/* Regular expression tests.
Copyright (C) 2003-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <mcheck.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <getopt.h>
static void
replace_special_chars (char *str)
{
for (; (str = strpbrk (str, "NTSZ")) != NULL; ++str)
switch (*str)
{
case 'N': *str = '\n'; break;
case 'T': *str = '\t'; break;
case 'S': *str = ' '; break;
case 'Z': *str = '\0'; break;
}
}
static void
glibc_re_syntax (char *str)
{
char *p, *end = strchr (str, '\0') + 1;
/* Replace [[:<:]] with \< and [[:>:]] with \>. */
for (p = str; (p = strstr (p, "[[:")) != NULL; )
if ((p[3] == '<' || p[3] == '>') && strncmp (p + 4, ":]]", 3) == 0)
{
p[0] = '\\';
p[1] = p[3];
memmove (p + 2, p + 7, end - p - 7);
end -= 5;
p += 2;
}
else
p += 3;
}
static char *
mb_replace (char *dst, const char c)
{
switch (c)
{
/* Replace a with \'a and A with \'A. */
case 'a':
*dst++ = '\xc3';
*dst++ = '\xa1';
break;
case 'A':
*dst++ = '\xc3';
*dst++ = '\x81';
break;
/* Replace b with \v{c} and B with \v{C}. */
case 'b':
*dst++ = '\xc4';
*dst++ = '\x8d';
break;
case 'B':
*dst++ = '\xc4';
*dst++ = '\x8c';
break;
/* Replace c with \v{d} and C with \v{D}. */
case 'c':
*dst++ = '\xc4';
*dst++ = '\x8f';
break;
case 'C':
*dst++ = '\xc4';
*dst++ = '\x8e';
break;
/* Replace d with \'e and D with \'E. */
case 'd':
*dst++ = '\xc3';
*dst++ = '\xa9';
break;
case 'D':
*dst++ = '\xc3';
*dst++ = '\x89';
break;
}
return dst;
}
static char *
mb_frob_string (const char *str, const char *letters)
{
char *ret, *dst;
const char *src;
if (str == NULL)
return NULL;
ret = malloc (2 * strlen (str) + 1);
if (ret == NULL)
return NULL;
for (src = str, dst = ret; *src; ++src)
if (strchr (letters, *src))
dst = mb_replace (dst, *src);
else
*dst++ = *src;
*dst = '\0';
return ret;
}
/* Like mb_frob_string, but don't replace anything between
[: and :], [. and .] or [= and =] or characters escaped
with a backslash. */
static char *
mb_frob_pattern (const char *str, const char *letters)
{
char *ret, *dst;
const char *src;
int in_class = 0, escaped = 0;
if (str == NULL)
return NULL;
ret = malloc (2 * strlen (str) + 1);
if (ret == NULL)
return NULL;
for (src = str, dst = ret; *src; ++src)
if (*src == '\\')
{
escaped ^= 1;
*dst++ = *src;
}
else if (escaped)
{
escaped = 0;
*dst++ = *src;
continue;
}
else if (!in_class && strchr (letters, *src))
dst = mb_replace (dst, *src);
else
{
if (!in_class && *src == '[' && strchr (":.=", src[1]))
in_class = 1;
else if (in_class && *src == ']' && strchr (":.=", src[-1]))
in_class = 0;
*dst++ = *src;
}
*dst = '\0';
return ret;
}
static int
check_match (regmatch_t *rm, int idx, const char *string,
const char *match, const char *fail)
{
if (match[0] == '-' && match[1] == '\0')
{
if (rm[idx].rm_so == -1 && rm[idx].rm_eo == -1)
return 0;
printf ("%s rm[%d] unexpectedly matched\n", fail, idx);
return 1;
}
if (rm[idx].rm_so == -1 || rm[idx].rm_eo == -1)
{
printf ("%s rm[%d] unexpectedly did not match\n", fail, idx);
return 1;
}
if (match[0] == '@')
{
if (rm[idx].rm_so != rm[idx].rm_eo)
{
printf ("%s rm[%d] not empty\n", fail, idx);
return 1;
}
if (strncmp (string + rm[idx].rm_so, match + 1, strlen (match + 1) ?: 1))
{
printf ("%s rm[%d] not matching %s\n", fail, idx, match);
return 1;
}
return 0;
}
if (rm[idx].rm_eo - rm[idx].rm_so != strlen (match)
|| strncmp (string + rm[idx].rm_so, match,
rm[idx].rm_eo - rm[idx].rm_so))
{
printf ("%s rm[%d] not matching %s\n", fail, idx, match);
return 1;
}
return 0;
}
static int
test (const char *pattern, int cflags, const char *string, int eflags,
char *expect, char *matches, const char *fail)
{
regex_t re;
regmatch_t rm[10];
int n, ret = 0;
n = regcomp (&re, pattern, cflags);
if (n != 0)
{
char buf[500];
if (eflags == -1)
{
static struct { reg_errcode_t code; const char *name; } codes []
#define C(x) { REG_##x, #x }
= { C(NOERROR), C(NOMATCH), C(BADPAT), C(ECOLLATE),
C(ECTYPE), C(EESCAPE), C(ESUBREG), C(EBRACK),
C(EPAREN), C(EBRACE), C(BADBR), C(ERANGE),
C(ESPACE), C(BADRPT) };
for (int i = 0; i < sizeof (codes) / sizeof (codes[0]); ++i)
if (n == codes[i].code)
{
if (strcmp (string, codes[i].name))
{
printf ("%s regcomp returned REG_%s (expected REG_%s)\n",
fail, codes[i].name, string);
return 1;
}
return 0;
}
printf ("%s regcomp return value REG_%d\n", fail, n);
return 1;
}
regerror (n, &re, buf, sizeof (buf));
printf ("%s regcomp failed: %s\n", fail, buf);
return 1;
}
if (eflags == -1)
{
regfree (&re);
/* The test case file assumes something only guaranteed by the
rxspencer regex implementation. Namely that for empty
expressions regcomp() return REG_EMPTY. This is not the case
for us and so we ignore this error. */
if (strcmp (string, "EMPTY") == 0)
return 0;
printf ("%s regcomp unexpectedly succeeded\n", fail);
return 1;
}
if (regexec (&re, string, 10, rm, eflags))
{
regfree (&re);
if (expect == NULL)
return 0;
printf ("%s regexec failed\n", fail);
return 1;
}
regfree (&re);
if (expect == NULL)
{
printf ("%s regexec unexpectedly succeeded\n", fail);
return 1;
}
if (cflags & REG_NOSUB)
return 0;
ret = check_match (rm, 0, string, expect, fail);
if (matches == NULL)
return ret;
for (n = 1; ret == 0 && n < 10; ++n)
{
char *p = NULL;
if (matches)
{
p = strchr (matches, ',');
if (p != NULL)
*p = '\0';
}
ret = check_match (rm, n, string, matches ?: "-", fail);
if (p)
{
*p = ',';
matches = p + 1;
}
else
matches = NULL;
}
return ret;
}
static int
mb_test (const char *pattern, int cflags, const char *string, int eflags,
char *expect, const char *matches, const char *letters,
const char *fail)
{
char *pattern_mb = mb_frob_pattern (pattern, letters);
const char *string_mb
= eflags == -1 ? string : mb_frob_string (string, letters);
char *expect_mb = mb_frob_string (expect, letters);
char *matches_mb = mb_frob_string (matches, letters);
int ret = 0;
if (!pattern_mb || !string_mb
|| (expect && !expect_mb) || (matches && !matches_mb))
{
printf ("%s %m", fail);
ret = 1;
}
else
ret = test (pattern_mb, cflags, string_mb, eflags, expect_mb,
matches_mb, fail);
free (matches_mb);
free (expect_mb);
if (string_mb != string)
free ((char *) string_mb);
free (pattern_mb);
return ret;
}
static int
mb_tests (const char *pattern, int cflags, const char *string, int eflags,
char *expect, const char *matches)
{
int ret = 0;
int i;
char letters[9], fail[20];
/* The tests aren't supposed to work with xdigit, since a-dA-D are
hex digits while \'a \'A \v{c}\v{C}\v{d}\v{D}\'e \'E are not. */
if (strstr (pattern, "[:xdigit:]"))
return 0;
/* XXX: regex ATM handles only single byte equivalence classes. */
if (strstr (pattern, "[[=b=]]"))
return 0;
for (i = 1; i < 16; ++i)
{
char *p = letters;
if (i & 1)
{
if (!strchr (pattern, 'a') && !strchr (string, 'a')
&& !strchr (pattern, 'A') && !strchr (string, 'A'))
continue;
*p++ = 'a', *p++ = 'A';
}
if (i & 2)
{
if (!strchr (pattern, 'b') && !strchr (string, 'b')
&& !strchr (pattern, 'B') && !strchr (string, 'B'))
continue;
*p++ = 'b', *p++ = 'B';
}
if (i & 4)
{
if (!strchr (pattern, 'c') && !strchr (string, 'c')
&& !strchr (pattern, 'C') && !strchr (string, 'C'))
continue;
*p++ = 'c', *p++ = 'C';
}
if (i & 8)
{
if (!strchr (pattern, 'd') && !strchr (string, 'd')
&& !strchr (pattern, 'D') && !strchr (string, 'D'))
continue;
*p++ = 'd', *p++ = 'D';
}
*p++ = '\0';
sprintf (fail, "UTF-8 %s FAIL", letters);
ret |= mb_test (pattern, cflags, string, eflags, expect, matches,
letters, fail);
}
return ret;
}
int
main (int argc, char **argv)
{
int ret = 0;
char *line = NULL;
size_t line_len = 0;
ssize_t len;
FILE *f;
static int test_utf8 = 0;
static const struct option options[] =
{
{"utf8", no_argument, &test_utf8, 1},
{NULL, 0, NULL, 0 }
};
mtrace ();
while (getopt_long (argc, argv, "", options, NULL) >= 0);
if (optind + 1 != argc)
{
fprintf (stderr, "Missing test filename\n");
return 1;
}
f = fopen (argv[optind], "r");
if (f == NULL)
{
fprintf (stderr, "Couldn't open %s\n", argv[optind]);
return 1;
}
while ((len = getline (&line, &line_len, f)) > 0)
{
char *pattern, *flagstr, *string, *expect, *matches, *p;
int cflags = REG_EXTENDED, eflags = 0, try_bre_ere = 0;
if (line[len - 1] == '\n')
line[len - 1] = '\0';
/* Skip comments and empty lines. */
if (*line == '#' || *line == '\0')
continue;
puts (line);
fflush (stdout);
pattern = strtok (line, "\t");
if (pattern == NULL)
continue;
if (strcmp (pattern, "\"\"") == 0)
pattern += 2;
flagstr = strtok (NULL, "\t");
if (flagstr == NULL)
continue;
string = strtok (NULL, "\t");
if (string == NULL)
continue;
if (strcmp (string, "\"\"") == 0)
string += 2;
for (p = flagstr; *p; ++p)
switch (*p)
{
case '-':
break;
case 'b':
cflags &= ~REG_EXTENDED;
break;
case '&':
try_bre_ere = 1;
break;
case 'C':
eflags = -1;
break;
case 'i':
cflags |= REG_ICASE;
break;
case 's':
cflags |= REG_NOSUB;
break;
case 'n':
cflags |= REG_NEWLINE;
break;
case '^':
eflags |= REG_NOTBOL;
break;
case '$':
eflags |= REG_NOTEOL;
break;
case 'm':
case 'p':
case '#':
/* Not supported. */
flagstr = NULL;
break;
}
if (flagstr == NULL)
continue;
replace_special_chars (pattern);
glibc_re_syntax (pattern);
if (eflags != -1)
replace_special_chars (string);
expect = strtok (NULL, "\t");
matches = NULL;
if (expect != NULL)
{
replace_special_chars (expect);
matches = strtok (NULL, "\t");
if (matches != NULL)
replace_special_chars (matches);
}
if (setlocale (LC_ALL, "C") == NULL)
{
puts ("setlocale C failed");
ret = 1;
}
if (test (pattern, cflags, string, eflags, expect, matches, "FAIL")
|| (try_bre_ere
&& test (pattern, cflags & ~REG_EXTENDED, string, eflags,
expect, matches, "FAIL")))
ret = 1;
else if (test_utf8)
{
if (setlocale (LC_ALL, "cs_CZ.UTF-8") == NULL)
{
puts ("setlocale cs_CZ.UTF-8 failed");
ret = 1;
}
else if (test (pattern, cflags, string, eflags, expect, matches,
"UTF-8 FAIL")
|| (try_bre_ere
&& test (pattern, cflags & ~REG_EXTENDED, string,
eflags, expect, matches, "UTF-8 FAIL")))
ret = 1;
else if (mb_tests (pattern, cflags, string, eflags, expect, matches)
|| (try_bre_ere
&& mb_tests (pattern, cflags & ~REG_EXTENDED, string,
eflags, expect, matches)))
ret = 1;
}
}
free (line);
fclose (f);
return ret;
}