File: match-split.html

package info (click to toggle)
docbook-dsssl-doc 1.79-7
  • links: PTS
  • area: main
  • in suites: bookworm, bullseye, sid, trixie
  • size: 3,724 kB
  • sloc: makefile: 2
file content (263 lines) | stat: -rw-r--r-- 4,036 bytes parent folder | download | duplicates (5)
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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>match-split</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="DSSSL Library Reference"
HREF="index.html"><LINK
REL="UP"
TITLE="Miscellaneous"
HREF="r300.htm"><LINK
REL="PREVIOUS"
TITLE="pad-string"
HREF="pad-string.html"><LINK
REL="NEXT"
TITLE="match-split-string-list"
HREF="match-split-string-list.html"></HEAD
><BODY
CLASS="REFENTRY"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>DSSSL Library Reference: Part of the Modular DocBook Stylesheet distribution</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="pad-string.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="match-split-string-list.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="MATCH-SPLIT"
></A
>match-split</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN481"
></A
><H2
>Name</H2
>match-split&nbsp;--&nbsp;Splits string at target and returns the resulting list of tokens</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN484"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>(match-split string target)</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN487"
></A
><H2
>Description</H2
><P
>Splits string at every occurance of target and returns the result
as a list.  Note that <TT
CLASS="LITERAL"
>match-split</TT
> returns the occurances of <TT
CLASS="LITERAL"
>target</TT
>
in the list of tokens.</P
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="LITERAL"
>string</TT
></DT
><DD
><P
>The string to split.</P
></DD
><DT
><TT
CLASS="LITERAL"
>target</TT
></DT
><DD
><P
>The string which is a delimiter between tokens</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN503"
></A
><H2
>Example</H2
><P
><TT
CLASS="LITERAL"
>"this is a test"</TT
> split at <TT
CLASS="LITERAL"
>"is"</TT
> returns
<TT
CLASS="LITERAL"
>("th" "is" " " "is" " a test")</TT
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN509"
></A
><H2
>Author</H2
><P
>Norman Walsh, &lt;ndw@nwalsh.com&gt;</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN512"
></A
><H2
>Source Code</H2
><PRE
CLASS="PROGRAMLISTING"
>(define (match-split string target)
  ;; Splits string at target and returns the resulting list of tokens
  (if (string? string)
      (let loop ((result '()) (current "") (rest string))
	(if (&#60; (string-length rest) (string-length target))
	    (append result (if (equal? (string-append current rest) "")
			       '()
			       (list (string-append current rest))))
	    (if (equal? target (substring rest 0 (string-length target)))
		(loop (append result 
			      (if (equal? current "")
				  '()
				  (list current))
			      (list target))
		      ""
		      (substring rest (string-length target) 
				 (string-length rest)))
		(loop result
		      (string-append current (substring rest 0 1))
		      (substring rest 1 (string-length rest))))))
      (list string)))</PRE
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="pad-string.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="match-split-string-list.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>pad-string</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="r300.htm"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>match-split-string-list</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>