/usr/share/gnu-smalltalk/kernel/Transcript.st is in gnu-smalltalk-common 3.2.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 | "======================================================================
|
| Smalltalk Transcript object (TextCollector class)
|
|
======================================================================"
"======================================================================
|
| Copyright 1988,92,94,95,99,2000,2001,2008,2009
| Free Software Foundation, Inc.
| Written by Paolo Bonzini.
|
| This file is part of the GNU Smalltalk class library.
|
| The GNU Smalltalk class library is free software; you can redistribute it
| and/or modify it under the terms of the GNU Lesser General Public License
| as published by the Free Software Foundation; either version 2.1, or (at
| your option) any later version.
|
| The GNU Smalltalk class library is distributed in the hope that it will be
| useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
| General Public License for more details.
|
| You should have received a copy of the GNU Lesser General Public License
| along with the GNU Smalltalk class library; see the file COPYING.LIB.
| If not, write to the Free Software Foundation, 59 Temple Place - Suite
| 330, Boston, MA 02110-1301, USA.
|
======================================================================"
Stream subclass: TextCollector [
| semaphore receiver selector |
<category: 'Streams'>
<comment: 'I am a thread-safe class that maps between standard Stream protocol and
a single message to another object (its selector is pluggable and should
roughly correspond to #nextPutAll:). I am, in fact, the class that
implements the global Transcript object.'>
TextCollector class >> new [
<category: 'accessing'>
self shouldNotImplement
]
TextCollector class >> message: receiverToSelectorAssociation [
"Answer a new instance of the receiver, that uses the message identified
by anAssociation to perform write operations. anAssociation's
key is the receiver, while its value is the selector."
<category: 'accessing'>
^(self basicNew)
initialize;
message: receiverToSelectorAssociation
]
message [
"Answer an association representing the message to be sent
to perform write operations. The key is the receiver, the value is the
selector"
<category: 'set up'>
^receiver -> selector
]
message: receiverToSelectorAssociation [
"Set the message to be sent to perform write operations
to the one represented by anAssociation. anAssociation's key is the
receiver, while its value is the selector"
<category: 'set up'>
receiver := receiverToSelectorAssociation key.
selector := receiverToSelectorAssociation value
]
cr [
"Emit a new-line (carriage return) to the Transcript"
<category: 'accessing'>
self nl
]
endEntry [
"Emit two new-lines. This method is present for compatibility with
VisualWorks."
<category: 'accessing'>
self
nl;
nl
]
nextPut: aCharacter [
"Emit aCharacter to the Transcript"
<category: 'accessing'>
self nextPutAll: (String with: aCharacter)
]
next: anInteger put: anObject [
"Write anInteger copies of anObject to the Transcript"
<category: 'accessing'>
self nextPutAll: (String new: anInteger withAll: anObject)
]
critical: aBlock [
"Evaluate aBlock while holding the Transcript lock"
<category: 'accessing'>
semaphore critical: aBlock
]
next: n putAll: aString startingAt: pos [
"Write aString to the Transcript"
<category: 'accessing'>
semaphore critical:
[self primNextPutAll: (aString copyFrom: pos to: pos + n - 1).
Processor idle]
]
show: aString [
"Write aString to the Transcript"
<category: 'accessing'>
semaphore critical:
[self primNextPutAll: aString.
Processor idle]
]
showCr: aString [
"Write aString to the Transcript, followed by a new-line character"
<category: 'accessing'>
semaphore critical:
[self primNextPutAll: aString.
self primNextPutAll: Character nl asString.
Processor idle]
]
showOnNewLine: aString [
"Write aString to the Transcript, preceded by a new-line character"
<category: 'accessing'>
semaphore critical:
[self primNextPutAll: Character nl asString.
self primNextPutAll: aString.
Processor idle]
]
print: anObject [
"Print anObject's representation to the Transcript"
<category: 'printing'>
semaphore critical:
[self primNextPutAll: anObject printString.
Processor idle]
]
printOn: aStream [
"Print a representation of the receiver onto aStream"
<category: 'printing'>
self == Transcript
ifTrue: [aStream nextPutAll: 'Transcript']
ifFalse: [super printOn: aStream]
]
store: anObject [
"Print Smalltalk code which evaluates to anObject on the Transcript"
<category: 'storing'>
semaphore critical:
[self primNextPutAll: anObject storeString.
Processor idle]
]
storeOn: aStream [
"Print Smalltalk code which evaluates to the receiver onto aStream"
<category: 'storing'>
self == Transcript
ifTrue: [aStream nextPutAll: 'Transcript']
ifFalse: [super storeOn: aStream]
]
primNextPutAll: aString [
"Private - Forward the writing request to the actual object"
<category: 'private'>
[receiver perform: selector with: aString]
on: Error do: [:ex | stderr nextPutAll: aString; flush. ex return]
]
initialize [
"Private - Initialize the receiver's instance variables"
<category: 'private'>
semaphore := RecursionLock new
]
]
Eval [
Smalltalk at: #Transcript
put: (TextCollector message: stdout -> #nextPutAllFlush:)
]
|