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/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.

NOTE: This source is derived from an old version taken from the GNU C

Library (glibc).

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, 51 Franklin Street - Fifth Floor,

Boston, MA 02110-1301, USA.  */

#ifdef HAVE_CONFIG_H

#if defined (CONFIG_BROKETS)

/* We use <config.h> instead of "config.h" so that a compilation

   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h

   (which it would do because it found this file in $srcdir).  */

#include <config.h>

#else

#include "config.h"

#endif

#endif

#ifndef _GNU_SOURCE

#define _GNU_SOURCE

#endif

/* This code to undef const added in libiberty.  */

#ifndef __STDC__

/* This is a separate conditional since some stdc systems

   reject `defined (const)'.  */

#ifndef const

#define const

#endif

#endif

#include <errno.h>

#include <fnmatch.h>

#include <safe-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(__GNU_LIBRARY__) && !defined(STDC_HEADERS)

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 unsigned char c;

#define FOLD(c) ((flags & FNM_CASEFOLD) ? 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++;

              c = FOLD (c);

            }

          if (FOLD ((unsigned char)*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++, ++n)

            if (((flags & FNM_FILE_NAME) && *n == '/') ||

                (c == '?' && *n == '\0'))

              return FNM_NOMATCH;

          if (c == '\0')

            return 0;

          {

            unsigned char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c;

            c1 = FOLD (c1);

            for (--p; *n != '\0'; ++n)

              if ((c == '[' || FOLD ((unsigned char)*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 negate;

            if (*n == '\0')

              return FNM_NOMATCH;

            if ((flags & FNM_PERIOD) && *n == '.' &&

                (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))

              return FNM_NOMATCH;

            negate = (*p == '!' || *p == '^');

            if (negate)

              ++p;

            c = *p++;

            for (;;)

              {

                register unsigned char cstart = c, cend = c;

                if (!(flags & FNM_NOESCAPE) && c == '\\')

                  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 ((unsigned char)*n) >= cstart

                    && FOLD ((unsigned char)*n) <= cend)

                  goto matched;

                if (c == ']')

                  break;

              }

            if (!negate)

              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 == '\\')

                  /* XXX 1003.2d11 is unclear if this is right.  */

                  ++p;

              }

            if (negate)

              return FNM_NOMATCH;

          }

          break;

        default:

          if (c != FOLD ((unsigned char)*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;

}

#endif  /* _LIBC or not __GNU_LIBRARY__.  */