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-rw-r--r--src/regress/lib/libc/regex/split.c317
1 files changed, 317 insertions, 0 deletions
diff --git a/src/regress/lib/libc/regex/split.c b/src/regress/lib/libc/regex/split.c
new file mode 100644
index 0000000000..fcd81a3503
--- /dev/null
+++ b/src/regress/lib/libc/regex/split.c
@@ -0,0 +1,317 @@
1/* $OpenBSD: split.c,v 1.5 2007/09/09 23:25:12 chl Exp $ */
2/* $NetBSD: split.c,v 1.2 1995/04/20 22:39:57 cgd Exp $ */
3
4#include <stdio.h>
5#include <string.h>
6
7int split(char *string, char *fields[], int nfields, char *sep);
8
9/*
10 - split - divide a string into fields, like awk split()
11 = int split(char *string, char *fields[], int nfields, char *sep);
12 */
13int /* number of fields, including overflow */
14split(char *string, char *fields[], int nfields, char *sep)
15{
16 register char *p = string;
17 register char c; /* latest character */
18 register char sepc = sep[0];
19 register char sepc2;
20 register int fn;
21 register char **fp = fields;
22 register char *sepp;
23 register int trimtrail;
24
25 /* white space */
26 if (sepc == '\0') {
27 while ((c = *p++) == ' ' || c == '\t')
28 continue;
29 p--;
30 trimtrail = 1;
31 sep = " \t"; /* note, code below knows this is 2 long */
32 sepc = ' ';
33 } else
34 trimtrail = 0;
35 sepc2 = sep[1]; /* now we can safely pick this up */
36
37 /* catch empties */
38 if (*p == '\0')
39 return(0);
40
41 /* single separator */
42 if (sepc2 == '\0') {
43 fn = nfields;
44 for (;;) {
45 *fp++ = p;
46 fn--;
47 if (fn == 0)
48 break;
49 while ((c = *p++) != sepc)
50 if (c == '\0')
51 return(nfields - fn);
52 *(p-1) = '\0';
53 }
54 /* we have overflowed the fields vector -- just count them */
55 fn = nfields;
56 for (;;) {
57 while ((c = *p++) != sepc)
58 if (c == '\0')
59 return(fn);
60 fn++;
61 }
62 /* not reached */
63 }
64
65 /* two separators */
66 if (sep[2] == '\0') {
67 fn = nfields;
68 for (;;) {
69 *fp++ = p;
70 fn--;
71 while ((c = *p++) != sepc && c != sepc2)
72 if (c == '\0') {
73 if (trimtrail && **(fp-1) == '\0')
74 fn++;
75 return(nfields - fn);
76 }
77 if (fn == 0)
78 break;
79 *(p-1) = '\0';
80 while ((c = *p++) == sepc || c == sepc2)
81 continue;
82 p--;
83 }
84 /* we have overflowed the fields vector -- just count them */
85 fn = nfields;
86 while (c != '\0') {
87 while ((c = *p++) == sepc || c == sepc2)
88 continue;
89 p--;
90 fn++;
91 while ((c = *p++) != '\0' && c != sepc && c != sepc2)
92 continue;
93 }
94 /* might have to trim trailing white space */
95 if (trimtrail) {
96 p--;
97 while ((c = *--p) == sepc || c == sepc2)
98 continue;
99 p++;
100 if (*p != '\0') {
101 if (fn == nfields+1)
102 *p = '\0';
103 fn--;
104 }
105 }
106 return(fn);
107 }
108
109 /* n separators */
110 fn = 0;
111 for (;;) {
112 if (fn < nfields)
113 *fp++ = p;
114 fn++;
115 for (;;) {
116 c = *p++;
117 if (c == '\0')
118 return(fn);
119 sepp = sep;
120 while ((sepc = *sepp++) != '\0' && sepc != c)
121 continue;
122 if (sepc != '\0') /* it was a separator */
123 break;
124 }
125 if (fn < nfields)
126 *(p-1) = '\0';
127 for (;;) {
128 c = *p++;
129 sepp = sep;
130 while ((sepc = *sepp++) != '\0' && sepc != c)
131 continue;
132 if (sepc == '\0') /* it wasn't a separator */
133 break;
134 }
135 p--;
136 }
137
138 /* not reached */
139}
140
141#ifdef TEST_SPLIT
142
143
144/*
145 * test program
146 * pgm runs regression
147 * pgm sep splits stdin lines by sep
148 * pgm str sep splits str by sep
149 * pgm str sep n splits str by sep n times
150 */
151int
152main(argc, argv)
153int argc;
154char *argv[];
155{
156 char buf[512];
157 register int n;
158# define MNF 10
159 char *fields[MNF];
160
161 if (argc > 4)
162 for (n = atoi(argv[3]); n > 0; n--) {
163 (void) strlcpy(buf, argv[1], sizeof buf);
164 }
165 else if (argc > 3)
166 for (n = atoi(argv[3]); n > 0; n--) {
167 (void) strlcpy(buf, argv[1], sizeof buf);
168 (void) split(buf, fields, MNF, argv[2]);
169 }
170 else if (argc > 2)
171 dosplit(argv[1], argv[2]);
172 else if (argc > 1)
173 while (fgets(buf, sizeof(buf), stdin) != NULL) {
174 buf[strcspn(buf, "\n")] = '\0'; /* stomp newline */
175 dosplit(buf, argv[1]);
176 }
177 else
178 regress();
179
180 exit(0);
181}
182
183dosplit(string, seps)
184char *string;
185char *seps;
186{
187# define NF 5
188 char *fields[NF];
189 register int nf;
190
191 nf = split(string, fields, NF, seps);
192 print(nf, NF, fields);
193}
194
195print(nf, nfp, fields)
196int nf;
197int nfp;
198char *fields[];
199{
200 register int fn;
201 register int bound;
202
203 bound = (nf > nfp) ? nfp : nf;
204 printf("%d:\t", nf);
205 for (fn = 0; fn < bound; fn++)
206 printf("\"%s\"%s", fields[fn], (fn+1 < nf) ? ", " : "\n");
207}
208
209#define RNF 5 /* some table entries know this */
210struct {
211 char *str;
212 char *seps;
213 int nf;
214 char *fi[RNF];
215} tests[] = {
216 "", " ", 0, { "" },
217 " ", " ", 2, { "", "" },
218 "x", " ", 1, { "x" },
219 "xy", " ", 1, { "xy" },
220 "x y", " ", 2, { "x", "y" },
221 "abc def g ", " ", 5, { "abc", "def", "", "g", "" },
222 " a bcd", " ", 4, { "", "", "a", "bcd" },
223 "a b c d e f", " ", 6, { "a", "b", "c", "d", "e f" },
224 " a b c d ", " ", 6, { "", "a", "b", "c", "d " },
225
226 "", " _", 0, { "" },
227 " ", " _", 2, { "", "" },
228 "x", " _", 1, { "x" },
229 "x y", " _", 2, { "x", "y" },
230 "ab _ cd", " _", 2, { "ab", "cd" },
231 " a_b c ", " _", 5, { "", "a", "b", "c", "" },
232 "a b c_d e f", " _", 6, { "a", "b", "c", "d", "e f" },
233 " a b c d ", " _", 6, { "", "a", "b", "c", "d " },
234
235 "", " _~", 0, { "" },
236 " ", " _~", 2, { "", "" },
237 "x", " _~", 1, { "x" },
238 "x y", " _~", 2, { "x", "y" },
239 "ab _~ cd", " _~", 2, { "ab", "cd" },
240 " a_b c~", " _~", 5, { "", "a", "b", "c", "" },
241 "a b_c d~e f", " _~", 6, { "a", "b", "c", "d", "e f" },
242 "~a b c d ", " _~", 6, { "", "a", "b", "c", "d " },
243
244 "", " _~-", 0, { "" },
245 " ", " _~-", 2, { "", "" },
246 "x", " _~-", 1, { "x" },
247 "x y", " _~-", 2, { "x", "y" },
248 "ab _~- cd", " _~-", 2, { "ab", "cd" },
249 " a_b c~", " _~-", 5, { "", "a", "b", "c", "" },
250 "a b_c-d~e f", " _~-", 6, { "a", "b", "c", "d", "e f" },
251 "~a-b c d ", " _~-", 6, { "", "a", "b", "c", "d " },
252
253 "", " ", 0, { "" },
254 " ", " ", 2, { "", "" },
255 "x", " ", 1, { "x" },
256 "xy", " ", 1, { "xy" },
257 "x y", " ", 2, { "x", "y" },
258 "abc def g ", " ", 4, { "abc", "def", "g", "" },
259 " a bcd", " ", 3, { "", "a", "bcd" },
260 "a b c d e f", " ", 6, { "a", "b", "c", "d", "e f" },
261 " a b c d ", " ", 6, { "", "a", "b", "c", "d " },
262
263 "", "", 0, { "" },
264 " ", "", 0, { "" },
265 "x", "", 1, { "x" },
266 "xy", "", 1, { "xy" },
267 "x y", "", 2, { "x", "y" },
268 "abc def g ", "", 3, { "abc", "def", "g" },
269 "\t a bcd", "", 2, { "a", "bcd" },
270 " a \tb\t c ", "", 3, { "a", "b", "c" },
271 "a b c d e ", "", 5, { "a", "b", "c", "d", "e" },
272 "a b\tc d e f", "", 6, { "a", "b", "c", "d", "e f" },
273 " a b c d e f ", "", 6, { "a", "b", "c", "d", "e f " },
274
275 NULL, NULL, 0, { NULL },
276};
277
278regress()
279{
280 char buf[512];
281 register int n;
282 char *fields[RNF+1];
283 register int nf;
284 register int i;
285 register int printit;
286 register char *f;
287
288 for (n = 0; tests[n].str != NULL; n++) {
289 (void) strlcpy(buf, tests[n].str, sizeof buf);
290 fields[RNF] = NULL;
291 nf = split(buf, fields, RNF, tests[n].seps);
292 printit = 0;
293 if (nf != tests[n].nf) {
294 printf("split `%s' by `%s' gave %d fields, not %d\n",
295 tests[n].str, tests[n].seps, nf, tests[n].nf);
296 printit = 1;
297 } else if (fields[RNF] != NULL) {
298 printf("split() went beyond array end\n");
299 printit = 1;
300 } else {
301 for (i = 0; i < nf && i < RNF; i++) {
302 f = fields[i];
303 if (f == NULL)
304 f = "(NULL)";
305 if (strcmp(f, tests[n].fi[i]) != 0) {
306 printf("split `%s' by `%s', field %d is `%s', not `%s'\n",
307 tests[n].str, tests[n].seps,
308 i, fields[i], tests[n].fi[i]);
309 printit = 1;
310 }
311 }
312 }
313 if (printit)
314 print(nf, RNF, fields);
315 }
316}
317#endif
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