author | Claus Gittinger <cg@exept.de> |
Thu, 15 Jul 1999 21:45:54 +0200 | |
changeset 4392 | 26fb48f04e1b |
parent 4353 | 7e2ec99414c7 |
child 4526 | a42dc8e09586 |
permissions | -rw-r--r-- |
1 | 1 |
" |
5 | 2 |
COPYRIGHT (c) 1989 by Claus Gittinger |
159 | 3 |
All Rights Reserved |
1 | 4 |
|
5 |
This software is furnished under a license and may be used |
|
6 |
only in accordance with the terms of that license and with the |
|
7 |
inclusion of the above copyright notice. This software may not |
|
8 |
be provided or otherwise made available to, or used by, any |
|
9 |
other person. No title to or ownership of the software is |
|
10 |
hereby transferred. |
|
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" |
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||
13 |
ExternalStream subclass:#FileStream |
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instanceVariableNames:'pathName canPosition removeOnClose' |
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FileStream OpenErrorSignal is a querySignal, ExternalStream
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classVariableNames:'OpenErrorSignal' |
1088 | 16 |
poolDictionaries:'' |
17 |
category:'Streams-External' |
|
1 | 18 |
! |
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||
216 | 20 |
!FileStream primitiveDefinitions! |
1 | 21 |
%{ |
2903 | 22 |
|
1 | 23 |
#include <stdio.h> |
437 | 24 |
#define _STDIO_H_INCLUDED_ |
25 |
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|
10 | 27 |
#include <errno.h> |
437 | 28 |
#define _ERRNO_H_INCLUDED_ |
1 | 29 |
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30 |
#ifdef transputer |
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31 |
# include <iocntrl.h> |
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32 |
# ifndef fileno |
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33 |
/* kludge: inmos forgot fileno */ |
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34 |
# define fileno(f) ((f)->__file) |
|
35 |
# endif |
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36 |
#else |
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37 |
# include <sys/types.h> |
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38 |
# include <sys/stat.h> |
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#endif |
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10 | 40 |
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42 | 41 |
#ifdef hpux |
68 | 42 |
# define fileno(f) ((f->__fileH << 8) | (f->__fileL)) |
42 | 43 |
#endif |
44 |
||
10 | 45 |
#ifndef SEEK_SET |
13 | 46 |
# define SEEK_SET 0 |
10 | 47 |
#endif |
48 |
#ifndef SEEK_CUR |
|
13 | 49 |
# define SEEK_CUR 1 |
10 | 50 |
#endif |
51 |
#ifndef SEEK_END |
|
13 | 52 |
# define SEEK_END 2 |
10 | 53 |
#endif |
54 |
||
223 | 55 |
/* |
2921 | 56 |
* not all systems have off_t |
2808 | 57 |
* explicit add of those we know to have ... |
58 |
*/ |
|
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#ifdef __osf__ |
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60 |
# define OFF_T off_t |
|
61 |
#endif |
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62 |
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63 |
#ifndef OFF_T |
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# define OFF_T long |
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#endif |
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||
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#ifdef __VMS__ |
68 |
/* |
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69 |
* get those VMS definitions ... |
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*/ |
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# include <rms.h> |
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72 |
#endif |
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||
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#ifndef WIN32 |
75 |
extern long ftell(), lseek(); |
|
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#endif |
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||
2808 | 78 |
/* |
223 | 79 |
* on some systems errno is a macro ... check for it here |
80 |
*/ |
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#ifndef errno |
|
82 |
extern errno; |
|
83 |
#endif |
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||
1 | 85 |
%} |
173 | 86 |
! ! |
1 | 87 |
|
613 | 88 |
!FileStream class methodsFor:'documentation'! |
89 |
||
90 |
copyright |
|
91 |
" |
|
92 |
COPYRIGHT (c) 1989 by Claus Gittinger |
|
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All Rights Reserved |
|
94 |
||
95 |
This software is furnished under a license and may be used |
|
96 |
only in accordance with the terms of that license and with the |
|
97 |
inclusion of the above copyright notice. This software may not |
|
98 |
be provided or otherwise made available to, or used by, any |
|
99 |
other person. No title to or ownership of the software is |
|
100 |
hereby transferred. |
|
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" |
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! |
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||
104 |
documentation |
|
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" |
|
106 |
This class provides access to the operating systems underlying file |
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system (i.e. its an interface to the stdio library). |
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108 |
||
109 |
Notice, that on some systems, the standard I/O library has performance |
|
110 |
problems when a file is opened for readwrite. |
|
111 |
For best results, open files either readonly or writeonly. |
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1295 | 112 |
|
2921 | 113 |
Also notice, that some OperatingSystems do not fully support |
114 |
positioning a file stream. |
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115 |
For example, poor VMS does not allow positioning onto arbitrary |
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byte boundaries if the file is a variable-record-RMS file. |
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(stupid enough, this is the default for textfiles as created by |
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some tools ...) |
|
119 |
Therefore, the instance variable canPosition is set according to |
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this and an error is raised, if a position: is attemted. |
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I know, this is ugly, but what else could we do ? |
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123 |
[instance variables:] |
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pathName <String> the files path (if known) |
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canPosition <Boolean> positionable - read above comment |
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||
1295 | 127 |
[author:] |
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Claus Gittinger |
1295 | 129 |
|
130 |
[see also:] |
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Filename DirectoryStream PipeStream Socket |
613 | 132 |
" |
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! |
134 |
||
135 |
examples |
|
136 |
" |
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137 |
for VMS users only: |
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138 |
||
139 |
The #openWithMode:attributes: entry allows additional RMS attributes |
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to be passed in the second argument, which must be an array of strings |
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141 |
as described in the 'creat' RTL Library documentation. |
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142 |
||
143 |
For example, to create a file with fixed records and recordLength of 100, |
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144 |
use: |
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145 |
||
146 |
|newFile| |
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147 |
||
148 |
newFile := FileStream new pathName:'<nameOfFile>'. |
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newFile setMode:#writeonly. |
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newFile openWithMode:'w' attributes:#('rfm=fix' 'fsz=100'). |
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||
152 |
since all of the above is private protocol, and it is considered bad style to |
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access these from user programs, we recommend subclassing FileStream as |
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something like VMSFixedRecordFileStream, and redefine the instance creation |
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method(s) there as appropriate. |
|
156 |
This will retain VMS specifics in one place and enhance maintanability. |
|
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" |
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! ! |
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||
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!FileStream class methodsFor:'initialization'! |
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initialize |
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OpenErrorSignal isNil ifTrue:[ |
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"/ |
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"/ this is temporary - for now allow an openError to |
b3530950854a
use new initialization message of signal.
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parents:
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"/ be unhandled and proceed by returning a nil from the |
b3530950854a
use new initialization message of signal.
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parents:
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167 |
"/ stream creation method. |
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use new initialization message of signal.
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168 |
"/ In the future, this will be a hard signal. |
b3530950854a
use new initialization message of signal.
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parents:
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"/ |
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OpenErrorSignal := QuerySignal new. |
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OpenErrorSignal parent:(super openErrorSignal) mayProceed:true. |
2921 | 172 |
OpenErrorSignal nameClass:self message:#openErrorSignal. |
173 |
OpenErrorSignal notifierString:'open error'. |
|
174 |
] |
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parents:
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"Modified: 8.10.1997 / 11:56:39 / cg" |
2921 | 177 |
! ! |
178 |
||
1 | 179 |
!FileStream class methodsFor:'instance creation'! |
180 |
||
613 | 181 |
appendingOldFileNamed:filename |
182 |
"return a FileStream for existing file named filename, aString. |
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183 |
The file is opened for writeonly access." |
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1 | 184 |
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185 |
|newStream| |
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2 | 186 |
newStream := self new pathName:filename. |
613 | 187 |
newStream openForAppending isNil ifTrue:[^nil]. |
188 |
" |
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189 |
this is not a good idea; I might like to read the written stuff ... |
|
190 |
||
191 |
newStream readLimit:(newStream size). |
|
192 |
" |
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193 |
^ newStream |
|
194 |
! |
|
195 |
||
196 |
appendingOldFileNamed:filename in:aDirectory |
|
197 |
"return a FileStream for existing file named filename, aString |
|
198 |
in aDirectory, a FileDirectory. |
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The file is opened for writeonly access." |
|
200 |
||
201 |
|newStream| |
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202 |
newStream := self new pathName:filename in:aDirectory. |
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newStream openForAppending isNil ifTrue:[^nil]. |
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" |
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this is not a good idea; I might like to read the written stuff ... |
|
206 |
||
207 |
newStream readLimit:(newStream size). |
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208 |
" |
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1 | 209 |
^ newStream |
210 |
! |
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211 |
||
613 | 212 |
fileNamed:filename |
213 |
"return a stream on file filename - if the file does not |
|
214 |
already exist, create it. |
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92 | 215 |
The file is opened for read/write access." |
1 | 216 |
|
613 | 217 |
|stream| |
218 |
||
219 |
stream := self oldFileNamed:filename. |
|
220 |
stream isNil ifTrue:[ |
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221 |
stream := self newFileNamed:filename |
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]. |
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223 |
^ stream |
|
224 |
! |
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225 |
||
226 |
fileNamed:filename in:aDirectory |
|
227 |
"return a stream on file filename - if the file does not |
|
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already exist, create it. |
|
229 |
The file is opened for read/write access." |
|
230 |
||
231 |
|stream| |
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232 |
||
233 |
stream := self oldFileNamed:filename in:aDirectory. |
|
234 |
stream isNil ifTrue:[ |
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235 |
stream := self newFileNamed:filename in:aDirectory |
|
236 |
]. |
|
237 |
^ stream |
|
1 | 238 |
! |
239 |
||
92 | 240 |
newFileForWritingNamed:filename |
241 |
"return a FileStream for new file named filename, aString. |
|
242 |
If the file exists, it is truncated, otherwise created. |
|
243 |
The file is opened for writeonly access." |
|
244 |
||
245 |
|newStream| |
|
246 |
newStream := self new pathName:filename. |
|
247 |
newStream createForWriting isNil ifTrue:[^nil]. |
|
248 |
^ newStream |
|
249 |
! |
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250 |
||
251 |
newFileForWritingNamed:filename in:aDirectory |
|
252 |
"return a FileStream for new file named filename, aString |
|
253 |
in aDirectory, a FileDirectory. |
|
254 |
If the file exists, it is truncated, otherwise created. |
|
255 |
The file is opened for writeonly access." |
|
256 |
||
257 |
|newStream| |
|
258 |
newStream := self new pathName:filename in:aDirectory. |
|
259 |
newStream createForWriting isNil ifTrue:[^nil]. |
|
260 |
^ newStream |
|
261 |
! |
|
262 |
||
613 | 263 |
newFileNamed:filename |
264 |
"return a FileStream for new file named filename, aString. |
|
265 |
If the file exists, it is truncated, otherwise created. |
|
266 |
The file is opened for read/write access." |
|
267 |
||
268 |
|newStream| |
|
269 |
newStream := self new pathName:filename. |
|
270 |
newStream createForReadWrite isNil ifTrue:[^nil]. |
|
271 |
^ newStream |
|
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allow for fileNames to be passed to #pathName:
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parents:
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changeset
|
272 |
|
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parents:
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diff
changeset
|
273 |
"Modified: / 28.10.1997 / 14:28:08 / cg" |
613 | 274 |
! |
275 |
||
276 |
newFileNamed:filename in:aDirectory |
|
277 |
"return a FileStream for new file named filename, aString |
|
278 |
in aDirectory, a FileDirectory. |
|
279 |
If the file exists, it is truncated, otherwise created. |
|
280 |
The file is opened for read/write access." |
|
281 |
||
282 |
|newStream| |
|
283 |
newStream := self new pathName:filename in:aDirectory. |
|
284 |
newStream createForReadWrite isNil ifTrue:[^nil]. |
|
285 |
^ newStream |
|
286 |
! |
|
287 |
||
1 | 288 |
oldFileNamed:filename |
289 |
"return a FileStream for existing file named filename, aString. |
|
290 |
The file is opened for read/write access." |
|
291 |
||
292 |
|newStream| |
|
293 |
||
294 |
(OperatingSystem isReadable:filename) ifFalse:[^nil]. |
|
2 | 295 |
newStream := self new pathName:filename. |
1 | 296 |
newStream readwrite. |
297 |
newStream openForReadWrite isNil ifTrue:[^nil]. |
|
42 | 298 |
" |
299 |
this is not a good idea; someone else might be appending ... |
|
300 |
||
1 | 301 |
newStream readLimit:(newStream size). |
42 | 302 |
" |
1 | 303 |
^ newStream |
304 |
! |
|
305 |
||
306 |
oldFileNamed:filename in:aDirectory |
|
307 |
"return a FileStream for existing file named filename, aString |
|
308 |
in aDirectory, a FileDirectory. |
|
309 |
The file is opened for read/write access." |
|
310 |
||
311 |
|newStream| |
|
2 | 312 |
newStream := self new pathName:filename in:aDirectory. |
1 | 313 |
newStream openForReadWrite isNil ifTrue:[^nil]. |
42 | 314 |
" |
315 |
this is not a good idea; someone else might be appending ... |
|
316 |
||
1 | 317 |
newStream readLimit:(newStream size). |
42 | 318 |
" |
1 | 319 |
^ newStream |
320 |
! |
|
321 |
||
322 |
readonlyFileNamed:filename |
|
323 |
"return a readonly FileStream for existing file named filename, aString" |
|
324 |
||
325 |
|newStream| |
|
326 |
||
327 |
(OperatingSystem isReadable:filename) ifFalse:[^nil]. |
|
328 |
||
2 | 329 |
newStream := self new pathName:filename. |
1 | 330 |
newStream openForReading isNil ifTrue:[^nil]. |
42 | 331 |
" |
332 |
this is not a good idea; someone else might be appending ... |
|
333 |
||
1 | 334 |
newStream readLimit:(newStream size). |
42 | 335 |
" |
1 | 336 |
^ newStream |
337 |
! |
|
338 |
||
339 |
readonlyFileNamed:filename in:aDirectory |
|
340 |
"return a readonly FileStream for existing file named filename, aString |
|
341 |
in aDirectory, a FileDirectory" |
|
342 |
||
343 |
|newStream| |
|
2 | 344 |
newStream := self new pathName:filename in:aDirectory. |
1 | 345 |
newStream openForReading isNil ifTrue:[^nil]. |
42 | 346 |
" |
347 |
this is not a good idea; someone else might be appending ... |
|
348 |
||
1 | 349 |
newStream readLimit:(newStream size). |
42 | 350 |
" |
1 | 351 |
^ newStream |
159 | 352 |
! ! |
353 |
||
3233
1d29ae45b333
Must redefine #openErrorSignal.
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parents:
3231
diff
changeset
|
354 |
!FileStream class methodsFor:'Signal constants'! |
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
355 |
|
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
356 |
openErrorSignal |
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
357 |
"return the FileStream specific openErrorSignal. |
1d29ae45b333
Must redefine #openErrorSignal.
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parents:
3231
diff
changeset
|
358 |
This is different from ExternalStream>>OpenErrorSignal!!" |
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
359 |
|
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
360 |
^ OpenErrorSignal |
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
361 |
|
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
362 |
"Created: / 28.1.1998 / 14:41:18 / stefan" |
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
363 |
! ! |
1d29ae45b333
Must redefine #openErrorSignal.
Stefan Vogel <sv@exept.de>
parents:
3231
diff
changeset
|
364 |
|
4353 | 365 |
!FileStream class methodsFor:'Squeak compatibility'! |
366 |
||
367 |
readOnlyFileNamed:filename |
|
368 |
^ self readonlyFileNamed:filename |
|
369 |
! ! |
|
370 |
||
3044 | 371 |
!FileStream methodsFor:'Squeak compatibility'! |
372 |
||
373 |
fullName |
|
374 |
"Squeak compatibility: return the full pathname" |
|
375 |
||
376 |
^ pathName asFilename pathName |
|
377 |
||
378 |
"Created: 17.10.1997 / 17:04:12 / cg" |
|
379 |
"Modified: 20.10.1997 / 19:22:44 / cg" |
|
380 |
! ! |
|
381 |
||
1 | 382 |
!FileStream methodsFor:'accessing'! |
383 |
||
384 |
directoryName |
|
2903 | 385 |
"return the name of the directory I'm in as a string" |
1 | 386 |
|
2903 | 387 |
^ pathName asFilename directoryName |
1 | 388 |
! |
389 |
||
390 |
name |
|
2903 | 391 |
"return my name without leading direcory-path (i.e. the plain fileName) |
392 |
as a string" |
|
1 | 393 |
|
2903 | 394 |
^ pathName asFilename baseName |
1 | 395 |
! |
396 |
||
397 |
pathName |
|
398 |
"return the pathname" |
|
399 |
||
400 |
^ pathName |
|
613 | 401 |
! |
402 |
||
3754
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
403 |
removeOnClose:aBoolean |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
404 |
"set/clear the removeOnClose flag. |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
405 |
If set, the file will be removed when closed. |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
406 |
Provided mostly for OS's which do not allow an |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
407 |
open file to be removed (i.e. non unixes), |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
408 |
and a fileStream for a tempFile is used. |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
409 |
Especially, the CVS-SourceCodeManager returns |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
410 |
this kind of file-handles occasionally. |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
411 |
This is an ST/X special feature which is not portable |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
412 |
to other systems." |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
413 |
|
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
414 |
removeOnClose := aBoolean |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
415 |
|
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
416 |
"Modified: / 13.8.1998 / 12:10:07 / cg" |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
417 |
! |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
418 |
|
613 | 419 |
store:something |
420 |
"what really should this do" |
|
421 |
||
422 |
self nextPutAll:something storeString |
|
423 |
! ! |
|
424 |
||
425 |
!FileStream methodsFor:'error handling'! |
|
426 |
||
427 |
openError |
|
2963 | 428 |
"{ Pragma: +optSpace }" |
429 |
||
613 | 430 |
"report an error, that file open failed" |
431 |
||
432 |
"/ |
|
2921 | 433 |
"/ for now, error on open only raises a querySignal. |
434 |
"/ If its not handled, a failing open will return nil. |
|
435 |
"/ Currently, all users of fileStream check for this |
|
436 |
"/ nil return value (which is a historic leftover) |
|
437 |
"/ |
|
438 |
"/ This will change in one of the next ST/X releases - for |
|
439 |
"/ now, it is best to provide an exceptionHandler AND check the |
|
440 |
"/ return value. |
|
441 |
"/ Sorry about that. |
|
613 | 442 |
"/ |
443 |
LastErrorNumber := lastErrorNumber. |
|
2921 | 444 |
super openError. |
445 |
^ nil |
|
613 | 446 |
! ! |
447 |
||
3754
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
448 |
!FileStream methodsFor:'instance release'! |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
449 |
|
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
450 |
closeFile |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
451 |
"low level close - may be redefined in subclasses" |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
452 |
|
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
453 |
super closeFile. |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
454 |
removeOnClose == true ifTrue:[ |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
455 |
pathName asFilename remove. |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
456 |
] |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
457 |
|
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
458 |
"Created: / 13.8.1998 / 12:11:22 / cg" |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
459 |
! ! |
e281b9479361
added removeOnClose feature.
Claus Gittinger <cg@exept.de>
parents:
3233
diff
changeset
|
460 |
|
2936
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
461 |
!FileStream methodsFor:'positioning'! |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
462 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
463 |
position |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
464 |
"return the read/write position in the file - |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
465 |
notice, in smalltalk indices start at 1 so begin of file is 1" |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
466 |
|
3971 | 467 |
%{ |
2936
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
468 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
469 |
FILE *f; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
470 |
long currentPosition; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
471 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
472 |
if (__INST(filePointer) != nil) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
473 |
f = __FILEVal(__INST(filePointer)); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
474 |
do { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
475 |
if (__INST(buffered) == true) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
476 |
currentPosition = ftell(f); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
477 |
} else { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
478 |
currentPosition = lseek(fileno(f), 0L, SEEK_CUR); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
479 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
480 |
} while ((currentPosition < 0) && (errno == EINTR)); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
481 |
if (currentPosition >= 0) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
482 |
/* |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
483 |
* notice: Smalltalk index starts at 1 |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
484 |
*/ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
485 |
RETURN ( __MKSMALLINT(currentPosition + 1) ); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
486 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
487 |
__INST(lastErrorNumber) = __MKSMALLINT(errno); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
488 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
489 |
%}. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
490 |
lastErrorNumber notNil ifTrue:[^ self ioError]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
491 |
filePointer isNil ifTrue:[^ self errorNotOpen]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
492 |
^ self primitiveFailed |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
493 |
! |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
494 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
495 |
position:newPos |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
496 |
"set the read/write position in the file" |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
497 |
|
3971 | 498 |
%{ |
2936
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
499 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
500 |
FILE *f; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
501 |
long ret; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
502 |
OBJ fp; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
503 |
long nP; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
504 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
505 |
if ((__INST(canPosition) != false) |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
506 |
|| (newPos == __MKSMALLINT(1))) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
507 |
if ((fp = __INST(filePointer)) != nil) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
508 |
if (__isSmallInteger(newPos)) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
509 |
f = __FILEVal(fp); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
510 |
nP = (long)__intVal(newPos); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
511 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
512 |
/* |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
513 |
* notice: Smalltalk index starts at 1 |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
514 |
*/ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
515 |
nP--; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
516 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
517 |
do { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
518 |
if (__INST(buffered) == true) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
519 |
ret = fseek(f, nP, SEEK_SET); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
520 |
} else { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
521 |
ret = lseek(fileno(f), nP, SEEK_SET); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
522 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
523 |
} while ((ret < 0) && (errno == EINTR)); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
524 |
if (ret >= 0) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
525 |
__INST(position) = newPos; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
526 |
/* |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
527 |
* just to make certain ... |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
528 |
*/ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
529 |
__INST(hitEOF) = false; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
530 |
RETURN ( self ); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
531 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
532 |
__INST(lastErrorNumber) = __MKSMALLINT(errno); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
533 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
534 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
535 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
536 |
%}. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
537 |
canPosition == false ifTrue:[ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
538 |
"/ position by rewinding & re-reading everything up-to |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
539 |
"/ that point. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
540 |
^ self slowPosition:newPos |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
541 |
]. |
2963 | 542 |
lastErrorNumber notNil ifTrue:[ |
543 |
(OperatingSystem errorSymbolForNumber:lastErrorNumber) == #EINVAL ifTrue:[ |
|
544 |
"/ invalid position |
|
545 |
^ self positionError |
|
546 |
]. |
|
547 |
"/ assume I/O error |
|
548 |
^ self ioError |
|
549 |
]. |
|
2936
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
550 |
filePointer isNil ifTrue:[^ self errorNotOpen]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
551 |
^ self primitiveFailed |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
552 |
! |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
553 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
554 |
setToEnd |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
555 |
"set the read/write position in the file to be at the end of the file" |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
556 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
557 |
%{ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
558 |
FILE *f; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
559 |
long ret; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
560 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
561 |
if (__INST(filePointer) != nil) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
562 |
f = __FILEVal(__INST(filePointer)); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
563 |
__INST(position) = nil; |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
564 |
do { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
565 |
if (__INST(buffered) == true) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
566 |
ret = fseek(f, 0L, SEEK_END); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
567 |
} else { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
568 |
ret = lseek(fileno(f), 0L, SEEK_END); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
569 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
570 |
} while ((ret < 0) && (errno == EINTR)); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
571 |
if (ret >= 0) { |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
572 |
RETURN ( self ); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
573 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
574 |
__INST(lastErrorNumber) = __MKSMALLINT(errno); |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
575 |
} |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
576 |
%}. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
577 |
lastErrorNumber notNil ifTrue:[^ self ioError]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
578 |
filePointer isNil ifTrue:[^ self errorNotOpen]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
579 |
^ self primitiveFailed |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
580 |
! |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
581 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
582 |
slowPosition:newPos |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
583 |
"position the file by re-reading everything up-to newPos. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
584 |
The effect is the same as that of #position:, but its much slower. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
585 |
This is required to reposition nonPositionable streams, such |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
586 |
as tape-streams or variable-record-RMS files under VMS. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
587 |
Caveat: |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
588 |
This should really be done transparently by the stdio library." |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
589 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
590 |
|buffer amount| |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
591 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
592 |
self isReadable ifFalse:[ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
593 |
"/ sorry |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
594 |
^ self positionError |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
595 |
]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
596 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
597 |
buffer := ByteArray new:8*1024. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
598 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
599 |
(position isNil "/ i.e. unknown |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
600 |
or:[newPos < position]) ifTrue:[ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
601 |
self reset. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
602 |
]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
603 |
[position < newPos] whileTrue:[ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
604 |
amount := (buffer size) min:(newPos-position). |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
605 |
(self nextBytes:amount into:buffer startingAt:1) ~~ amount ifTrue:[ |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
606 |
^ self positionError |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
607 |
]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
608 |
]. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
609 |
"/ ('FileStream [info]: slow position - please convert ''' , pathName printString , ''' to streamLF format') infoPrintCR. |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
610 |
! ! |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
611 |
|
613 | 612 |
!FileStream methodsFor:'printing & storing'! |
613 |
||
614 |
printOn:aStream |
|
4392 | 615 |
"append a user printed representation of the receiver to aStream. |
616 |
The format is suitable for a human - not meant to be read back." |
|
2903 | 617 |
|
613 | 618 |
aStream nextPutAll:'(a FileStream for:'. |
2811
21136662e8f1
dont crash into debugger when printing with nil pathName
Claus Gittinger <cg@exept.de>
parents:
2808
diff
changeset
|
619 |
aStream nextPutAll:pathName printString. |
613 | 620 |
aStream nextPut:$) |
2811
21136662e8f1
dont crash into debugger when printing with nil pathName
Claus Gittinger <cg@exept.de>
parents:
2808
diff
changeset
|
621 |
|
21136662e8f1
dont crash into debugger when printing with nil pathName
Claus Gittinger <cg@exept.de>
parents:
2808
diff
changeset
|
622 |
"Modified: 30.7.1997 / 13:51:01 / cg" |
613 | 623 |
! |
624 |
||
625 |
storeOn:aStream |
|
2903 | 626 |
"append a representation of the receiver to aStream, |
627 |
from which a copy can be reconstructed later." |
|
628 |
||
613 | 629 |
aStream nextPutAll:'(FileStream oldFileNamed:'. |
2811
21136662e8f1
dont crash into debugger when printing with nil pathName
Claus Gittinger <cg@exept.de>
parents:
2808
diff
changeset
|
630 |
aStream nextPutAll:pathName storeString. |
613 | 631 |
(self position ~~ 1) ifTrue:[ |
2811
21136662e8f1
dont crash into debugger when printing with nil pathName
Claus Gittinger <cg@exept.de>
parents:
2808
diff
changeset
|
632 |
aStream nextPutAll:'; position:'. |
21136662e8f1
dont crash into debugger when printing with nil pathName
Claus Gittinger <cg@exept.de>
parents:
2808
diff
changeset
|
633 |
self position storeOn:aStream |
613 | 634 |
]. |
635 |
aStream nextPut:$) |
|
2811
21136662e8f1
dont crash into debugger when printing with nil pathName
Claus Gittinger <cg@exept.de>
parents:
2808
diff
changeset
|
636 |
|
21136662e8f1
dont crash into debugger when printing with nil pathName
Claus Gittinger <cg@exept.de>
parents:
2808
diff
changeset
|
637 |
"Modified: 30.7.1997 / 16:43:50 / cg" |
1 | 638 |
! ! |
639 |
||
640 |
!FileStream methodsFor:'private'! |
|
641 |
||
613 | 642 |
createForReadWrite |
643 |
"create/truncate the file for read/write. |
|
644 |
If the file existed, its truncated; otherwise its created." |
|
1 | 645 |
|
613 | 646 |
mode := #readwrite. |
2921 | 647 |
^ self openWithMode:CreateReadWriteMode |
1 | 648 |
! |
649 |
||
613 | 650 |
createForWriting |
651 |
"create/truncate the file for writeonly. |
|
652 |
If the file existed, its truncated; otherwise its created." |
|
1 | 653 |
|
613 | 654 |
mode := #writeonly. |
655 |
didWrite := true. |
|
2921 | 656 |
^ self openWithMode:WriteMode |
1 | 657 |
! |
658 |
||
659 |
open |
|
660 |
"open the file" |
|
661 |
||
662 |
pathName isNil ifTrue:[^nil]. |
|
663 |
(mode == #readonly) ifTrue: [ |
|
159 | 664 |
didWrite := false. |
2921 | 665 |
^ self openWithMode:ReadMode |
1 | 666 |
]. |
667 |
(mode == #writeonly) ifTrue: [ |
|
159 | 668 |
didWrite := true. |
2921 | 669 |
^ self openWithMode:WriteMode |
1 | 670 |
]. |
2921 | 671 |
^ self openWithMode:ReadWriteMode |
1 | 672 |
! |
673 |
||
613 | 674 |
openForAppending |
675 |
"open the file for writeonly appending to the end. |
|
676 |
If the file does not exist its an error, return nil; |
|
677 |
otherwise return the receiver." |
|
678 |
||
679 |
mode := #writeonly. |
|
680 |
didWrite := true. |
|
2921 | 681 |
^ self openWithMode:AppendMode |
613 | 682 |
! |
683 |
||
684 |
openForReadWrite |
|
685 |
"open the file for read/write. |
|
686 |
If the file does not exist its an error, return nil; |
|
687 |
otherwise return the receiver." |
|
688 |
||
689 |
mode := #readwrite. |
|
2921 | 690 |
^ self openWithMode:ReadWriteMode |
613 | 691 |
! |
692 |
||
693 |
openForReading |
|
694 |
"open the file for readonly. |
|
695 |
If the file does not exist its an error, return nil; |
|
696 |
otherwise return the receiver." |
|
697 |
||
698 |
mode := #readonly. |
|
699 |
didWrite := false. |
|
2921 | 700 |
^ self openWithMode:ReadMode |
613 | 701 |
! |
702 |
||
703 |
openForWriting |
|
704 |
"open the file writeonly. |
|
705 |
If the file does not exist its an error, return nil; |
|
706 |
otherwise return the receiver." |
|
707 |
||
708 |
mode := #writeonly. |
|
709 |
didWrite := true. |
|
2921 | 710 |
^ self openWithMode:ReadWriteMode "unix-io does not allow this; open for update here" |
613 | 711 |
! |
712 |
||
1 | 713 |
openWithMode:openmode |
2921 | 714 |
"open the file; |
715 |
openmode is the string defining the way to open as defined by the stdio library |
|
716 |
(i.e. the 2nd fopen argument). |
|
717 |
||
718 |
This is a private entry, but maybe useful to open a file in a special mode, |
|
719 |
which is proprietrary to the operatingSystem." |
|
720 |
||
721 |
^ self openWithMode:openmode attributes:nil |
|
722 |
! |
|
723 |
||
724 |
openWithMode:openmode attributes:attributeSpec |
|
2908 | 725 |
"open the file; |
2921 | 726 |
openmode is the string defining the way to open as defined by the stdio library |
727 |
(i.e. the 2nd fopen argument). |
|
728 |
||
729 |
attributeSpec is an additional argument, only used with VMS - it allows a file to |
|
730 |
be created as fixedRecord, variableRecord, streamLF, streamCR, ... |
|
731 |
In VMS, if nonNil, it must consist of an array of strings (max:10), giving additional |
|
732 |
attributes (see fopen description). |
|
733 |
Passing a nil specifies the default format (streamLF) - ST/X always invokes this with nil. |
|
734 |
This argument is ignored in UNIX & MSDOS systems. |
|
735 |
||
736 |
This is a private entry, but maybe useful to open/create a file in a special mode, |
|
737 |
which is proprietrary to the operatingSystem." |
|
1 | 738 |
|
2963 | 739 |
|ok| |
159 | 740 |
|
741 |
filePointer notNil ifTrue:[^ self errorOpen]. |
|
2963 | 742 |
ok := false. |
1 | 743 |
%{ |
744 |
FILE *f; |
|
2763 | 745 |
FILE *fopen(); |
477
8710aba7876b
oops - making id's real objects requires a store macro
Claus Gittinger <cg@exept.de>
parents:
475
diff
changeset
|
746 |
OBJ path, fp; |
2078
0a5a557b5194
Try to collect unref files if there are no filedescriptors available.
Stefan Vogel <sv@exept.de>
parents:
1295
diff
changeset
|
747 |
int pass = 0; |
1 | 748 |
|
2078
0a5a557b5194
Try to collect unref files if there are no filedescriptors available.
Stefan Vogel <sv@exept.de>
parents:
1295
diff
changeset
|
749 |
retry: |
1133 | 750 |
path = __INST(pathName); |
328 | 751 |
if (__isNonNilObject(path) && (__qClass(path)==String)) { |
3034 | 752 |
#ifdef __VMS__ |
2161 | 753 |
do { |
2921 | 754 |
/* |
755 |
* allow passing additional RMS arguments. |
|
3034 | 756 |
* stupid: DEC does not seem to offer an interface for passing a char **. |
2921 | 757 |
*/ |
2974 | 758 |
errno = 0; |
759 |
||
2921 | 760 |
{ |
761 |
if (__isArray(attributeSpec)) { |
|
762 |
OBJ *ap = __ArrayInstPtr(attributeSpec)->a_element; |
|
763 |
int numAttrib = 0; |
|
764 |
int i; |
|
765 |
||
766 |
numAttrib = __arraySize(attributeSpec); |
|
767 |
for (i=0; i<numAttrib;i++) { |
|
768 |
if (! __isString(ap[i])) { |
|
769 |
f = NULL; |
|
770 |
errno = EINVAL; /* invalid argument */ |
|
771 |
goto getOutOfHere; |
|
772 |
} |
|
773 |
} |
|
774 |
switch (numAttrib) { |
|
775 |
case 0: |
|
3034 | 776 |
__BEGIN_INTERRUPTABLE__ |
2921 | 777 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode)); |
3034 | 778 |
__END_INTERRUPTABLE__ |
2921 | 779 |
break; |
780 |
case 1: |
|
3034 | 781 |
__BEGIN_INTERRUPTABLE__ |
2921 | 782 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
783 |
__stringVal(ap[0])); |
|
3034 | 784 |
__END_INTERRUPTABLE__ |
2921 | 785 |
break; |
786 |
case 2: |
|
3034 | 787 |
__BEGIN_INTERRUPTABLE__ |
2921 | 788 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
789 |
__stringVal(ap[0]), __stringVal(ap[1])); |
|
3034 | 790 |
__END_INTERRUPTABLE__ |
2921 | 791 |
break; |
792 |
case 3: |
|
3034 | 793 |
__BEGIN_INTERRUPTABLE__ |
2921 | 794 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
795 |
__stringVal(ap[0]), __stringVal(ap[1]), __stringVal(ap[2])); |
|
3034 | 796 |
__END_INTERRUPTABLE__ |
2921 | 797 |
break; |
798 |
case 4: |
|
3034 | 799 |
__BEGIN_INTERRUPTABLE__ |
2921 | 800 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
801 |
__stringVal(ap[0]), __stringVal(ap[1]), __stringVal(ap[2]), |
|
802 |
__stringVal(ap[3])); |
|
3034 | 803 |
__END_INTERRUPTABLE__ |
2921 | 804 |
break; |
805 |
case 5: |
|
3034 | 806 |
__BEGIN_INTERRUPTABLE__ |
2921 | 807 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
808 |
__stringVal(ap[0]), __stringVal(ap[1]), __stringVal(ap[2]), |
|
809 |
__stringVal(ap[3]), __stringVal(ap[4])); |
|
3034 | 810 |
__END_INTERRUPTABLE__ |
2921 | 811 |
break; |
812 |
case 6: |
|
3034 | 813 |
__BEGIN_INTERRUPTABLE__ |
2921 | 814 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
815 |
__stringVal(ap[0]), __stringVal(ap[1]), __stringVal(ap[2]), |
|
816 |
__stringVal(ap[3]), __stringVal(ap[4]), __stringVal(ap[5])); |
|
3034 | 817 |
__END_INTERRUPTABLE__ |
2921 | 818 |
break; |
819 |
case 7: |
|
3034 | 820 |
__BEGIN_INTERRUPTABLE__ |
2921 | 821 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
822 |
__stringVal(ap[0]), __stringVal(ap[1]), __stringVal(ap[2]), |
|
823 |
__stringVal(ap[3]), __stringVal(ap[4]), __stringVal(ap[5]), |
|
824 |
__stringVal(ap[6])); |
|
3034 | 825 |
__END_INTERRUPTABLE__ |
2921 | 826 |
break; |
827 |
case 8: |
|
3034 | 828 |
__BEGIN_INTERRUPTABLE__ |
2921 | 829 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
830 |
__stringVal(ap[0]), __stringVal(ap[1]), __stringVal(ap[2]), |
|
831 |
__stringVal(ap[3]), __stringVal(ap[4]), __stringVal(ap[5]), |
|
832 |
__stringVal(ap[6]), __stringVal(ap[7])); |
|
3034 | 833 |
__END_INTERRUPTABLE__ |
2921 | 834 |
break; |
835 |
case 9: |
|
3034 | 836 |
__BEGIN_INTERRUPTABLE__ |
2921 | 837 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
838 |
__stringVal(ap[0]), __stringVal(ap[1]), __stringVal(ap[2]), |
|
839 |
__stringVal(ap[3]), __stringVal(ap[4]), __stringVal(ap[5]), |
|
840 |
__stringVal(ap[6]), __stringVal(ap[7]), __stringVal(ap[8])); |
|
3034 | 841 |
__END_INTERRUPTABLE__ |
2921 | 842 |
break; |
843 |
case 10: |
|
3034 | 844 |
__BEGIN_INTERRUPTABLE__ |
2921 | 845 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), |
846 |
__stringVal(ap[0]), __stringVal(ap[1]), __stringVal(ap[2]), |
|
847 |
__stringVal(ap[3]), __stringVal(ap[4]), __stringVal(ap[5]), |
|
848 |
__stringVal(ap[6]), __stringVal(ap[7]), __stringVal(ap[8]), |
|
849 |
__stringVal(ap[9])); |
|
3034 | 850 |
__END_INTERRUPTABLE__ |
2921 | 851 |
break; |
852 |
default: |
|
853 |
f = NULL; |
|
854 |
errno = E2BIG; /* too many args */ |
|
855 |
goto getOutOfHere; |
|
856 |
} |
|
857 |
} else if (attributeSpec != nil) { |
|
858 |
f = NULL; |
|
859 |
errno = EINVAL; /* invalid argument */ |
|
860 |
goto getOutOfHere; |
|
861 |
} else { |
|
862 |
/* |
|
863 |
* create file as sequential streamLF by default. |
|
864 |
*/ |
|
3034 | 865 |
__BEGIN_INTERRUPTABLE__ |
2921 | 866 |
f = fopen((char *)__stringVal(path), (char *)__stringVal(openmode), "rfm=stmlf"); |
3034 | 867 |
__END_INTERRUPTABLE__ |
2921 | 868 |
} |
869 |
} |
|
3034 | 870 |
/* must refetch - could be GC'd */ |
871 |
path = __INST(pathName); |
|
872 |
} while ((f == NULL) && (errno == EINTR)); |
|
2921 | 873 |
#else |
3034 | 874 |
do { |
875 |
__BEGIN_INTERRUPTABLE__ |
|
3039 | 876 |
# ifdef LINUX |
2921 | 877 |
/* |
4272 | 878 |
* LINUX may ret a non-NULL f even when interrupted. |
879 |
* Therefore, check errno and fake a null-ret. |
|
2921 | 880 |
*/ |
2161 | 881 |
errno = 0; |
2763 | 882 |
f = fopen((char *) __stringVal(path), (char *) __stringVal(openmode)); |
2161 | 883 |
if (errno == EINTR) |
884 |
f = NULL; |
|
2921 | 885 |
# else |
2763 | 886 |
f = fopen((char *) __stringVal(path), (char *) __stringVal(openmode)); |
2921 | 887 |
# endif |
3034 | 888 |
__END_INTERRUPTABLE__ |
2817
10f114dfe605
oops - GC while being in an interrupted file-open may lead to bad path-string access
Claus Gittinger <cg@exept.de>
parents:
2811
diff
changeset
|
889 |
/* must refetch - could be GC'd */ |
10f114dfe605
oops - GC while being in an interrupted file-open may lead to bad path-string access
Claus Gittinger <cg@exept.de>
parents:
2811
diff
changeset
|
890 |
path = __INST(pathName); |
2161 | 891 |
} while ((f == NULL) && (errno == EINTR)); |
3034 | 892 |
#endif |
2921 | 893 |
|
2161 | 894 |
if (f == NULL) { |
895 |
/* |
|
896 |
* If no filedescriptors available, try to finalize |
|
897 |
* possibly collected fd's and try again. |
|
898 |
*/ |
|
899 |
if (pass == 0 && (errno == ENFILE || errno == EMFILE)) { |
|
900 |
pass = 1; |
|
901 |
__SSEND0(@global(ObjectMemory), @symbol(scavenge), 0); |
|
902 |
__SSEND0(@global(ObjectMemory), @symbol(finalize), 0); |
|
903 |
goto retry; |
|
904 |
} |
|
2921 | 905 |
getOutOfHere: ; |
2161 | 906 |
__INST(lastErrorNumber) = __MKSMALLINT(errno); |
907 |
__INST(position) = nil; |
|
908 |
} else { |
|
2921 | 909 |
#ifdef __VMS__ |
910 |
/* |
|
911 |
* check to see if this is positionable ... |
|
912 |
*/ |
|
913 |
__INST(canPosition) = false; |
|
914 |
# ifndef _POSIX_C_SOURCE |
|
915 |
{ |
|
916 |
struct stat statBuffer; |
|
917 |
||
918 |
if (fstat(fileno(f), &statBuffer) >= 0) { |
|
919 |
switch (statBuffer.st_fab_rfm) { |
|
920 |
case FAB$C_UDF: /* undefined (also stream binary) */ |
|
921 |
case FAB$C_VAR: /* variable length records */ |
|
922 |
case FAB$C_VFC: /* variable fixed control */ |
|
923 |
case FAB$C_STM: /* RMS-11 stream (valid only for sequen> */ |
|
924 |
default: |
|
925 |
__INST(canPosition) = false; |
|
926 |
break; |
|
927 |
||
928 |
case FAB$C_FIX: /* fixed length records */ |
|
929 |
case FAB$C_STMLF: /* LF stream (valid only for sequential> */ |
|
930 |
case FAB$C_STMCR: /* CR stream (valid only for sequential> */ |
|
931 |
__INST(canPosition) = true; |
|
932 |
break; |
|
933 |
} |
|
934 |
} |
|
935 |
} |
|
936 |
# endif |
|
937 |
#else /* not VMS */ |
|
938 |
__INST(canPosition) = true; |
|
939 |
#endif /* poor VMS */ |
|
940 |
||
2766 | 941 |
__INST(filePointer) = fp = __MKOBJ((INT)f); __STORE(self, fp); |
2161 | 942 |
__INST(position) = __MKSMALLINT(1); |
2963 | 943 |
ok = true; |
2161 | 944 |
} |
1 | 945 |
} |
159 | 946 |
%}. |
2963 | 947 |
ok ifFalse:[ |
2161 | 948 |
" |
949 |
the open failed for some reason ... |
|
950 |
" |
|
951 |
^ self openError |
|
1 | 952 |
]. |
2963 | 953 |
buffered := true. "default is buffered" |
954 |
Lobby register:self. |
|
1 | 955 |
! |
956 |
||
613 | 957 |
pathName:filename |
958 |
"set the pathname" |
|
1 | 959 |
|
3051
29d10c26d6a3
allow for fileNames to be passed to #pathName:
Claus Gittinger <cg@exept.de>
parents:
3044
diff
changeset
|
960 |
pathName := filename asString |
29d10c26d6a3
allow for fileNames to be passed to #pathName:
Claus Gittinger <cg@exept.de>
parents:
3044
diff
changeset
|
961 |
|
29d10c26d6a3
allow for fileNames to be passed to #pathName:
Claus Gittinger <cg@exept.de>
parents:
3044
diff
changeset
|
962 |
"Modified: / 28.10.1997 / 14:29:01 / cg" |
1 | 963 |
! |
964 |
||
613 | 965 |
pathName:filename in:aDirectory |
966 |
"set the pathname starting at aDirectory, a FileDirectory" |
|
77 | 967 |
|
3051
29d10c26d6a3
allow for fileNames to be passed to #pathName:
Claus Gittinger <cg@exept.de>
parents:
3044
diff
changeset
|
968 |
pathName := aDirectory asFilename constructString:filename |
29d10c26d6a3
allow for fileNames to be passed to #pathName:
Claus Gittinger <cg@exept.de>
parents:
3044
diff
changeset
|
969 |
|
29d10c26d6a3
allow for fileNames to be passed to #pathName:
Claus Gittinger <cg@exept.de>
parents:
3044
diff
changeset
|
970 |
"Modified: / 28.10.1997 / 14:28:54 / cg" |
1 | 971 |
! |
972 |
||
973 |
reOpen |
|
974 |
"sent after snapin to reopen streams" |
|
975 |
||
173 | 976 |
|oldPos| |
977 |
||
1 | 978 |
filePointer notNil ifTrue:[ |
2161 | 979 |
"it was open, when snapped-out" |
980 |
filePointer := nil. |
|
981 |
Lobby unregister:self. |
|
982 |
oldPos := position. |
|
983 |
self open. |
|
984 |
filePointer isNil ifTrue:[ |
|
2903 | 985 |
"/ this happens, if after a restart, |
986 |
"/ the file is no longer present or accessable ..." |
|
13 | 987 |
|
2161 | 988 |
(self class name , ' [warning]: could not reOpen file: ', pathName) errorPrintCR. |
989 |
] ifFalse:[ |
|
3940 | 990 |
oldPos notNil ifTrue:[ |
991 |
self position:oldPos. |
|
992 |
] |
|
2161 | 993 |
] |
1 | 994 |
] |
1088 | 995 |
|
2134
246a3bdab8b4
newStyle info & error messages
Claus Gittinger <cg@exept.de>
parents:
2078
diff
changeset
|
996 |
"Modified: 10.1.1997 / 17:50:51 / cg" |
2921 | 997 |
! |
998 |
||
999 |
setMode:aModeSymbol |
|
1000 |
mode := aModeSymbol |
|
31 | 1001 |
! ! |
1002 |
||
2921 | 1003 |
!FileStream methodsFor:'queries'! |
613 | 1004 |
|
2903 | 1005 |
fileSize |
613 | 1006 |
"return the size in bytes of the file" |
1007 |
||
3971 | 1008 |
%{ |
613 | 1009 |
|
1010 |
#ifdef transputer |
|
1011 |
FILE *f; |
|
1012 |
int size; |
|
1013 |
||
1133 | 1014 |
if (__INST(filePointer) != nil) { |
1015 |
f = __FILEVal(__INST(filePointer)); |
|
613 | 1016 |
if ((size = filesize(fileno(f))) >= 0) { |
1133 | 1017 |
RETURN ( __MKSMALLINT(size) ); |
613 | 1018 |
} |
1019 |
} |
|
1020 |
#else |
|
1021 |
FILE *f; |
|
1022 |
struct stat buf; |
|
1023 |
int ret; |
|
1024 |
int fd; |
|
1025 |
||
1133 | 1026 |
if (__INST(filePointer) != nil) { |
1027 |
f = __FILEVal(__INST(filePointer)); |
|
613 | 1028 |
fd = fileno(f); |
1029 |
do { |
|
1030 |
ret = fstat(fd, &buf); |
|
1031 |
} while ((ret < 0) && (errno == EINTR)); |
|
1032 |
if (ret >= 0) { |
|
1133 | 1033 |
RETURN ( __MKSMALLINT(buf.st_size) ); |
613 | 1034 |
} |
1133 | 1035 |
__INST(lastErrorNumber) = __MKSMALLINT(errno); |
613 | 1036 |
} |
1037 |
#endif |
|
1038 |
%}. |
|
1039 |
||
1040 |
"could add a fall-back here: |
|
1041 |
||
1042 |
oldPosition := self position. |
|
1043 |
self setToEnd. |
|
1044 |
sz := self position. |
|
1045 |
self position:oldPosition. |
|
1046 |
^ sz |
|
1047 |
" |
|
1048 |
lastErrorNumber notNil ifTrue:[^ self ioError]. |
|
1049 |
filePointer isNil ifTrue:[^ self errorNotOpen]. |
|
1050 |
^ self primitiveFailed |
|
2936
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
1051 |
! |
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
1052 |
|
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
1053 |
size |
2998
930360fb3f12
#size is not really obsolete
Claus Gittinger <cg@exept.de>
parents:
2992
diff
changeset
|
1054 |
"return the size of the stream; |
930360fb3f12
#size is not really obsolete
Claus Gittinger <cg@exept.de>
parents:
2992
diff
changeset
|
1055 |
thats the number of bytes of the file." |
930360fb3f12
#size is not really obsolete
Claus Gittinger <cg@exept.de>
parents:
2992
diff
changeset
|
1056 |
|
930360fb3f12
#size is not really obsolete
Claus Gittinger <cg@exept.de>
parents:
2992
diff
changeset
|
1057 |
"/ no obsoleteMethodWarning - size is ok for streams. |
930360fb3f12
#size is not really obsolete
Claus Gittinger <cg@exept.de>
parents:
2992
diff
changeset
|
1058 |
"/ self obsoleteMethodWarning:'use #fileSize'. |
930360fb3f12
#size is not really obsolete
Claus Gittinger <cg@exept.de>
parents:
2992
diff
changeset
|
1059 |
|
2936
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
1060 |
^ self fileSize. |
2998
930360fb3f12
#size is not really obsolete
Claus Gittinger <cg@exept.de>
parents:
2992
diff
changeset
|
1061 |
|
930360fb3f12
#size is not really obsolete
Claus Gittinger <cg@exept.de>
parents:
2992
diff
changeset
|
1062 |
"Modified: 4.10.1997 / 18:01:09 / cg" |
1 | 1063 |
! ! |
1064 |
||
2 | 1065 |
!FileStream methodsFor:'testing'! |
1066 |
||
1067 |
isFileStream |
|
1068 |
"return true, if the receiver is some kind of fileStream. |
|
1069 |
redefined from Object" |
|
1070 |
||
1071 |
^ true |
|
1072 |
! ! |
|
1073 |
||
1088 | 1074 |
!FileStream class methodsFor:'documentation'! |
1075 |
||
1076 |
version |
|
4392 | 1077 |
^ '$Header: /cvs/stx/stx/libbasic/FileStream.st,v 1.65 1999-07-15 19:45:33 cg Exp $' |
1088 | 1078 |
! ! |
2936
5cce0f2166d9
OpenErrorSignal already defined in super (ExternalStream).
Stefan Vogel <sv@exept.de>
parents:
2921
diff
changeset
|
1079 |
FileStream initialize! |