fnmatch() doesn't work with character classes?

fnmatch() doesn't work with character classes?

[Dustin Boyd]

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fnmatch() does not appear to work with character classes or character equivalents. regcomp(), however, does work with character classes, but not character equivalents. Is this behavior one should expect? I've tested with Debian, and it matches in both cases.

I sent this to the Cygwin ML rather than the Newlib ML just because of the fact that it may be locale-related, which is a problem on Cygwin's end, not Newlib's, if it's a problem at all.

The attached program will hopefully illustrate the trouble occurring on my Windows 10 machine:

regexec: 0 matched /[[:digit:]]/
fnmatch: 0 did not match /[[:digit:]]/
-- 
Sent using Mozilla Thunderbird

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#define _XOPEN_SOURCE 700
#include <assert.h>
#include <fnmatch.h>
#include <regex.h>
#include <stdio.h>

int
main (void)
{
  regex_t reg;
  const char *pattern = "[[:digit:]]";
  const char *s = "0";
  int cflags = REG_NOSUB;

  assert(regcomp(&reg, pattern, cflags) == 0);
  if (regexec(&reg, s, 0, NULL, 0) == REG_NOMATCH)
    {
      printf("regexec: %s did not match /%s/\n", s, pattern);
    }
  else
    {
      printf("regexec: %s matched /%s/\n", s, pattern);
    }
  regfree(&reg);

  if (fnmatch(pattern, s, 0) == FNM_NOMATCH)
    {
      printf("fnmatch: %s did not match /%s/\n", s, pattern);
    }
  else
    {
      printf("fnmatch: %s matched /%s/\n", s, pattern);
    }
}

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Re: fnmatch() doesn't work with character classes?

[Corinna Vinschen]

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On Nov 18 05:52, Dustin Boyd wrote:
> fnmatch() does not appear to work with character classes or character
> equivalents. regcomp(), however, does work with character classes, but
> not character equivalents. Is this behavior one should expect? I've
> tested with Debian, and it matches in both cases.

The behaviour is expected.  Debian uses glibc, Cygwin doesn't.

> I sent this to the Cygwin ML rather than the Newlib ML just because of
> the fact that it may be locale-related, which is a problem on Cygwin's
> end, not Newlib's, if it's a problem at all.

That's right in this case because Cygwin has its own fnmatch and regcomp.
Both are taken from FreeBSD.  So the support for character classes and
character equivalents match what FreeBSD supports.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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