posix/tst-regex2.c

   1 #include <fcntl.h>
   2 #include <locale.h>
   3 #include <regex.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <sys/stat.h>
   8 #include <time.h>
   9 #include <unistd.h>
  10
  11 #if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
  12 static clockid_t cl;
  13 static int use_clock;
  14 #endif
  15
  16 static int
  17 do_test (void)
  18 {
  19 #if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
  20 # if _POSIX_CPUTIME == 0
  21   if (sysconf (_SC_CPUTIME) < 0)
  22     use_clock = 0;
  23   else
  24 # endif
  25     /* See whether we can use the CPU clock.  */
  26     use_clock = clock_getcpuclockid (0, &cl) == 0;
  27 #endif
  28
  29   static const char *pat[] = {
  30     ".?.?.?.?.?.?.?Log\\.13",
  31     "(.?)(.?)(.?)(.?)(.?)(.?)(.?)Log\\.13",
  32     "((((((((((.?))))))))))((((((((((.?))))))))))((((((((((.?))))))))))"
  33     "((((((((((.?))))))))))((((((((((.?))))))))))((((((((((.?))))))))))"
  34     "((((((((((.?))))))))))Log\\.13" };
  35
  36   int fd = open ("../ChangeLog.old/ChangeLog.14", O_RDONLY);
  37   if (fd < 0)
  38     {
  39       printf ("Couldn't open ChangeLog.14: %m\n");
  40       return 1;
  41     }
  42
  43   struct stat64 st;
  44   if (fstat64 (fd, &st) < 0)
  45     {
  46       printf ("Couldn't fstat ChangeLog.14: %m\n");
  47       return 1;
  48     }
  49
  50   char *buf = malloc (st.st_size + 1);
  51   if (buf == NULL)
  52     {
  53       printf ("Couldn't allocate buffer: %m\n");
  54       return 1;
  55     }
  56
  57   if (read (fd, buf, st.st_size) != (ssize_t) st.st_size)
  58     {
  59       puts ("Couldn't read ChangeLog.14");
  60       return 1;
  61     }
  62
  63   close (fd);
  64   buf[st.st_size] = '\0';
  65
  66   setlocale (LC_ALL, "de_DE.UTF-8");
  67
  68   char *string = buf;
  69   size_t len = st.st_size;
  70
  71 #ifndef WHOLE_FILE_TIMING
  72   /* Don't search the whole file normally, it takes too long.  */
  73   if (len > 500000 + 64)
  74     {
  75       string += 500000;
  76       len -= 500000;
  77     }
  78 #endif
  79
  80   for (int testno = 0; testno < 4; ++testno)
  81     for (int i = 0; i < sizeof (pat) / sizeof (pat[0]); ++i)
  82       {
  83         printf ("test %d pattern %d", testno, i);
  84
  85         regex_t rbuf;
  86         struct re_pattern_buffer rpbuf;
  87         int err;
  88         if (testno < 2)
  89           {
  90             err = regcomp (&rbuf, pat[i],
  91                            REG_EXTENDED | (testno ? REG_NOSUB : 0));
  92             if (err != 0)
  93               {
  94                 putchar ('\n');
  95                 char errstr[300];
  96                 regerror (err, &rbuf, errstr, sizeof (errstr));
  97                 puts (errstr);
  98                 return err;
  99               }
 100           }
 101         else
 102           {
 103             re_set_syntax (RE_SYNTAX_POSIX_EGREP
 104                            | (testno == 3 ? RE_NO_SUB : 0));
 105
 106             memset (&rpbuf, 0, sizeof (rpbuf));
 107             const char *s = re_compile_pattern (pat[i], strlen (pat[i]),
 108                                                 &rpbuf);
 109             if (s != NULL)
 110               {
 111                 printf ("\n%s\n", s);
 112                 return 1;
 113               }
 114
 115             /* Just so that this can be tested with earlier glibc as well.  */
 116             if (testno == 3)
 117               rpbuf.no_sub = 1;
 118           }
 119
 120 #if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
 121       struct timespec start, stop;
 122       if (use_clock)
 123         use_clock = clock_gettime (cl, &start) == 0;
 124 #endif
 125
 126       if (testno < 2)
 127         {
 128           regmatch_t pmatch[71];
 129           err = regexec (&rbuf, string, 71, pmatch, 0);
 130           if (err == REG_NOMATCH)
 131             {
 132               puts ("\nregexec failed");
 133               return 1;
 134             }
 135
 136           if (testno == 0)
 137             {
 138               if (pmatch[0].rm_eo != pmatch[0].rm_so + 13
 139                   || pmatch[0].rm_eo > len
 140                   || pmatch[0].rm_so < len - 100
 141                   || strncmp (string + pmatch[0].rm_so,
 142                               " ChangeLog.13 for earlier changes",
 143                               sizeof " ChangeLog.13 for earlier changes" - 1)
 144                      != 0)
 145                 {
 146                   puts ("\nregexec without REG_NOSUB did not find the correct match");
 147                   return 1;
 148                 }
 149
 150               if (i > 0)
 151                 for (int j = 0, l = 1; j < 7; ++j)
 152                   for (int k = 0; k < (i == 1 ? 1 : 10); ++k, ++l)
 153                     if (pmatch[l].rm_so != pmatch[0].rm_so + j
 154                         || pmatch[l].rm_eo != pmatch[l].rm_so + 1)
 155                       {
 156                         printf ("\npmatch[%d] incorrect\n", l);
 157                         return 1;
 158                       }
 159             }
 160         }
 161       else
 162         {
 163           struct re_registers regs;
 164
 165           memset (&regs, 0, sizeof (regs));
 166           int match = re_search (&rpbuf, string, len, 0, len,
 167                                  &regs);
 168           if (match < 0)
 169             {
 170               puts ("\nre_search failed");
 171               return 1;
 172             }
 173
 174           if (match + 13 > len
 175               || match < len - 100
 176               || strncmp (string + match,
 177                           " ChangeLog.13 for earlier changes",
 178                           sizeof " ChangeLog.13 for earlier changes" - 1)
 179                   != 0)
 180             {
 181               puts ("\nre_search did not find the correct match");
 182               return 1;
 183             }
 184
 185           if (testno == 2)
 186             {
 187               if (regs.num_regs != 2 + (i == 0 ? 0 : i == 1 ? 7 : 70))
 188                 {
 189                   printf ("\nincorrect num_regs %d\n", regs.num_regs);
 190                   return 1;
 191                 }
 192
 193               if (regs.start[0] != match || regs.end[0] != match + 13)
 194                 {
 195                   printf ("\nincorrect regs.{start,end}[0] = { %d, %d}\n",
 196                           regs.start[0], regs.end[0]);
 197                   return 1;
 198                 }
 199
 200               if (regs.start[regs.num_regs - 1] != -1
 201                   || regs.end[regs.num_regs - 1] != -1)
 202                 {
 203                   puts ("\nincorrect regs.{start,end}[num_regs - 1]");
 204                   return 1;
 205                 }
 206
 207               if (i > 0)
 208                 for (int j = 0, l = 1; j < 7; ++j)
 209                   for (int k = 0; k < (i == 1 ? 1 : 10); ++k, ++l)
 210                     if (regs.start[l] != match + j
 211                         || regs.end[l] != regs.start[l] + 1)
 212                       {
 213                         printf ("\nregs.{start,end}[%d] incorrect\n", l);
 214                         return 1;
 215                       }
 216             }
 217         }
 218
 219 #if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
 220       if (use_clock)
 221         use_clock = clock_gettime (cl, &stop) == 0;
 222       if (use_clock)
 223         {
 224           stop.tv_sec -= start.tv_sec;
 225           if (stop.tv_nsec < start.tv_nsec)
 226             {
 227               stop.tv_sec--;
 228               stop.tv_nsec += 1000000000 - start.tv_nsec;
 229             }
 230           else
 231             stop.tv_nsec -= start.tv_nsec;
 232           printf (": %ld.%09lds\n", (long) stop.tv_sec, (long) stop.tv_nsec);
 233         }
 234       else
 235 #endif
 236         putchar ('\n');
 237
 238       if (testno < 2)
 239         regfree (&rbuf);
 240       else
 241         regfree (&rpbuf);
 242     }
 243
 244   return 0;
 245 }
 246
 247 #define TEST_FUNCTION do_test ()
 248 #include "../test-skeleton.c"