/* Copyright (C) 1992 Free Software Foundation, Inc.
This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.  */

/* Modified slightly by Brian Berliner <berliner@sun.com> and
   Jim Blandy <jimb@cyclic.com> for CVS use */

/*
 * Modified for WinCvs/MacCVS : Alexandre Parenteau <aubonbeurre@hotmail.com> --- June 1998
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

/* IGNORE(@ */
/* #include <ansidecl.h> */
/* @) */
#include <errno.h>
#include "fnmatch.h"
#ifdef TARGET_OS_MAC
#	define not notnot
#endif /* TARGET_OS_MAC */

/* Some file systems are case-insensitive.  If FOLD_FN_CHAR is
   #defined, it maps the character C onto its "canonical" form.  In a
   case-insensitive system, it would map all alphanumeric characters
   to lower case.  Under Windows NT, / and \ are both path component
   separators, so FOLD_FN_CHAR would map them both to /.  */
#ifndef FOLD_FN_CHAR
#define FOLD_FN_CHAR(c) (c)
#endif

#if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS) && !defined(WIN32) && !defined(TARGET_OS_MAC)
extern int errno;
#endif

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

  if ((flags & ~__FNM_FLAGS) != 0)
    {
      errno = EINVAL;
      return -1;
    }

  while ((c = *p++) != '\0')
    {
      switch (c)
	{
	case '?':
	  if (*n == '\0')
	    return FNM_NOMATCH;
	  else if ((flags & FNM_PATHNAME) && *n == '/')
	    return FNM_NOMATCH;
	  else if ((flags & FNM_PERIOD) && *n == '.' &&
		   (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
	    return FNM_NOMATCH;
	  break;
	  
	case '\\':
	  if (!(flags & FNM_NOESCAPE))
	    c = *p++;
	  if (*n != c)
	    return FNM_NOMATCH;
	  break;
	  
	case '*':
	  if ((flags & FNM_PERIOD) && *n == '.' &&
	      (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
	    return FNM_NOMATCH;
	  
	  for (c = *p++; c == '?' || c == '*'; c = *p++, ++n)
	    if (((flags & FNM_PATHNAME) && *n == '/') ||
		(c == '?' && *n == '\0'))
	      return FNM_NOMATCH;
	  
	  if (c == '\0')
	    return 0;
	  
	  {
	    char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c;
	    for (--p; *n != '\0'; ++n)
	      if ((c == '[' || *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_PATHNAME) && 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 == '\\')
		  cstart = cend = *p++;
		
		if (c == '\0')
		  /* [ (unterminated) loses.  */
		  return FNM_NOMATCH;
		
		c = *p++;
		
		if ((flags & FNM_PATHNAME) && 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;
		    c = *p++;
		  }
		
		if (*n >= cstart && *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 == '\\')
		  /* 1003.2d11 is unclear if this is right.  %%% */
		  ++p;
	      }
	    if (not)
	      return FNM_NOMATCH;
	  }
	  break;
	  
	default:
	  if (FOLD_FN_CHAR (c) != FOLD_FN_CHAR (*n))
	    return FNM_NOMATCH;
	}
      
      ++n;
    }

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

  return FNM_NOMATCH;
}

#if defined (__CYGWIN32__) || defined (WIN32)
#if 0
main ()
{
  int c;

  for (c = 0; c < 256; c++)
    {
      int t;

      if (c == '\\')
        t = '/';
      else
        t = tolower (c);
      
      if ((c & 0x7) == 0x0)
         printf ("    ");
      printf ("0x%02x,", t);
      if ((c & 0x7) == 0x7)
         putchar ('\n');
      else if ((c & 0x7) == 0x3)
         putchar (' ');
    }
}
#endif

unsigned char
WNT_filename_classes[] =
{
    0x00,0x01,0x02,0x03, 0x04,0x05,0x06,0x07,
    0x08,0x09,0x0a,0x0b, 0x0c,0x0d,0x0e,0x0f,
    0x10,0x11,0x12,0x13, 0x14,0x15,0x16,0x17,
    0x18,0x19,0x1a,0x1b, 0x1c,0x1d,0x1e,0x1f,
    0x20,0x21,0x22,0x23, 0x24,0x25,0x26,0x27,
    0x28,0x29,0x2a,0x2b, 0x2c,0x2d,0x2e,0x2f,
    0x30,0x31,0x32,0x33, 0x34,0x35,0x36,0x37,
    0x38,0x39,0x3a,0x3b, 0x3c,0x3d,0x3e,0x3f,
    0x40,0x61,0x62,0x63, 0x64,0x65,0x66,0x67,
    0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,
    0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,
    0x78,0x79,0x7a,0x5b, 0x2f,0x5d,0x5e,0x5f,
    0x60,0x61,0x62,0x63, 0x64,0x65,0x66,0x67,
    0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,
    0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,
    0x78,0x79,0x7a,0x7b, 0x7c,0x7d,0x7e,0x7f,
    0x80,0x81,0x82,0x83, 0x84,0x85,0x86,0x87,
    0x88,0x89,0x8a,0x8b, 0x8c,0x8d,0x8e,0x8f,
    0x90,0x91,0x92,0x93, 0x94,0x95,0x96,0x97,
    0x98,0x99,0x9a,0x9b, 0x9c,0x9d,0x9e,0x9f,
    0xa0,0xa1,0xa2,0xa3, 0xa4,0xa5,0xa6,0xa7,
    0xa8,0xa9,0xaa,0xab, 0xac,0xad,0xae,0xaf,
    0xb0,0xb1,0xb2,0xb3, 0xb4,0xb5,0xb6,0xb7,
    0xb8,0xb9,0xba,0xbb, 0xbc,0xbd,0xbe,0xbf,
    0xc0,0xc1,0xc2,0xc3, 0xc4,0xc5,0xc6,0xc7,
    0xc8,0xc9,0xca,0xcb, 0xcc,0xcd,0xce,0xcf,
    0xd0,0xd1,0xd2,0xd3, 0xd4,0xd5,0xd6,0xd7,
    0xd8,0xd9,0xda,0xdb, 0xdc,0xdd,0xde,0xdf,
    0xe0,0xe1,0xe2,0xe3, 0xe4,0xe5,0xe6,0xe7,
    0xe8,0xe9,0xea,0xeb, 0xec,0xed,0xee,0xef,
    0xf0,0xf1,0xf2,0xf3, 0xf4,0xf5,0xf6,0xf7,
    0xf8,0xf9,0xfa,0xfb, 0xfc,0xfd,0xfe,0xff,
};
#endif /* (__CYGWIN32__) || defined (WIN32) */
