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/* Test of constructing a regular expression from a literal string.
Copyright (C) 2010-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
#include <config.h>
#include "regex-quote.h"
#include <string.h>
#include "regex.h"
#include "xalloc.h"
#include "macros.h"
static void
check (const char *literal, int cflags, const char *expected)
{
struct regex_quote_spec spec;
char *result;
size_t length;
spec = regex_quote_spec_posix (cflags, false);
result = regex_quote (literal, &spec);
ASSERT (strcmp (result, expected) == 0);
length = regex_quote_length (literal, &spec);
ASSERT (length == strlen (result));
free (result);
result = (char *) xmalloc (1 + length + 1 + 1);
result[0] = '^';
strcpy (regex_quote_copy (result + 1, literal, &spec), "$");
{
regex_t regex;
regmatch_t match[1];
ASSERT (regcomp (®ex, result, cflags) == 0);
ASSERT (regexec (®ex, literal, 1, match, 0) == 0);
ASSERT (match[0].rm_so == 0);
ASSERT (match[0].rm_eo == strlen (literal));
regfree (®ex);
}
free (result);
spec = regex_quote_spec_posix (cflags, true);
result = regex_quote (literal, &spec);
length = regex_quote_length (literal, &spec);
ASSERT (length == strlen (result));
{
regex_t regex;
regmatch_t match[1];
ASSERT (regcomp (®ex, result, cflags) == 0);
ASSERT (regexec (®ex, literal, 1, match, 0) == 0);
ASSERT (match[0].rm_so == 0);
ASSERT (match[0].rm_eo == strlen (literal));
regfree (®ex);
}
free (result);
}
static void
test_bre (void)
{
check ("aBc", 0, "aBc");
check ("(foo[$HOME])", 0, "(foo\\[\\$HOME])");
check ("(foo{$HOME})", 0, "(foo{\\$HOME})");
}
static void
test_ere (void)
{
check ("aBc", REG_EXTENDED, "aBc");
check ("(foo[$HOME])", REG_EXTENDED, "\\(foo\\[\\$HOME]\\)");
check ("(foo{$HOME})", REG_EXTENDED, "\\(foo\\{\\$HOME}\\)");
}
int
main ()
{
test_bre ();
test_ere ();
return 0;
}
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