author | Claus Gittinger <cg@exept.de> |
Fri, 10 Sep 2004 13:16:19 +0200 | |
changeset 8530 | edcadeea17a1 |
parent 8140 | 7cc7ac5f29ca |
child 8614 | 88421fbd4ab6 |
permissions | -rw-r--r-- |
1 | 1 |
" |
5 | 2 |
COPYRIGHT (c) 1988 by Claus Gittinger |
202 | 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. |
|
11 |
" |
|
12 |
||
5810 | 13 |
"{ Package: 'stx:libbasic' }" |
14 |
||
1 | 15 |
PositionableStream subclass:#ReadStream |
970
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
829
diff
changeset
|
16 |
instanceVariableNames:'' |
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
829
diff
changeset
|
17 |
classVariableNames:'' |
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
829
diff
changeset
|
18 |
poolDictionaries:'' |
3b59c9b38dbb
ST80 compatibility: generate signal at end of stream when instance variable
Stefan Vogel <sv@exept.de>
parents:
829
diff
changeset
|
19 |
category:'Streams' |
1 | 20 |
! |
21 |
||
2162
7e1601f633b6
ff is a separator too (in #skipSeparators*)
Claus Gittinger <cg@exept.de>
parents:
1688
diff
changeset
|
22 |
!ReadStream class methodsFor:'documentation'! |
88 | 23 |
|
24 |
copyright |
|
25 |
" |
|
26 |
COPYRIGHT (c) 1988 by Claus Gittinger |
|
202 | 27 |
All Rights Reserved |
1 | 28 |
|
88 | 29 |
This software is furnished under a license and may be used |
30 |
only in accordance with the terms of that license and with the |
|
31 |
inclusion of the above copyright notice. This software may not |
|
32 |
be provided or otherwise made available to, or used by, any |
|
33 |
other person. No title to or ownership of the software is |
|
34 |
hereby transferred. |
|
35 |
" |
|
36 |
! |
|
1 | 37 |
|
88 | 38 |
documentation |
39 |
" |
|
40 |
ReadStream defines protocol for reading streamwise over collections. |
|
1295 | 41 |
|
42 |
[author:] |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
43 |
Claus Gittinger |
1295 | 44 |
|
88 | 45 |
" |
46 |
! ! |
|
1 | 47 |
|
202 | 48 |
!ReadStream methodsFor:'converting'! |
49 |
||
50 |
readStream |
|
51 |
"return a readStream from the receiver. Since this is already |
|
52 |
a readStream, return self." |
|
53 |
||
54 |
^ self |
|
8140
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
55 |
! |
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
56 |
|
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
57 |
readStreamOrNil |
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
58 |
"return a readStream from the receiver. Since this is already |
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
59 |
a readStream, return self. |
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
60 |
|
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
61 |
This method has been defined for protocol copmatibility with Filename" |
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
62 |
|
7cc7ac5f29ca
Define #xxxStreamOrNil methods.
Stefan Vogel <sv@exept.de>
parents:
8098
diff
changeset
|
63 |
^ self |
202 | 64 |
! ! |
65 |
||
1400 | 66 |
!ReadStream methodsFor:'emphasis'! |
67 |
||
68 |
emphasis |
|
69 |
"return the emphasis of the current (i.e. next returned by #next) |
|
70 |
element. Streams on a string will return nil for all elements. |
|
71 |
Streams on collections which nothing at all about emphasises, |
|
72 |
will report an error." |
|
73 |
||
7114 | 74 |
^ collection emphasisAt:(position - ZeroPosition + 1). |
1400 | 75 |
|
76 |
" |
|
77 |
|t s| |
|
78 |
||
79 |
t := 'hello world' asText |
|
7114 | 80 |
emphasizeFrom:1 to:5 with:#bold; |
81 |
emphasizeFrom:7 to:11 with:#italic. |
|
1400 | 82 |
|
83 |
s := t readStream. |
|
84 |
[s atEnd] whileFalse:[ |
|
7114 | 85 |
Transcript show:(s emphasis); show:' '. |
86 |
Transcript show:''''; show:(s next); showCR:''''. |
|
1400 | 87 |
]. |
88 |
" |
|
89 |
||
90 |
"Modified: 15.5.1996 / 17:30:33 / cg" |
|
91 |
! ! |
|
92 |
||
345 | 93 |
!ReadStream methodsFor:'queries'! |
94 |
||
5310 | 95 |
copyFrom:beginning to:end |
96 |
^ collection copyFrom:beginning to:end |
|
97 |
! |
|
98 |
||
345 | 99 |
isReadable |
2997 | 100 |
"return true, if reading is supported by the recevier. |
101 |
Here, true is always returned." |
|
102 |
||
345 | 103 |
^ true |
2997 | 104 |
|
105 |
"Modified: 4.10.1997 / 17:59:21 / cg" |
|
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
106 |
! |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
107 |
|
6315 | 108 |
isWritable |
109 |
"return true, if writing is supported by the recevier. |
|
110 |
This has to be redefined in concrete subclasses." |
|
111 |
||
112 |
^ false |
|
113 |
! |
|
114 |
||
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
115 |
size |
2997 | 116 |
"return the number of elements in the streamed collection." |
117 |
||
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
118 |
^ collection size |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
119 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
120 |
"Created: 13.9.1996 / 18:14:35 / cg" |
2997 | 121 |
"Modified: 4.10.1997 / 17:59:45 / cg" |
345 | 122 |
! ! |
123 |
||
59 | 124 |
!ReadStream methodsFor:'reading'! |
1 | 125 |
|
126 |
next |
|
127 |
"return the next element; advance read pointer. |
|
2 | 128 |
return nil, if there is no next element. |
345 | 129 |
- tuned for a bit more speed on String/ByteArray/Array-Streams" |
1 | 130 |
|
131 |
|ret| |
|
132 |
||
133 |
%{ /* NOCONTEXT */ |
|
134 |
||
135 |
REGISTER int pos; |
|
136 |
unsigned ch; |
|
252 | 137 |
OBJ coll, p, l; |
1 | 138 |
|
1133 | 139 |
coll = __INST(collection); |
140 |
p = __INST(position); |
|
141 |
l = __INST(readLimit); |
|
1 | 142 |
|
252 | 143 |
if (__isNonNilObject(coll) && __bothSmallInteger(p, l)) { |
144 |
||
8098
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
145 |
pos = __intVal(p); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
146 |
/* make 1-based */ |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
147 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
148 |
if (pos > 0 && pos <= __intVal(l)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
149 |
OBJ cls; |
59 | 150 |
|
8098
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
151 |
cls = __qClass(coll); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
152 |
if (cls == @global(String)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
153 |
if (pos <= __stringSize(coll)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
154 |
__INST(position) = __MKSMALLINT(__intVal(__INST(position)) + 1); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
155 |
ch = __stringVal(coll)[pos-1]; |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
156 |
RETURN ( __MKCHARACTER(ch) ); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
157 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
158 |
} else if (cls == @global(ByteArray)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
159 |
if (pos <= __byteArraySize(coll)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
160 |
__INST(position) = __MKSMALLINT(__intVal(__INST(position)) + 1); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
161 |
ch = __ByteArrayInstPtr(coll)->ba_element[pos-1]; |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
162 |
RETURN ( __MKSMALLINT(ch) ); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
163 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
164 |
} else if (cls == @global(Unicode16String)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
165 |
if (pos <= __unicode16StringSize(coll)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
166 |
__INST(position) = __MKSMALLINT(__intVal(__INST(position)) + 1); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
167 |
ch = __Unicode16StringInstPtr(coll)->s_element[pos-1]; |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
168 |
RETURN ( __MKUCHARACTER(ch) ); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
169 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
170 |
} else if (cls == @global(Array)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
171 |
if (pos <= __arraySize(coll)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
172 |
__INST(position) = __MKSMALLINT(__intVal(__INST(position)) + 1); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
173 |
RETURN ( __ArrayInstPtr(coll)->a_element[pos-1]); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
174 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
175 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
176 |
} |
1 | 177 |
} |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
178 |
%}. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
179 |
((position + 1 - ZeroPosition) > readLimit) ifTrue:[^ self pastEnd]. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
180 |
ret := collection at:(position + 1 - ZeroPosition). |
1 | 181 |
position := position + 1. |
182 |
^ ret |
|
183 |
! |
|
184 |
||
252 | 185 |
nextAlphaNumericWord |
1 | 186 |
"read the next word (i.e. up to non letter-or-digit). |
187 |
return a string containing those characters. |
|
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
2997
diff
changeset
|
188 |
Skips any non-alphanumeric chars first. |
59 | 189 |
- tuned for speed on String-Streams for faster scanning" |
1 | 190 |
%{ |
191 |
/* speedup, if collection is a string */ |
|
192 |
||
193 |
int pos, limit, sz; |
|
194 |
int len; |
|
13 | 195 |
char buffer[256]; |
196 |
REGISTER unsigned char *cp; |
|
197 |
REGISTER unsigned ch; |
|
252 | 198 |
OBJ coll, p, l; |
1 | 199 |
|
1133 | 200 |
coll = __INST(collection); |
201 |
p = __INST(position); |
|
202 |
l = __INST(readLimit); |
|
252 | 203 |
|
204 |
if (__isString(coll) && __bothSmallInteger(p, l)) { |
|
205 |
||
1133 | 206 |
pos = __intVal(p); |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
207 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
208 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
209 |
|
1133 | 210 |
limit = __intVal(l); |
329 | 211 |
sz = __qSize(coll) - OHDR_SIZE; |
202 | 212 |
if (sz < limit) |
213 |
limit = sz; |
|
1133 | 214 |
cp = __stringVal(coll) + pos - 1; |
1 | 215 |
|
202 | 216 |
for (;;) { |
217 |
if (pos > limit) break; |
|
218 |
ch = *cp; |
|
1 | 219 |
|
3112
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
2997
diff
changeset
|
220 |
if (((ch >= 'a') && (ch <= 'z')) || |
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
2997
diff
changeset
|
221 |
((ch >= 'A') && (ch <= 'Z')) || |
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
2997
diff
changeset
|
222 |
((ch >= '0') && (ch <= '9'))) |
ccf7121ddae8
nextAlphaNumericWord changed
Claus Gittinger <cg@exept.de>
parents:
2997
diff
changeset
|
223 |
break; |
202 | 224 |
cp++; |
225 |
pos++; |
|
226 |
} |
|
1 | 227 |
|
202 | 228 |
len = 0; |
229 |
for (;;) { |
|
230 |
if (pos > limit) break; |
|
231 |
ch = *cp & 0xFF; |
|
1 | 232 |
|
202 | 233 |
if (! (((ch >= 'a') && (ch <= 'z')) || |
234 |
((ch >= 'A') && (ch <= 'Z')) || |
|
235 |
((ch >= '0') && (ch <= '9')))) |
|
236 |
break; |
|
237 |
buffer[len++] = ch; |
|
238 |
if (len >= (sizeof(buffer)-1)) { |
|
239 |
/* emergency */ |
|
240 |
break; |
|
241 |
} |
|
242 |
pos++; |
|
243 |
cp++; |
|
244 |
} |
|
1 | 245 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
246 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
247 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
1133 | 248 |
__INST(position) = __MKSMALLINT(pos); |
202 | 249 |
buffer[len] = '\0'; |
1688
8a42db1eea60
removed all COMMA_CON / CON_COMMA uses
Claus Gittinger <cg@exept.de>
parents:
1665
diff
changeset
|
250 |
RETURN ( (len != 0) ? __MKSTRING_L(buffer, len) : nil ); |
1 | 251 |
} |
252 |
%} |
|
253 |
. |
|
252 | 254 |
^ super nextAlphaNumericWord |
1 | 255 |
! |
256 |
||
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
257 |
nextByte |
4826
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
258 |
"return the next element; advance read pointer. |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
259 |
return nil, if there is no next element. |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
260 |
- tuned for a bit more speed on String/ByteArray/Array-Streams" |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
261 |
|
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
262 |
|ret| |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
263 |
|
4826
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
264 |
%{ /* NOCONTEXT */ |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
265 |
|
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
266 |
REGISTER int pos; |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
267 |
unsigned ch; |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
268 |
OBJ coll, p, l; |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
269 |
|
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
270 |
coll = __INST(collection); |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
271 |
p = __INST(position); |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
272 |
l = __INST(readLimit); |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
273 |
|
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
274 |
if (__isNonNilObject(coll) && __bothSmallInteger(p, l)) { |
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
275 |
|
8098
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
276 |
pos = __intVal(p); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
277 |
/* make 1-based */ |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
278 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
279 |
if (pos > 0 && pos <= __intVal(l)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
280 |
OBJ cls; |
4826
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
281 |
|
8098
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
282 |
cls = __qClass(coll); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
283 |
if (cls == @global(String)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
284 |
if (pos <= __stringSize(coll)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
285 |
__INST(position) = __MKSMALLINT(__intVal(__INST(position)) + 1); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
286 |
ch = __stringVal(coll)[pos-1]; |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
287 |
RETURN ( __MKSMALLINT(ch) ); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
288 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
289 |
} else if (cls == @global(ByteArray)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
290 |
if (pos <= __byteArraySize(coll)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
291 |
__INST(position) = __MKSMALLINT(__intVal(__INST(position)) + 1); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
292 |
ch = __ByteArrayInstPtr(coll)->ba_element[pos-1]; |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
293 |
RETURN ( __MKSMALLINT(ch) ); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
294 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
295 |
} else if (cls == @global(Array)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
296 |
if (pos <= __arraySize(coll)) { |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
297 |
__INST(position) = __MKSMALLINT(__intVal(__INST(position)) + 1); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
298 |
RETURN ( __ArrayInstPtr(coll)->a_element[pos-1]); |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
299 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
300 |
} |
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
301 |
} |
4826
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
302 |
} |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
303 |
%}. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
304 |
((position + 1 - ZeroPosition) > readLimit) ifTrue:[^ self pastEnd]. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
305 |
ret := collection at:(position + 1 -ZeroPosition). |
4826
ff30434f0feb
#nextByte does return an integer, even when operating on a
Claus Gittinger <cg@exept.de>
parents:
4522
diff
changeset
|
306 |
position := position + 1. |
8098
8d1d5cd8529b
nextByte should (at least) return integer when reading from a string-stream
Claus Gittinger <cg@exept.de>
parents:
7483
diff
changeset
|
307 |
^ ret asInteger |
1665
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
308 |
! |
928e9a308cea
added ExternalStream compatibility protocol
Claus Gittinger <cg@exept.de>
parents:
1488
diff
changeset
|
309 |
|
8530
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
310 |
nextBytes:numBytes into:aCollection startingAt:initialIndex |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
311 |
"return the next numBytes from the stream. If the end is |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
312 |
reached before, only that many bytes are copyied into the |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
313 |
collection. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
314 |
Returns the number of bytes that have been actually read. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
315 |
The receiver must support reading of binary bytes. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
316 |
|
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
317 |
Notice: this method is provided here for protocol completeness |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
318 |
with externalStreams - it is normally not used with other |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
319 |
streams." |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
320 |
|
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
321 |
(initialIndex + numBytes - 1) <= aCollection size ifTrue:[ |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
322 |
(position + numBytes - 1) <= readLimit ifTrue:[ |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
323 |
collection class isBytes ifTrue:[ |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
324 |
aCollection class isBytes ifTrue:[ |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
325 |
aCollection |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
326 |
replaceBytesFrom:initialIndex to:(initialIndex + numBytes - 1) |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
327 |
with:collection startingAt:position+1. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
328 |
position := position + numBytes. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
329 |
^ numBytes |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
330 |
]. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
331 |
]. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
332 |
]. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
333 |
]. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
334 |
^ super nextBytes:numBytes into:aCollection startingAt:initialIndex |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
335 |
|
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
336 |
" |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
337 |
|s n buffer| |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
338 |
|
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
339 |
buffer := ByteArray new:10. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
340 |
|
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
341 |
s := ReadStream on:#[1 2 3 4 5 6 7 8 9]. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
342 |
s next:3. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
343 |
n := s nextBytes:9 into:buffer startingAt:1. |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
344 |
Transcript showCR:('n = %1; buffer = <%2>' bindWith:n with:buffer) |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
345 |
" |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
346 |
! |
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
347 |
|
611 | 348 |
nextDecimalInteger |
349 |
"read the next integer in radix 10. dont skip whitespace. |
|
350 |
- tuned for speed on String-Streams for faster scanning" |
|
351 |
||
352 |
|value nextOne| |
|
353 |
%{ |
|
354 |
int pos, limit, sz; |
|
355 |
REGISTER unsigned char *cp; |
|
356 |
REGISTER unsigned ch; |
|
357 |
int val = 0; |
|
358 |
OBJ coll, p, l; |
|
359 |
||
1133 | 360 |
coll = __INST(collection); |
361 |
p = __INST(position); |
|
362 |
l = __INST(readLimit); |
|
611 | 363 |
|
364 |
if (__isString(coll) && __bothSmallInteger(p, l)) { |
|
365 |
||
1133 | 366 |
pos = __intVal(p); |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
367 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
368 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
1133 | 369 |
limit = __intVal(l); |
611 | 370 |
sz = __qSize(coll) - OHDR_SIZE; |
371 |
if (sz < limit) |
|
372 |
limit = sz; |
|
1133 | 373 |
cp = __stringVal(coll) + pos - 1; |
611 | 374 |
|
375 |
for (;;) { |
|
376 |
if (pos > limit) break; |
|
377 |
ch = *cp; |
|
378 |
||
379 |
if ((ch < '0') || (ch > '9')) break; |
|
380 |
val = val * 10 + (ch - '0'); |
|
381 |
pos++; |
|
382 |
if (val > (_MAX_INT / 10)) goto oops; |
|
383 |
cp++; |
|
384 |
} |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
385 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
386 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
1133 | 387 |
__INST(position) = __MKSMALLINT(pos); |
4271
d1878c9dc428
oops - return instead of RETURN macro
Claus Gittinger <cg@exept.de>
parents:
3316
diff
changeset
|
388 |
RETURN (__MKSMALLINT(val)); |
611 | 389 |
} |
390 |
oops: |
|
1133 | 391 |
value = __MKSMALLINT(val); |
611 | 392 |
%} |
393 |
. |
|
394 |
"fall-back for non-string streams - we have to continue where |
|
395 |
above primitive left off, in case of a large integer ... |
|
396 |
(instead of doing a super nextDecimalInteger)" |
|
397 |
||
398 |
nextOne := self peek. |
|
399 |
[nextOne notNil and:[nextOne isDigitRadix:10]] whileTrue:[ |
|
400 |
value = (value * 10) + nextOne digitValue. |
|
401 |
nextOne := self nextPeek |
|
402 |
]. |
|
403 |
^ value |
|
404 |
! |
|
405 |
||
406 |
nextPeek |
|
407 |
"advance read pointer return the peek element. |
|
408 |
this is equivalent to (self next; peek). |
|
409 |
- tuned for speed on String-Streams for faster scanning" |
|
410 |
||
411 |
%{ /* NOCONTEXT */ |
|
412 |
OBJ coll, l, p; |
|
413 |
||
1133 | 414 |
coll = __INST(collection); |
415 |
p = __INST(position); |
|
416 |
l = __INST(readLimit); |
|
611 | 417 |
|
418 |
if (__isString(coll) && __bothSmallInteger(p, l)) { |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
419 |
REGISTER int pos; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
420 |
unsigned ch; |
611 | 421 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
422 |
pos = __intVal(p); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
423 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
424 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
425 |
if ((pos > 0) && (pos < __intVal(l)) && (pos < __stringSize(coll))) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
426 |
pos = pos + 1; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
427 |
ch = __stringVal(coll)[pos-1]; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
428 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
429 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
430 |
__INST(position) = __MKSMALLINT(pos); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
431 |
RETURN ( __MKCHARACTER(ch) ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
432 |
} |
611 | 433 |
} |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
434 |
%}. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
435 |
((position + 1 - ZeroPosition) > readLimit) ifTrue:[^ self pastEnd]. |
611 | 436 |
position := position + 1. |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
437 |
((position + 1 - ZeroPosition) > readLimit) ifTrue:[^ self pastEnd]. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
438 |
^ collection at:(position + 1 - ZeroPosition) |
611 | 439 |
! |
440 |
||
1 | 441 |
nextSymbol |
442 |
"read the next selector-symbol (i.e. up to non letter-or-digit). |
|
443 |
return a string containing those characters. |
|
59 | 444 |
- tuned for speed on String-Streams for faster scanning" |
1 | 445 |
%{ |
446 |
int pos, limit, sz; |
|
447 |
int len; |
|
13 | 448 |
char buffer[256]; |
449 |
REGISTER unsigned char *cp; |
|
450 |
REGISTER unsigned ch; |
|
252 | 451 |
OBJ coll, p, l; |
1 | 452 |
|
1133 | 453 |
coll = __INST(collection); |
454 |
p = __INST(position); |
|
455 |
l = __INST(readLimit); |
|
252 | 456 |
|
457 |
if (__isString(coll) && __bothSmallInteger(p, l)) { |
|
458 |
||
1133 | 459 |
pos = __intVal(p); |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
460 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
461 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
1133 | 462 |
limit = __intVal(l); |
329 | 463 |
sz = __qSize(coll) - OHDR_SIZE; |
202 | 464 |
if (sz < limit) |
465 |
limit = sz; |
|
1133 | 466 |
cp = __stringVal(coll) + pos - 1; |
1 | 467 |
|
202 | 468 |
len = 0; |
469 |
for (;;) { |
|
470 |
if (pos > limit) break; |
|
471 |
ch = *cp; |
|
1 | 472 |
|
202 | 473 |
if (! (((ch >= 'a') && (ch <= 'z')) || |
474 |
((ch >= 'A') && (ch <= 'Z')) || |
|
475 |
((ch >= '0') && (ch <= '9')) || |
|
476 |
(ch == ':'))) |
|
477 |
break; |
|
478 |
buffer[len++] = ch; |
|
479 |
if (len >= (sizeof(buffer)-1)) { |
|
480 |
/* emergency */ |
|
481 |
break; |
|
482 |
} |
|
483 |
pos++; |
|
484 |
cp++; |
|
485 |
} |
|
1 | 486 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
487 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
488 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
1133 | 489 |
__INST(position) = __MKSMALLINT(pos); |
202 | 490 |
buffer[len] = '\0'; |
1688
8a42db1eea60
removed all COMMA_CON / CON_COMMA uses
Claus Gittinger <cg@exept.de>
parents:
1665
diff
changeset
|
491 |
RETURN ( (len != 0) ? __MKSTRING_L(buffer, len) : nil ); |
1 | 492 |
} |
493 |
%} |
|
494 |
. |
|
495 |
^ super nextSymbol |
|
496 |
! |
|
497 |
||
611 | 498 |
peek |
499 |
"return the next element; do NOT advance read pointer. |
|
500 |
return nil, if there is no next element. |
|
501 |
- tuned for a bit more speed on String/ByteArray/Array-Streams" |
|
1 | 502 |
|
503 |
%{ /* NOCONTEXT */ |
|
611 | 504 |
|
505 |
REGISTER int pos; |
|
506 |
unsigned ch; |
|
507 |
OBJ coll; |
|
508 |
OBJ cls, p, l; |
|
1 | 509 |
|
1133 | 510 |
coll = __INST(collection); |
511 |
p = __INST(position); |
|
512 |
l = __INST(readLimit); |
|
252 | 513 |
|
611 | 514 |
if (__isNonNilObject(coll) && __bothSmallInteger(p, l)) { |
1 | 515 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
516 |
pos = __intVal(p); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
517 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
518 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
519 |
if (pos <= __intVal(l) && pos > 0) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
520 |
cls = __qClass(coll); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
521 |
if (cls == @global(String)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
522 |
if (pos <= __stringSize(coll)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
523 |
ch = __stringVal(coll)[pos-1]; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
524 |
RETURN ( __MKCHARACTER(ch) ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
525 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
526 |
} else if (cls == @global(ByteArray)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
527 |
if (pos <= __byteArraySize(coll)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
528 |
ch = __ByteArrayInstPtr(coll)->ba_element[pos-1]; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
529 |
RETURN ( __MKSMALLINT(ch) ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
530 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
531 |
} else if (cls == @global(Array)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
532 |
if (pos <= __arraySize(coll)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
533 |
RETURN ( __ArrayInstPtr(coll)->a_element[pos-1]); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
534 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
535 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
536 |
} |
1 | 537 |
} |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
538 |
%}. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
539 |
((position + 1 - ZeroPosition) > readLimit) ifTrue:[^ self pastEnd]. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
540 |
^ collection at:(position + 1 - ZeroPosition) |
1 | 541 |
! |
542 |
||
3316 | 543 |
peekOrNil |
544 |
"return the next element; do NOT advance read pointer. |
|
545 |
return nil, if there is no next element. |
|
546 |
This is much like #peek - |
|
547 |
However, unlike #peek, this does not raise an atEnd-query signal - even |
|
548 |
if handled. Instead, nil is returned immediately." |
|
549 |
||
550 |
%{ /* NOCONTEXT */ |
|
551 |
||
552 |
REGISTER int pos; |
|
553 |
unsigned ch; |
|
554 |
OBJ coll; |
|
555 |
OBJ cls, p, l; |
|
556 |
||
557 |
coll = __INST(collection); |
|
558 |
p = __INST(position); |
|
559 |
l = __INST(readLimit); |
|
560 |
||
561 |
if (__isNonNilObject(coll) && __bothSmallInteger(p, l)) { |
|
562 |
||
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
563 |
pos = __intVal(p); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
564 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
565 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
566 |
if (pos <= __intVal(l) && pos > 0) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
567 |
cls = __qClass(coll); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
568 |
if (cls == @global(String)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
569 |
if (pos <= __stringSize(coll)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
570 |
ch = __stringVal(coll)[pos-1]; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
571 |
RETURN ( __MKCHARACTER(ch) ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
572 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
573 |
RETURN ( nil ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
574 |
} else if (cls == @global(ByteArray)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
575 |
if (pos <= __byteArraySize(coll)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
576 |
ch = __ByteArrayInstPtr(coll)->ba_element[pos-1]; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
577 |
RETURN ( __MKSMALLINT(ch) ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
578 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
579 |
RETURN ( nil ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
580 |
} else if (cls == @global(Array)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
581 |
if (pos <= __arraySize(coll)) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
582 |
RETURN ( __ArrayInstPtr(coll)->a_element[pos-1]); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
583 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
584 |
RETURN ( nil ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
585 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
586 |
} |
3316 | 587 |
} |
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
588 |
%}. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
589 |
((position + 1 - ZeroPosition) > readLimit) ifTrue:[^ nil]. |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
590 |
^ collection at:(position + 1 - ZeroPosition) |
3316 | 591 |
! |
592 |
||
1 | 593 |
skipSeparators |
594 |
"skip all whitespace; next will return next non-white-space element. |
|
59 | 595 |
Return the peeked character or nil, if the end-of-stream was reached. |
2 | 596 |
- reimplemented for speed on String-Streams for faster scanning" |
1 | 597 |
|
598 |
%{ /* NOCONTEXT */ |
|
252 | 599 |
OBJ coll, p, l; |
1 | 600 |
|
1133 | 601 |
coll = __INST(collection); |
602 |
p = __INST(position); |
|
603 |
l = __INST(readLimit); |
|
252 | 604 |
|
605 |
if (__isString(coll) && __bothSmallInteger(p, l)) { |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
606 |
REGISTER unsigned char *chars; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
607 |
REGISTER unsigned ch; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
608 |
REGISTER int pos; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
609 |
int limit; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
610 |
int sz; |
1 | 611 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
612 |
pos = __intVal(p); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
613 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
614 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
615 |
if (pos <= 0) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
616 |
RETURN ( nil ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
617 |
} |
1 | 618 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
619 |
limit = __intVal(l); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
620 |
sz = __qSize(coll) - OHDR_SIZE; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
621 |
if (limit > sz) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
622 |
limit = sz; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
623 |
} |
1 | 624 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
625 |
chars = (unsigned char *)(__stringVal(coll) + pos - 1); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
626 |
while (pos <= limit) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
627 |
pos++; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
628 |
ch = *chars++; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
629 |
if ((ch > 0x20) |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
630 |
|| ((ch != ' ') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
631 |
&& (ch != '\t') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
632 |
&& (ch != '\r') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
633 |
&& (ch != '\n') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
634 |
&& (ch != '\f') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
635 |
&& (ch != 0x0B))) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
636 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
637 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
638 |
__INST(position) = __MKSMALLINT(pos-1); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
639 |
RETURN ( __MKCHARACTER(ch) ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
640 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
641 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
642 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
643 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
644 |
__INST(position) = __MKSMALLINT(pos); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
645 |
RETURN ( nil ); |
1 | 646 |
} |
1406 | 647 |
%}. |
1 | 648 |
^ super skipSeparators |
1406 | 649 |
|
650 |
" |
|
651 |
|s| |
|
652 |
||
653 |
s := ' hello world ' readStream. |
|
654 |
s skipSeparators. |
|
655 |
s next. |
|
656 |
" |
|
1 | 657 |
! |
658 |
||
13 | 659 |
skipSeparatorsExceptCR |
660 |
"skip all whitespace except newlines; |
|
202 | 661 |
next will return next non-white-space element. |
662 |
- reimplemented for speed on String-Streams for faster scanning" |
|
663 |
||
13 | 664 |
%{ /* NOCONTEXT */ |
665 |
||
252 | 666 |
OBJ coll, p, l; |
667 |
||
1133 | 668 |
coll = __INST(collection); |
669 |
p = __INST(position); |
|
670 |
l = __INST(readLimit); |
|
252 | 671 |
|
672 |
if (__isString(coll) && __bothSmallInteger(p, l)) { |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
673 |
REGISTER unsigned char *chars; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
674 |
REGISTER unsigned ch; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
675 |
REGISTER int pos; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
676 |
int limit; |
13 | 677 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
678 |
pos = __intVal(p); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
679 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
680 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
681 |
if (pos <= 0) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
682 |
RETURN ( nil ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
683 |
} |
2162
7e1601f633b6
ff is a separator too (in #skipSeparators*)
Claus Gittinger <cg@exept.de>
parents:
1688
diff
changeset
|
684 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
685 |
limit = __intVal(l); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
686 |
if (limit > (__qSize(coll) - OHDR_SIZE)) |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
687 |
limit = __qSize(coll) - OHDR_SIZE; |
13 | 688 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
689 |
chars = (unsigned char *)(__stringVal(coll) + pos - 1); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
690 |
while (pos <= limit) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
691 |
ch = *chars++; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
692 |
if (((int)ch > 0x20) |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
693 |
|| ( |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
694 |
(ch != ' ') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
695 |
&& (ch != '\t') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
696 |
&& (ch != '\f') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
697 |
&& (ch != '\b') |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
698 |
&& (ch != 0x0B))) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
699 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
700 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
701 |
__INST(position) = __MKSMALLINT(pos); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
702 |
RETURN ( __MKCHARACTER(ch) ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
703 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
704 |
pos++; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
705 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
706 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
707 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
708 |
__INST(position) = __MKSMALLINT(pos); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
709 |
RETURN ( nil ); |
13 | 710 |
} |
711 |
%} |
|
712 |
. |
|
713 |
^ super skipSeparatorsExceptCR |
|
714 |
! |
|
715 |
||
611 | 716 |
skipThrough:anObject |
6011
3b91d7834ca5
fixed: skipThrough dod not position atEnd if the element was not found.
Claus Gittinger <cg@exept.de>
parents:
5810
diff
changeset
|
717 |
"skip all objects up-to and including anObject. |
3b91d7834ca5
fixed: skipThrough dod not position atEnd if the element was not found.
Claus Gittinger <cg@exept.de>
parents:
5810
diff
changeset
|
718 |
Return the receiver if skip was successful, |
3b91d7834ca5
fixed: skipThrough dod not position atEnd if the element was not found.
Claus Gittinger <cg@exept.de>
parents:
5810
diff
changeset
|
719 |
otherwise (i.e. if not found) return nil and leave the stream positioned at the end. |
611 | 720 |
On success, the next read operation will return the element after anObject. |
721 |
- reimplemented for speed on String-Streams for faster scanning" |
|
722 |
||
723 |
%{ /* NOCONTEXT */ |
|
724 |
OBJ coll, p, l; |
|
725 |
||
1133 | 726 |
coll = __INST(collection); |
727 |
p = __INST(position); |
|
728 |
l = __INST(readLimit); |
|
611 | 729 |
|
730 |
if (__isString(coll) |
|
731 |
&& __isCharacter(anObject) |
|
732 |
&& __bothSmallInteger(p, l)) { |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
733 |
REGISTER unsigned char *chars; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
734 |
REGISTER int pos, limit; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
735 |
unsigned ch; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
736 |
int sz; |
611 | 737 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
738 |
pos = __intVal(p); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
739 |
/* make 1-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
740 |
pos = pos + 1 - __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
741 |
if (pos <= 0) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
742 |
RETURN ( nil ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
743 |
} |
611 | 744 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
745 |
limit = __intVal(l); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
746 |
sz = __stringSize(coll); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
747 |
if (limit > sz) limit = sz; |
611 | 748 |
|
7051
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
749 |
chars = (unsigned char *)(__stringVal(coll) + pos - 1); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
750 |
ch = __intVal(_characterVal(anObject)) & 0xFF; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
751 |
while (pos < limit) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
752 |
if (*chars == ch) { |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
753 |
ch = *++chars; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
754 |
pos++; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
755 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
756 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
757 |
__INST(position) = __MKSMALLINT(pos); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
758 |
RETURN ( self ); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
759 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
760 |
chars++; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
761 |
pos++; |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
762 |
} |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
763 |
/* make ZeroPosition-based */ |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
764 |
pos = pos - 1 + __intVal( @global(PositionableStream:ZeroPosition)); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
765 |
__INST(position) = __MKSMALLINT(pos+1); |
984d8271d06b
preps for 0-based stream positions
Claus Gittinger <cg@exept.de>
parents:
6814
diff
changeset
|
766 |
RETURN ( nil ); |
611 | 767 |
} |
6011
3b91d7834ca5
fixed: skipThrough dod not position atEnd if the element was not found.
Claus Gittinger <cg@exept.de>
parents:
5810
diff
changeset
|
768 |
%}. |
611 | 769 |
^ super skipThrough:anObject |
1 | 770 |
! ! |
771 |
||
59 | 772 |
!ReadStream methodsFor:'writing'! |
1 | 773 |
|
774 |
nextPut:anElement |
|
10 | 775 |
"catch write access to readstreams - report an error" |
776 |
||
777 |
self shouldNotImplement |
|
1 | 778 |
! ! |
611 | 779 |
|
2162
7e1601f633b6
ff is a separator too (in #skipSeparators*)
Claus Gittinger <cg@exept.de>
parents:
1688
diff
changeset
|
780 |
!ReadStream class methodsFor:'documentation'! |
701 | 781 |
|
782 |
version |
|
8530
edcadeea17a1
tuned reading long strings & byteArrays from byteArray streams.
Claus Gittinger <cg@exept.de>
parents:
8140
diff
changeset
|
783 |
^ '$Header: /cvs/stx/stx/libbasic/ReadStream.st,v 1.51 2004-09-10 11:16:19 cg Exp $' |
701 | 784 |
! ! |