author | Claus Gittinger <cg@exept.de> |
Tue, 26 Sep 2000 12:36:28 +0200 | |
changeset 5628 | 1dc85c4c4b7c |
parent 5395 | 8766e18acdb5 |
child 5823 | bc3b00025476 |
permissions | -rw-r--r-- |
1 | 1 |
" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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||
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"{ 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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All Rights Reserved |
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This software is furnished under a license and may be used |
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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 |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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! |
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||
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documentation |
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" |
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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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[instance variables:] |
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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
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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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|
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initialize |
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ChunkSeparator := $!!. |
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StreamErrorSignal isNil ifTrue:[ |
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StreamErrorSignal := ErrorSignal newSignalMayProceed:false. |
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StreamErrorSignal nameClass:self message:#streamErrorSignal. |
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StreamErrorSignal notifierString:'Stream error'. |
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PositionErrorSignal := StreamErrorSignal newSignalMayProceed:true. |
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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'. |
970
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ST80 compatibility: generate signal at end of stream when instance variable
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110 |
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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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|
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LineTooLongErrorSignal := QuerySignal new. |
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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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] |
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126 |
"Modified: / 15.10.1998 / 12:11:45 / cg" |
3911 | 127 |
"Modified: / 1.11.1998 / 15:57:37 / stefan" |
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128 |
! ! |
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129 |
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1949 | 130 |
!Stream class methodsFor:'instance creation'! |
611 | 131 |
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132 |
new |
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133 |
"{ Pragma: +optSpace }" |
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134 |
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611 | 135 |
"report an error - Streams are created using on:-messages" |
136 |
||
4530
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error: vs. error:mayProceed:
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137 |
self error:'Streams cannot be created with new' |
611 | 138 |
! ! |
139 |
||
1949 | 140 |
!Stream class methodsFor:'Signal constants'! |
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141 |
|
970
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
846
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|
142 |
endOfStreamSignal |
3b59c9b38dbb
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143 |
"return the signal raised if read past end of stream is attemted" |
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144 |
|
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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|
145 |
^ EndOfStreamSignal |
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146 |
! |
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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parents:
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|
147 |
|
3877
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148 |
lineTooLongErrorSignal |
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149 |
"return the signal raised if a line is read which is too long (>32k)" |
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150 |
|
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151 |
^ LineTooLongErrorSignal |
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152 |
|
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153 |
"Created: / 15.10.1998 / 12:11:14 / cg" |
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154 |
! |
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155 |
|
611 | 156 |
positionErrorSignal |
157 |
"return the signal raised if positioning is requested for |
|
158 |
a stream which does not support that kind of operation" |
|
159 |
||
160 |
^ PositionErrorSignal |
|
161 |
! |
|
162 |
||
820
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163 |
readErrorSignal |
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164 |
"return the signal raised on read errors" |
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165 |
|
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166 |
^ ReadErrorSignal |
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167 |
! |
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168 |
|
593
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169 |
streamErrorSignal |
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170 |
"return the parent of all stream errors; |
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171 |
handling this one also handles all other errors. |
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172 |
Also, this one may be raised for errors not related to read/write |
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173 |
operations, such as failed ioctls in externalStream etc." |
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530
diff
changeset
|
174 |
|
19d568779cf7
moved StreamErrorSignal into Stream;
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|
175 |
^ StreamErrorSignal |
820
6d934f5d6cbc
moved readErrorSignal / writeErrorSignal up in the hierarchy
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diff
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|
176 |
! |
6d934f5d6cbc
moved readErrorSignal / writeErrorSignal up in the hierarchy
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|
177 |
|
6d934f5d6cbc
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|
178 |
writeErrorSignal |
6d934f5d6cbc
moved readErrorSignal / writeErrorSignal up in the hierarchy
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|
179 |
"return the signal raised on write errors" |
6d934f5d6cbc
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|
180 |
|
6d934f5d6cbc
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diff
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|
181 |
^ WriteErrorSignal |
1 | 182 |
! ! |
183 |
||
5392
deafa504029a
moved chunkSeparator from PositionableStream
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diff
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|
184 |
!Stream class methodsFor:'constants'! |
deafa504029a
moved chunkSeparator from PositionableStream
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diff
changeset
|
185 |
|
deafa504029a
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diff
changeset
|
186 |
chunkSeparator |
deafa504029a
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|
187 |
"return the chunk-separation character" |
deafa504029a
moved chunkSeparator from PositionableStream
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diff
changeset
|
188 |
|
deafa504029a
moved chunkSeparator from PositionableStream
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diff
changeset
|
189 |
^ ChunkSeparator |
deafa504029a
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diff
changeset
|
190 |
! ! |
deafa504029a
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diff
changeset
|
191 |
|
1 | 192 |
!Stream methodsFor:'accessing'! |
193 |
||
194 |
contents |
|
62 | 195 |
"return the entire contents of the stream |
1402
82462d153a7d
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diff
changeset
|
196 |
- we do not know here how to do it, it must be redefined in subclasses." |
1 | 197 |
|
198 |
^ self subclassResponsibility |
|
1402
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
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diff
changeset
|
199 |
|
82462d153a7d
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1401
diff
changeset
|
200 |
"Modified: 15.5.1996 / 17:36:29 / cg" |
970
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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846
diff
changeset
|
201 |
! |
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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diff
changeset
|
202 |
|
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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diff
changeset
|
203 |
signalAtEnd |
3105 | 204 |
"return the signalAtEnd flag setting. |
205 |
If true, reading past the end will always raise an EndOfStream exception. |
|
206 |
If false, no exception is raised and nil is returned from all reading messages. |
|
207 |
If nil (default), the exception is raised if there is a handler; otherwise, nil is returned. |
|
208 |
The default is nil (for ST80 compatibility) i.e. to only raise a signal if there is a handler." |
|
970
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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846
diff
changeset
|
209 |
|
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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diff
changeset
|
210 |
^ signalAtEnd |
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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846
diff
changeset
|
211 |
|
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
846
diff
changeset
|
212 |
"Created: 5.2.1996 / 18:24:53 / stefan" |
1402
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
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1401
diff
changeset
|
213 |
"Modified: 15.5.1996 / 17:35:55 / cg" |
970
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
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parents:
846
diff
changeset
|
214 |
! |
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
846
diff
changeset
|
215 |
|
1402
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
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1401
diff
changeset
|
216 |
signalAtEnd:aBoolean |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
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parents:
1401
diff
changeset
|
217 |
"set the signalAtEnd flag setting. If true, reading past the end |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
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1401
diff
changeset
|
218 |
will raise an EndOfStream exception. If false, no exception is |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
219 |
raised and nil is returned from all reading messages. |
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
220 |
The default is to raise a signal, but return nil if |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
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3586
diff
changeset
|
221 |
not handled." |
970
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
846
diff
changeset
|
222 |
|
1402
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
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parents:
1401
diff
changeset
|
223 |
signalAtEnd := aBoolean. |
970
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
846
diff
changeset
|
224 |
|
3591 | 225 |
"default behavior: return nil if unhandled ... |
226 |
|s| |
|
227 |
||
228 |
s := '12' readStream. |
|
229 |
Transcript showCR:s next. |
|
230 |
Transcript showCR:s next. |
|
231 |
Transcript showCR:s next. |
|
232 |
Transcript showCR:s next. |
|
233 |
" |
|
234 |
||
235 |
"... raise error if handled. |
|
236 |
|s| |
|
237 |
||
238 |
s := '12' readStream. |
|
239 |
Stream endOfStreamSignal handle:[:ex | |
|
240 |
Transcript showCR:'end reached'. |
|
241 |
ex return |
|
242 |
] do:[ |
|
243 |
Transcript showCR:s next. |
|
244 |
Transcript showCR:s next. |
|
245 |
Transcript showCR:s next. |
|
246 |
Transcript showCR:s next. |
|
247 |
] |
|
248 |
" |
|
249 |
||
250 |
"force raise (useful for debugging): |
|
251 |
|s| |
|
252 |
||
253 |
s := '12' readStream. |
|
254 |
s signalAtEnd:true. |
|
255 |
Transcript showCR:s next. |
|
256 |
Transcript showCR:s next. |
|
257 |
Transcript showCR:s next. |
|
258 |
Transcript showCR:s next. |
|
259 |
" |
|
260 |
||
261 |
||
262 |
"force no-raise (useful for compatibility with other systems): |
|
263 |
|s| |
|
264 |
||
265 |
s := '12' readStream. |
|
266 |
s signalAtEnd:false. |
|
267 |
Stream endOfStreamSignal handle:[:ex | |
|
268 |
Transcript showCR:'end reached'. |
|
269 |
ex return |
|
270 |
] do:[ |
|
271 |
Transcript showCR:s next. |
|
272 |
Transcript showCR:s next. |
|
273 |
Transcript showCR:s next. |
|
274 |
Transcript showCR:s next. |
|
275 |
] |
|
276 |
" |
|
277 |
||
278 |
"Modified: / 16.6.1998 / 16:04:41 / cg" |
|
1 | 279 |
! ! |
280 |
||
611 | 281 |
!Stream methodsFor:'closing'! |
282 |
||
283 |
close |
|
284 |
"close the stream - nothing done here. |
|
285 |
Added for compatibility with external streams." |
|
286 |
||
287 |
^ self |
|
288 |
! ! |
|
289 |
||
1401 | 290 |
!Stream methodsFor:'emphasis'! |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
291 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
292 |
bold |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
293 |
"set emphasis to #bold. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
294 |
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
|
295 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
296 |
self emphasis:#bold. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
297 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
298 |
"Created: 14.5.1996 / 17:37:37 / cg" |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
299 |
"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
|
300 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
301 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
302 |
boldItalic |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
303 |
"set emphasis to #boldItalic |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
304 |
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
|
305 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
306 |
self emphasis:#(bold italic). |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
307 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
308 |
"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
|
309 |
"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
|
310 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
311 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
312 |
emphasis |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
313 |
"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
|
314 |
text streams" |
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 |
^ nil |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
317 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
318 |
"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
|
319 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
320 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
321 |
emphasis:anEmphasis |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
322 |
"ignored here. |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
323 |
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
|
324 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
325 |
^ self |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
326 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
327 |
"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
|
328 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
329 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
330 |
italic |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
331 |
"set emphasis to #italic. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
332 |
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
|
333 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
334 |
self emphasis:#italic. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
335 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
336 |
"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
|
337 |
"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
|
338 |
! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
339 |
|
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
340 |
normal |
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
341 |
"set emphasis to #normal. |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
342 |
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
|
343 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
344 |
self emphasis:nil |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
345 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
346 |
"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
|
347 |
"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
|
348 |
! |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
349 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
350 |
strikeout |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
351 |
"set emphasis to #strikeout. |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
352 |
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
|
353 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
354 |
self emphasis:#strikeout. |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
355 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
356 |
"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
|
357 |
"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
|
358 |
! |
1398
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
359 |
|
1448
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
360 |
underline |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
361 |
"set emphasis to #underline. |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
362 |
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
|
363 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
364 |
self emphasis:#underline. |
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
365 |
|
0d59ce5c4915
reduce all emphasis change messages to single #emphasis:
Claus Gittinger <cg@exept.de>
parents:
1447
diff
changeset
|
366 |
"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
|
367 |
"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
|
368 |
! ! |
6c594289c589
emphasis stuff moved up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1371
diff
changeset
|
369 |
|
1401 | 370 |
!Stream methodsFor:'enumerating'! |
371 |
||
372 |
do:aBlock |
|
373 |
"evaluate the argument, aBlock for all remaining elements, |
|
374 |
up to the end of the stream" |
|
375 |
||
376 |
[self atEnd] whileFalse:[ |
|
377 |
aBlock value:(self next) |
|
378 |
] |
|
379 |
||
380 |
" |
|
381 |
|s| |
|
382 |
s := ReadStream on:#(1 2 3 4 5 6 7 8 9). |
|
383 |
s next. |
|
384 |
s next. |
|
1422 | 385 |
s do:[:element | Transcript showCR:element] |
1401 | 386 |
" |
387 |
! ! |
|
388 |
||
389 |
!Stream methodsFor:'error handling'! |
|
390 |
||
391 |
pastEnd |
|
392 |
"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
|
393 |
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
|
394 |
Otherwise raise the signal, but only if handled; otherwise return nil." |
1401 | 395 |
|
396 |
signalAtEnd == true ifTrue:[ |
|
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
397 |
"/ always raise ... |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
398 |
^ EndOfStreamSignal raiseRequestFrom:self |
3104
4b817b05cde0
vw compatible readPastEnd: only raise the signal if its handled;
Claus Gittinger <cg@exept.de>
parents:
3084
diff
changeset
|
399 |
]. |
4b817b05cde0
vw compatible readPastEnd: only raise the signal if its handled;
Claus Gittinger <cg@exept.de>
parents:
3084
diff
changeset
|
400 |
signalAtEnd == false ifTrue:[ |
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
401 |
"/ never raise ... |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
402 |
^ nil |
1401 | 403 |
]. |
404 |
||
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
405 |
"/ 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
|
406 |
Signal noHandlerSignal handle:[:ex | |
3591 | 407 |
ex return |
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
408 |
] do:[ |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
409 |
^ EndOfStreamSignal raiseRequestFrom:self |
3591 | 410 |
]. |
411 |
^ nil. |
|
412 |
||
413 |
"default behavior: return nil if unhandled ... |
|
414 |
|s| |
|
415 |
||
416 |
s := '12' readStream. |
|
417 |
Transcript showCR:s next. |
|
418 |
Transcript showCR:s next. |
|
419 |
Transcript showCR:s next. |
|
420 |
Transcript showCR:s next. |
|
421 |
" |
|
422 |
||
423 |
"... raise error if handled. |
|
424 |
|s| |
|
425 |
||
426 |
s := '12' readStream. |
|
427 |
Stream endOfStreamSignal handle:[:ex | |
|
428 |
Transcript showCR:'end reached'. |
|
429 |
ex return |
|
430 |
] do:[ |
|
431 |
Transcript showCR:s next. |
|
432 |
Transcript showCR:s next. |
|
433 |
Transcript showCR:s next. |
|
434 |
Transcript showCR:s next. |
|
435 |
] |
|
436 |
" |
|
3104
4b817b05cde0
vw compatible readPastEnd: only raise the signal if its handled;
Claus Gittinger <cg@exept.de>
parents:
3084
diff
changeset
|
437 |
|
3591 | 438 |
"force raise (useful for debugging): |
439 |
|s| |
|
440 |
||
441 |
s := '12' readStream. |
|
442 |
s signalAtEnd:true. |
|
443 |
Transcript showCR:s next. |
|
444 |
Transcript showCR:s next. |
|
445 |
Transcript showCR:s next. |
|
446 |
Transcript showCR:s next. |
|
447 |
" |
|
448 |
||
449 |
||
450 |
"force no-raise (useful for compatibility with other systems): |
|
451 |
|s| |
|
452 |
||
453 |
s := '12' readStream. |
|
454 |
s signalAtEnd:false. |
|
455 |
Stream endOfStreamSignal handle:[:ex | |
|
456 |
Transcript showCR:'end reached'. |
|
457 |
ex return |
|
458 |
] do:[ |
|
459 |
Transcript showCR:s next. |
|
460 |
Transcript showCR:s next. |
|
461 |
Transcript showCR:s next. |
|
462 |
Transcript showCR:s next. |
|
463 |
] |
|
464 |
" |
|
465 |
||
466 |
"Modified: / 16.6.1998 / 16:04:13 / cg" |
|
1401 | 467 |
! ! |
468 |
||
611 | 469 |
!Stream methodsFor:'misc'! |
470 |
||
471 |
binary |
|
1402
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
472 |
"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
|
473 |
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
|
474 |
byte-valued integers respectively. |
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
475 |
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
|
476 |
with externalStreams." |
611 | 477 |
|
1402
82462d153a7d
added #nextAlphaNumericWord (completing the protocol); added comments
Claus Gittinger <cg@exept.de>
parents:
1401
diff
changeset
|
478 |
"Modified: 15.5.1996 / 17:38:36 / cg" |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
479 |
! |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
480 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
481 |
text |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
482 |
"switch to text mode. |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
483 |
Ignored here, but added to make internalStreams protocol compatible |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
484 |
with externalStreams." |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
485 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
486 |
"Modified: 15.5.1996 / 17:38:36 / cg" |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
487 |
"Created: 13.9.1996 / 18:33:26 / cg" |
611 | 488 |
! ! |
489 |
||
490 |
!Stream methodsFor:'non homogenous reading'! |
|
491 |
||
2714 | 492 |
nextBytes:count |
5072
e3718d979b80
nextBytes: returns bytes and not a string.
Stefan Vogel <sv@exept.de>
parents:
4810
diff
changeset
|
493 |
"read the next count bytes and return it either as a byteArray. |
2714 | 494 |
If EOF is encountered while reading, a truncated byteArry or short string |
495 |
is returned. If EOF is already reached before the first byte can be read, |
|
496 |
nil is returned." |
|
497 |
||
498 |
|data n| |
|
499 |
||
5072
e3718d979b80
nextBytes: returns bytes and not a string.
Stefan Vogel <sv@exept.de>
parents:
4810
diff
changeset
|
500 |
data := ByteArray new:count. |
2714 | 501 |
n := self nextBytes:count into:data startingAt:1. |
502 |
n ~~ count ifTrue:[ |
|
3346 | 503 |
n == 0 ifTrue:[ |
504 |
^ nil |
|
505 |
]. |
|
506 |
data := data copyTo:n |
|
2714 | 507 |
]. |
508 |
||
509 |
^ data |
|
510 |
||
3346 | 511 |
"Created: / 21.6.1997 / 11:18:57 / cg" |
512 |
"Modified: / 30.3.1998 / 18:04:58 / cg" |
|
2714 | 513 |
! |
514 |
||
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
515 |
nextBytes:count into:anObject |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
516 |
"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
|
517 |
bytes read. On EOF, 0 is returned. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
518 |
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
|
519 |
is raised if the connection is broken. |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
520 |
|
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
521 |
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
|
522 |
a ByteArray, String, Float- or DoubleArray). |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
523 |
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
|
524 |
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
|
525 |
|
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
526 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
527 |
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
|
528 |
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
|
529 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
530 |
^ self nextBytes:count into:anObject startingAt:1 |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
531 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
532 |
"Modified: 22.4.1997 / 10:41:39 / cg" |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
533 |
! |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
534 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
535 |
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
|
536 |
"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
|
537 |
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
|
538 |
collection. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
539 |
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
|
540 |
The receiver must support reading of binary bytes. |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
541 |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
542 |
Notice: this method is privided here for protocol completeness |
3154 | 543 |
with externalStreams - it is normally not used with other |
544 |
streams." |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
545 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
546 |
|n "{Class: SmallInteger }" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
547 |
dstIndex| |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
548 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
549 |
dstIndex := initialIndex. |
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
550 |
n := 0. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
551 |
[self atEnd] whileFalse:[ |
3154 | 552 |
n == numBytes ifTrue:[ |
553 |
^ n |
|
554 |
]. |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
555 |
|
3154 | 556 |
aCollection byteAt:dstIndex put:(self nextByte). |
557 |
dstIndex := dstIndex + 1. |
|
558 |
n := n + 1. |
|
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
559 |
]. |
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
560 |
^ n |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
561 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
562 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
563 |
|s n buffer| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
564 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
565 |
buffer := ByteArray new:10. |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
566 |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
567 |
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
|
568 |
s next:3. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
569 |
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
|
570 |
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
|
571 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
572 |
|
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
573 |
"Modified: 22.4.1997 / 10:43:08 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
574 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
575 |
|
2587 | 576 |
nextBytes:numBytes into:aCollection startingAt:initialIndex blockSize:blockSize |
577 |
"like nextBytes:into:startingAt:, but read in blocks of the given size. |
|
578 |
This leads to better beahvior when reading large chunks from a slow device, |
|
579 |
such as a cdrom drive (since a single unix-read is not interruptable)." |
|
580 |
||
581 |
|nR oR n| |
|
582 |
||
583 |
nR := numBytes. |
|
584 |
oR := initialIndex. |
|
585 |
[nR > 0] whileTrue:[ |
|
3154 | 586 |
n := nR. |
587 |
n > blockSize ifTrue:[n := blockSize]. |
|
588 |
n := self nextBytes:n into:aCollection startingAt:oR. |
|
589 |
n == 0 ifTrue:[ |
|
590 |
^ numBytes - nR |
|
591 |
]. |
|
592 |
oR := oR + n. |
|
593 |
nR := nR - n |
|
2587 | 594 |
]. |
595 |
^ numBytes |
|
596 |
||
597 |
"Created: 24.4.1997 / 21:09:34 / cg" |
|
598 |
"Modified: 24.4.1997 / 21:19:50 / cg" |
|
599 |
! |
|
600 |
||
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
601 |
nextBytesInto:anObject |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
602 |
"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
|
603 |
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
|
604 |
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
|
605 |
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
|
606 |
is raised if the connection is broken. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
607 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
608 |
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
|
609 |
(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
|
610 |
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
|
611 |
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
|
612 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
613 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
614 |
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
|
615 |
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
|
616 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
617 |
^ self nextBytes:(anObject byteSize) into:anObject startingAt:1 |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
618 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
619 |
" to read 100 bytes from a stream: |
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 |
|b aStream| |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
622 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
623 |
aStream := 'smalltalk.rc' asFilename readStream. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
624 |
b := ByteArray new:100. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
625 |
aStream nextBytesInto:b. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
626 |
aStream close. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
627 |
b inspect |
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 |
|
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 |
|s aStream| |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
632 |
aStream := 'smalltalk.rc' asFilename readStream. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
633 |
s := String new:100. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
634 |
aStream nextBytesInto:s. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
635 |
aStream close. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
636 |
s inspect |
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 |
"Modified: 22.4.1997 / 10:42:02 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
640 |
"Created: 22.4.1997 / 10:42:26 / cg" |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
641 |
! |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1548
diff
changeset
|
642 |
|
611 | 643 |
nextLongMSB:msbFlag |
644 |
"return a signed long (4 bytes) from the stream. |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
645 |
The receiver must support reading of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
646 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
647 |
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
|
648 |
most-significant-byte-first (true) or least-first (false). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
649 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
650 |
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
|
651 |
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
|
652 |
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
|
653 |
network byte order." |
611 | 654 |
|
3184
d99302322139
Ok, #upToAll: positions after the collection.
Stefan Vogel <sv@exept.de>
parents:
3176
diff
changeset
|
655 |
|uval "{ Class: SmallInteger }" val| |
611 | 656 |
|
657 |
msbFlag ifTrue:[ |
|
2332 | 658 |
"most significant first" |
3176 | 659 |
uval := self next. |
660 |
uval := (uval bitShift:8) bitOr:self next. |
|
661 |
uval := (uval bitShift:8) bitOr:self next. |
|
662 |
val := (uval bitShift:8) bitOr:self next. |
|
611 | 663 |
] ifFalse:[ |
2332 | 664 |
"least significant first" |
665 |
uval := self next. |
|
666 |
uval := uval bitOr:(self next bitShift:8). |
|
667 |
uval := uval bitOr:(self next bitShift:16). |
|
3176 | 668 |
val := uval bitOr:(self next bitShift:24). |
611 | 669 |
]. |
670 |
"change from unsigned 0..FFFFFFFF to signed -80000000..7FFFFFFF" |
|
671 |
||
3176 | 672 |
val >= 16r80000000 ifTrue:[ |
673 |
^ val - 16r100000000 |
|
674 |
]. |
|
675 |
^ val |
|
676 |
||
677 |
" |
|
678 |
|bytes s| |
|
679 |
||
680 |
bytes := #[16rFF 16rFF 16rFF 16rFF]. |
|
681 |
s := bytes readStream. |
|
682 |
Transcript showCR:(s nextLongMSB:true). |
|
683 |
s reset. |
|
684 |
Transcript showCR:(s nextLongMSB:false). |
|
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
685 |
|
3176 | 686 |
bytes := #[16r12 16r34 16r56 16r78]. |
687 |
s := bytes readStream. |
|
688 |
Transcript showCR:(s nextLongMSB:true). |
|
689 |
s reset. |
|
690 |
Transcript showCR:(s nextLongMSB:false). |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
691 |
|
3176 | 692 |
bytes := #[16r89 16rab 16rcd 16ref]. |
693 |
s := bytes readStream. |
|
694 |
Transcript showCR:(s nextLongMSB:true). |
|
695 |
s reset. |
|
696 |
Transcript showCR:(s nextLongMSB:false). |
|
697 |
" |
|
698 |
||
699 |
"Modified: / 14.1.1998 / 15:40:41 / cg" |
|
611 | 700 |
! |
701 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
702 |
nextLongNet |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
703 |
"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
|
704 |
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
|
705 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
706 |
^ self nextLongMSB:(Socket networkLongOrderIsMSB) |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
707 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
708 |
"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
|
709 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
710 |
|
611 | 711 |
nextNumber:n |
712 |
"Return the next n bytes as a positive Integer; bytes are taken msb-first." |
|
713 |
||
714 |
|s |
|
715 |
val "{ Class: SmallInteger }" |
|
716 |
rep "{ Class: SmallInteger }"| |
|
717 |
||
718 |
"claus: this method is central in binaryStorage - |
|
719 |
therefore it has been tuned a bit (and needs even more tuning)" |
|
720 |
||
721 |
n == 1 ifTrue:[ |
|
722 |
^ self next |
|
723 |
]. |
|
724 |
n == 2 ifTrue:[ |
|
725 |
val := self next. |
|
726 |
val := (val bitShift:8) + self next. |
|
727 |
^ val |
|
728 |
]. |
|
729 |
n == 3 ifTrue:[ |
|
730 |
val := self next. |
|
731 |
val := (val bitShift:8) + self next. |
|
732 |
val := (val bitShift:8) + self next. |
|
733 |
^ val |
|
734 |
]. |
|
735 |
n == 4 ifTrue:[ |
|
736 |
val := self next. |
|
737 |
val <= 16r3F ifTrue:[ |
|
738 |
val := (val bitShift:8) + self next. |
|
739 |
val := (val bitShift:8) + self next. |
|
740 |
val := (val bitShift:8) + self next. |
|
741 |
^ val |
|
742 |
]. |
|
743 |
"sorry, but need a largeInteger" |
|
3176 | 744 |
val := (val bitShift:8) + self next. |
611 | 745 |
s := (val bitShift:8) + self next. |
746 |
s := (s * 256) + self next. |
|
747 |
^ s |
|
748 |
]. |
|
749 |
||
750 |
" |
|
751 |
arbitrary long |
|
752 |
" |
|
753 |
s := 0. |
|
754 |
rep := n. |
|
755 |
rep timesRepeat:[ |
|
756 |
s := s * 256 + self next |
|
757 |
]. |
|
758 |
^ s truncated |
|
759 |
! |
|
760 |
||
761 |
nextShortMSB:msbFlag |
|
762 |
"return a signed short (2 bytes) from the stream. |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
763 |
The receiver must support reading of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
764 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
765 |
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
|
766 |
most-significant-byte-first (true) or least-first (false). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
767 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
768 |
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
|
769 |
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
|
770 |
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
|
771 |
network byte order." |
611 | 772 |
|
773 |
|uval "{ Class: SmallInteger }"| |
|
774 |
||
775 |
msbFlag ifTrue:[ |
|
2332 | 776 |
"most significant first" |
777 |
uval := self next bitShift:8. |
|
778 |
uval := uval bitOr:(self next). |
|
611 | 779 |
] ifFalse:[ |
2332 | 780 |
"least significant first" |
781 |
uval := self next. |
|
782 |
uval := uval bitOr:(self next bitShift:8). |
|
611 | 783 |
]. |
784 |
"change from unsigned 0..FFFF to signed -8000..7FFF" |
|
785 |
uval >= 16r8000 ifTrue:[ |
|
2332 | 786 |
^ uval - 16r10000 |
611 | 787 |
]. |
788 |
^ uval |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
789 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
790 |
"Modified: 11.7.1996 / 10:07:04 / cg" |
611 | 791 |
! |
792 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
793 |
nextShortNet |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
794 |
"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
|
795 |
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
|
796 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
797 |
^ self nextShortMSB:(Socket networkShortOrderIsMSB) |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
798 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
799 |
"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
|
800 |
"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
|
801 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
802 |
|
4588 | 803 |
nextSignedByte |
804 |
"return a signed byte (-128..127) from the stream. |
|
805 |
The receiver must support reading of binary bytes." |
|
806 |
||
807 |
|uval "{ Class: SmallInteger }"| |
|
808 |
||
809 |
uval := self next. |
|
810 |
"change from unsigned 0..FF to signed -80..7F" |
|
811 |
uval >= 16r80 ifTrue:[ |
|
812 |
^ uval - 16r100 |
|
813 |
]. |
|
814 |
^ uval |
|
815 |
||
816 |
" |
|
817 |
#[16rFF 16r80 16r7F 16r01] readStream nextSignedByte |
|
818 |
" |
|
819 |
! |
|
820 |
||
611 | 821 |
nextUnsignedLongMSB:msbFlag |
822 |
"return an unsigned long (4 bytes) from the stream. |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
823 |
The receiver must support reading of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
824 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
825 |
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
|
826 |
most-significant-byte-first (true) or least-first (false). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
827 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
828 |
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
|
829 |
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
|
830 |
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
|
831 |
network byte order." |
611 | 832 |
|
833 |
|val| |
|
834 |
||
835 |
msbFlag ifTrue:[ |
|
2332 | 836 |
val := self next. |
837 |
val := (val bitShift:8) bitOr:(self next). |
|
838 |
val := (val bitShift:8) bitOr:(self next). |
|
839 |
val := (val * 256) + (self next). |
|
840 |
^ val |
|
611 | 841 |
]. |
842 |
val := self next. |
|
843 |
^ (val bitShift:24) |
|
844 |
+ (self next bitShift:16) |
|
845 |
+ (self next bitShift:8) |
|
846 |
+ self next |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
847 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
848 |
"Modified: 11.7.1996 / 10:07:13 / cg" |
611 | 849 |
! |
850 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
851 |
nextUnsignedLongNet |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
852 |
"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
|
853 |
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
|
854 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
855 |
^ self nextUnsignedLongMSB:(Socket networkLongOrderIsMSB) |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
856 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
857 |
"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
|
858 |
"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
|
859 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
860 |
|
611 | 861 |
nextUnsignedShortMSB:msbFlag |
862 |
"return an unsigned short (2 bytes) from the stream. |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
863 |
The receiver must support reading of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
864 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
865 |
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
|
866 |
most-significant-byte-first (true) or least-first (false). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
867 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
868 |
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
|
869 |
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
|
870 |
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
|
871 |
network byte order." |
611 | 872 |
|
873 |
msbFlag ifTrue:[ |
|
2332 | 874 |
^ (self next bitShift:8) bitOr:(self next) |
611 | 875 |
]. |
876 |
^ (self next) bitOr:(self next bitShift:8) |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
877 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
878 |
"Modified: 11.7.1996 / 10:07:20 / cg" |
611 | 879 |
! |
880 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
881 |
nextUnsignedShortNet |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
882 |
"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
|
883 |
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
|
884 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
885 |
^ self nextUnsignedShortMSB:(Socket networkShortOrderIsMSB) |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
886 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
887 |
"Created: 10.1.1996 / 19:50:02 / cg" |
611 | 888 |
! ! |
889 |
||
890 |
!Stream methodsFor:'non homogenous writing'! |
|
891 |
||
892 |
nextLongPut:aNumber |
|
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
893 |
"for ST-80 compatibility: |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
894 |
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
|
895 |
The most significant byte is sent first." |
611 | 896 |
|
897 |
^ self nextPutLong:aNumber MSB:true |
|
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
898 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
899 |
"Modified: 10.1.1996 / 19:38:54 / cg" |
611 | 900 |
! |
901 |
||
902 |
nextNumber:n put:v |
|
903 |
"Append to the receiver the argument, v, which is a positive Integer, |
|
904 |
as the next n bytes. Bytes are written msb first. |
|
905 |
Possibly pad with leading zeros. |
|
906 |
The receiver must support writing of binary bytes." |
|
907 |
||
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
908 |
|vlen "{ Class: SmallInteger }" |
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
909 |
i "{ Class: SmallInteger }"| |
611 | 910 |
|
911 |
"claus: this method is central in binaryStorage - |
|
912 |
therefore it has been tuned a bit (and needs even more tuning)" |
|
913 |
||
914 |
v class == SmallInteger ifTrue:[ "- this is a hint to stc" |
|
915 |
n == 1 ifTrue:[ |
|
916 |
(v between:0 and:16rFF) ifTrue:[ |
|
917 |
self nextPut:v. |
|
918 |
^ self |
|
919 |
]. |
|
920 |
]. |
|
921 |
n == 2 ifTrue:[ |
|
922 |
(v between:0 and:16rFFFF) ifTrue:[ |
|
2332 | 923 |
self nextPut:(v bitShift:-8); nextPut:(v bitAnd:16rFF). |
611 | 924 |
^ self |
925 |
]. |
|
926 |
]. |
|
927 |
n == 3 ifTrue:[ |
|
928 |
(v between:0 and:16rFFFFFF) ifTrue:[ |
|
929 |
self nextPut:((v bitShift:-16) bitAnd:16rFF). |
|
930 |
self nextPut:((v bitShift:-8) bitAnd:16rFF). |
|
931 |
self nextPut:(v bitAnd:16rFF). |
|
932 |
^ self |
|
933 |
]. |
|
934 |
]. |
|
935 |
n == 4 ifTrue:[ |
|
936 |
(v >= 0) ifTrue:[ |
|
937 |
self nextPut:((v bitShift:-24) bitAnd:16rFF). |
|
938 |
self nextPut:((v bitShift:-16) bitAnd:16rFF). |
|
939 |
self nextPut:((v bitShift:-8) bitAnd:16rFF). |
|
940 |
self nextPut:(v bitAnd:16rFF). |
|
941 |
^ self |
|
942 |
]. |
|
943 |
]. |
|
944 |
]. |
|
945 |
||
946 |
" |
|
947 |
arbitrary long |
|
948 |
" |
|
949 |
n < (vlen := v digitLength) ifTrue: [ |
|
950 |
" |
|
951 |
the number is too big to be repesented in n bytes |
|
952 |
" |
|
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
953 |
self error:'number too big' |
611 | 954 |
]. |
955 |
||
956 |
"pad with leading zeros" |
|
957 |
i := n. |
|
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
958 |
[i > vlen] whileTrue:[ |
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
959 |
self nextPut:0. |
611 | 960 |
i := i - 1 |
961 |
]. |
|
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
962 |
|
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
963 |
i == 1 ifTrue:[ |
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
964 |
^ self nextPut:v |
611 | 965 |
]. |
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
966 |
|
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
967 |
[i > 0] whileTrue:[ |
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
968 |
self nextPut:(v digitAt:i). |
611 | 969 |
i := i - 1 |
970 |
] |
|
971 |
! |
|
972 |
||
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
973 |
nextPutByte:aByteValue |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
974 |
"write a byte. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
975 |
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
|
976 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
977 |
self nextPut:aByteValue |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
978 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
979 |
"Modified: 22.4.1997 / 09:05:26 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
980 |
"Created: 22.4.1997 / 10:43:55 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
981 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
982 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
983 |
nextPutBytes:count from:anObject |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
984 |
"write count bytes from an object. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
985 |
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
|
986 |
The object must have non-pointer indexed instvars |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
987 |
(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
|
988 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
989 |
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
|
990 |
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
|
991 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
992 |
^ self nextPutBytes:count from:anObject startingAt:1 |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
993 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
994 |
"Created: 22.4.1997 / 10:43:59 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
995 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
996 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
997 |
nextPutBytes:count from:anObject startingAt:start |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
998 |
"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
|
999 |
Return the number of bytes written. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1000 |
The object must have non-pointer indexed instvars |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1001 |
(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
|
1002 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1003 |
This is provided for compatibility with externalStream; |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1004 |
to support binary storage" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1005 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1006 |
|idx| |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1007 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1008 |
idx := start. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1009 |
1 to:count do:[:i | |
3154 | 1010 |
self nextPutByte:(anObject byteAt:idx). |
1011 |
idx := idx + 1 |
|
2576
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1012 |
]. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1013 |
^ count |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1014 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1015 |
"Created: 22.4.1997 / 10:44:09 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1016 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1017 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1018 |
nextPutBytesFrom:anObject |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1019 |
"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
|
1020 |
the objects size. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1021 |
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
|
1022 |
The object must have non-pointer indexed instvars |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1023 |
(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
|
1024 |
Use with care - non object oriented i/o. |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1025 |
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
|
1026 |
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
|
1027 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1028 |
^ self nextPutBytes:(anObject size) from:anObject startingAt:1 |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1029 |
|
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1030 |
"Created: 22.4.1997 / 10:44:18 / cg" |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1031 |
! |
9985af974304
added non-homogenous read/write stuff;
Claus Gittinger <cg@exept.de>
parents:
2443
diff
changeset
|
1032 |
|
611 | 1033 |
nextPutLong:aNumber MSB:msbFlag |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1034 |
"Write the argument, aNumber as a long (four bytes). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1035 |
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
|
1036 |
otherwise least first. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1037 |
Returns the receiver on ok, nil on error. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1038 |
The receiver must support writing of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1039 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1040 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1041 |
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
|
1042 |
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
|
1043 |
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
|
1044 |
network byte order." |
611 | 1045 |
|
2332 | 1046 |
|hi lo w1 w2| |
1047 |
||
611 | 1048 |
msbFlag ifTrue:[ |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1049 |
"high word first" |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1050 |
self nextPut:(aNumber digitByteAt:4). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1051 |
self nextPut:(aNumber digitByteAt:3). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1052 |
self nextPut:(aNumber digitByteAt:2). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1053 |
self nextPut:(aNumber digitByteAt:1). |
2332 | 1054 |
] ifFalse:[ |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1055 |
"low word first" |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1056 |
self nextPut:(aNumber digitByteAt:1). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1057 |
self nextPut:(aNumber digitByteAt:2). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1058 |
self nextPut:(aNumber digitByteAt:3). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1059 |
self nextPut:(aNumber digitByteAt:4). |
611 | 1060 |
]. |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1061 |
^ self. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1062 |
|
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1063 |
"/ hi := (aNumber // 16r10000). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1064 |
"/ lo := (aNumber \\ 16r10000). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1065 |
"/ |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1066 |
"/ msbFlag ifTrue:[ |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1067 |
"/ "high word first" |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1068 |
"/ w1 := hi. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1069 |
"/ w2 := lo. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1070 |
"/ ] ifFalse:[ |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1071 |
"/ "low word first" |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1072 |
"/ w1 := lo. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1073 |
"/ w2 := hi. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1074 |
"/ ]. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1075 |
"/ self nextPutShort:w1 MSB:false; nextPutShort:w2 MSB:false. |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1076 |
|
3084 | 1077 |
"Modified: / 1.11.1997 / 18:30:52 / cg" |
611 | 1078 |
! |
1079 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1080 |
nextPutLongNet:aNumber |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1081 |
"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
|
1082 |
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
|
1083 |
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
|
1084 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1085 |
^ self nextPutLong:aNumber MSB:(Socket networkLongOrderIsMSB). |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1086 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1087 |
"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
|
1088 |
"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
|
1089 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1090 |
|
611 | 1091 |
nextPutShort:aNumber MSB:msbFlag |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1092 |
"Write the argument, aNumber as a short (two bytes). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1093 |
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
|
1094 |
otherwise least first. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1095 |
Returns the receiver on ok, nil on error. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1096 |
The receiver must support writing of binary bytes. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1097 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1098 |
This interface is provided to allow talking to external programs, |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1099 |
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
|
1100 |
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
|
1101 |
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
|
1102 |
network byte order." |
611 | 1103 |
|
2332 | 1104 |
|iNum "{ Class: SmallInteger }" hi lo b1 b2| |
1117
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
1105 |
|
f64e35e18e65
typed variable in nextPutNumber
Claus Gittinger <cg@exept.de>
parents:
970
diff
changeset
|
1106 |
iNum := aNumber. |
611 | 1107 |
msbFlag ifTrue:[ |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1108 |
"high word first" |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1109 |
self nextPut:(iNum digitByteAt:2). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1110 |
self nextPut:(iNum digitByteAt:1). |
2332 | 1111 |
] ifFalse:[ |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1112 |
"low word first" |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1113 |
self nextPut:(iNum digitByteAt:1). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1114 |
self nextPut:(iNum digitByteAt:2). |
611 | 1115 |
]. |
4624
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1116 |
^ self. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1117 |
|
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1118 |
"/ hi := (iNum bitShift:-8). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1119 |
"/ lo := (iNum bitAnd:16rFF). |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1120 |
"/ |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1121 |
"/ msbFlag ifTrue:[ |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1122 |
"/ "high byte first" |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1123 |
"/ b1 := hi. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1124 |
"/ b2 := lo. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1125 |
"/ ] ifFalse:[ |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1126 |
"/ "low byte first" |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1127 |
"/ b1 := lo. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1128 |
"/ b2 := hi. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1129 |
"/ ]. |
aa9aa64dd795
care for signed numbers in nextPutShort and nextPutLong
Claus Gittinger <cg@exept.de>
parents:
4588
diff
changeset
|
1130 |
"/ self nextPut:b1. self nextPut:b2. |
611 | 1131 |
! |
1132 |
||
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1133 |
nextPutShortNet:aNumber |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1134 |
"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
|
1135 |
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
|
1136 |
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
|
1137 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1138 |
^ self nextPutLong:aNumber MSB:(Socket networkShortOrderIsMSB). |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1139 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1140 |
"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
|
1141 |
! |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1142 |
|
611 | 1143 |
nextPutWord:aNumber |
1144 |
"write the argument, aNumber as a signed short (two bytes); |
|
1145 |
write msb-first for compatibility with other smalltalks. |
|
1146 |
The receiver must support writing of binary bytes. |
|
1147 |
I dont know if it should be named nextPutWord: or nextWordPut:; |
|
1148 |
one of them will vanish ..." |
|
1149 |
||
1150 |
^ self nextPutShort:aNumber MSB:true |
|
1151 |
! |
|
1152 |
||
1153 |
nextShortPut:aNumber MSB:msbFlag |
|
3084 | 1154 |
"for backward compatibility - this will vanish" |
611 | 1155 |
|
1156 |
^ self nextPutShort:aNumber MSB:msbFlag |
|
3084 | 1157 |
|
1158 |
"Modified: / 1.11.1997 / 18:31:05 / cg" |
|
611 | 1159 |
! |
1160 |
||
1161 |
nextWordPut:aNumber |
|
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1162 |
"for ST-80 compatibility: |
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1163 |
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
|
1164 |
The most significant byte is sent first." |
611 | 1165 |
|
1166 |
^ self nextPutShort:aNumber MSB:true |
|
846
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1167 |
|
4117b296633d
network byte order read/write methods added
Claus Gittinger <cg@exept.de>
parents:
820
diff
changeset
|
1168 |
"Modified: 10.1.1996 / 19:39:19 / cg" |
611 | 1169 |
! ! |
1170 |
||
1171 |
!Stream methodsFor:'private'! |
|
1172 |
||
1173 |
contentsSpecies |
|
1174 |
"this should return the class of which an instance is |
|
1403 | 1175 |
returned by the #contents method. Here, Array is returned, |
1176 |
since the abstract Stream-class has no idea of the underlying |
|
1177 |
collection class. |
|
1178 |
It is redefined in some subclasses - for example, to return String." |
|
611 | 1179 |
|
1180 |
^ Array |
|
1403 | 1181 |
|
1182 |
"Modified: 15.5.1996 / 17:53:31 / cg" |
|
611 | 1183 |
! ! |
1184 |
||
1185 |
!Stream methodsFor:'queries'! |
|
1186 |
||
1187 |
isBinary |
|
1403 | 1188 |
"return true, if in binary mode. Always returns false here, |
1189 |
to make internalStreams protocol compatible with externalStreams." |
|
611 | 1190 |
|
1191 |
^ false |
|
1403 | 1192 |
|
1193 |
"Modified: 15.5.1996 / 17:53:51 / cg" |
|
611 | 1194 |
! |
1195 |
||
1196 |
isPositionable |
|
1403 | 1197 |
"return true, if the stream supports positioning (some do not). |
1198 |
Since this is an abstract class, false is returned here - just to make certain." |
|
611 | 1199 |
|
1200 |
^ false |
|
1403 | 1201 |
|
1202 |
"Modified: 15.5.1996 / 17:54:16 / cg" |
|
611 | 1203 |
! |
1204 |
||
1447 | 1205 |
isPrinterStream |
1206 |
"return true, if this is a printerStream. |
|
1207 |
Since this is an abstract class, false is returned here." |
|
1208 |
||
1209 |
^ false |
|
1210 |
||
1211 |
"Modified: 15.5.1996 / 17:54:16 / cg" |
|
1212 |
"Created: 3.6.1996 / 12:05:35 / cg" |
|
1213 |
! |
|
1214 |
||
611 | 1215 |
isReadable |
1216 |
"return true, if reading is supported by the recevier. |
|
1403 | 1217 |
This has to be redefined in concrete subclasses." |
611 | 1218 |
|
1219 |
^ self subclassResponsibility |
|
1403 | 1220 |
|
1221 |
"Modified: 15.5.1996 / 17:54:31 / cg" |
|
611 | 1222 |
! |
1223 |
||
1224 |
isStream |
|
1403 | 1225 |
"return true, if the receiver is some kind of Stream. Always return true here." |
611 | 1226 |
|
1227 |
^ true |
|
1403 | 1228 |
|
1229 |
"Modified: 15.5.1996 / 17:54:48 / cg" |
|
611 | 1230 |
! |
1231 |
||
1232 |
isWritable |
|
1233 |
"return true, if writing is supported by the recevier. |
|
1403 | 1234 |
This has to be redefined in concrete subclasses." |
611 | 1235 |
|
1236 |
^ self subclassResponsibility |
|
1403 | 1237 |
|
1238 |
"Modified: 15.5.1996 / 17:54:54 / cg" |
|
611 | 1239 |
! |
1240 |
||
1241 |
lineLength |
|
1403 | 1242 |
"return the lineLength which `looks good' when pretty printed |
1243 |
text is sent to this stream. |
|
1244 |
This has NO meaning whatsoever to regular streams; |
|
1245 |
however, it may be used as a layout hint for prettyprinting functions |
|
1246 |
- for compatibility with TextCollectors, which returns its views actual |
|
1247 |
line length, and allows the prettyprinter to wrap at that position." |
|
611 | 1248 |
|
1249 |
^ 80 |
|
1403 | 1250 |
|
1251 |
"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
|
1252 |
! |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1253 |
|
5395 | 1254 |
lineNumber |
1255 |
"return the current lineNumber if known" |
|
1256 |
||
1257 |
^ nil |
|
1258 |
||
1259 |
||
1260 |
! |
|
1261 |
||
3493
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1262 |
pageFormat |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1263 |
"return the pageFormat - nil here. |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1264 |
This has NO meaning whatsoever to regular streams; |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1265 |
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
|
1266 |
|
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1267 |
^ nil |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1268 |
|
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1269 |
"Modified: / 15.5.1996 / 17:57:01 / cg" |
87864e021c20
added #pageFormat for printerStream protocol compatibility.
Claus Gittinger <cg@exept.de>
parents:
3462
diff
changeset
|
1270 |
"Created: / 29.5.1998 / 16:57:48 / cg" |
611 | 1271 |
! ! |
1272 |
||
62 | 1273 |
!Stream methodsFor:'reading'! |
1 | 1274 |
|
1275 |
next |
|
1276 |
"return the next element of the stream |
|
1277 |
- we do not know here how to do it, it must be redefined in subclass" |
|
1278 |
||
1279 |
^ self subclassResponsibility |
|
1280 |
! |
|
1281 |
||
1282 |
next:count |
|
1403 | 1283 |
"return the next count elements of the stream as aCollection, |
1284 |
which depends on the streams type - (see #contentsSpecies)." |
|
1 | 1285 |
|
329 | 1286 |
|answerStream |
285 | 1287 |
cnt "{ Class: SmallInteger }" | |
1 | 1288 |
|
329 | 1289 |
answerStream := WriteStream on:(self contentsSpecies new). |
285 | 1290 |
cnt := count. |
1291 |
1 to:cnt do:[:index | |
|
2332 | 1292 |
answerStream nextPut:(self next) |
1 | 1293 |
]. |
329 | 1294 |
^ answerStream contents |
1 | 1295 |
|
275 | 1296 |
" |
1297 |
(ReadStream on:#(1 2 3 4 5)) next:3 |
|
1298 |
(ReadStream on:'hello') next:3 |
|
1299 |
" |
|
1403 | 1300 |
|
1301 |
"Modified: 15.5.1996 / 17:57:58 / cg" |
|
1 | 1302 |
! |
1303 |
||
285 | 1304 |
nextAvailable:count |
1403 | 1305 |
"return the next count elements of the stream as aCollection. |
285 | 1306 |
If the stream reaches the end before count elements have been read, |
1403 | 1307 |
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
|
1308 |
The type of collection is specified in #contentsSpecies." |
285 | 1309 |
|
345 | 1310 |
|answerStream |
285 | 1311 |
cnt "{ Class: SmallInteger }"| |
1312 |
||
329 | 1313 |
answerStream := WriteStream on:(self contentsSpecies new). |
285 | 1314 |
cnt := count. |
1315 |
1 to:cnt do:[:index | |
|
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1316 |
self atEnd ifTrue:[ |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1317 |
^ answerStream contents |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1318 |
]. |
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1319 |
answerStream nextPut:(self next) |
285 | 1320 |
]. |
329 | 1321 |
^ answerStream contents |
285 | 1322 |
|
1323 |
" |
|
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1324 |
(ReadStream on:#(1 2 3 4 5)) nextAvailable:3 |
285 | 1325 |
(ReadStream on:#(1 2 3 4 5)) nextAvailable:10 |
1326 |
(ReadStream on:'hello') nextAvailable:3 |
|
1327 |
(ReadStream on:'hello') nextAvailable:10 |
|
1328 |
" |
|
1403 | 1329 |
|
3590
d22de87c7fbd
removed endOfStreamQuery - instead, handle unhandled exception
Claus Gittinger <cg@exept.de>
parents:
3586
diff
changeset
|
1330 |
"Modified: / 16.6.1998 / 15:52:41 / cg" |
285 | 1331 |
! |
1332 |
||
1 | 1333 |
nextMatchFor:anObject |
62 | 1334 |
"read an element from the receiver, return true if it was equal to |
1403 | 1335 |
the argument, anObject; false otherwise." |
62 | 1336 |
|
1337 |
^ (self next = anObject) |
|
1338 |
||
1339 |
" |
|
1340 |
|s| |
|
1341 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1342 |
s nextMatchFor:2 |
|
1343 |
" |
|
1344 |
" |
|
1345 |
|s| |
|
1346 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1347 |
s nextMatchFor:2. |
|
1348 |
s nextMatchFor:2 |
|
1349 |
" |
|
1403 | 1350 |
|
1351 |
"Modified: 15.5.1996 / 17:58:57 / cg" |
|
62 | 1352 |
! |
1353 |
||
2253
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1354 |
nextUpTo:anObject |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1355 |
"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
|
1356 |
elements, but excluding anObject. |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1357 |
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
|
1358 |
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
|
1359 |
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
|
1360 |
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
|
1361 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1362 |
|answerStream element| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1363 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1364 |
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
|
1365 |
[self atEnd] whileFalse:[ |
2332 | 1366 |
element := self peek. |
1367 |
(element = anObject) ifTrue: [ |
|
1368 |
^ answerStream contents |
|
1369 |
]. |
|
1370 |
answerStream nextPut:element. |
|
1371 |
self next. |
|
2253
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1372 |
]. |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1373 |
^ answerStream contents |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1374 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1375 |
" |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1376 |
|s| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1377 |
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
|
1378 |
Transcript showCR:(s nextUpTo:4). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1379 |
Transcript showCR:s next |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1380 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1381 |
|s| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1382 |
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
|
1383 |
Transcript showCR:(s upTo:4). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1384 |
Transcript showCR:s next |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1385 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1386 |
|s| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1387 |
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
|
1388 |
Transcript showCR:(s nextUpTo:9). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1389 |
Transcript showCR:s next |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1390 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1391 |
|s| |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1392 |
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
|
1393 |
Transcript showCR:(s upTo:9). |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1394 |
Transcript showCR:s next |
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 |
|
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1397 |
"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
|
1398 |
"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
|
1399 |
! |
2ba9ca59f25d
added #nextUpTo: - occasionally, you want to read the separator
Claus Gittinger <cg@exept.de>
parents:
2152
diff
changeset
|
1400 |
|
3315 | 1401 |
peekOrNil |
1402 |
"like #peek, this returns the next readAhead element, if available. |
|
1403 |
However, unlike #peek, this does not raise an atEnd-query signal - even |
|
1404 |
if handled. Instead, nil is returned immediately." |
|
1405 |
||
1406 |
self atEnd ifTrue:[^ nil]. |
|
1407 |
^ self peek |
|
1408 |
||
1409 |
"Created: / 5.3.1998 / 02:56:49 / cg" |
|
1410 |
"Modified: / 5.3.1998 / 13:45:07 / cg" |
|
1411 |
! |
|
1412 |
||
62 | 1413 |
skip:count |
1414 |
"skip count objects, return the receiver" |
|
1415 |
||
345 | 1416 |
|n "{ Class: SmallInteger }"| |
1417 |
||
1418 |
n := count. |
|
1419 |
||
62 | 1420 |
"dont know how to unread ..." |
345 | 1421 |
n < 0 ifTrue:[ |
4467 | 1422 |
PositionErrorSignal raiseRequest. |
1423 |
^ self |
|
62 | 1424 |
]. |
345 | 1425 |
n timesRepeat:self next |
62 | 1426 |
|
1427 |
" |
|
1428 |
|s| |
|
1429 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1430 |
s skip:4. |
|
1431 |
s next |
|
1432 |
" |
|
4467 | 1433 |
|
1434 |
"Modified: / 30.7.1999 / 12:12:10 / cg" |
|
62 | 1435 |
! |
1436 |
||
1437 |
skipFor:anObject |
|
1403 | 1438 |
"skip all objects up-to and including anObject; |
1439 |
return the element after anObject." |
|
62 | 1440 |
|
1441 |
(self skipThrough:anObject) notNil ifTrue:[ |
|
2332 | 1442 |
^ self next |
62 | 1443 |
]. |
1444 |
^ nil |
|
1445 |
||
1446 |
" |
|
1447 |
|s| |
|
1448 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1449 |
s skipFor:4. |
|
1450 |
" |
|
1403 | 1451 |
|
1452 |
"Modified: 15.5.1996 / 17:59:23 / cg" |
|
62 | 1453 |
! |
1454 |
||
1455 |
skipThrough:anObject |
|
77 | 1456 |
"skip all objects up-to and including anObject. Return the receiver if |
671 | 1457 |
skip was successful, otherwise (i.e. if not found) return nil. |
62 | 1458 |
The next read operation will return the element after anObject." |
1 | 1459 |
|
1460 |
|nextElement| |
|
1461 |
||
1462 |
[self atEnd] whileFalse:[ |
|
216 | 1463 |
nextElement := self next. |
1464 |
(nextElement = anObject) ifTrue: [ ^ self ] |
|
1 | 1465 |
]. |
1466 |
^ nil |
|
2 | 1467 |
|
62 | 1468 |
" |
1469 |
|s| |
|
1470 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1471 |
s skipThrough:4. |
|
1472 |
s next |
|
1473 |
" |
|
77 | 1474 |
! |
1475 |
||
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1476 |
skipThroughAll:aCollection |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1477 |
"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
|
1478 |
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
|
1479 |
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
|
1480 |
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
|
1481 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1482 |
|buffer l first idx| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1483 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1484 |
l := aCollection size. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1485 |
first := aCollection at:1. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1486 |
[self atEnd] whileFalse:[ |
2332 | 1487 |
buffer isNil ifTrue:[ |
1488 |
buffer := self nextAvailable:l. |
|
1489 |
]. |
|
1490 |
buffer = aCollection ifTrue:[ |
|
1491 |
^ self |
|
1492 |
]. |
|
1493 |
idx := buffer indexOf:first startingAt:2. |
|
1494 |
idx == 0 ifTrue:[ |
|
1495 |
buffer := nil |
|
1496 |
] ifFalse:[ |
|
1497 |
buffer := (buffer copyFrom:idx) , (self nextAvailable:(idx - 1)) |
|
1498 |
] |
|
2152
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1499 |
]. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1500 |
^ nil |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1501 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1502 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1503 |
|s| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1504 |
s := ReadStream on:'12345678901234567890'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1505 |
s skipThroughAll:'901'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1506 |
s upToEnd |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1507 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1508 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1509 |
|s| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1510 |
s := ReadStream on:'12345678901234567890'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1511 |
s skipThroughAll:'1234'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1512 |
s upToEnd |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1513 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1514 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1515 |
|s| |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1516 |
s := ReadStream on:'12345678901234567890'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1517 |
s skipThroughAll:'999'. |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1518 |
s atEnd |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1519 |
" |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1520 |
|
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1521 |
"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
|
1522 |
"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
|
1523 |
! |
6a42beaf7cc5
added a skipThroughAll:, which does not depend on being positionable.
Claus Gittinger <cg@exept.de>
parents:
1949
diff
changeset
|
1524 |
|
611 | 1525 |
through:anObject |
1526 |
"read a collection of all objects up-to anObject and return these |
|
1527 |
elements, including anObject. |
|
1528 |
The next read operation will return the element after anObject. |
|
1409 | 1529 |
If anObject is not encountered, all elements up to the end are read |
1530 |
and returned. |
|
611 | 1531 |
Compare this with #upTo: which also reads up to some object |
1532 |
and also positions behind it, but does not include it in the returned |
|
1533 |
value." |
|
1534 |
||
1535 |
|answerStream element| |
|
1536 |
||
1537 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1538 |
[self atEnd] whileFalse:[ |
|
2332 | 1539 |
element := self next. |
1540 |
answerStream nextPut:element. |
|
1541 |
(element = anObject) ifTrue: [ |
|
1542 |
^ answerStream contents |
|
1543 |
] |
|
611 | 1544 |
]. |
1545 |
^ answerStream contents |
|
1546 |
||
1547 |
" |
|
1548 |
|s| |
|
1549 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1422 | 1550 |
Transcript showCR:(s through:4). |
1551 |
Transcript showCR:s next |
|
1409 | 1552 |
|
1553 |
|s| |
|
1554 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1422 | 1555 |
Transcript showCR:(s through:9). |
1556 |
Transcript showCR:s next |
|
1409 | 1557 |
|
611 | 1558 |
|s| |
1559 |
s := ReadStream on:'hello world'. |
|
1422 | 1560 |
Transcript showCR:(s through:Character space). |
1561 |
Transcript showCR:(s upToEnd) |
|
611 | 1562 |
" |
1409 | 1563 |
|
1564 |
"Modified: 17.5.1996 / 08:51:40 / cg" |
|
611 | 1565 |
! |
1566 |
||
1548 | 1567 |
throughAll:aCollection |
1568 |
"read & return a collection of all objects up-to and including |
|
1569 |
a subcollection given by aCollection. |
|
1570 |
(i.e. read until a ``substring'' is encountered.) |
|
1571 |
The next read operation will return the element after aCollection. |
|
1572 |
If aCollection is not encountered, all elements up to the end are read |
|
1573 |
and returned." |
|
1574 |
||
1575 |
|answerStream element last rslt| |
|
1576 |
||
1577 |
last := aCollection last. |
|
1578 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1579 |
[self atEnd] whileFalse:[ |
|
2332 | 1580 |
element := self next. |
1581 |
answerStream nextPut:element. |
|
1582 |
element == last ifTrue:[ |
|
1583 |
((rslt := answerStream contents) endsWith:aCollection) ifTrue:[ |
|
1584 |
^ rslt |
|
1585 |
] |
|
1586 |
]. |
|
1548 | 1587 |
]. |
1588 |
^ answerStream contents |
|
1589 |
||
1590 |
" |
|
1591 |
|s| |
|
1592 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1593 |
Transcript showCR:(s throughAll:#(4 4 4)). |
|
1594 |
Transcript showCR:s next |
|
1595 |
||
1596 |
|s| |
|
1597 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1598 |
Transcript showCR:(s throughAll:#(4 5 6)). |
|
1599 |
Transcript showCR:s next |
|
1600 |
||
1601 |
|s| |
|
1602 |
s := ReadStream on:'hello world, this is some text'. |
|
1603 |
Transcript showCR:(s throughAll:'world'). |
|
1604 |
Transcript showCR:(s throughAll:'some'). |
|
1605 |
Transcript showCR:s upToEnd. |
|
1606 |
" |
|
1607 |
||
1608 |
"Modified: 15.7.1996 / 09:08:07 / cg" |
|
1609 |
! |
|
1610 |
||
3169
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1611 |
throughAny:aCollection |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1612 |
"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
|
1613 |
an element contained in aCollection. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1614 |
(i.e. read until any from aCollection is encountered.) |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1615 |
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
|
1616 |
and returned." |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1617 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1618 |
|answerStream element last| |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1619 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1620 |
last := aCollection last. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1621 |
answerStream := WriteStream on:(self contentsSpecies new). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1622 |
[self atEnd] whileFalse:[ |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1623 |
element := self next. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1624 |
answerStream nextPut:element. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1625 |
(aCollection includes:element) ifTrue:[ |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1626 |
^ answerStream contents |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1627 |
]. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1628 |
]. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1629 |
^ answerStream contents |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1630 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1631 |
" |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1632 |
|s| |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1633 |
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
|
1634 |
Transcript showCR:(s throughAny:#(3 4 5)). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1635 |
Transcript showCR:s next |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1636 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1637 |
|s| |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1638 |
s := ReadStream on:'hello world, this is some text'. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1639 |
Transcript showCR:(s throughAny:'wt'). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1640 |
Transcript showCR:(s throughAny:'wt'). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1641 |
Transcript showCR:s upToEnd. |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1642 |
" |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1643 |
|
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1644 |
"Modified: / 11.1.1998 / 15:28:04 / cg" |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1645 |
! |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1646 |
|
427 | 1647 |
upTo:anObject |
1648 |
"read a collection of all objects up-to anObject and return these |
|
1649 |
elements, but excluding anObject. |
|
1650 |
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
|
1651 |
(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
|
1652 |
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
|
1653 |
returned collection. |
1409 | 1654 |
If anObject is not encountered, all elements up to the end are read |
1655 |
and returned. |
|
427 | 1656 |
Compare this with #through: which also reads up to some object |
1657 |
and also positions behind it, but DOES include it in the returned |
|
1658 |
value." |
|
1659 |
||
1660 |
|answerStream element| |
|
1661 |
||
1662 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1663 |
[self atEnd] whileFalse:[ |
|
3176 | 1664 |
element := self next. |
1665 |
(element = anObject) ifTrue: [ |
|
1666 |
^ answerStream contents |
|
1667 |
]. |
|
1668 |
answerStream nextPut:element. |
|
427 | 1669 |
]. |
1670 |
^ answerStream contents |
|
1671 |
||
1672 |
" |
|
1673 |
|s| |
|
1674 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
|
1422 | 1675 |
Transcript showCR:(s upTo:4). |
1676 |
Transcript showCR:s next |
|
427 | 1677 |
|
3169
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1678 |
compare the above to: |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1679 |
|s| |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1680 |
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
|
1681 |
Transcript showCR:(s through:4). |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1682 |
Transcript showCR:s next |
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1683 |
|
427 | 1684 |
|s| |
1409 | 1685 |
s := ReadStream on:#(1 2 3 4 5 6 7 8). |
1422 | 1686 |
Transcript showCR:(s upTo:9). |
1687 |
Transcript showCR:s next |
|
1409 | 1688 |
|
1689 |
|s| |
|
427 | 1690 |
s := ReadStream on:'hello world'. |
1422 | 1691 |
Transcript showCR:(s upTo:Character space). |
1692 |
Transcript showCR:(s upToEnd) |
|
427 | 1693 |
|
1694 |
(ReadStream on:'12345678905') upTo:$5; upTo:$5 |
|
1695 |
||
1696 |
(ReadStream on:'123456') upTo:$7 |
|
1697 |
||
1698 |
(ReadStream on:#(1 2 3 4 5 6)) upTo:4 |
|
1699 |
||
1700 |
(ReadStream on:'line 1 |
|
3176 | 1701 |
line 2') upTo:Character cr |
427 | 1702 |
|
1703 |
'Makefile' asFilename readStream upTo:Character cr;upTo:Character cr |
|
1704 |
" |
|
1409 | 1705 |
|
3169
cef3b9a6de2c
moved upToAll: to positionableStream.
Claus Gittinger <cg@exept.de>
parents:
3154
diff
changeset
|
1706 |
"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
|
1707 |
"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
|
1708 |
! |
f73912c49864
Implement #upToAll: consistent with #upTo: and #upToAny: in Stream.
Stefan Vogel <sv@exept.de>
parents:
3169
diff
changeset
|
1709 |
|
3586 | 1710 |
upToAllExcluding:aCollection |
1711 |
"read a collection of all objects up-to a element which is contained in |
|
1712 |
aCollection and return these elements, but excluding the matching one. |
|
1713 |
The next read operation will return the element after aCollection. |
|
1714 |
If no such element is encountered, all elements up to the end are read |
|
1715 |
and returned. |
|
1716 |
Compare this with #throughAll: which also reads up to some object |
|
1717 |
and also positions behind it, but DOES include it in the returned |
|
1718 |
value." |
|
1719 |
||
1720 |
|answerStream element last rslt| |
|
1721 |
||
1722 |
last := aCollection last. |
|
1723 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1724 |
[self atEnd] whileFalse:[ |
|
1725 |
element := self next. |
|
1726 |
answerStream nextPut:element. |
|
1727 |
element == last ifTrue:[ |
|
1728 |
((rslt := answerStream contents) endsWith:aCollection) ifTrue:[ |
|
1729 |
^ rslt copyWithoutLast:aCollection size |
|
1730 |
] |
|
1731 |
]. |
|
1732 |
]. |
|
1733 |
^ answerStream contents |
|
1734 |
||
1735 |
" |
|
1736 |
|s| |
|
1737 |
s := ReadStream on:'hello world world'. |
|
1738 |
Transcript show:'<'; show:(s upToAllExcluding:'wo'); showCR:'>'. |
|
1739 |
Transcript show:'<'; show:(s upToAllExcluding:'wo'); showCR:'>'. |
|
1740 |
Transcript show:'<'; show:(s upToEnd); showCR:'>'. |
|
1741 |
" |
|
1742 |
||
1743 |
"Created: / 15.6.1998 / 19:11:31 / cg" |
|
1744 |
! |
|
1745 |
||
2894 | 1746 |
upToAny:aCollectionOfObjects |
2420 | 1747 |
"read a collection of all objects up-to a element which is contained in |
1748 |
aCollectionOfObjects and return these elements, but excluding the matching one. |
|
1749 |
The next read operation will return the element after anObject. |
|
1750 |
If no such element is encountered, all elements up to the end are read |
|
1751 |
and returned. |
|
1752 |
Compare this with #throughAll: which also reads up to some object |
|
1753 |
and also positions behind it, but DOES include it in the returned |
|
1754 |
value." |
|
1755 |
||
1756 |
|answerStream element| |
|
1757 |
||
1758 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1759 |
[self atEnd] whileFalse:[ |
|
3154 | 1760 |
element := self next. |
1761 |
(aCollectionOfObjects includes:element) ifTrue: [ |
|
1762 |
^ answerStream contents |
|
1763 |
]. |
|
1764 |
answerStream nextPut:element. |
|
2420 | 1765 |
]. |
1766 |
^ answerStream contents |
|
1767 |
||
1768 |
" |
|
1769 |
|s| |
|
1770 |
s := ReadStream on:'hello world'. |
|
3154 | 1771 |
Transcript showCR:(s upToAny:(Array with:Character space)). |
2420 | 1772 |
Transcript showCR:(s upToEnd) |
1773 |
||
3154 | 1774 |
'Makefile' asFilename readStream upToAny:($A to:$Z) |
1775 |
" |
|
2420 | 1776 |
|
3154 | 1777 |
"Created: / 30.8.1997 / 03:02:05 / cg" |
1778 |
"Modified: / 11.1.1998 / 15:19:18 / cg" |
|
2420 | 1779 |
! |
1780 |
||
77 | 1781 |
upToEnd |
1782 |
"return a collection of the elements up-to the end. |
|
1403 | 1783 |
Return an empty collection, if the stream-end is already at the end." |
77 | 1784 |
|
1785 |
|answerStream| |
|
1786 |
||
1787 |
answerStream := WriteStream on:(self contentsSpecies new). |
|
1788 |
[self atEnd] whileFalse:[ |
|
2332 | 1789 |
answerStream nextPut:(self next) |
77 | 1790 |
]. |
1791 |
^ answerStream contents |
|
1792 |
||
275 | 1793 |
" |
1794 |
(ReadStream on:'1234567890') upToEnd |
|
1795 |
('123456' readStream) next; next; upToEnd |
|
427 | 1796 |
('1 23456' readStream) upTo:Character space; upToEnd |
1403 | 1797 |
('12' readStream) next; next; upToEnd |
275 | 1798 |
" |
1403 | 1799 |
|
1800 |
"Modified: 15.5.1996 / 18:00:39 / cg" |
|
611 | 1801 |
! ! |
77 | 1802 |
|
3084 | 1803 |
!Stream methodsFor:'reading - strings'! |
1804 |
||
1805 |
nextAlphaNumericWord |
|
1806 |
"read the next word (i.e. up to non letter-or-digit). |
|
1807 |
Return a string containing those characters. |
|
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1808 |
Any leading non-alphaNumeric chars are skipped." |
3084 | 1809 |
|
1810 |
|s c| |
|
1811 |
||
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1812 |
[self atEnd |
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1813 |
or:[(c := self peek) isAlphaNumeric]] whileFalse:[ |
3084 | 1814 |
self next |
1815 |
]. |
|
1816 |
||
1817 |
self atEnd ifTrue:[^ nil]. |
|
1818 |
||
1819 |
s := ''. |
|
1820 |
||
1821 |
[self atEnd not |
|
1822 |
and:[(c := self peek) isLetterOrDigit]] whileTrue:[ |
|
1823 |
s := s copyWith:c. |
|
1824 |
self next |
|
1825 |
]. |
|
1826 |
||
1827 |
s size == 0 ifTrue:[^ nil]. |
|
1828 |
^ s. |
|
1829 |
||
1830 |
" |
|
1831 |
|s| |
|
1832 |
||
1833 |
s := 'hello world 1234 foo1 foo2' readStream. |
|
1834 |
[s atEnd] whileFalse:[ |
|
1835 |
Transcript showCR:(s nextAlphaNumericWord). |
|
1836 |
]. |
|
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1837 |
" |
3084 | 1838 |
|
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1839 |
" |
3084 | 1840 |
|s| |
1841 |
||
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1842 |
s := 'hello +++ #world ###123###abc### 1234 foo1 foo2' readStream. |
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
3106
diff
changeset
|
1843 |
[s atEnd] whileFalse:[ |
3084 | 1844 |
Transcript showCR:(s nextAlphaNumericWord). |
1845 |
]. |
|
1846 |
" |
|
1847 |
||
1848 |
"Modified: 15.5.1996 / 17:51:42 / cg" |
|
1849 |
! |
|
1850 |
||
1851 |
nextLine |
|
1852 |
"return the characters upTo (but excluding) the next cr (carriage return) |
|
1853 |
character (i.e. read a single line of text). |
|
1854 |
Added for protocol compatibility with externalStreams." |
|
1855 |
||
3462 | 1856 |
self atEnd ifTrue:[ |
1857 |
^ self pastEnd |
|
1858 |
]. |
|
3084 | 1859 |
^ self upTo:Character cr. |
1860 |
||
3462 | 1861 |
"Modified: / 19.5.1998 / 17:26:25 / cg" |
3084 | 1862 |
! |
1863 |
||
1864 |
nextWord |
|
1865 |
"return the next characters which form an alphanumeric word |
|
1866 |
(i.e. everything upTo (but excluding) the next non alphanumeric |
|
1867 |
element)" |
|
1868 |
||
1869 |
^ self nextAlphaNumericWord |
|
1870 |
||
1871 |
"Modified: 15.5.1996 / 17:39:32 / cg" |
|
1872 |
! ! |
|
1873 |
||
611 | 1874 |
!Stream methodsFor:'testing'! |
77 | 1875 |
|
611 | 1876 |
atEnd |
1877 |
"return true if the end of the stream has been reached; |
|
1878 |
- we do not know here how to do it, it must be redefined in subclass" |
|
77 | 1879 |
|
611 | 1880 |
^ self subclassResponsibility |
1 | 1881 |
! ! |
1882 |
||
62 | 1883 |
!Stream methodsFor:'writing'! |
1 | 1884 |
|
339 | 1885 |
commit |
1462
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1886 |
"alias for flush -- ST80 compatibility" |
339 | 1887 |
|
1462
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1888 |
^ self flush |
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1889 |
|
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1890 |
"Modified: 7.5.1996 / 23:55:39 / stefan" |
339 | 1891 |
! |
1892 |
||
611 | 1893 |
cr |
1403 | 1894 |
"append a carriage-return to the stream. |
1895 |
This is only allowed, if the receiver supports writing." |
|
611 | 1896 |
|
1897 |
self nextPut:(Character cr) |
|
1403 | 1898 |
|
1899 |
"Modified: 15.5.1996 / 18:01:21 / cg" |
|
611 | 1900 |
! |
1901 |
||
1902 |
crTab |
|
1903 |
"append a carriage-return followed by a tab to the stream. |
|
1403 | 1904 |
Same as crtab for ST/X backward compatibility. |
1905 |
This is only allowed, if the receiver supports writing." |
|
611 | 1906 |
|
1907 |
self obsoleteMethodWarning:'use crTab'. |
|
1908 |
self crtab |
|
1403 | 1909 |
|
1910 |
"Modified: 15.5.1996 / 18:01:28 / cg" |
|
611 | 1911 |
! |
1912 |
||
1913 |
crtab |
|
1403 | 1914 |
"append a carriage-return followed by a tab to the stream. |
1915 |
This is only allowed, if the receiver supports writing." |
|
1 | 1916 |
|
611 | 1917 |
self crtab:1 |
1403 | 1918 |
|
1919 |
"Modified: 15.5.1996 / 18:01:35 / cg" |
|
611 | 1920 |
! |
1921 |
||
1922 |
crtab:n |
|
1403 | 1923 |
"append a carriage-return followed by n tabs to the stream. |
1924 |
This is only allowed, if the receiver supports writing." |
|
611 | 1925 |
|
1926 |
self nextPut:(Character cr). |
|
1927 |
self next:n put:(Character tab) |
|
1403 | 1928 |
|
1929 |
"Modified: 15.5.1996 / 18:01:39 / cg" |
|
611 | 1930 |
! |
1931 |
||
1932 |
endEntry |
|
1933 |
"ignored here - for compatibility with Transcript" |
|
1934 |
||
1935 |
^ self |
|
1936 |
! |
|
1937 |
||
1938 |
ff |
|
1403 | 1939 |
"append a form-feed (new-pagee) to the receiver-stream. |
1940 |
This is only allowed, if the receiver supports writing." |
|
611 | 1941 |
|
1942 |
self nextPut:(Character ff) |
|
1403 | 1943 |
|
1944 |
"Modified: 15.5.1996 / 18:01:47 / cg" |
|
1 | 1945 |
! |
1946 |
||
701 | 1947 |
flush |
1462
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1948 |
"write out all unbuffered data - ignored here, but added |
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1949 |
to make internalStreams protocol compatible with externalStreams" |
701 | 1950 |
|
1462
7196fe152248
Cleanup #flush and #commit handling.
Stefan Vogel <sv@exept.de>
parents:
1448
diff
changeset
|
1951 |
"Modified: 7.5.1996 / 23:54:53 / stefan" |
701 | 1952 |
! |
1953 |
||
1 | 1954 |
next:count put:anObject |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1955 |
"put the argument, anObject count times onto the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1956 |
This is only allowed, if the receiver supports writing." |
1 | 1957 |
|
345 | 1958 |
|n "{ Class: SmallInteger }"| |
1959 |
||
1960 |
n := count. |
|
1961 |
n timesRepeat:[self nextPut:anObject]. |
|
1 | 1962 |
^ anObject |
62 | 1963 |
|
1964 |
" |
|
1965 |
|s| |
|
1966 |
||
1967 |
s := WriteStream on:#(). |
|
1968 |
s nextPut:1. |
|
1969 |
s next:5 put:2. |
|
1970 |
s nextPut:3. |
|
1971 |
s contents |
|
1972 |
" |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1973 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1974 |
"Modified: 11.7.1996 / 10:00:13 / cg" |
1 | 1975 |
! |
1976 |
||
611 | 1977 |
nextPut:anObject |
1978 |
"put the argument, anObject onto the receiver |
|
1979 |
- we do not know here how to do it, it must be redefined in subclass" |
|
1980 |
||
1981 |
^ self subclassResponsibility |
|
1982 |
! |
|
1983 |
||
1 | 1984 |
nextPutAll:aCollection |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1985 |
"put all elements of the argument, aCollection onto the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
1986 |
This is only allowed, if the receiver supports writing." |
1 | 1987 |
|
1988 |
aCollection do:[:element | |
|
2332 | 1989 |
self nextPut:element |
1 | 1990 |
]. |
1991 |
^ aCollection |
|
62 | 1992 |
|
1993 |
" |
|
1994 |
|s| |
|
1995 |
||
1996 |
s := WriteStream on:#(). |
|
1997 |
s nextPutAll:(1 to:5). |
|
1998 |
s nextPutAll:#('one' 'two' 'three'). |
|
1999 |
s contents |
|
2000 |
" |
|
2001 |
" |
|
2002 |
|s| |
|
2003 |
||
2004 |
s := WriteStream on:(String new). |
|
2005 |
s nextPutAll:($a to:$f). |
|
2006 |
s nextPutAll:'one '; |
|
2007 |
nextPutAll:'two '; |
|
2008 |
nextPutAll:'three'. |
|
2009 |
s contents |
|
2010 |
" |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2011 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2012 |
"Modified: 11.7.1996 / 10:00:21 / cg" |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2013 |
! |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2014 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2015 |
nextPutAll:aCollection startingAt:first |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2016 |
"append the elements starting with index to the end |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2017 |
of the argument, aCollection onto the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2018 |
This is only allowed, if the receiver supports writing." |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2019 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2020 |
self nextPutAll:aCollection startingAt:first to:(aCollection size). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2021 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2022 |
" |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2023 |
|s| |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2024 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2025 |
s := WriteStream on:#(). |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2026 |
s nextPutAll:#('one' 'two' 'three' 'four' 'five') startingAt:2. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2027 |
s contents |
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 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2030 |
"Modified: 11.7.1996 / 10:00:28 / cg" |
1 | 2031 |
! |
2032 |
||
2033 |
nextPutAll:aCollection startingAt:first to:last |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2034 |
"append the elements with index from first to last |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2035 |
of the argument, aCollection onto the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2036 |
This is only allowed, if the receiver supports writing." |
1 | 2037 |
|
2038 |
aCollection from:first to:last do:[:element | |
|
2332 | 2039 |
self nextPut:element |
1 | 2040 |
]. |
2041 |
^ aCollection |
|
62 | 2042 |
|
2043 |
" |
|
2044 |
|s| |
|
2045 |
||
2046 |
s := WriteStream on:#(). |
|
2047 |
s nextPutAll:#('one' 'two' 'three' 'four' 'five') startingAt:2 to:4. |
|
2048 |
s contents |
|
2049 |
" |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2050 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2051 |
"Modified: 11.7.1996 / 10:00:32 / cg" |
1 | 2052 |
! |
2053 |
||
5628
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2054 |
nextPutAllUntranslated:aCollection |
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2055 |
"for compatibility with printStreams (putAll - as-is without escapes)" |
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2056 |
|
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2057 |
self nextPutAll:aCollection |
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2058 |
! |
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2059 |
|
743 | 2060 |
nextPutLine:aCollection |
2061 |
"put all elements of the argument, aCollection onto the receiver, |
|
1949 | 2062 |
and append a cr (carriage return). |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2063 |
This is only useful with character streams in textMode, |
1949 | 2064 |
and only allowed, if the receiver supports writing." |
743 | 2065 |
|
2066 |
self nextPutAll:aCollection. |
|
2067 |
self cr. |
|
2068 |
||
2069 |
"Created: 13.12.1995 / 10:49:17 / cg" |
|
1949 | 2070 |
"Modified: 8.11.1996 / 23:53:41 / cg" |
743 | 2071 |
! |
2072 |
||
611 | 2073 |
print:anObject |
2074 |
"append a printed representation of anObject to the receiver. |
|
1403 | 2075 |
Same as 'anObject printOn:self'; Added for ST-80 compatibility." |
2 | 2076 |
|
611 | 2077 |
anObject printOn:self |
1403 | 2078 |
|
2079 |
" |
|
2080 |
|s| |
|
2081 |
||
2082 |
s := WriteStream on:''. |
|
2083 |
s nextPutAll:'one '; |
|
2084 |
print:1; |
|
2085 |
nextPutAll:' two '; |
|
2086 |
print:2. |
|
2087 |
||
2088 |
s contents |
|
2089 |
" |
|
2090 |
||
2091 |
"Modified: 15.5.1996 / 18:06:06 / cg" |
|
2 | 2092 |
! |
2093 |
||
1403 | 2094 |
show:something |
2095 |
"append a printed representation of the argument to the stream. |
|
2096 |
This makes streams somewhat compatible to TextCollectors and |
|
2097 |
allows you to say: |
|
2332 | 2098 |
Smalltalk at:#Transcript put:Stdout |
1422 | 2099 |
or to use #show:/#showCR: with internal or external streams." |
1 | 2100 |
|
1403 | 2101 |
^ self nextPutAll:something printString |
2102 |
||
2103 |
"Modified: 15.5.1996 / 18:04:48 / cg" |
|
1 | 2104 |
! |
2105 |
||
1414 | 2106 |
showCR:aString |
1403 | 2107 |
"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
|
2108 |
and append a newline character. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2109 |
This makes streams somewhat compatible to TextCollectors and |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2110 |
allows you to say: |
2332 | 2111 |
Smalltalk at:#Transcript put:Stdout |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2112 |
or to use #show:/#showCR: with internal or external streams." |
1 | 2113 |
|
2114 |
self show:aString. |
|
2115 |
self cr |
|
1403 | 2116 |
|
1414 | 2117 |
"Created: 18.5.1996 / 15:34:17 / cg" |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2118 |
"Modified: 11.7.1996 / 10:01:27 / cg" |
1414 | 2119 |
! |
2120 |
||
2121 |
showCr:aString |
|
2122 |
"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
|
2123 |
and append a newline character. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2124 |
This is obsolete ST/X backward compatibility; use #showCR:" |
1414 | 2125 |
|
2126 |
self obsoleteMethodWarning:'use #showCR:'. |
|
2127 |
self showCR:aString. |
|
2128 |
||
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2129 |
"Modified: 11.7.1996 / 10:01:50 / cg" |
62 | 2130 |
! |
2131 |
||
2132 |
space |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2133 |
"append a space character to the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2134 |
This is only allowed, if the receiver supports writing." |
62 | 2135 |
|
2136 |
self nextPut:(Character space) |
|
1403 | 2137 |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2138 |
"Modified: 11.7.1996 / 10:02:06 / cg" |
62 | 2139 |
! |
2140 |
||
2141 |
spaces:count |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2142 |
"append count space-characters to the receiver. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2143 |
This is only allowed, if the receiver supports writing." |
62 | 2144 |
|
2145 |
self next:count put:(Character space) |
|
1403 | 2146 |
|
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2147 |
"Modified: 11.7.1996 / 10:02:10 / cg" |
62 | 2148 |
! |
2149 |
||
611 | 2150 |
store:anObject |
2151 |
"append a printed representation of anObject to the receiver, |
|
1403 | 2152 |
from which the receiver can be reconstructed (i.e. its storeString). |
2153 |
Same as 'anObject storeOn:self'; Added for ST-80 compatibility." |
|
77 | 2154 |
|
611 | 2155 |
anObject storeOn:self |
1403 | 2156 |
|
2157 |
"Modified: 15.5.1996 / 18:05:55 / cg" |
|
77 | 2158 |
! |
2159 |
||
611 | 2160 |
tab |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2161 |
"append a tab-character to the stream. |
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2162 |
This is only allowed, if the receiver supports writing." |
77 | 2163 |
|
611 | 2164 |
self nextPut:(Character tab) |
1538
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2165 |
|
b62f12073403
commentary; added #nextPutAll:startingAt:
Claus Gittinger <cg@exept.de>
parents:
1462
diff
changeset
|
2166 |
"Modified: 11.7.1996 / 10:02:20 / cg" |
2443 | 2167 |
! |
2168 |
||
2169 |
tab:count |
|
2170 |
"append count tab-characters to the receiver. |
|
2171 |
This is only allowed, if the receiver supports writing." |
|
2172 |
||
2173 |
self next:count put:(Character tab) |
|
2174 |
||
2175 |
"Modified: 11.7.1996 / 10:02:10 / cg" |
|
77 | 2176 |
! ! |
2177 |
||
1949 | 2178 |
!Stream class methodsFor:'documentation'! |
701 | 2179 |
|
2180 |
version |
|
5628
1dc85c4c4b7c
added #nextPutAllUntranslated: (for printStream compatibility)
Claus Gittinger <cg@exept.de>
parents:
5395
diff
changeset
|
2181 |
^ '$Header: /cvs/stx/stx/libbasic/Stream.st,v 1.91 2000-09-26 10:36:28 cg Exp $' |
701 | 2182 |
! ! |
611 | 2183 |
Stream initialize! |