posix/tst-boost.c

   1 /* Regular expression tests.
   2    Copyright (C) 2003-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/types.h>
  20 #include <mcheck.h>
  21 #include <regex.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 void
  27 frob_escapes (char *src, int pattern)
  28 {
  29   char *dst;
  30
  31   for (dst = src; *src != '\0'; dst++, src++)
  32     {
  33       if (*src == '\\')
  34         {
  35           switch (src[1])
  36             {
  37             case 't':
  38               src++;
  39               *dst = '\t';
  40               continue;
  41             case 'n':
  42               src++;
  43               *dst = '\n';
  44               continue;
  45             case 'r':
  46               src++;
  47               *dst = '\r';
  48               continue;
  49             case '\\':
  50             case '^':
  51             case '{':
  52             case '|':
  53             case '}':
  54               if (!pattern)
  55                 {
  56                   src++;
  57                   *dst = *src;
  58                   continue;
  59                 }
  60               break;
  61             }
  62         }
  63       if (src != dst)
  64         *dst = *src;
  65     }
  66   *dst = '\0';
  67 }
  68
  69 int
  70 main (int argc, char **argv)
  71 {
  72   int ret = 0, n;
  73   char *line = NULL;
  74   size_t line_len = 0;
  75   ssize_t len;
  76   FILE *f;
  77   char *pattern, *string;
  78   int flags = REG_EXTENDED;
  79   int eflags = 0;
  80   regex_t re;
  81   regmatch_t rm[20];
  82
  83   mtrace ();
  84
  85   if (argc < 2)
  86     {
  87       fprintf (stderr, "Missing test filename\n");
  88       return 1;
  89     }
  90
  91   f = fopen (argv[1], "r");
  92   if (f == NULL)
  93     {
  94       fprintf (stderr, "Couldn't open %s\n", argv[1]);
  95       return 1;
  96     }
  97
  98   while ((len = getline (&line, &line_len, f)) > 0)
  99     {
 100       char *p, *q;
 101       int i;
 102
 103       if (line[len - 1] == '\n')
 104         line[--len] = '\0';
 105
 106       puts (line);
 107
 108       if (line[0] == ';')
 109         continue;
 110
 111       if (line[0] == '\0')
 112         continue;
 113
 114       if (line[0] == '-')
 115         {
 116           if (strstr (line, "REG_BASIC"))
 117             flags = 0;
 118           else
 119             flags = REG_EXTENDED;
 120           if (strstr (line, "REG_ICASE"))
 121             flags |= REG_ICASE;
 122           if (strstr (line, "REG_NEWLINE"))
 123             flags |= REG_NEWLINE;
 124           eflags = 0;
 125           if (strstr (line, "REG_NOTBOL"))
 126             eflags |= REG_NOTBOL;
 127           if (strstr (line, "REG_NOTEOL"))
 128             eflags |= REG_NOTEOL;
 129           continue;
 130         }
 131
 132       pattern = line + strspn (line, " \t");
 133       if (*pattern == '\0')
 134         continue;
 135       p = pattern + strcspn (pattern, " \t");
 136       if (*p == '\0')
 137         continue;
 138       *p++ = '\0';
 139
 140       string = p + strspn (p, " \t");
 141       if (*string == '\0')
 142         continue;
 143       if (*string == '"')
 144         {
 145           string++;
 146           p = strchr (string, '"');
 147           if (p == NULL)
 148             continue;
 149           *p++ = '\0';
 150         }
 151       else
 152         {
 153           p = string + strcspn (string, " \t");
 154           if (*string == '!')
 155             string = NULL;
 156           else if (*p == '\0')
 157             continue;
 158           else
 159             *p++ = '\0';
 160         }
 161
 162       frob_escapes (pattern, 1);
 163       if (string != NULL)
 164         frob_escapes (string, 0);
 165
 166       n = regcomp (&re, pattern, flags);
 167       if (n != 0)
 168         {
 169           if (string != NULL)
 170             {
 171               char buf[500];
 172               regerror (n, &re, buf, sizeof (buf));
 173               printf ("FAIL regcomp unexpectedly failed: %s\n",
 174                       buf);
 175               ret = 1;
 176             }
 177           continue;
 178         }
 179       else if (string == NULL)
 180         {
 181           regfree (&re);
 182           puts ("FAIL regcomp unpexpectedly succeeded");
 183           ret = 1;
 184           continue;
 185         }
 186
 187       if (regexec (&re, string, 20, rm, eflags))
 188         {
 189           for (i = 0; i < 20; ++i)
 190             {
 191               rm[i].rm_so = -1;
 192               rm[i].rm_eo = -1;
 193             }
 194         }
 195
 196       regfree (&re);
 197
 198       for (i = 0; i < 20 && *p != '\0'; ++i)
 199         {
 200           int rm_so, rm_eo;
 201
 202           rm_so = strtol (p, &q, 10);
 203           if (p == q)
 204             break;
 205           p = q;
 206
 207           rm_eo = strtol (p, &q, 10);
 208           if (p == q)
 209             break;
 210           p = q;
 211
 212           if (rm[i].rm_so != rm_so || rm[i].rm_eo != rm_eo)
 213             {
 214               printf ("FAIL rm[%d] %d..%d != expected %d..%d\n",
 215                       i, rm[i].rm_so, rm[i].rm_eo, rm_so, rm_eo);
 216               ret = 1;
 217               break;
 218             }
 219         }
 220     }
 221
 222   free (line);
 223   fclose (f);
 224   return ret;
 225 }