fnmatch.c

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/* Copyright (C) 1991, 1992, 1993, 1996, 1997 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 2, 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, write to the Free Software Foundation,
  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

#ifdef WIN32

/* Enable GNU extensions in fnmatch.h.  */
#ifndef _GNU_SOURCE
# define _GNU_SOURCE    1
#endif

#include <errno.h>
#include <BLI_fnmatch.h>
#include <ctype.h>


/* Comment out all this code if we are using the GNU C Library, and are not
   actually compiling the library itself.  This code is part of the GNU C
   Library, but also included in many other GNU distributions.  Compiling
   and linking in this code is a waste when using the GNU C library
   (especially if it is a shared library).  Rather than having every GNU
   program understand `configure --with-gnu-libc' and omit the object files,
   it is simpler to just do this in the source for each such file.  */

#if defined _LIBC || !defined __GNU_LIBRARY__


# if defined STDC_HEADERS || !defined isascii
#  define ISASCII(c) 1
# else
#  define ISASCII(c) isascii(c)
# endif

# define ISUPPER(c) (ISASCII (c) && isupper (c))


# ifndef errno
extern int errno;
# endif

/* Match STRING against the filename pattern PATTERN, returning zero if
   it matches, nonzero if not.  */
int
fnmatch (const char *pattern, const char *string, int flags)
{
  register const char *p = pattern, *n = string;
  register char c;

/* Note that this evaluates C many times.  */
# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))

  while ((c = *p++) != '\0')
        {
          c = FOLD (c);

          switch (c)
        {
        case '?':
          if (*n == '\0')
                return FNM_NOMATCH;
          else if ((flags & FNM_FILE_NAME) && *n == '/')
                return FNM_NOMATCH;
          else if ((flags & FNM_PERIOD) && *n == '.' &&
                   (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
                return FNM_NOMATCH;
          break;

        case '\\':
          if (!(flags & FNM_NOESCAPE))
                {
                  c = *p++;
                  if (c == '\0')
                /* Trailing \ loses.  */
                return FNM_NOMATCH;
                  c = FOLD (c);
                }
          if (FOLD (*n) != c)
                return FNM_NOMATCH;
          break;

        case '*':
          if ((flags & FNM_PERIOD) && *n == '.' &&
                  (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
                return FNM_NOMATCH;

          for (c = *p++; c == '?' || c == '*'; c = *p++)
                {
                  if ((flags & FNM_FILE_NAME) && *n == '/')
                /* A slash does not match a wildcard under FNM_FILE_NAME.  */
                return FNM_NOMATCH;
                  else if (c == '?')
                {
                  /* A ? needs to match one character.  */
                  if (*n == '\0')
                        /* There isn't another character; no match.  */
                        return FNM_NOMATCH;
                  else
                        /* One character of the string is consumed in matching
                           this ? wildcard, so *??? won't match if there are
                           less than three characters.  */
                        ++n;
                }
                }

          if (c == '\0')
                return 0;

          {
                char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c;
                c1 = FOLD (c1);
                for (--p; *n != '\0'; ++n)
                  if ((c == '[' || FOLD (*n) == c1) &&
                  fnmatch (p, n, flags & ~FNM_PERIOD) == 0)
                return 0;
                return FNM_NOMATCH;
          }

        case '[':
          {
                /* Nonzero if the sense of the character class is inverted.  */
                register int not;

                if (*n == '\0')
                  return FNM_NOMATCH;

                if ((flags & FNM_PERIOD) && *n == '.' &&
                (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
                  return FNM_NOMATCH;

                not = (*p == '!' || *p == '^');
                if (not)
                  ++p;

                c = *p++;
                for (;;)
                  {
                register char cstart = c, cend = c;

                if (!(flags & FNM_NOESCAPE) && c == '\\')
                  {
                        if (*p == '\0')
                          return FNM_NOMATCH;
                        cstart = cend = *p++;
                  }

                cstart = cend = FOLD (cstart);

                if (c == '\0')
                  /* [ (unterminated) loses.  */
                  return FNM_NOMATCH;

                c = *p++;
                c = FOLD (c);

                if ((flags & FNM_FILE_NAME) && c == '/')
                  /* [/] can never match.  */
                  return FNM_NOMATCH;

                if (c == '-' && *p != ']')
                  {
                        cend = *p++;
                        if (!(flags & FNM_NOESCAPE) && cend == '\\')
                          cend = *p++;
                        if (cend == '\0')
                          return FNM_NOMATCH;
                        cend = FOLD (cend);

                        c = *p++;
                  }

                if (FOLD (*n) >= cstart && FOLD (*n) <= cend)
                  goto matched;

                if (c == ']')
                  break;
                  }
                if (!not)
                  return FNM_NOMATCH;
                break;

          matched:;
                /* Skip the rest of the [...] that already matched.  */
                while (c != ']')
                  {
                if (c == '\0')
                  /* [... (unterminated) loses.  */
                  return FNM_NOMATCH;

                c = *p++;
                if (!(flags & FNM_NOESCAPE) && c == '\\')
                  {
                        if (*p == '\0')
                          return FNM_NOMATCH;
                        /* XXX 1003.2d11 is unclear if this is right.  */
                        ++p;
                  }
                  }
                if (not)
                  return FNM_NOMATCH;
          }
          break;

        default:
          if (c != FOLD (*n))
                return FNM_NOMATCH;
        }

          ++n;
        }

  if (*n == '\0')
        return 0;

  if ((flags & FNM_LEADING_DIR) && *n == '/')
        /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz".  */
        return 0;

  return FNM_NOMATCH;

# undef FOLD
}

#endif  /* _LIBC or not __GNU_LIBRARY__.  */

#else

/* intentionally empty for UNIX */

#endif /* WIN32 */