f389800c7 |
permissions | -rw-r--r-- |
1 | 1 |
" |
5 | 2 |
COPYRIGHT (c) 1989 by Claus Gittinger |
216 | 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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inclusion of the above copyright notice. This software may not |
|
8 |
be provided or otherwise made available to, or used by, any |
|
9 |
other person. No title to or ownership of the software is |
|
10 |
hereby transferred. |
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" |
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||
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"{ Package: 'stx:libbasic' }" |
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Object subclass:#Stream |
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instanceVariableNames:'signalAtEnd' |
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classVariableNames:'StreamErrorSignal PositionErrorSignal ReadErrorSignal |
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WriteErrorSignal EndOfStreamSignal LineTooLongErrorSignal |
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ChunkSeparator' |
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poolDictionaries:'' |
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category:'Streams' |
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! |
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||
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!Stream class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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216 | 29 |
All Rights Reserved |
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31 |
This software is furnished under a license and may be used |
|
32 |
only in accordance with the terms of that license and with the |
|
33 |
inclusion of the above copyright notice. This software may not |
|
34 |
be provided or otherwise made available to, or used by, any |
|
35 |
other person. No title to or ownership of the software is |
|
36 |
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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An abstract class defining common behavior for all stream-like objects. |
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See concrete subclasses for more detail. |
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The protocol as implemented here is often only provided as a fallBack |
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for very uncommon cases. Much of it is redefined for performance. |
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(In streams which know more about their internal representation ...) |
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Subclasses should (at least) implement: |
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#next (if readable) |
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#nextPut: (if writable) |
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#contents |
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#atEnd |
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#isReadable |
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#isWritable |
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Peekable & Positionable streams should (at least) implement: |
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#peek |
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#position |
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#position: |
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||
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[instance variables:] |
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65 |
signalAtEnd <nil | Boolean> controls behavior when a read |
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is attempted past the end-of-stream |
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if true, the endOfStreamSignal is |
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raised. |
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if false, nil is returned. |
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if nil (the default), the signal |
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is raised, but if there is no handler, |
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nil is returned. |
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[Class variables:] |
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StreamErrorSignal <Signal> parent of all stream errors |
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PositionErrorSignal <Signal> position attemted on a stream |
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which does not support positioning, |
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or if the position is invalid. |
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ReadErrorSignal <Signal> raised on read errors |
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WriteErrorSignal <Signal> raised on write errors |
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EndOfStreamSignal <Signal> raised at end of stream if signalAtEnd |
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is enabled. |
970
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
846
diff
changeset
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87 |
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1295 | 88 |
[author:] |
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89 |
Claus Gittinger |
88 | 90 |
" |
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! ! |
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1 | 92 |
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1949 | 93 |
!Stream class methodsFor:'initialization'! |
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initSignals |
96 |
"/ StreamErrorSignal := ErrorSignal newSignalMayProceed:false. |
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"/ StreamErrorSignal nameClass:self message:#streamErrorSignal. |
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StreamErrorSignal := StreamError. |
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StreamErrorSignal notifierString:'Stream error'. |
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PositionErrorSignal := StreamErrorSignal newSignalMayProceed:true. |
102 |
PositionErrorSignal nameClass:self message:#positionErrorSignal. |
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PositionErrorSignal notifierString:'stream has no concept of a position'. |
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ReadErrorSignal := StreamErrorSignal newSignalMayProceed:true. |
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ReadErrorSignal nameClass:self message:#readErrorSignal. |
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ReadErrorSignal notifierString:'read error'. |
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WriteErrorSignal := StreamErrorSignal newSignalMayProceed:true. |
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WriteErrorSignal nameClass:self message:#writeErrorSignal. |
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WriteErrorSignal notifierString:'write error'. |
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113 |
LineTooLongErrorSignal := QuerySignal new. |
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114 |
LineTooLongErrorSignal parent:StreamErrorSignal. |
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LineTooLongErrorSignal nameClass:self message:#lineTooLongErrorSignal. |
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LineTooLongErrorSignal notifierString:'line too long'. |
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EndOfStreamSignal := QuerySignal new. |
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EndOfStreamSignal parent:StreamErrorSignal. |
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EndOfStreamSignal nameClass:self message:#endOfStreamSignal. |
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EndOfStreamSignal notifierString:'end of stream'. |
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"Created: / 7.9.2001 / 14:15:13 / cg" |
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"Modified: / 7.9.2001 / 14:15:27 / cg" |
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! |
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initialize |
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ChunkSeparator := $!!. |
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StreamErrorSignal isNil ifTrue:[ |
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self initSignals |
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] |
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"Modified: / 1.11.1998 / 15:57:37 / stefan" |
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"Modified: / 7.9.2001 / 14:15:51 / cg" |
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! ! |
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1949 | 138 |
!Stream class methodsFor:'instance creation'! |
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new |
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"{ Pragma: +optSpace }" |
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"report an error - Streams are created using on:-messages" |
144 |
||
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error: vs. error:mayProceed:
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self error:'Streams cannot be created with new' |
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! ! |
147 |
||
1949 | 148 |
!Stream class methodsFor:'Signal constants'! |
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|
970
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150 |
endOfStreamSignal |
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151 |
"return the signal raised if read past end of stream is attemted" |
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152 |
|
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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|
153 |
^ EndOfStreamSignal |
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154 |
! |
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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parents:
846
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155 |
|
3877
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156 |
lineTooLongErrorSignal |
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157 |
"return the signal raised if a line is read which is too long (>32k)" |
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158 |
|
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159 |
^ LineTooLongErrorSignal |
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160 |
|
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161 |
"Created: / 15.10.1998 / 12:11:14 / cg" |
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162 |
! |
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163 |
|
611 | 164 |
positionErrorSignal |
165 |
"return the signal raised if positioning is requested for |
|
166 |
a stream which does not support that kind of operation" |
|
167 |
||
168 |
^ PositionErrorSignal |
|
169 |
! |
|
170 |
||
820
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171 |
readErrorSignal |
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|
172 |
"return the signal raised on read errors" |
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173 |
|
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174 |
^ ReadErrorSignal |
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175 |
! |
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176 |
|
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177 |
streamErrorSignal |
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|
178 |
"return the parent of all stream errors; |
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179 |
handling this one also handles all other errors. |
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180 |
Also, this one may be raised for errors not related to read/write |
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181 |
operations, such as failed ioctls in externalStream etc." |
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182 |
|
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183 |
^ StreamErrorSignal |
820
6d934f5d6cbc
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184 |
! |
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185 |
|
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186 |
writeErrorSignal |
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187 |
"return the signal raised on write errors" |
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188 |
|
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|
189 |
^ WriteErrorSignal |
1 | 190 |
! ! |
191 |
||
5392
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|
192 |
!Stream class methodsFor:'constants'! |
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|
193 |
|
deafa504029a
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|
194 |
chunkSeparator |
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|
195 |
"return the chunk-separation character" |
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|
196 |
|
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197 |
^ ChunkSeparator |
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|
198 |
! ! |
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|
199 |
|
1 | 200 |
!Stream methodsFor:'accessing'! |
201 |
||
202 |
contents |
|
62 | 203 |
"return the entire contents of the stream |
1402
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|
204 |
- we do not know here how to do it, it must be redefined in subclasses." |
1 | 205 |
|
206 |
^ self subclassResponsibility |
|
1402
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|
207 |
|
82462d153a7d
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diff
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|
208 |
"Modified: 15.5.1996 / 17:36:29 / cg" |
970
3b59c9b38dbb
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|
209 |
! |
3b59c9b38dbb
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diff
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|
210 |
|
3b59c9b38dbb
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diff
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|
211 |
signalAtEnd |
3105 | 212 |
"return the signalAtEnd flag setting. |
213 |
If true, reading past the end will always raise an EndOfStream exception. |
|
214 |
If false, no exception is raised and nil is returned from all reading messages. |
|
215 |
If nil (default), the exception is raised if there is a handler; otherwise, nil is returned. |
|
216 |
The default is nil (for ST80 compatibility) i.e. to only raise a signal if there is a handler." |
|
970
3b59c9b38dbb
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|
217 |
|
3b59c9b38dbb
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|
218 |
^ signalAtEnd |
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|
219 |
|
3b59c9b38dbb
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|
220 |
"Created: 5.2.1996 / 18:24:53 / stefan" |
1402
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|
221 |
"Modified: 15.5.1996 / 17:35:55 / cg" |
970
3b59c9b38dbb
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|
222 |
! |
3b59c9b38dbb
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parents:
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diff
changeset
|
223 |
|
1402
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diff
changeset
|
224 |
signalAtEnd:aBoolean |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
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diff
changeset
|
225 |
"set the signalAtEnd flag setting. If true, reading past the end |
82462d153a7d
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1401
diff
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|
226 |
will raise an EndOfStream exception. If false, no exception is |
82462d153a7d
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|
227 |
raised and nil is returned from all reading messages. |
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
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diff
changeset
|
228 |
The default is to raise a signal, but return nil if |
d22de87c7fbd
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|
229 |
not handled." |
970
3b59c9b38dbb
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diff
changeset
|
230 |
|
1402
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diff
changeset
|
231 |
signalAtEnd := aBoolean. |
970
3b59c9b38dbb
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|
232 |
|
3591 | 233 |
"default behavior: return nil if unhandled ... |
234 |
|s| |
|
235 |
||
236 |
s := '12' readStream. |
|
237 |
Transcript showCR:s next. |
|
238 |
Transcript showCR:s next. |
|
239 |
Transcript showCR:s next. |
|
240 |
Transcript showCR:s next. |
|
241 |
" |
|
242 |
||
243 |
"... raise error if handled. |
|
244 |
|s| |
|
245 |
||
246 |
s := '12' readStream. |
|
247 |
Stream endOfStreamSignal handle:[:ex | |
|
248 |
Transcript showCR:'end reached'. |
|
249 |
ex return |
|
250 |
] do:[ |
|
251 |
Transcript showCR:s next. |
|
252 |
Transcript showCR:s next. |
|
253 |
Transcript showCR:s next. |
|
254 |
Transcript showCR:s next. |
|
255 |
] |
|
256 |
" |
|
257 |
||
258 |
"force raise (useful for debugging): |
|
259 |
|s| |
|
260 |
||
261 |
s := '12' readStream. |
|
262 |
s signalAtEnd:true. |
|
263 |
Transcript showCR:s next. |
|
264 |
Transcript showCR:s next. |
|
265 |
Transcript showCR:s next. |
|
266 |
Transcript showCR:s next. |
|
267 |
" |
|
268 |
||
269 |
||
270 |
"force no-raise (useful for compatibility with other systems): |
|
271 |
|s| |
|
272 |
||
273 |
s := '12' readStream. |
|
274 |
s signalAtEnd:false. |
|
275 |
Stream endOfStreamSignal handle:[:ex | |
|
276 |
Transcript showCR:'end reached'. |
|
277 |
ex return |
|
278 |
] do:[ |
|
279 |
Transcript showCR:s next. |
|
280 |
Transcript showCR:s next. |
|
281 |
Transcript showCR:s next. |
|
282 |
Transcript showCR:s next. |
|
283 |
] |
|
284 |
" |
|
285 |
||
286 |
"Modified: / 16.6.1998 / 16:04:41 / cg" |
|
1 | 287 |
! ! |
288 |
||
611 | 289 |
!Stream methodsFor:'closing'! |
290 |
||
291 |
close |
|
292 |
"close the stream - nothing done here. |
|
293 |
Added for compatibility with external streams." |
|
294 |
||
295 |
^ self |
|
296 |
! ! |
|
297 |
||
1401 | 298 |
!Stream methodsFor:'emphasis'! |
1398
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Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
299 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
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diff
changeset
|
300 |
bold |
1448
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parents:
1447
diff
changeset
|
301 |
"set emphasis to #bold. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
302 |
this allows Streams to be used interchangeable with printStreams" |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
303 |
|
1448
0d59ce5c4915
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parents:
1447
diff
changeset
|
304 |
self emphasis:#bold. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
305 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
306 |
"Created: 14.5.1996 / 17:37:37 / cg" |
1448
0d59ce5c4915
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parents:
1447
diff
changeset
|
307 |
"Modified: 3.6.1996 / 16:57:17 / cg" |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
308 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
309 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
310 |
boldItalic |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
311 |
"set emphasis to #boldItalic |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
312 |
this allows Streams to be used interchangeable with printStreams" |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
313 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
314 |
self emphasis:#(bold italic). |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
315 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
316 |
"Created: 14.5.1996 / 17:37:47 / cg" |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
317 |
"Modified: 3.6.1996 / 17:15:22 / cg" |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
318 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
319 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
320 |
emphasis |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
321 |
"ignored here - allows Streams to be used interchangable with |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
322 |
text streams" |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
323 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
324 |
^ nil |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
325 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
326 |
"Created: 14.5.1996 / 17:39:45 / cg" |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
327 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
328 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
329 |
emphasis:anEmphasis |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
330 |
"ignored here. |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
331 |
this allows Streams to be used interchangeable with printStreams" |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
332 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
333 |
^ self |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
334 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
335 |
"Created: 14.5.1996 / 17:38:07 / cg" |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
336 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
337 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
338 |
italic |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
339 |
"set emphasis to #italic. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
340 |
this allows Streams to be used interchangeable with printStreams" |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
341 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
342 |
self emphasis:#italic. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
343 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
344 |
"Created: 14.5.1996 / 17:37:55 / cg" |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
345 |
"Modified: 3.6.1996 / 17:15:32 / cg" |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
346 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
347 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
348 |
normal |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
349 |
"set emphasis to #normal. |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
350 |
this allows Streams to be used interchangeable with printStreams" |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
351 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
352 |
self emphasis:nil |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
353 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
354 |
"Created: 14.5.1996 / 17:37:59 / cg" |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
355 |
"Modified: 3.6.1996 / 17:15:35 / cg" |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
356 |
! |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
357 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
358 |
strikeout |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
359 |
"set emphasis to #strikeout. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
360 |
this allows Streams to be used interchangeable with printStreams" |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
361 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
362 |
self emphasis:#strikeout. |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
363 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
364 |
"Modified: 3.6.1996 / 16:57:56 / cg" |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
365 |
"Created: 3.6.1996 / 17:15:45 / cg" |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
366 |
! |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
367 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
368 |
underline |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
369 |
"set emphasis to #underline. |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
370 |
this allows Streams to be used interchangeable with printStreams" |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
371 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
372 |
self emphasis:#underline. |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
373 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
374 |
"Created: 3.6.1996 / 17:00:03 / cg" |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
375 |
"Modified: 3.6.1996 / 17:15:38 / cg" |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
376 |
! ! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
377 |
|
1401 | 378 |
!Stream methodsFor:'enumerating'! |
379 |
||
380 |
do:aBlock |
|
381 |
"evaluate the argument, aBlock for all remaining elements, |
|
382 |
up to the end of the stream" |
|
383 |
||
384 |
[self atEnd] whileFalse:[ |
|
385 |
aBlock value:(self next) |
|
386 |
] |
|
387 |
||
388 |
" |
|
389 |
|s| |
|
390 |
s := ReadStream on:#(1 2 3 4 5 6 7 8 9). |
|
391 |
s next. |
|
392 |
s next. |
|
1422 | 393 |
s do:[:element | Transcript showCR:element] |
1401 | 394 |
" |
395 |
! ! |
|
396 |
||
397 |
!Stream methodsFor:'error handling'! |
|
398 |
||
399 |
pastEnd |
|
400 |
"someone tried to read after the end of the stream. |
|
3104
4b817b05cde0
vw compatible readPastEnd: only raise the signal if its handled;
Claus Gittinger <cg@exept.de>
parents:
3084
diff
changeset
|
401 |
If signalAtEnd == true, raise a signal. If its false, return nil. |
4b817b05cde0
vw compatible readPastEnd: only raise the signal if its handled;
Claus Gittinger <cg@exept.de>
parents:
3084
diff
changeset
|
402 |
Otherwise raise the signal, but only if handled; otherwise return nil." |
1401 | 403 |
|
404 |
signalAtEnd == true ifTrue:[ |
|
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
405 |
"/ always raise ... |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
406 |
^ EndOfStreamSignal raiseRequestFrom:self |
3104
4b817b05cde0
vw compatible readPastEnd: only raise the signal if its handled;
Claus Gittinger <cg@exept.de>
parents:
3084
diff
changeset
|
407 |
]. |
4b817b05cde0
vw compatible readPastEnd: only raise the signal if its handled;
Claus Gittinger <cg@exept.de>
parents:
3084
diff
changeset
|
408 |
signalAtEnd == false ifTrue:[ |
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
409 |
"/ never raise ... |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
410 |
^ nil |
1401 | 411 |
]. |
412 |
||
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
413 |
"/ the default case - raise it, but return nil, if noone cares. |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
414 |
Signal noHandlerSignal handle:[:ex | |
3591 | 415 |
ex return |
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
416 |
] do:[ |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
417 |
^ EndOfStreamSignal raiseRequestFrom:self |
3591 | 418 |
]. |
419 |
^ nil. |
|
420 |
||
421 |
"default behavior: return nil if unhandled ... |
|
422 |
|s| |
|
423 |
||
424 |
s := '12' readStream. |
|
425 |
Transcript showCR:s next. |
|
426 |
Transcript showCR:s next. |
|
427 |
Transcript showCR:s next. |
|
428 |
Transcript showCR:s next. |
|
429 |
" |
|
430 |
||
431 |
"... raise error if handled. |
|
432 |
|s| |
|
433 |
||
434 |
s := '12' readStream. |
|
435 |
Stream endOfStreamSignal handle:[:ex | |
|
436 |
Transcript showCR:'end reached'. |
|
437 |
ex return |
|
438 |
] do:[ |
|
439 |
Transcript showCR:s next. |
|
440 |
Transcript showCR:s next. |
|
441 |
Transcript showCR:s next. |
|
442 |
Transcript showCR:s next. |
|
443 |
] |
|
444 |
" |
|
3104
4b817b05cde0
vw compatible readPastEnd: only raise the signal if its handled;
Claus Gittinger <cg@exept.de>
parents:
3084
diff
changeset
|
445 |
|
3591 | 446 |
"force raise (useful for debugging): |
447 |
|s| |
|
448 |
||
449 |
s := '12' readStream. |
|
450 |
s signalAtEnd:true. |
|
451 |
Transcript showCR:s next. |
|
452 |
Transcript showCR:s next. |
|
453 |
Transcript showCR:s next. |
|
454 |
Transcript showCR:s next. |
|
455 |
" |
|
456 |
||
457 |
||
458 |
"force no-raise (useful for compatibility with other systems): |
|
459 |
|s| |
|
460 |
||
461 |
s := '12' readStream. |
|
462 |
s signalAtEnd:false. |
|
463 |
Stream endOfStreamSignal handle:[:ex | |
|
464 |
Transcript showCR:'end reached'. |
|
465 |
ex return |
|
466 |
] do:[ |
|
467 |
Transcript showCR:s next. |
|
468 |
Transcript showCR:s next. |
|
469 |
Transcript showCR:s next. |
|
470 |
Transcript showCR:s next. |
|
471 |
] |
|
472 |
" |
|
473 |
||
474 |
"Modified: / 16.6.1998 / 16:04:13 / cg" |
|
1401 | 475 |
! ! |
476 |
||
611 | 477 |
!Stream methodsFor:'misc'! |
478 |
||
479 |
binary |
|
1402
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
480 |
"switch to binary mode. In binary mode, reading of text streams |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
481 |
returns byte-valued integers instead of characters; writing expects |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
482 |
byte-valued integers respectively. |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
483 |
Ignored here, but added to make internalStreams protocol compatible |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
484 |
with externalStreams." |
611 | 485 |
|
1402
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
486 |
"Modified: 15.5.1996 / 17:38:36 / cg" |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
487 |
! |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
488 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
489 |
text |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
490 |
"switch to text mode. |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
491 |
Ignored here, but added to make internalStreams protocol compatible |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
492 |
with externalStreams." |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
493 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
494 |
"Modified: 15.5.1996 / 17:38:36 / cg" |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
495 |
"Created: 13.9.1996 / 18:33:26 / cg" |
611 | 496 |
! ! |
497 |
||
498 |
!Stream methodsFor:'non homogenous reading'! |
|
499 |
||
2714 | 500 |
nextBytes:count |
5072
e3718d979b80
nextBytes: returns bytes and not a string.
Stefan Vogel <sv@exept.de>
parents:
4810
diff
changeset
|
501 |
"read the next count bytes and return it either as a byteArray. |
2714 | 502 |
If EOF is encountered while reading, a truncated byteArry or short string |
503 |
is returned. If EOF is already reached before the first byte can be read, |
|
504 |
nil is returned." |
|
505 |
||
506 |
|data n| |
|
507 |
||
5072
e3718d979b80
nextBytes: returns bytes and not a string.
Stefan Vogel <sv@exept.de>
parents:
4810
diff
changeset
|
508 |
data := ByteArray new:count. |
2714 | 509 |
n := self nextBytes:count into:data startingAt:1. |
510 |
n ~~ count ifTrue:[ |
|
3346 | 511 |
n == 0 ifTrue:[ |
512 |
^ nil |
|
513 |
]. |
|
514 |
data := data copyTo:n |
|
2714 | 515 |
]. |
516 |
||
517 |
^ data |
|
518 |
||
3346 | 519 |
"Created: / 21.6.1997 / 11:18:57 / cg" |
520 |
"Modified: / 30.3.1998 / 18:04:58 / cg" |
|
2714 | 521 |
! |
522 |
||
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
523 |
nextBytes:count into:anObject |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
524 |
"read the next count bytes into an object and return the number of |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
525 |
bytes read. On EOF, 0 is returned. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
526 |
If the receiver is some socket/pipe-like stream, an exception |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
527 |
is raised if the connection is broken. |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
528 |
|
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
529 |
The object must have non-pointer indexed instvars (i.e. it must be |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
530 |
a ByteArray, String, Float- or DoubleArray). |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
531 |
If anObject is a string or byteArray and reused, this provides the |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
532 |
fastest possible physical I/O (since no new objects are allocated). |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
533 |
|
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
534 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
535 |
Warning: in general, you cannot use this method to pass data from other |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
536 |
architectures since it does not care for byte order or float representation." |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
537 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
538 |
^ self nextBytes:count into:anObject startingAt:1 |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
539 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
540 |
"Modified: 22.4.1997 / 10:41:39 / cg" |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
541 |
! |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
542 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
543 |
nextBytes:numBytes into:aCollection startingAt:initialIndex |
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
544 |
"return the next numBytes from the stream. If the end is |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
545 |
reached before, only that many bytes are copyied into the |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
546 |
collection. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
547 |
Returns the number of bytes that have been actually read. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
548 |
The receiver must support reading of binary bytes. |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
549 |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
550 |
Notice: this method is privided here for protocol completeness |
3154 | 551 |
with externalStreams - it is normally not used with other |
552 |
streams." |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
553 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
554 |
|n "{Class: SmallInteger }" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
555 |
dstIndex| |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
556 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
557 |
dstIndex := initialIndex. |
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
558 |
n := 0. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
559 |
[self atEnd] whileFalse:[ |
3154 | 560 |
n == numBytes ifTrue:[ |
561 |
^ n |
|
562 |
]. |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
563 |
|
3154 | 564 |
aCollection byteAt:dstIndex put:(self nextByte). |
565 |
dstIndex := dstIndex + 1. |
|
566 |
n := n + 1. |
|
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
567 |
]. |
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
568 |
^ n |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
569 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
570 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
571 |
|s n buffer| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
572 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
573 |
buffer := ByteArray new:10. |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
574 |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
575 |
s := ReadStream on:#[1 2 3 4 5 6 7 8 9]. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
576 |
s next:3. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
577 |
n := s nextBytes:9 into:buffer startingAt:1. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
578 |
Transcript showCR:('n = %1; buffer = <%2>' bindWith:n with:buffer) |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
579 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
580 |
|
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
581 |
"Modified: 22.4.1997 / 10:43:08 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
582 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
583 |
|
2587 | 584 |
nextBytes:numBytes into:aCollection startingAt:initialIndex blockSize:blockSize |
585 |
"like nextBytes:into:startingAt:, but read in blocks of the given size. |
|
586 |
This leads to better beahvior when reading large chunks from a slow device, |
|
587 |
such as a cdrom drive (since a single unix-read is not interruptable)." |
|
588 |
||
589 |
|nR oR n| |
|
590 |
||
591 |
nR := numBytes. |
|
592 |
oR := initialIndex. |
|
593 |
[nR > 0] whileTrue:[ |
|
3154 | 594 |
n := nR. |
595 |
n > blockSize ifTrue:[n := blockSize]. |
|
596 |
n := self nextBytes:n into:aCollection startingAt:oR. |
|
597 |
n == 0 ifTrue:[ |
|
598 |
^ numBytes - nR |
|
599 |
]. |
|
600 |
oR := oR + n. |
|
601 |
nR := nR - n |
|
2587 | 602 |
]. |
603 |
^ numBytes |
|
604 |
||
605 |
"Created: 24.4.1997 / 21:09:34 / cg" |
|
606 |
"Modified: 24.4.1997 / 21:19:50 / cg" |
|
607 |
! |
|
608 |
||
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
609 |
nextBytesInto:anObject |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
610 |
"read bytes into an object, regardless of binary/text mode. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
611 |
The number of bytes to read is defined by the objects size. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
612 |
Return the number of bytes read. On EOF, 0 is returned. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
613 |
If the receiver is some socket/pipe-like stream, an exception |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
614 |
is raised if the connection is broken. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
615 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
616 |
The object to read into must have non-pointer indexed instvars |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
617 |
(i.e. it must be a ByteArray, String, Float- or DoubleArray). |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
618 |
If anObject is a string or byteArray and reused, this provides the |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
619 |
fastest possible physical I/O (since no new objects are allocated). |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
620 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
621 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
622 |
Warning: in general, you cannot use this method to pass data from other |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
623 |
architectures since it does not care for byte order or float representation." |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
624 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
625 |
^ self nextBytes:(anObject byteSize) into:anObject startingAt:1 |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
626 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
627 |
" to read 100 bytes from a stream: |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
628 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
629 |
|b aStream| |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
630 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
631 |
aStream := 'smalltalk.rc' asFilename readStream. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
632 |
b := ByteArray new:100. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
633 |
aStream nextBytesInto:b. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
634 |
aStream close. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
635 |
b inspect |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
636 |
" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
637 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
638 |
" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
639 |
|s aStream| |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
640 |
aStream := 'smalltalk.rc' asFilename readStream. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
641 |
s := String new:100. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
642 |
aStream nextBytesInto:s. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
643 |
aStream close. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
644 |
s inspect |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
645 |
" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
646 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
647 |
"Modified: 22.4.1997 / 10:42:02 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
648 |
"Created: 22.4.1997 / 10:42:26 / cg" |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
649 |
! |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
650 |
|
611 | 651 |
nextLongMSB:msbFlag |
652 |
"return a signed long (4 bytes) from the stream. |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
653 |
The receiver must support reading of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
654 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
655 |
The msbFlag argument controls if the integer is to be read with |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
656 |
most-significant-byte-first (true) or least-first (false). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
657 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
658 |
where its known that the byte order is some definite one. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
659 |
If you dont care (i.e. talk to other smalltalks) or you can control the |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
660 |
order, please use the corresponding xxxNet methods, which use a standard |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
661 |
network byte order." |
611 | 662 |
|
3184
d99302322139
Ok, #upToAll: positions after the collection.
Stefan Vogel <sv@exept.de>
parents:
3176
diff
changeset
|
663 |
|uval "{ Class: SmallInteger }" val| |
611 | 664 |
|
665 |
msbFlag ifTrue:[ |
|
2332 | 666 |
"most significant first" |
3176 | 667 |
uval := self next. |
668 |
uval := (uval bitShift:8) bitOr:self next. |
|
669 |
uval := (uval bitShift:8) bitOr:self next. |
|
670 |
val := (uval bitShift:8) bitOr:self next. |
|
611 | 671 |
] ifFalse:[ |
2332 | 672 |
"least significant first" |
673 |
uval := self next. |
|
674 |
uval := uval bitOr:(self next bitShift:8). |
|
675 |
uval := uval bitOr:(self next bitShift:16). |
|
3176 | 676 |
val := uval bitOr:(self next bitShift:24). |
611 | 677 |
]. |
678 |
"change from unsigned 0..FFFFFFFF to signed -80000000..7FFFFFFF" |
|
679 |
||
3176 | 680 |
val >= 16r80000000 ifTrue:[ |
681 |
^ val - 16r100000000 |
|
682 |
]. |
|
683 |
^ val |
|
684 |
||
685 |
" |
|
686 |
|bytes s| |
|
687 |
||
688 |
bytes := #[16rFF 16rFF 16rFF 16rFF]. |
|
689 |
s := bytes readStream. |
|
690 |
Transcript showCR:(s nextLongMSB:true). |
|
691 |
s reset. |
|
692 |
Transcript showCR:(s nextLongMSB:false). |
|
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
693 |
|
3176 | 694 |
bytes := #[16r12 16r34 16r56 16r78]. |
695 |
s := bytes readStream. |
|
696 |
Transcript showCR:(s nextLongMSB:true). |
|
697 |
s reset. |
|
698 |
Transcript showCR:(s nextLongMSB:false). |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
699 |
|
3176 | 700 |
bytes := #[16r89 16rab 16rcd 16ref]. |
701 |
s := bytes readStream. |
|
702 |
Transcript showCR:(s nextLongMSB:true). |
|
703 |
s reset. |
|
704 |
Transcript showCR:(s nextLongMSB:false). |
|
705 |
" |
|
706 |
||
707 |
"Modified: / 14.1.1998 / 15:40:41 / cg" |
|
611 | 708 |
! |
709 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
710 |
nextLongNet |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
711 |
"return a signed long (4 bytes) in network byte order from the stream. |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
712 |
The receiver must support reading of binary bytes." |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
713 |
|
5823 | 714 |
^ self nextLongMSB:true "/ (Socket networkLongOrderIsMSB) |
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
715 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
716 |
"Created: 10.1.1996 / 19:49:28 / cg" |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
717 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
718 |
|
611 | 719 |
nextNumber:n |
720 |
"Return the next n bytes as a positive Integer; bytes are taken msb-first." |
|
721 |
||
722 |
|s |
|
723 |
val "{ Class: SmallInteger }" |
|
724 |
rep "{ Class: SmallInteger }"| |
|
725 |
||
726 |
"claus: this method is central in binaryStorage - |
|
727 |
therefore it has been tuned a bit (and needs even more tuning)" |
|
728 |
||
729 |
n == 1 ifTrue:[ |
|
730 |
^ self next |
|
731 |
]. |
|
732 |
n == 2 ifTrue:[ |
|
733 |
val := self next. |
|
734 |
val := (val bitShift:8) + self next. |
|
735 |
^ val |
|
736 |
]. |
|
737 |
n == 3 ifTrue:[ |
|
738 |
val := self next. |
|
739 |
val := (val bitShift:8) + self next. |
|
740 |
val := (val bitShift:8) + self next. |
|
741 |
^ val |
|
742 |
]. |
|
743 |
n == 4 ifTrue:[ |
|
744 |
val := self next. |
|
745 |
val <= 16r3F ifTrue:[ |
|
746 |
val := (val bitShift:8) + self next. |
|
747 |
val := (val bitShift:8) + self next. |
|
748 |
val := (val bitShift:8) + self next. |
|
749 |
^ val |
|
750 |
]. |
|
751 |
"sorry, but need a largeInteger" |
|
3176 | 752 |
val := (val bitShift:8) + self next. |
611 | 753 |
s := (val bitShift:8) + self next. |
754 |
s := (s * 256) + self next. |
|
755 |
^ s |
|
756 |
]. |
|
757 |
||
758 |
" |
|
759 |
arbitrary long |
|
760 |
" |
|
761 |
s := 0. |
|
762 |
rep := n. |
|
763 |
rep timesRepeat:[ |
|
764 |
s := s * 256 + self next |
|
765 |
]. |
|
766 |
^ s truncated |
|
767 |
! |
|
768 |
||
769 |
nextShortMSB:msbFlag |
|
770 |
"return a signed short (2 bytes) from the stream. |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
771 |
The receiver must support reading of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
772 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
773 |
The msbFlag argument controls if the integer is to be read with |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
774 |
most-significant-byte-first (true) or least-first (false). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
775 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
776 |
where its known that the byte order is some definite one. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
777 |
If you dont care (i.e. talk to other smalltalks) or you can control the |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
778 |
order, please use the corresponding xxxNet methods, which use a standard |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
779 |
network byte order." |
611 | 780 |
|
781 |
|uval "{ Class: SmallInteger }"| |
|
782 |
||
783 |
msbFlag ifTrue:[ |
|
2332 | 784 |
"most significant first" |
785 |
uval := self next bitShift:8. |
|
786 |
uval := uval bitOr:(self next). |
|
611 | 787 |
] ifFalse:[ |
2332 | 788 |
"least significant first" |
789 |
uval := self next. |
|
790 |
uval := uval bitOr:(self next bitShift:8). |
|
611 | 791 |
]. |
792 |
"change from unsigned 0..FFFF to signed -8000..7FFF" |
|
793 |
uval >= 16r8000 ifTrue:[ |
|
2332 | 794 |
^ uval - 16r10000 |
611 | 795 |
]. |
796 |
^ uval |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
797 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
798 |
"Modified: 11.7.1996 / 10:07:04 / cg" |
611 | 799 |
! |
800 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
801 |
nextShortNet |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
802 |
"return a signed short (2 bytes) in network byte order from the stream. |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
803 |
The receiver must support reading of binary bytes." |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
804 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
805 |
^ self nextShortMSB:(Socket networkShortOrderIsMSB) |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
806 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
807 |
"Modified: 10.1.1996 / 19:48:50 / cg" |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
808 |
"Created: 10.1.1996 / 19:49:41 / cg" |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
809 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
810 |
|
4588 | 811 |
nextSignedByte |
812 |
"return a signed byte (-128..127) from the stream. |
|
813 |
The receiver must support reading of binary bytes." |
|
814 |
||
815 |
|uval "{ Class: SmallInteger }"| |
|
816 |
||
817 |
uval := self next. |
|
818 |
"change from unsigned 0..FF to signed -80..7F" |
|
819 |
uval >= 16r80 ifTrue:[ |
|
820 |
^ uval - 16r100 |
|
821 |
]. |
|
822 |
^ uval |
|
823 |
||
824 |
" |
|
825 |
#[16rFF 16r80 16r7F 16r01] readStream nextSignedByte |
|
826 |
" |
|
827 |
! |
|
828 |
||
611 | 829 |
nextUnsignedLongMSB:msbFlag |
830 |
"return an unsigned long (4 bytes) from the stream. |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
831 |
The receiver must support reading of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
832 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
833 |
The msbFlag argument controls if the integer is to be read with |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
834 |
most-significant-byte-first (true) or least-first (false). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
835 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
836 |
where its known that the byte order is some definite one. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
837 |
If you dont care (i.e. talk to other smalltalks) or you can control the |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
838 |
order, please use the corresponding xxxNet methods, which use a standard |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
839 |
network byte order." |
611 | 840 |
|
841 |
|val| |
|
842 |
||
843 |
msbFlag ifTrue:[ |
|
2332 | 844 |
val := self next. |
845 |
val := (val bitShift:8) bitOr:(self next). |
|
846 |
val := (val bitShift:8) bitOr:(self next). |
|
847 |
val := (val * 256) + (self next). |
|
848 |
^ val |
|
611 | 849 |
]. |
850 |
val := self next. |
|
851 |
^ (val bitShift:24) |
|
852 |
+ (self next bitShift:16) |
|
853 |
+ (self next bitShift:8) |
|
854 |
+ self next |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
855 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
856 |
"Modified: 11.7.1996 / 10:07:13 / cg" |
611 | 857 |
! |
858 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
859 |
nextUnsignedLongNet |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
860 |
"return an unsigned long (4 bytes) in network byte order from the stream. |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
861 |
The receiver must support reading of binary bytes." |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
862 |
|
5823 | 863 |
^ self nextUnsignedLongMSB:true "/ (Socket networkLongOrderIsMSB) |
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
864 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
865 |
"Created: 10.1.1996 / 19:49:02 / cg" |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
866 |
"Modified: 10.1.1996 / 19:49:50 / cg" |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
867 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
868 |
|
611 | 869 |
nextUnsignedShortMSB:msbFlag |
870 |
"return an unsigned short (2 bytes) from the stream. |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
871 |
The receiver must support reading of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
872 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
873 |
The msbFlag argument controls if the integer is to be read with |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
874 |
most-significant-byte-first (true) or least-first (false). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
875 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
876 |
where its known that the byte order is some definite one. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
877 |
If you dont care (i.e. talk to other smalltalks) or you can control the |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
878 |
order, please use the corresponding xxxNet methods, which use a standard |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
879 |
network byte order." |
611 | 880 |
|
881 |
msbFlag ifTrue:[ |
|
2332 | 882 |
^ (self next bitShift:8) bitOr:(self next) |
611 | 883 |
]. |
884 |
^ (self next) bitOr:(self next bitShift:8) |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
885 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
886 |
"Modified: 11.7.1996 / 10:07:20 / cg" |
611 | 887 |
! |
888 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
889 |
nextUnsignedShortNet |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
890 |
"return an unsigned short (2 bytes) in network byte order from the stream. |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
891 |
The receiver must support reading of binary bytes." |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
892 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
893 |
^ self nextUnsignedShortMSB:(Socket networkShortOrderIsMSB) |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
894 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
895 |
"Created: 10.1.1996 / 19:50:02 / cg" |
611 | 896 |
! ! |
897 |
||
898 |
!Stream methodsFor:'non homogenous writing'! |
|
899 |
||
900 |
nextLongPut:aNumber |
|
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
901 |
"for ST-80 compatibility: |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
902 |
Write the argument, aNumber as a long (four bytes). |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
903 |
The most significant byte is sent first." |
611 | 904 |
|
905 |
^ self nextPutLong:aNumber MSB:true |
|
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
906 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
907 |
"Modified: 10.1.1996 / 19:38:54 / cg" |
611 | 908 |
! |
909 |
||
910 |
nextNumber:n put:v |
|
911 |
"Append to the receiver the argument, v, which is a positive Integer, |
|
912 |
as the next n bytes. Bytes are written msb first. |
|
913 |
Possibly pad with leading zeros. |
|
914 |
The receiver must support writing of binary bytes." |
|
915 |
||
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
916 |
|vlen "{ Class: SmallInteger }" |
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
917 |
i "{ Class: SmallInteger }"| |
611 | 918 |
|
919 |
"claus: this method is central in binaryStorage - |
|
920 |
therefore it has been tuned a bit (and needs even more tuning)" |
|
921 |
||
922 |
v class == SmallInteger ifTrue:[ "- this is a hint to stc" |
|
923 |
n == 1 ifTrue:[ |
|
924 |
(v between:0 and:16rFF) ifTrue:[ |
|
925 |
self nextPut:v. |
|
926 |
^ self |
|
927 |
]. |
|
928 |
]. |
|
929 |
n == 2 ifTrue:[ |
|
930 |
(v between:0 and:16rFFFF) ifTrue:[ |
|
2332 | 931 |
self nextPut:(v bitShift:-8); nextPut:(v bitAnd:16rFF). |
611 | 932 |
^ self |
933 |
]. |
|
934 |
]. |
|
935 |
n == 3 ifTrue:[ |
|
936 |
(v between:0 and:16rFFFFFF) ifTrue:[ |
|
937 |
self nextPut:((v bitShift:-16) bitAnd:16rFF). |
|
938 |
self nextPut:((v bitShift:-8) bitAnd:16rFF). |
|
939 |
self nextPut:(v bitAnd:16rFF). |
|
940 |
^ self |
|
941 |
]. |
|
942 |
]. |
|
943 |
n == 4 ifTrue:[ |
|
944 |
(v >= 0) ifTrue:[ |
|
945 |
self nextPut:((v bitShift:-24) bitAnd:16rFF). |
|
946 |
self nextPut:((v bitShift:-16) bitAnd:16rFF). |
|
947 |
self nextPut:((v bitShift:-8) bitAnd:16rFF). |
|
948 |
self nextPut:(v bitAnd:16rFF). |
|
949 |
^ self |
|
950 |
]. |
|
951 |
]. |
|
952 |
]. |
|
953 |
||
954 |
" |
|
955 |
arbitrary long |
|
956 |
" |
|
957 |
n < (vlen := v digitLength) ifTrue: [ |
|
958 |
" |
|
959 |
the number is too big to be repesented in n bytes |
|
960 |
" |
|
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
961 |
self error:'number too big' |
611 | 962 |
]. |
963 |
||
964 |
"pad with leading zeros" |
|
965 |
i := n. |
|
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
966 |
[i > vlen] whileTrue:[ |
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
967 |
self nextPut:0. |
611 | 968 |
i := i - 1 |
969 |
]. |
|
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
970 |
|
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
971 |
i == 1 ifTrue:[ |
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
972 |
^ self nextPut:v |
611 | 973 |
]. |
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
974 |
|
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
975 |
[i > 0] whileTrue:[ |
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
976 |
self nextPut:(v digitAt:i). |
611 | 977 |
i := i - 1 |
978 |
] |
|
979 |
! |
|
980 |
||
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
981 |
nextPutByte:aByteValue |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
982 |
"write a byte. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
983 |
Same as nextPut: here; for protocol compatibility with externalStream." |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
984 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
985 |
self nextPut:aByteValue |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
986 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
987 |
"Modified: 22.4.1997 / 09:05:26 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
988 |
"Created: 22.4.1997 / 10:43:55 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
989 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
990 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
991 |
nextPutBytes:count from:anObject |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
992 |
"write count bytes from an object. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
993 |
Return the number of bytes written or nil on error. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
994 |
The object must have non-pointer indexed instvars |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
995 |
(i.e. be a ByteArray, String, Float- or DoubleArray). |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
996 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
997 |
Warning: in general, you cannot use this method to pass data to other |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
998 |
architectures since it does not care for byte order or float representation." |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
999 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1000 |
^ self nextPutBytes:count from:anObject startingAt:1 |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1001 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1002 |
"Created: 22.4.1997 / 10:43:59 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1003 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1004 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1005 |
nextPutBytes:count from:anObject startingAt:start |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1006 |
"write count bytes from an object starting at index start. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1007 |
Return the number of bytes written. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1008 |
The object must have non-pointer indexed instvars |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1009 |
(i.e. be a ByteArray, String, Float- or DoubleArray). |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1010 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1011 |
This is provided for compatibility with externalStream; |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1012 |
to support binary storage" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1013 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1014 |
|idx| |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1015 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1016 |
idx := start. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1017 |
1 to:count do:[:i | |
3154 | 1018 |
self nextPutByte:(anObject byteAt:idx). |
1019 |
idx := idx + 1 |
|
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1020 |
]. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1021 |
^ count |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1022 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1023 |
"Created: 22.4.1997 / 10:44:09 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1024 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1025 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1026 |
nextPutBytesFrom:anObject |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1027 |
"write bytes from an object; the number of bytes is defined by |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1028 |
the objects size. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1029 |
Return the number of bytes written or nil on error. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1030 |
The object must have non-pointer indexed instvars |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1031 |
(i.e. be a ByteArray, String, Float- or DoubleArray). |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1032 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1033 |
Warning: in general, you cannot use this method to pass data to other |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1034 |
architectures since it does not care for byte order or float representation." |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1035 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1036 |
^ self nextPutBytes:(anObject size) from:anObject startingAt:1 |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1037 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1038 |
"Created: 22.4.1997 / 10:44:18 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1039 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1040 |
|
611 | 1041 |
nextPutLong:aNumber MSB:msbFlag |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1042 |
"Write the argument, aNumber as a long (four bytes). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1043 |
If msbFlag is true, data is written most-significant byte first; |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1044 |
otherwise least first. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1045 |
Returns the receiver on ok, nil on error. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1046 |
The receiver must support writing of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1047 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1048 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1049 |
where its known that the byte order is some definite one. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1050 |
If you dont care (i.e. talk to other smalltalks) or you can control the |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1051 |
order, please use the corresponding xxxNet methods, which use a standard |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1052 |
network byte order." |
611 | 1053 |
|
5960 | 1054 |
|hh hl lh ll b1 b2 b3 b4| |
1055 |
||
1056 |
ll := aNumber digitByteAt:1. |
|
1057 |
lh := aNumber digitByteAt:2. |
|
1058 |
hl := aNumber digitByteAt:3. |
|
1059 |
hh := aNumber digitByteAt:4. |
|
611 | 1060 |
msbFlag ifTrue:[ |
5960 | 1061 |
"high byte first" |
1062 |
b1 := hh. |
|
1063 |
b2 := hl. |
|
1064 |
b3 := lh. |
|
1065 |
b4 := ll. |
|
2332 | 1066 |
] ifFalse:[ |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1067 |
"low word first" |
5960 | 1068 |
b1 := ll. |
1069 |
b2 := lh. |
|
1070 |
b3 := hl. |
|
1071 |
b4 := hh. |
|
611 | 1072 |
]. |
5960 | 1073 |
self nextPut:b1. |
1074 |
self nextPut:b2. |
|
1075 |
self nextPut:b3. |
|
1076 |
self nextPut:b4. |
|
1077 |
||
1078 |
" |
|
1079 |
|s| |
|
1080 |
||
1081 |
s := #[] writeStream. |
|
1082 |
s nextPutLong:16r12345678 MSB:false. |
|
1083 |
s contents. |
|
1084 |
" |
|
1085 |
" |
|
1086 |
|s| |
|
1087 |
||
1088 |
s := #[] writeStream. |
|
1089 |
s nextPutLong:16r12345678 MSB:true. |
|
1090 |
s contents. |
|
1091 |
" |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1092 |
|
3084 | 1093 |
"Modified: / 1.11.1997 / 18:30:52 / cg" |
611 | 1094 |
! |
1095 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1096 |
nextPutLongNet:aNumber |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1097 |
"Write the argument, aNumber as a long (four bytes) in the network byte order. |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1098 |
Returns the receiver on ok, nil on error. |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1099 |
The receiver must support writing of binary bytes." |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1100 |
|
5823 | 1101 |
^ self nextPutLong:aNumber MSB:true "/ (Socket networkLongOrderIsMSB). |
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1102 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1103 |
"Modified: 10.1.1996 / 19:47:10 / cg" |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1104 |
"Created: 10.1.1996 / 19:50:23 / cg" |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1105 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1106 |
|
611 | 1107 |
nextPutShort:aNumber MSB:msbFlag |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1108 |
"Write the argument, aNumber as a short (two bytes). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1109 |
If msbFlag is true, data is written most-significant byte first; |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1110 |
otherwise least first. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1111 |
Returns the receiver on ok, nil on error. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1112 |
The receiver must support writing of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1113 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1114 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1115 |
where its known that the byte order is some definite one. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1116 |
If you dont care (i.e. talk to other smalltalks) or you can control the |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1117 |
order, please use the corresponding xxxNet methods, which use a standard |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1118 |
network byte order." |
611 | 1119 |
|
2332 | 1120 |
|iNum "{ Class: SmallInteger }" hi lo b1 b2| |
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
1121 |
|
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
1122 |
iNum := aNumber. |
5960 | 1123 |
lo := iNum digitByteAt:1. |
1124 |
hi := iNum digitByteAt:2. |
|
611 | 1125 |
msbFlag ifTrue:[ |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1126 |
"high word first" |
5960 | 1127 |
b1 := hi. |
1128 |
b2 := lo. |
|
2332 | 1129 |
] ifFalse:[ |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1130 |
"low word first" |
5960 | 1131 |
b1 := lo. |
1132 |
b2 := hi. |
|
611 | 1133 |
]. |
5960 | 1134 |
self nextPut:b1. |
1135 |
self nextPut:b2. |
|
1136 |
||
1137 |
" |
|
1138 |
|s| |
|
1139 |
||
1140 |
s := #[] writeStream. |
|
1141 |
s nextPutShort:16r1234 MSB:false. |
|
1142 |
s contents. |
|
1143 |
" |
|
1144 |
" |
|
1145 |
|s| |
|
1146 |
||
1147 |
s := #[] writeStream. |
|
1148 |
s nextPutShort:16r1234 MSB:true. |
|
1149 |
s contents. |
|
1150 |
" |
|
611 | 1151 |
! |
1152 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1153 |
nextPutShortNet:aNumber |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1154 |
"Write the argument, aNumber as a short (two bytes) in the network byte order. |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1155 |
Returns the receiver on ok, nil on error. |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1156 |
The receiver must support writing of binary bytes." |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1157 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1158 |
^ self nextPutLong:aNumber MSB:(Socket networkShortOrderIsMSB). |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1159 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1160 |
"Created: 10.1.1996 / 19:50:33 / cg" |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1161 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1162 |
|
611 | 1163 |
nextPutWord:aNumber |
1164 |
"write the argument, aNumber as a signed short (two bytes); |
|
1165 |
write msb-first for compatibility with other smalltalks. |
|
1166 |
The receiver must support writing of binary bytes. |
|
1167 |
I dont know if it should be named nextPutWord: or nextWordPut:; |
|
1168 |
one of them will vanish ..." |
|
1169 |
||
1170 |
^ self nextPutShort:aNumber MSB:true |
|
1171 |
! |
|
1172 |
||
1173 |
nextShortPut:aNumber MSB:msbFlag |
|
3084 | 1174 |
"for backward compatibility - this will vanish" |
611 | 1175 |
|
1176 |
^ self nextPutShort:aNumber MSB:msbFlag |
|
3084 | 1177 |
|
1178 |
"Modified: / 1.11.1997 / 18:31:05 / cg" |
|
611 | 1179 |
! |
1180 |
||
1181 |
nextWordPut:aNumber |
|
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1182 |
"for ST-80 compatibility: |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1183 |
Write the argument, aNumber as a short (two bytes). |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1184 |
The most significant byte is sent first." |
611 | 1185 |
|
1186 |
^ self nextPutShort:aNumber MSB:true |
|
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1187 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1188 |
"Modified: 10.1.1996 / 19:39:19 / cg" |
611 | 1189 |
! ! |
1190 |
||
1191 |
!Stream methodsFor:'private'! |
|
1192 |
||
1193 |
contentsSpecies |
|
1194 |
"this should return the class of which an instance is |
|
1403 | 1195 |
returned by the #contents method. Here, Array is returned, |
1196 |
since the abstract Stream-class has no idea of the underlying |
|
1197 |
collection class. |
|
1198 |
It is redefined in some subclasses - for example, to return String." |
|
611 | 1199 |
|
1200 |
^ Array |
|
1403 | 1201 |
|
1202 |
"Modified: 15.5.1996 / 17:53:31 / cg" |
|
611 | 1203 |
! ! |
1204 |
||
1205 |
!Stream methodsFor:'queries'! |
|
1206 |
||
1207 |
isBinary |
|
1403 | 1208 |
"return true, if in binary mode. Always returns false here, |
1209 |
to make internalStreams protocol compatible with externalStreams." |
|
611 | 1210 |
|
1211 |
^ false |
|
1403 | 1212 |
|
1213 |
"Modified: 15.5.1996 / 17:53:51 / cg" |
|
611 | 1214 |
! |
1215 |
||
1216 |
isPositionable |
|
1403 | 1217 |
"return true, if the stream supports positioning (some do not). |
1218 |
Since this is an abstract class, false is returned here - just to make certain." |
|
611 | 1219 |
|
1220 |
^ false |
|
1403 | 1221 |
|
1222 |
"Modified: 15.5.1996 / 17:54:16 / cg" |
|
611 | 1223 |
! |
1224 |
||
1447 | 1225 |
isPrinterStream |
1226 |
"return true, if this is a printerStream. |
|
1227 |
Since this is an abstract class, false is returned here." |
|
1228 |
||
1229 |
^ false |
|
1230 |
||
1231 |
"Modified: 15.5.1996 / 17:54:16 / cg" |
|
1232 |
"Created: 3.6.1996 / 12:05:35 / cg" |
|
1233 |
! |
|
1234 |
||
611 | 1235 |
isReadable |
1236 |
"return true, if reading is supported by the recevier. |
|
1403 | 1237 |
This has to be redefined in concrete subclasses." |
611 | 1238 |
|
1239 |
^ self subclassResponsibility |
|
1403 | 1240 |
|
1241 |
"Modified: 15.5.1996 / 17:54:31 / cg" |
|
611 | 1242 |
! |
1243 |
||
1244 |
isStream |
|
1403 | 1245 |
"return true, if the receiver is some kind of Stream. Always return true here." |
611 | 1246 |
|
1247 |
^ true |
|
1403 | 1248 |
|
1249 |
"Modified: 15.5.1996 / 17:54:48 / cg" |
|
611 | 1250 |
! |
1251 |
||
1252 |
isWritable |
|
1253 |
"return true, if writing is supported by the recevier. |
|
1403 | 1254 |
This has to be redefined in concrete subclasses." |
611 | 1255 |
|
1256 |
^ self subclassResponsibility |
|
1403 | 1257 |
|
1258 |
"Modified: 15.5.1996 / 17:54:54 / cg" |
|
611 | 1259 |
! |
1260 |
||
1261 |
lineLength |
|
1403 | 1262 |
"return the lineLength which `looks good' when pretty printed |
1263 |
text is sent to this stream. |
|
1264 |
This has NO meaning whatsoever to regular streams; |
|
1265 |
however, it may be used as a layout hint for prettyprinting functions |
|
1266 |
- for compatibility with TextCollectors, which returns its views actual |
|
1267 |
line length, and allows the prettyprinter to wrap at that position." |
|
611 | 1268 |
|
1269 |
^ 80 |
|
1403 | 1270 |
|
1271 |
"Modified: 15.5.1996 / 17:57:01 / cg" |
|
3493
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1272 |
! |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1273 |
|
5395 | 1274 |
lineNumber |
1275 |
"return the current lineNumber if known" |
|
1276 |
||
1277 |
^ nil |
|
1278 |
||
1279 |
||
1280 |
! |
|
1281 |
||
3493
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1282 |
pageFormat |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1283 |
"return the pageFormat - nil here. |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1284 |
This has NO meaning whatsoever to regular streams; |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1285 |
however, it has been added for protocol compatibility with printerStreams" |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1286 |
|
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1287 |
^ nil |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1288 |
|
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1289 |
"Modified: / 15.5.1996 / 17:57:01 / cg" |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1290 |
"Created: / 29.5.1998 / 16:57:48 / cg" |
611 | 1291 |
! ! |
1292 |
||
62 | 1293 |
!Stream methodsFor:'reading'! |
1 | 1294 |
|
1295 |
next |
|
1296 |
"return the next element of the stream |
|
1297 |
- we do not know here how to do it, it must be redefined in subclass" |
|
1298 |
||
1299 |
^ self subclassResponsibility |
|
1300 |
! |
|
1301 |
||
1302 |
next:count |
|
1403 | 1303 |
"return the next count elements of the stream as aCollection, |
1304 |
which depends on the streams type - (see #contentsSpecies)." |
|
1 | 1305 |
|
329 | 1306 |
|answerStream |
285 | 1307 |
cnt "{ Class: SmallInteger }" | |
1 | 1308 |
|
329 | 1309 |
answerStream := WriteStream on:(self contentsSpecies new). |
285 | 1310 |
cnt := count. |
1311 |
1 to:cnt do:[:index | |
|
2332 | 1312 |
answerStream nextPut:(self next) |
1 | 1313 |
]. |
329 | 1314 |
^ answerStream contents |
1 | 1315 |
|
275 | 1316 |
" |
1317 |
(ReadStream on:#(1 2 3 4 5)) next:3 |
|
1318 |
(ReadStream on:'hello') next:3 |
|
1319 |
" |
|
1403 | 1320 |
|
1321 |
"Modified: 15.5.1996 / 17:57:58 / cg" |
|
1 | 1322 |
! |
1323 |
||
285 | 1324 |
nextAvailable:count |
1403 | 1325 |
"return the next count elements of the stream as aCollection. |
285 | 1326 |
If the stream reaches the end before count elements have been read, |
1403 | 1327 |
return what is available. (i.e. a shorter collection). |
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1328 |
The type of collection is specified in #contentsSpecies." |
285 | 1329 |
|
345 | 1330 |
|answerStream |
285 | 1331 |
cnt "{ Class: SmallInteger }"| |
1332 |
||
329 | 1333 |
answerStream := WriteStream on:(self contentsSpecies new). |
285 | 1334 |
cnt := count. |
1335 |
1 to:cnt do:[:index | |
|
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1336 |
self atEnd ifTrue:[ |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1337 |
^ answerStream contents |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1338 |
]. |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1339 |
answerStream nextPut:(self next) |
285 | 1340 |
]. |
329 | 1341 |
^ answerStream contents |
285 | 1342 |
|
1343 |
" |
|
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1344 |
(ReadStream on:#(1 2 3 4 5)) nextAvailable:3 |
285 | 1345 |
(ReadStream on:#(1 2 3 4 5)) nextAvailable:10 |
1346 |
(ReadStream on:'hello') nextAvailable:3 |
|
1347 |
(ReadStream on:'hello') nextAvailable:10 |
|
1348 |
" |
|
1403 | 1349 |
|
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1350 |
"Modified: / 16.6.1998 / 15:52:41 / cg" |
285 | 1351 |
! |
1352 |
||
1 | 1353 |
nextMatchFor:anObject |
62 | 1354 |
"read an element from the receiver, return true if it was equal to |
1403 | 1355 |
the argument, anObject; false otherwise." |
62 | 1356 |
|
1357 |
^ (self next = anObject) |
|
1358 |
||
1359 |
" |
|
1360 |
|s| |
|
1361 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1362 |
s nextMatchFor:2 |
|
1363 |
" |
|
1364 |
" |
|
1365 |
|s| |
|
1366 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1367 |
s nextMatchFor:2. |
|
1368 |
s nextMatchFor:2 |
|
1369 |
" |
|
1403 | 1370 |
|
1371 |
"Modified: 15.5.1996 / 17:58:57 / cg" |
|
62 | 1372 |
! |
1373 |
||
2253
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1374 |
nextUpTo:anObject |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1375 |
"read a collection of all objects up-to anObject and return these |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1376 |
elements, but excluding anObject. |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1377 |
The next read operation will return anObject. |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1378 |
If anObject is not encountered, all elements up to the end are read |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1379 |
and returned, and the stream is positioned at the end. |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1380 |
Compare this with #upTo: which positions behind anObject" |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1381 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1382 |
|answerStream element| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1383 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1384 |
answerStream := WriteStream on:(self contentsSpecies new). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1385 |
[self atEnd] whileFalse:[ |
2332 | 1386 |
element := self peek. |
1387 |
(element = anObject) ifTrue: [ |
|
1388 |
^ answerStream contents |
|
1389 |
]. |
|
1390 |
answerStream nextPut:element. |
|
1391 |
self next. |
|
2253
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1392 |
]. |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1393 |
^ answerStream contents |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1394 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1395 |
" |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1396 |
|s| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1397 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1398 |
Transcript showCR:(s nextUpTo:4). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1399 |
Transcript showCR:s next |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1400 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1401 |
|s| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1402 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1403 |
Transcript showCR:(s upTo:4). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1404 |
Transcript showCR:s next |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1405 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1406 |
|s| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1407 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1408 |
Transcript showCR:(s nextUpTo:9). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1409 |
Transcript showCR:s next |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1410 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1411 |
|s| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1412 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1413 |
Transcript showCR:(s upTo:9). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1414 |
Transcript showCR:s next |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1415 |
" |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1416 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1417 |
"Created: 24.1.1997 / 14:08:35 / cg" |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1418 |
"Modified: 24.1.1997 / 14:09:49 / cg" |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1419 |
! |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1420 |
|
3315 | 1421 |
peekOrNil |
1422 |
"like #peek, this returns the next readAhead element, if available. |
|
1423 |
However, unlike #peek, this does not raise an atEnd-query signal - even |
|
1424 |
if handled. Instead, nil is returned immediately." |
|
1425 |
||
1426 |
self atEnd ifTrue:[^ nil]. |
|
1427 |
^ self peek |
|
1428 |
||
1429 |
"Created: / 5.3.1998 / 02:56:49 / cg" |
|
1430 |
"Modified: / 5.3.1998 / 13:45:07 / cg" |
|
1431 |
! |
|
1432 |
||
62 | 1433 |
skip:count |
1434 |
"skip count objects, return the receiver" |
|
1435 |
||
345 | 1436 |
|n "{ Class: SmallInteger }"| |
1437 |
||
1438 |
n := count. |
|
1439 |
||
62 | 1440 |
"dont know how to unread ..." |
345 | 1441 |
n < 0 ifTrue:[ |
4467 | 1442 |
PositionErrorSignal raiseRequest. |
1443 |
^ self |
|
62 | 1444 |
]. |
345 | 1445 |
n timesRepeat:self next |
62 | 1446 |
|
1447 |
" |
|
1448 |
|s| |
|
1449 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1450 |
s skip:4. |
|
1451 |
s next |
|
1452 |
" |
|
4467 | 1453 |
|
1454 |
"Modified: / 30.7.1999 / 12:12:10 / cg" |
|
62 | 1455 |
! |
1456 |
||
1457 |
skipFor:anObject |
|
1403 | 1458 |
"skip all objects up-to and including anObject; |
1459 |
return the element after anObject." |
|
62 | 1460 |
|
1461 |
(self skipThrough:anObject) notNil ifTrue:[ |
|
6010 | 1462 |
^ self next |
62 | 1463 |
]. |
1464 |
^ nil |
|
1465 |
||
1466 |
" |
|
1467 |
|s| |
|
1468 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
6010 | 1469 |
s skipFor:4. |
1470 |
" |
|
1471 |
" |
|
1472 |
|s| |
|
1473 |
s := ReadStream on:'12345678'. |
|
1474 |
s skipFor:$4. |
|
62 | 1475 |
" |
1403 | 1476 |
|
1477 |
"Modified: 15.5.1996 / 17:59:23 / cg" |
|
62 | 1478 |
! |
1479 |
||
1480 |
skipThrough:anObject |
|
6010 | 1481 |
"skip all objects up-to and including anObject. |
1482 |
Return the receiver if skip was successful, |
|
1483 |
otherwise (i.e. if not found) return nil and leave the stream positioned at the end. |
|
62 | 1484 |
The next read operation will return the element after anObject." |
1 | 1485 |
|
1486 |
|nextElement| |
|
1487 |
||
1488 |
[self atEnd] whileFalse:[ |
|
6010 | 1489 |
nextElement := self next. |
1490 |
(nextElement = anObject) ifTrue: [ ^ self ] |
|
1 | 1491 |
]. |
1492 |
^ nil |
|
2 | 1493 |
|
62 | 1494 |
" |
1495 |
|s| |
|
1496 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1497 |
s skipThrough:4. |
|
1498 |
s next |
|
1499 |
" |
|
6010 | 1500 |
" |
1501 |
|s| |
|
1502 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1503 |
s skipThrough:4. |
|
1504 |
s skipThrough:4. |
|
1505 |
s next |
|
1506 |
" |
|
1507 |
" |
|
1508 |
|s| |
|
1509 |
s := ReadStream on:'12345678'. |
|
1510 |
s skipThrough:$4. |
|
1511 |
s next |
|
1512 |
" |
|
1513 |
" |
|
1514 |
|s| |
|
1515 |
s := ReadStream on:'12345678'. |
|
1516 |
s skipThrough:$4. |
|
1517 |
s skipThrough:$4. |
|
1518 |
s next |
|
1519 |
" |
|
1520 |
" |
|
1521 |
|s| |
|
1522 |
s := ReadStream on:'12345678'. |
|
1523 |
s skipThrough:$4. |
|
1524 |
s skipThrough:$4. |
|
1525 |
s atEnd |
|
1526 |
" |
|
77 | 1527 |
! |
1528 |
||
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1529 |
skipThroughAll:aCollection |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1530 |
"skip for and through the sequence given by the argument, aCollection; |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1531 |
return nil if not found, the receiver otherwise. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1532 |
On a successful match, the next read will return elements after aCollection; |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1533 |
if no match was found, the receiver will be positioned at the end." |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1534 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1535 |
|buffer l first idx| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1536 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1537 |
l := aCollection size. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1538 |
first := aCollection at:1. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1539 |
[self atEnd] whileFalse:[ |
2332 | 1540 |
buffer isNil ifTrue:[ |
1541 |
buffer := self nextAvailable:l. |
|
1542 |
]. |
|
1543 |
buffer = aCollection ifTrue:[ |
|
1544 |
^ self |
|
1545 |
]. |
|
1546 |
idx := buffer indexOf:first startingAt:2. |
|
1547 |
idx == 0 ifTrue:[ |
|
1548 |
buffer := nil |
|
1549 |
] ifFalse:[ |
|
1550 |
buffer := (buffer copyFrom:idx) , (self nextAvailable:(idx - 1)) |
|
1551 |
] |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1552 |
]. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1553 |
^ nil |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1554 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1555 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1556 |
|s| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1557 |
s := ReadStream on:'12345678901234567890'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1558 |
s skipThroughAll:'901'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1559 |
s upToEnd |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1560 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1561 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1562 |
|s| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1563 |
s := ReadStream on:'12345678901234567890'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1564 |
s skipThroughAll:'1234'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1565 |
s upToEnd |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1566 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1567 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1568 |
|s| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1569 |
s := ReadStream on:'12345678901234567890'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1570 |
s skipThroughAll:'999'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1571 |
s atEnd |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1572 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1573 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1574 |
"Created: 11.1.1997 / 18:55:13 / cg" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1575 |
"Modified: 11.1.1997 / 19:09:06 / cg" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1576 |
! |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1577 |
|
611 | 1578 |
through:anObject |
1579 |
"read a collection of all objects up-to anObject and return these |
|
1580 |
elements, including anObject. |
|
1581 |
The next read operation will return the element after anObject. |
|
1409 | 1582 |
If anObject is not encountered, all elements up to the end are read |
1583 |
and returned. |
|
611 | 1584 |
Compare this with #upTo: which also reads up to some object |
1585 |
and also positions behind it, but does not include it in the returned |
|
1586 |
value." |
|
1587 |
||
1588 |
|answerStream element| |
|
1589 |
||
1590 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1591 |
[self atEnd] whileFalse:[ |
|
2332 | 1592 |
element := self next. |
1593 |
answerStream nextPut:element. |
|
1594 |
(element = anObject) ifTrue: [ |
|
1595 |
^ answerStream contents |
|
1596 |
] |
|
611 | 1597 |
]. |
1598 |
^ answerStream contents |
|
1599 |
||
1600 |
" |
|
1601 |
|s| |
|
1602 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1422 | 1603 |
Transcript showCR:(s through:4). |
1604 |
Transcript showCR:s next |
|
1409 | 1605 |
|
1606 |
|s| |
|
1607 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1422 | 1608 |
Transcript showCR:(s through:9). |
1609 |
Transcript showCR:s next |
|
1409 | 1610 |
|
611 | 1611 |
|s| |
1612 |
s := ReadStream on:'hello world'. |
|
1422 | 1613 |
Transcript showCR:(s through:Character space). |
1614 |
Transcript showCR:(s upToEnd) |
|
611 | 1615 |
" |
1409 | 1616 |
|
1617 |
"Modified: 17.5.1996 / 08:51:40 / cg" |
|
611 | 1618 |
! |
1619 |
||
1548 | 1620 |
throughAll:aCollection |
1621 |
"read & return a collection of all objects up-to and including |
|
1622 |
a subcollection given by aCollection. |
|
1623 |
(i.e. read until a ``substring'' is encountered.) |
|
1624 |
The next read operation will return the element after aCollection. |
|
1625 |
If aCollection is not encountered, all elements up to the end are read |
|
1626 |
and returned." |
|
1627 |
||
1628 |
|answerStream element last rslt| |
|
1629 |
||
1630 |
last := aCollection last. |
|
1631 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1632 |
[self atEnd] whileFalse:[ |
|
2332 | 1633 |
element := self next. |
1634 |
answerStream nextPut:element. |
|
1635 |
element == last ifTrue:[ |
|
1636 |
((rslt := answerStream contents) endsWith:aCollection) ifTrue:[ |
|
1637 |
^ rslt |
|
1638 |
] |
|
1639 |
]. |
|
1548 | 1640 |
]. |
1641 |
^ answerStream contents |
|
1642 |
||
1643 |
" |
|
1644 |
|s| |
|
1645 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1646 |
Transcript showCR:(s throughAll:#(4 4 4)). |
|
1647 |
Transcript showCR:s next |
|
1648 |
||
1649 |
|s| |
|
1650 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1651 |
Transcript showCR:(s throughAll:#(4 5 6)). |
|
1652 |
Transcript showCR:s next |
|
1653 |
||
1654 |
|s| |
|
1655 |
s := ReadStream on:'hello world, this is some text'. |
|
1656 |
Transcript showCR:(s throughAll:'world'). |
|
1657 |
Transcript showCR:(s throughAll:'some'). |
|
1658 |
Transcript showCR:s upToEnd. |
|
1659 |
" |
|
1660 |
||
1661 |
"Modified: 15.7.1996 / 09:08:07 / cg" |
|
1662 |
! |
|
1663 |
||
3169
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1664 |
throughAny:aCollection |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1665 |
"read & return a collection of all objects up-to and including |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1666 |
an element contained in aCollection. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1667 |
(i.e. read until any from aCollection is encountered.) |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1668 |
If no such character is encountered, all elements up to the end are read |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1669 |
and returned." |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1670 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1671 |
|answerStream element last| |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1672 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1673 |
last := aCollection last. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1674 |
answerStream := WriteStream on:(self contentsSpecies new). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1675 |
[self atEnd] whileFalse:[ |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1676 |
element := self next. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1677 |
answerStream nextPut:element. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1678 |
(aCollection includes:element) ifTrue:[ |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1679 |
^ answerStream contents |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1680 |
]. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1681 |
]. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1682 |
^ answerStream contents |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1683 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1684 |
" |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1685 |
|s| |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1686 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1687 |
Transcript showCR:(s throughAny:#(3 4 5)). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1688 |
Transcript showCR:s next |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1689 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1690 |
|s| |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1691 |
s := ReadStream on:'hello world, this is some text'. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1692 |
Transcript showCR:(s throughAny:'wt'). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1693 |
Transcript showCR:(s throughAny:'wt'). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1694 |
Transcript showCR:s upToEnd. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1695 |
" |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1696 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1697 |
"Modified: / 11.1.1998 / 15:28:04 / cg" |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1698 |
! |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1699 |
|
427 | 1700 |
upTo:anObject |
1701 |
"read a collection of all objects up-to anObject and return these |
|
1702 |
elements, but excluding anObject. |
|
1703 |
The next read operation will return the element after anObject. |
|
3169
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1704 |
(i.e. anObject is considered a separator, which is skipped) |
3172
f73912c49864
Implement #upToAll: consistent with #upTo: and #upToAny: in Stream.
Stefan Vogel <sv@exept.de>
parents:
3169
diff
changeset
|
1705 |
Similar to #through:, but the matching object is not included in the |
3169
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1706 |
returned collection. |
1409 | 1707 |
If anObject is not encountered, all elements up to the end are read |
1708 |
and returned. |
|
427 | 1709 |
Compare this with #through: which also reads up to some object |
1710 |
and also positions behind it, but DOES include it in the returned |
|
1711 |
value." |
|
1712 |
||
1713 |
|answerStream element| |
|
1714 |
||
1715 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1716 |
[self atEnd] whileFalse:[ |
|
3176 | 1717 |
element := self next. |
1718 |
(element = anObject) ifTrue: [ |
|
1719 |
^ answerStream contents |
|
1720 |
]. |
|
1721 |
answerStream nextPut:element. |
|
427 | 1722 |
]. |
1723 |
^ answerStream contents |
|
1724 |
||
1725 |
" |
|
1726 |
|s| |
|
1727 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1422 | 1728 |
Transcript showCR:(s upTo:4). |
1729 |
Transcript showCR:s next |
|
427 | 1730 |
|
3169
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1731 |
compare the above to: |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1732 |
|s| |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1733 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1734 |
Transcript showCR:(s through:4). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1735 |
Transcript showCR:s next |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1736 |
|
427 | 1737 |
|s| |
1409 | 1738 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
1422 | 1739 |
Transcript showCR:(s upTo:9). |
1740 |
Transcript showCR:s next |
|
1409 | 1741 |
|
1742 |
|s| |
|
427 | 1743 |
s := ReadStream on:'hello world'. |
1422 | 1744 |
Transcript showCR:(s upTo:Character space). |
1745 |
Transcript showCR:(s upToEnd) |
|
427 | 1746 |
|
1747 |
(ReadStream on:'12345678905') upTo:$5; upTo:$5 |
|
1748 |
||
1749 |
(ReadStream on:'123456') upTo:$7 |
|
1750 |
||
1751 |
(ReadStream on:#(1 2 3 4 5 6)) upTo:4 |
|
1752 |
||
1753 |
(ReadStream on:'line 1 |
|
3176 | 1754 |
line 2') upTo:Character cr |
427 | 1755 |
|
1756 |
'Makefile' asFilename readStream upTo:Character cr;upTo:Character cr |
|
1757 |
" |
|
1409 | 1758 |
|
3169
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1759 |
"Modified: / 12.1.1998 / 21:58:38 / cg" |
3172
f73912c49864
Implement #upToAll: consistent with #upTo: and #upToAny: in Stream.
Stefan Vogel <sv@exept.de>
parents:
3169
diff
changeset
|
1760 |
"Modified: / 15.1.1998 / 23:28:47 / stefan" |
f73912c49864
Implement #upToAll: consistent with #upTo: and #upToAny: in Stream.
Stefan Vogel <sv@exept.de>
parents:
3169
diff
changeset
|
1761 |
! |
f73912c49864
Implement #upToAll: consistent with #upTo: and #upToAny: in Stream.
Stefan Vogel <sv@exept.de>
parents:
3169
diff
changeset
|
1762 |
|
3586 | 1763 |
upToAllExcluding:aCollection |
1764 |
"read a collection of all objects up-to a element which is contained in |
|
1765 |
aCollection and return these elements, but excluding the matching one. |
|
1766 |
The next read operation will return the element after aCollection. |
|
1767 |
If no such element is encountered, all elements up to the end are read |
|
1768 |
and returned. |
|
1769 |
Compare this with #throughAll: which also reads up to some object |
|
1770 |
and also positions behind it, but DOES include it in the returned |
|
1771 |
value." |
|
1772 |
||
1773 |
|answerStream element last rslt| |
|
1774 |
||
1775 |
last := aCollection last. |
|
1776 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1777 |
[self atEnd] whileFalse:[ |
|
1778 |
element := self next. |
|
1779 |
answerStream nextPut:element. |
|
1780 |
element == last ifTrue:[ |
|
1781 |
((rslt := answerStream contents) endsWith:aCollection) ifTrue:[ |
|
1782 |
^ rslt copyWithoutLast:aCollection size |
|
1783 |
] |
|
1784 |
]. |
|
1785 |
]. |
|
1786 |
^ answerStream contents |
|
1787 |
||
1788 |
" |
|
1789 |
|s| |
|
1790 |
s := ReadStream on:'hello world world'. |
|
1791 |
Transcript show:'<'; show:(s upToAllExcluding:'wo'); showCR:'>'. |
|
1792 |
Transcript show:'<'; show:(s upToAllExcluding:'wo'); showCR:'>'. |
|
1793 |
Transcript show:'<'; show:(s upToEnd); showCR:'>'. |
|
1794 |
" |
|
1795 |
||
1796 |
"Created: / 15.6.1998 / 19:11:31 / cg" |
|
1797 |
! |
|
1798 |
||
2894 | 1799 |
upToAny:aCollectionOfObjects |
2420 | 1800 |
"read a collection of all objects up-to a element which is contained in |
1801 |
aCollectionOfObjects and return these elements, but excluding the matching one. |
|
1802 |
The next read operation will return the element after anObject. |
|
1803 |
If no such element is encountered, all elements up to the end are read |
|
1804 |
and returned. |
|
1805 |
Compare this with #throughAll: which also reads up to some object |
|
1806 |
and also positions behind it, but DOES include it in the returned |
|
1807 |
value." |
|
1808 |
||
1809 |
|answerStream element| |
|
1810 |
||
1811 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1812 |
[self atEnd] whileFalse:[ |
|
3154 | 1813 |
element := self next. |
1814 |
(aCollectionOfObjects includes:element) ifTrue: [ |
|
1815 |
^ answerStream contents |
|
1816 |
]. |
|
1817 |
answerStream nextPut:element. |
|
2420 | 1818 |
]. |
1819 |
^ answerStream contents |
|
1820 |
||
1821 |
" |
|
1822 |
|s| |
|
1823 |
s := ReadStream on:'hello world'. |
|
3154 | 1824 |
Transcript showCR:(s upToAny:(Array with:Character space)). |
2420 | 1825 |
Transcript showCR:(s upToEnd) |
1826 |
||
3154 | 1827 |
'Makefile' asFilename readStream upToAny:($A to:$Z) |
1828 |
" |
|
2420 | 1829 |
|
3154 | 1830 |
"Created: / 30.8.1997 / 03:02:05 / cg" |
1831 |
"Modified: / 11.1.1998 / 15:19:18 / cg" |
|
2420 | 1832 |
! |
1833 |
||
77 | 1834 |
upToEnd |
1835 |
"return a collection of the elements up-to the end. |
|
1403 | 1836 |
Return an empty collection, if the stream-end is already at the end." |
77 | 1837 |
|
1838 |
|answerStream| |
|
1839 |
||
1840 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1841 |
[self atEnd] whileFalse:[ |
|
2332 | 1842 |
answerStream nextPut:(self next) |
77 | 1843 |
]. |
1844 |
^ answerStream contents |
|
1845 |
||
275 | 1846 |
" |
1847 |
(ReadStream on:'1234567890') upToEnd |
|
1848 |
('123456' readStream) next; next; upToEnd |
|
427 | 1849 |
('1 23456' readStream) upTo:Character space; upToEnd |
1403 | 1850 |
('12' readStream) next; next; upToEnd |
275 | 1851 |
" |
1403 | 1852 |
|
1853 |
"Modified: 15.5.1996 / 18:00:39 / cg" |
|
611 | 1854 |
! ! |
77 | 1855 |
|
3084 | 1856 |
!Stream methodsFor:'reading - strings'! |
1857 |
||
1858 |
nextAlphaNumericWord |
|
1859 |
"read the next word (i.e. up to non letter-or-digit). |
|
1860 |
Return a string containing those characters. |
|
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1861 |
Any leading non-alphaNumeric chars are skipped." |
3084 | 1862 |
|
1863 |
|s c| |
|
1864 |
||
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1865 |
[self atEnd |
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1866 |
or:[(c := self peek) isAlphaNumeric]] whileFalse:[ |
3084 | 1867 |
self next |
1868 |
]. |
|
1869 |
||
1870 |
self atEnd ifTrue:[^ nil]. |
|
1871 |
||
1872 |
s := ''. |
|
1873 |
||
1874 |
[self atEnd not |
|
1875 |
and:[(c := self peek) isLetterOrDigit]] whileTrue:[ |
|
1876 |
s := s copyWith:c. |
|
1877 |
self next |
|
1878 |
]. |
|
1879 |
||
1880 |
s size == 0 ifTrue:[^ nil]. |
|
1881 |
^ s. |
|
1882 |
||
1883 |
" |
|
1884 |
|s| |
|
1885 |
||
1886 |
s := 'hello world 1234 foo1 foo2' readStream. |
|
1887 |
[s atEnd] whileFalse:[ |
|
1888 |
Transcript showCR:(s nextAlphaNumericWord). |
|
1889 |
]. |
|
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1890 |
" |
3084 | 1891 |
|
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1892 |
" |
3084 | 1893 |
|s| |
1894 |
||
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1895 |
s := 'hello +++ #world ###123###abc### 1234 foo1 foo2' readStream. |
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1896 |
[s atEnd] whileFalse:[ |
3084 | 1897 |
Transcript showCR:(s nextAlphaNumericWord). |
1898 |
]. |
|
1899 |
" |
|
1900 |
||
1901 |
"Modified: 15.5.1996 / 17:51:42 / cg" |
|
1902 |
! |
|
1903 |
||
1904 |
nextLine |
|
1905 |
"return the characters upTo (but excluding) the next cr (carriage return) |
|
1906 |
character (i.e. read a single line of text). |
|
1907 |
Added for protocol compatibility with externalStreams." |
|
1908 |
||
3462 | 1909 |
self atEnd ifTrue:[ |
1910 |
^ self pastEnd |
|
1911 |
]. |
|
3084 | 1912 |
^ self upTo:Character cr. |
1913 |
||
3462 | 1914 |
"Modified: / 19.5.1998 / 17:26:25 / cg" |
3084 | 1915 |
! |
1916 |
||
1917 |
nextWord |
|
1918 |
"return the next characters which form an alphanumeric word |
|
1919 |
(i.e. everything upTo (but excluding) the next non alphanumeric |
|
1920 |
element)" |
|
1921 |
||
1922 |
^ self nextAlphaNumericWord |
|
1923 |
||
1924 |
"Modified: 15.5.1996 / 17:39:32 / cg" |
|
1925 |
! ! |
|
1926 |
||
611 | 1927 |
!Stream methodsFor:'testing'! |
77 | 1928 |
|
611 | 1929 |
atEnd |
1930 |
"return true if the end of the stream has been reached; |
|
1931 |
- we do not know here how to do it, it must be redefined in subclass" |
|
77 | 1932 |
|
611 | 1933 |
^ self subclassResponsibility |
1 | 1934 |
! ! |
1935 |
||
62 | 1936 |
!Stream methodsFor:'writing'! |
1 | 1937 |
|
339 | 1938 |
commit |
1462
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1939 |
"alias for flush -- ST80 compatibility" |
339 | 1940 |
|
1462
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1941 |
^ self flush |
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1942 |
|
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1943 |
"Modified: 7.5.1996 / 23:55:39 / stefan" |
339 | 1944 |
! |
1945 |
||
611 | 1946 |
cr |
1403 | 1947 |
"append a carriage-return to the stream. |
1948 |
This is only allowed, if the receiver supports writing." |
|
611 | 1949 |
|
1950 |
self nextPut:(Character cr) |
|
1403 | 1951 |
|
1952 |
"Modified: 15.5.1996 / 18:01:21 / cg" |
|
611 | 1953 |
! |
1954 |
||
1955 |
crTab |
|
1956 |
"append a carriage-return followed by a tab to the stream. |
|
1403 | 1957 |
Same as crtab for ST/X backward compatibility. |
1958 |
This is only allowed, if the receiver supports writing." |
|
611 | 1959 |
|
5873 | 1960 |
<resource:#obsolete> |
1961 |
||
1962 |
self obsoleteMethodWarning:'use crtab'. |
|
611 | 1963 |
self crtab |
1403 | 1964 |
|
1965 |
"Modified: 15.5.1996 / 18:01:28 / cg" |
|
611 | 1966 |
! |
1967 |
||
1968 |
crtab |
|
1403 | 1969 |
"append a carriage-return followed by a tab to the stream. |
1970 |
This is only allowed, if the receiver supports writing." |
|
1 | 1971 |
|
611 | 1972 |
self crtab:1 |
1403 | 1973 |
|
1974 |
"Modified: 15.5.1996 / 18:01:35 / cg" |
|
611 | 1975 |
! |
1976 |
||
1977 |
crtab:n |
|
1403 | 1978 |
"append a carriage-return followed by n tabs to the stream. |
1979 |
This is only allowed, if the receiver supports writing." |
|
611 | 1980 |
|
1981 |
self nextPut:(Character cr). |
|
1982 |
self next:n put:(Character tab) |
|
1403 | 1983 |
|
1984 |
"Modified: 15.5.1996 / 18:01:39 / cg" |
|
611 | 1985 |
! |
1986 |
||
1987 |
endEntry |
|
1988 |
"ignored here - for compatibility with Transcript" |
|
1989 |
||
1990 |
^ self |
|
1991 |
! |
|
1992 |
||
1993 |
ff |
|
1403 | 1994 |
"append a form-feed (new-pagee) to the receiver-stream. |
1995 |
This is only allowed, if the receiver supports writing." |
|
611 | 1996 |
|
1997 |
self nextPut:(Character ff) |
|
1403 | 1998 |
|
1999 |
"Modified: 15.5.1996 / 18:01:47 / cg" |
|
1 | 2000 |
! |
2001 |
||
701 | 2002 |
flush |
1462
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
2003 |
"write out all unbuffered data - ignored here, but added |
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
2004 |
to make internalStreams protocol compatible with externalStreams" |
701 | 2005 |
|
1462
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
2006 |
"Modified: 7.5.1996 / 23:54:53 / stefan" |
701 | 2007 |
! |
2008 |
||
1 | 2009 |
next:count put:anObject |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2010 |
"put the argument, anObject count times onto the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2011 |
This is only allowed, if the receiver supports writing." |
1 | 2012 |
|
345 | 2013 |
|n "{ Class: SmallInteger }"| |
2014 |
||
2015 |
n := count. |
|
2016 |
n timesRepeat:[self nextPut:anObject]. |
|
1 | 2017 |
^ anObject |
62 | 2018 |
|
2019 |
" |
|
2020 |
|s| |
|
2021 |
||
2022 |
s := WriteStream on:#(). |
|
2023 |
s nextPut:1. |
|
2024 |
s next:5 put:2. |
|
2025 |
s nextPut:3. |
|
2026 |
s contents |
|
2027 |
" |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2028 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2029 |
"Modified: 11.7.1996 / 10:00:13 / cg" |
1 | 2030 |
! |
2031 |
||
611 | 2032 |
nextPut:anObject |
2033 |
"put the argument, anObject onto the receiver |
|
2034 |
- we do not know here how to do it, it must be redefined in subclass" |
|
2035 |
||
2036 |
^ self subclassResponsibility |
|
2037 |
! |
|
2038 |
||
1 | 2039 |
nextPutAll:aCollection |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2040 |
"put all elements of the argument, aCollection onto the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2041 |
This is only allowed, if the receiver supports writing." |
1 | 2042 |
|
2043 |
aCollection do:[:element | |
|
2332 | 2044 |
self nextPut:element |
1 | 2045 |
]. |
2046 |
^ aCollection |
|
62 | 2047 |
|
2048 |
" |
|
2049 |
|s| |
|
2050 |
||
2051 |
s := WriteStream on:#(). |
|
2052 |
s nextPutAll:(1 to:5). |
|
2053 |
s nextPutAll:#('one' 'two' 'three'). |
|
2054 |
s contents |
|
2055 |
" |
|
2056 |
" |
|
2057 |
|s| |
|
2058 |
||
2059 |
s := WriteStream on:(String new). |
|
2060 |
s nextPutAll:($a to:$f). |
|
2061 |
s nextPutAll:'one '; |
|
2062 |
nextPutAll:'two '; |
|
2063 |
nextPutAll:'three'. |
|
2064 |
s contents |
|
2065 |
" |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2066 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2067 |
"Modified: 11.7.1996 / 10:00:21 / cg" |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2068 |
! |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2069 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2070 |
nextPutAll:aCollection startingAt:first |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2071 |
"append the elements starting with index to the end |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2072 |
of the argument, aCollection onto the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2073 |
This is only allowed, if the receiver supports writing." |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2074 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2075 |
self nextPutAll:aCollection startingAt:first to:(aCollection size). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2076 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2077 |
" |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2078 |
|s| |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2079 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2080 |
s := WriteStream on:#(). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2081 |
s nextPutAll:#('one' 'two' 'three' 'four' 'five') startingAt:2. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2082 |
s contents |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2083 |
" |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2084 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2085 |
"Modified: 11.7.1996 / 10:00:28 / cg" |
1 | 2086 |
! |
2087 |
||
2088 |
nextPutAll:aCollection startingAt:first to:last |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2089 |
"append the elements with index from first to last |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2090 |
of the argument, aCollection onto the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2091 |
This is only allowed, if the receiver supports writing." |
1 | 2092 |
|
2093 |
aCollection from:first to:last do:[:element | |
|
2332 | 2094 |
self nextPut:element |
1 | 2095 |
]. |
2096 |
^ aCollection |
|
62 | 2097 |
|
2098 |
" |
|
2099 |
|s| |
|
2100 |
||
2101 |
s := WriteStream on:#(). |
|
2102 |
s nextPutAll:#('one' 'two' 'three' 'four' 'five') startingAt:2 to:4. |
|
2103 |
s contents |
|
2104 |
" |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2105 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2106 |
"Modified: 11.7.1996 / 10:00:32 / cg" |
1 | 2107 |
! |
2108 |
||
5628
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2109 |
nextPutAllUntranslated:aCollection |
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2110 |
"for compatibility with printStreams (putAll - as-is without escapes)" |
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2111 |
|
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2112 |
self nextPutAll:aCollection |
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2113 |
! |
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2114 |
|
743 | 2115 |
nextPutLine:aCollection |
2116 |
"put all elements of the argument, aCollection onto the receiver, |
|
1949 | 2117 |
and append a cr (carriage return). |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2118 |
This is only useful with character streams in textMode, |
1949 | 2119 |
and only allowed, if the receiver supports writing." |
743 | 2120 |
|
2121 |
self nextPutAll:aCollection. |
|
2122 |
self cr. |
|
2123 |
||
2124 |
"Created: 13.12.1995 / 10:49:17 / cg" |
|
1949 | 2125 |
"Modified: 8.11.1996 / 23:53:41 / cg" |
743 | 2126 |
! |
2127 |
||
611 | 2128 |
print:anObject |
2129 |
"append a printed representation of anObject to the receiver. |
|
1403 | 2130 |
Same as 'anObject printOn:self'; Added for ST-80 compatibility." |
2 | 2131 |
|
611 | 2132 |
anObject printOn:self |
1403 | 2133 |
|
2134 |
" |
|
2135 |
|s| |
|
2136 |
||
2137 |
s := WriteStream on:''. |
|
2138 |
s nextPutAll:'one '; |
|
2139 |
print:1; |
|
2140 |
nextPutAll:' two '; |
|
2141 |
print:2. |
|
2142 |
||
2143 |
s contents |
|
2144 |
" |
|
2145 |
||
2146 |
"Modified: 15.5.1996 / 18:06:06 / cg" |
|
2 | 2147 |
! |
2148 |
||
1403 | 2149 |
show:something |
2150 |
"append a printed representation of the argument to the stream. |
|
2151 |
This makes streams somewhat compatible to TextCollectors and |
|
2152 |
allows you to say: |
|
2332 | 2153 |
Smalltalk at:#Transcript put:Stdout |
1422 | 2154 |
or to use #show:/#showCR: with internal or external streams." |
1 | 2155 |
|
1403 | 2156 |
^ self nextPutAll:something printString |
2157 |
||
2158 |
"Modified: 15.5.1996 / 18:04:48 / cg" |
|
1 | 2159 |
! |
2160 |
||
1414 | 2161 |
showCR:aString |
1403 | 2162 |
"append a printed representation of the argument to the stream |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2163 |
and append a newline character. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2164 |
This makes streams somewhat compatible to TextCollectors and |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2165 |
allows you to say: |
2332 | 2166 |
Smalltalk at:#Transcript put:Stdout |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2167 |
or to use #show:/#showCR: with internal or external streams." |
1 | 2168 |
|
2169 |
self show:aString. |
|
2170 |
self cr |
|
1403 | 2171 |
|
1414 | 2172 |
"Created: 18.5.1996 / 15:34:17 / cg" |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2173 |
"Modified: 11.7.1996 / 10:01:27 / cg" |
1414 | 2174 |
! |
2175 |
||
2176 |
showCr:aString |
|
2177 |
"append a printed representation of the argument to the stream |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2178 |
and append a newline character. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2179 |
This is obsolete ST/X backward compatibility; use #showCR:" |
1414 | 2180 |
|
5873 | 2181 |
<resource:#obsolete> |
2182 |
||
1414 | 2183 |
self obsoleteMethodWarning:'use #showCR:'. |
2184 |
self showCR:aString. |
|
2185 |
||
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2186 |
"Modified: 11.7.1996 / 10:01:50 / cg" |
62 | 2187 |
! |
2188 |
||
2189 |
space |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2190 |
"append a space character to the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2191 |
This is only allowed, if the receiver supports writing." |
62 | 2192 |
|
2193 |
self nextPut:(Character space) |
|
1403 | 2194 |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2195 |
"Modified: 11.7.1996 / 10:02:06 / cg" |
62 | 2196 |
! |
2197 |
||
2198 |
spaces:count |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2199 |
"append count space-characters to the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2200 |
This is only allowed, if the receiver supports writing." |
62 | 2201 |
|
2202 |
self next:count put:(Character space) |
|
1403 | 2203 |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2204 |
"Modified: 11.7.1996 / 10:02:10 / cg" |
62 | 2205 |
! |
2206 |
||
611 | 2207 |
store:anObject |
2208 |
"append a printed representation of anObject to the receiver, |
|
1403 | 2209 |
from which the receiver can be reconstructed (i.e. its storeString). |
2210 |
Same as 'anObject storeOn:self'; Added for ST-80 compatibility." |
|
77 | 2211 |
|
611 | 2212 |
anObject storeOn:self |
1403 | 2213 |
|
2214 |
"Modified: 15.5.1996 / 18:05:55 / cg" |
|
77 | 2215 |
! |
2216 |
||
611 | 2217 |
tab |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2218 |
"append a tab-character to the stream. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2219 |
This is only allowed, if the receiver supports writing." |
77 | 2220 |
|
611 | 2221 |
self nextPut:(Character tab) |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2222 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2223 |
"Modified: 11.7.1996 / 10:02:20 / cg" |
2443 | 2224 |
! |
2225 |
||
2226 |
tab:count |
|
2227 |
"append count tab-characters to the receiver. |
|
2228 |
This is only allowed, if the receiver supports writing." |
|
2229 |
||
2230 |
self next:count put:(Character tab) |
|
2231 |
||
2232 |
"Modified: 11.7.1996 / 10:02:10 / cg" |
|
77 | 2233 |
! ! |
2234 |
||
1949 | 2235 |
!Stream class methodsFor:'documentation'! |
701 | 2236 |
|
2237 |
version |
|
6314 | 2238 |
^ '$Header: /cvs/stx/stx/libbasic/Stream.st,v 1.98 2001-12-13 19:00:23 cg Exp $' |
701 | 2239 |
! ! |
611 | 2240 |
Stream initialize! |