File: tst-regex2.c

package info (click to toggle)
glibc 2.28-8
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, experimental, sid
  • size: 271,788 kB
  • sloc: ansic: 1,008,637; asm: 259,607; makefile: 11,271; sh: 10,477; python: 6,910; cpp: 4,992; perl: 2,258; awk: 2,005; yacc: 290; pascal: 182; sed: 73
file content (249 lines) | stat: -rw-r--r-- 5,594 bytes parent folder | download | duplicates (4)
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
#include <fcntl.h>
#include <locale.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>

#if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
static clockid_t cl;
static int use_clock;
#endif

static int
do_test (void)
{
#if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
# if _POSIX_CPUTIME == 0
  if (sysconf (_SC_CPUTIME) < 0)
    use_clock = 0;
  else
# endif
    /* See whether we can use the CPU clock.  */
    use_clock = clock_getcpuclockid (0, &cl) == 0;
#endif

  static const char *pat[] = {
    ".?.?.?.?.?.?.?Log\\.13",
    "(.?)(.?)(.?)(.?)(.?)(.?)(.?)Log\\.13",
    "((((((((((.?))))))))))((((((((((.?))))))))))((((((((((.?))))))))))"
    "((((((((((.?))))))))))((((((((((.?))))))))))((((((((((.?))))))))))"
    "((((((((((.?))))))))))Log\\.13" };

  int fd = open ("../ChangeLog.old/ChangeLog.14", O_RDONLY);
  if (fd < 0)
    {
      printf ("Couldn't open ChangeLog.14: %m\n");
      return 1;
    }

  struct stat64 st;
  if (fstat64 (fd, &st) < 0)
    {
      printf ("Couldn't fstat ChangeLog.14: %m\n");
      return 1;
    }

  char *buf = malloc (st.st_size + 1);
  if (buf == NULL)
    {
      printf ("Couldn't allocate buffer: %m\n");
      return 1;
    }

  if (read (fd, buf, st.st_size) != (ssize_t) st.st_size)
    {
      puts ("Couldn't read ChangeLog.14");
      return 1;
    }

  close (fd);
  buf[st.st_size] = '\0';

  setlocale (LC_ALL, "de_DE.UTF-8");

  char *string = buf;
  size_t len = st.st_size;

#ifndef WHOLE_FILE_TIMING
  /* Don't search the whole file normally, it takes too long.  */
  if (len > 500000 + 64)
    {
      string += 500000;
      len -= 500000;
    }
#endif

  for (int testno = 0; testno < 4; ++testno)
    for (int i = 0; i < sizeof (pat) / sizeof (pat[0]); ++i)
      {
	printf ("test %d pattern %d", testno, i);

	regex_t rbuf;
	struct re_pattern_buffer rpbuf;
	int err;
	if (testno < 2)
	  {
	    err = regcomp (&rbuf, pat[i],
			   REG_EXTENDED | (testno ? REG_NOSUB : 0));
	    if (err != 0)
	      {
		putchar ('\n');
		char errstr[300];
		regerror (err, &rbuf, errstr, sizeof (errstr));
		puts (errstr);
		return err;
	      }
	  }
	else
	  {
	    re_set_syntax (RE_SYNTAX_POSIX_EGREP
			   | (testno == 3 ? RE_NO_SUB : 0));

	    memset (&rpbuf, 0, sizeof (rpbuf));
	    const char *s = re_compile_pattern (pat[i], strlen (pat[i]),
						&rpbuf);
	    if (s != NULL)
	      {
		printf ("\n%s\n", s);
		return 1;
	      }

	    /* Just so that this can be tested with earlier glibc as well.  */
	    if (testno == 3)
	      rpbuf.no_sub = 1;
	  }

#if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
      struct timespec start, stop;
      if (use_clock)
	use_clock = clock_gettime (cl, &start) == 0;
#endif

      if (testno < 2)
	{
	  regmatch_t pmatch[71];
	  err = regexec (&rbuf, string, 71, pmatch, 0);
	  if (err == REG_NOMATCH)
	    {
	      puts ("\nregexec failed");
	      return 1;
	    }

	  if (testno == 0)
	    {
	      if (pmatch[0].rm_eo != pmatch[0].rm_so + 13
		  || pmatch[0].rm_eo > len
		  || pmatch[0].rm_so < len - 100
		  || strncmp (string + pmatch[0].rm_so,
			      " ChangeLog.13 for earlier changes",
			      sizeof " ChangeLog.13 for earlier changes" - 1)
		     != 0)
		{
		  puts ("\nregexec without REG_NOSUB did not find the correct match");
		  return 1;
		}

	      if (i > 0)
		for (int j = 0, l = 1; j < 7; ++j)
		  for (int k = 0; k < (i == 1 ? 1 : 10); ++k, ++l)
		    if (pmatch[l].rm_so != pmatch[0].rm_so + j
			|| pmatch[l].rm_eo != pmatch[l].rm_so + 1)
		      {
			printf ("\npmatch[%d] incorrect\n", l);
			return 1;
		      }
	    }
	}
      else
	{
	  struct re_registers regs;

	  memset (&regs, 0, sizeof (regs));
	  int match = re_search (&rpbuf, string, len, 0, len,
				 &regs);
	  if (match < 0)
	    {
	      puts ("\nre_search failed");
	      return 1;
	    }

	  if (match + 13 > len
	      || match < len - 100
	      || strncmp (string + match,
			  " ChangeLog.13 for earlier changes",
			  sizeof " ChangeLog.13 for earlier changes" - 1)
		  != 0)
	    {
	      puts ("\nre_search did not find the correct match");
	      return 1;
	    }

	  if (testno == 2)
	    {
	      if (regs.num_regs != 2 + (i == 0 ? 0 : i == 1 ? 7 : 70))
		{
		  printf ("\nincorrect num_regs %d\n", regs.num_regs);
		  return 1;
		}

	      if (regs.start[0] != match || regs.end[0] != match + 13)
		{
		  printf ("\nincorrect regs.{start,end}[0] = { %d, %d}\n",
			  regs.start[0], regs.end[0]);
		  return 1;
		}

	      if (regs.start[regs.num_regs - 1] != -1
		  || regs.end[regs.num_regs - 1] != -1)
		{
		  puts ("\nincorrect regs.{start,end}[num_regs - 1]");
		  return 1;
		}

	      if (i > 0)
		for (int j = 0, l = 1; j < 7; ++j)
		  for (int k = 0; k < (i == 1 ? 1 : 10); ++k, ++l)
		    if (regs.start[l] != match + j
			|| regs.end[l] != regs.start[l] + 1)
		      {
			printf ("\nregs.{start,end}[%d] incorrect\n", l);
			return 1;
		      }
	    }
	}

#if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
      if (use_clock)
	use_clock = clock_gettime (cl, &stop) == 0;
      if (use_clock)
	{
	  stop.tv_sec -= start.tv_sec;
	  if (stop.tv_nsec < start.tv_nsec)
	    {
	      stop.tv_sec--;
	      stop.tv_nsec += 1000000000 - start.tv_nsec;
	    }
	  else
	    stop.tv_nsec -= start.tv_nsec;
	  printf (": %ld.%09lds\n", (long) stop.tv_sec, (long) stop.tv_nsec);
	}
      else
#endif
	putchar ('\n');

      if (testno < 2)
	regfree (&rbuf);
      else
	regfree (&rpbuf);
    }

  return 0;
}

#define TIMEOUT 20
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"