fnmatch.c
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/*@-bounds@*/
/*@-retalias@*/
/*@-shiftimplementation@*/
/*@-temptrans@*/
/*@-unreachable@*/
/* Copyright (C) 1991,1992,1993,1996,1997,1998,1999,2000,2001,2002,2003,2007
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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include "system.h"
#include <string.h>
#include "debug.h"
/* XXX Don't bother with wide and multibyte characters ... */
#undef HAVE_WCTYPE_H
#undef HAVE_WCHAR_H
#undef HAVE_MBSTATE_T
#undef HAVE_MBSRTOWCS
/* We often have to test for FNM_FILE_NAME and FNM_PERIOD being both set. */
#define NO_LEADING_PERIOD(flags) \
((flags & (FNM_FILE_NAME | FNM_PERIOD)) == (FNM_FILE_NAME | FNM_PERIOD))
/* 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
# ifdef isblank
# define ISBLANK(c) (ISASCII (c) && isblank (c))
# else
# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
# endif
# ifdef isgraph
# define ISGRAPH(c) (ISASCII (c) && isgraph (c))
# else
# define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
# endif
# define ISPRINT(c) (ISASCII (c) && isprint (c))
# define ISDIGIT(c) (ISASCII (c) && isdigit (c))
# define ISALNUM(c) (ISASCII (c) && isalnum (c))
# define ISALPHA(c) (ISASCII (c) && isalpha (c))
# define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
# define ISLOWER(c) (ISASCII (c) && islower (c))
# define ISPUNCT(c) (ISASCII (c) && ispunct (c))
# define ISSPACE(c) (ISASCII (c) && isspace (c))
# define ISUPPER(c) (ISASCII (c) && isupper (c))
# define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
# define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
/* The GNU C library provides support for user-defined character classes
and the functions from ISO C amendement 1. */
# ifdef CHARCLASS_NAME_MAX
# define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
# else
/* This shouldn't happen but some implementation might still have this
problem. Use a reasonable default value. */
# define CHAR_CLASS_MAX_LENGTH 256
# endif
# ifdef _LIBC
# define IS_CHAR_CLASS(string) __wctype (string)
# else
# define IS_CHAR_CLASS(string) wctype (string)
# endif
# ifdef _LIBC
# define ISWCTYPE(WC, WT) __iswctype (WC, WT)
# else
# define ISWCTYPE(WC, WT) iswctype (WC, WT)
# endif
# if (HAVE_MBSTATE_T && HAVE_MBSRTOWCS) || _LIBC
/* In this case we are implementing the multibyte character handling. */
# define HANDLE_MULTIBYTE 1
# endif
# else
# define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */
# define IS_CHAR_CLASS(string) \
(STREQ (string, "alpha") || STREQ (string, "upper") \
|| STREQ (string, "lower") || STREQ (string, "digit") \
|| STREQ (string, "alnum") || STREQ (string, "xdigit") \
|| STREQ (string, "space") || STREQ (string, "print") \
|| STREQ (string, "punct") || STREQ (string, "graph") \
|| STREQ (string, "cntrl") || STREQ (string, "blank"))
# endif
/* Avoid depending on library functions or files
whose names are inconsistent. */
# if defined __linux__ && (!defined _LIBC && !defined getenv)
extern char *getenv ();
# endif
# ifndef errno
extern int errno;
# endif
/* Global variable. */
static int posixly_correct;
# ifndef internal_function
/* Inside GNU libc we mark some function in a special way. In other
environments simply ignore the marking. */
# define internal_function
# endif
/* Note that this evaluates C many times. */
# ifdef _LIBC
# define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
# else
# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
# endif
# define CHAR char
# define UCHAR unsigned char
# define INT int
# define FCT internal_fnmatch
# define EXT ext_match
# define END end_pattern
# define STRUCT fnmatch_struct
# define L(CS) CS
# ifdef _LIBC
# define BTOWC(C) __btowc (C)
# else
# define BTOWC(C) btowc (C)
# endif
# define STRLEN(S) strlen (S)
# define STRCAT(D, S) strcat (D, S)
# if defined HAVE_MEMPCPY
# define MEMPCPY(D, S, N) mempcpy (D, S, N)
#else
# define MEMPCPY(D, S, N) __fnmatch_mempcpy (D, S, N)
static void *__fnmatch_mempcpy(void *, const void *, size_t);
static void *__fnmatch_mempcpy(void *dest, const void *src, size_t n)
{
return (void *)((char *)memcpy(dest, src, n) + n);
}
#endif
# define MEMCHR(S, C, N) memchr (S, C, N)
# define STRCOLL(S1, S2) strcoll (S1, S2)
# include "fnmatch_loop.c"
# if HANDLE_MULTIBYTE
/* Note that this evaluates C many times. */
# ifdef _LIBC
# define FOLD(c) ((flags & FNM_CASEFOLD) ? towlower (c) : (c))
# else
# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? towlower (c) : (c))
# endif
# define CHAR wchar_t
# define UCHAR wint_t
# define INT wint_t
# define FCT internal_fnwmatch
# define EXT ext_wmatch
# define END end_wpattern
# define STRUCT fnwmatch_struct
# define L(CS) L##CS
# define BTOWC(C) (C)
# define STRLEN(S) __wcslen (S)
# define STRCAT(D, S) __wcscat (D, S)
# define MEMPCPY(D, S, N) __wmempcpy (D, S, N)
# define MEMCHR(S, C, N) wmemchr (S, C, N)
# define STRCOLL(S1, S2) wcscoll (S1, S2)
# define WIDE_CHAR_VERSION 1
# undef IS_CHAR_CLASS
/* We have to convert the wide character string in a multibyte string. But
we know that the character class names consist of alphanumeric characters
from the portable character set, and since the wide character encoding
for a member of the portable character set is the same code point as
its single-byte encoding, we can use a simplified method to convert the
string to a multibyte character string. */
static wctype_t
is_char_class (const wchar_t *wcs)
{
char s[CHAR_CLASS_MAX_LENGTH + 1];
char *cp = s;
do
{
/* Test for a printable character from the portable character set. */
# ifdef _LIBC
if (*wcs < 0x20 || *wcs > 0x7e
|| *wcs == 0x24 || *wcs == 0x40 || *wcs == 0x60)
return (wctype_t) 0;
# else
switch (*wcs)
{
case L ' ': case L '!': case L '"': case L '#': case L '%':
case L '&': case L '\'': case L '(': case L ')': case L '*':
case L '+': case L ',': case L '-': case L '.': case L '/':
case L '0': case L '1': case L '2': case L '3': case L '4':
case L '5': case L '6': case L '7': case L '8': case L '9':
case L ':': case L ';': case L '<': case L '=': case L '>':
case L '?':
case L 'A': case L 'B': case L 'C': case L 'D': case L 'E':
case L 'F': case L 'G': case L 'H': case L 'I': case L 'J':
case L 'K': case L 'L': case L 'M': case L 'N': case L 'O':
case L 'P': case L 'Q': case L 'R': case L 'S': case L 'T':
case L 'U': case L 'V': case L 'W': case L 'X': case L 'Y':
case L 'Z':
case L '[': case L '\\': case L ']': case L '^': case L '_':
case L 'a': case L 'b': case L 'c': case L 'd': case L 'e':
case L 'f': case L 'g': case L 'h': case L 'i': case L 'j':
case L 'k': case L 'l': case L 'm': case L 'n': case L 'o':
case L 'p': case L 'q': case L 'r': case L 's': case L 't':
case L 'u': case L 'v': case L 'w': case L 'x': case L 'y':
case L 'z': case L '{': case L '|': case L '}': case L '~':
break;
default:
return (wctype_t) 0;
}
# endif
/* Avoid overrunning the buffer. */
if (cp == s + CHAR_CLASS_MAX_LENGTH)
return (wctype_t) 0;
*cp++ = (char) *wcs++;
}
while (*wcs != L '\0');
*cp = '\0';
# ifdef _LIBC
return __wctype (s);
# else
return wctype (s);
# endif
}
# define IS_CHAR_CLASS(string) is_char_class (string)
# include "fnmatch_loop.c"
# endif
int
fnmatch (pattern, string, flags)
const char *pattern;
const char *string;
int flags;
{
# if HANDLE_MULTIBYTE
if (__builtin_expect (MB_CUR_MAX, 1) != 1)
{
mbstate_t ps;
size_t n;
const char *p;
wchar_t *wpattern;
wchar_t *wstring;
/* Convert the strings into wide characters. */
memset (&ps, '\0', sizeof (ps));
p = pattern;
#ifdef _LIBC
n = strnlen (pattern, 1024);
#else
n = strlen (pattern);
#endif
if (__builtin_expect (n < 1024, 1))
{
wpattern = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
n = mbsrtowcs (wpattern, &p, n + 1, &ps);
if (__builtin_expect (n == (size_t) -1, 0))
/* Something wrong.
XXX Do we have to set `errno' to something which mbsrtows hasn't
already done? */
return -1;
if (p)
{
memset (&ps, '\0', sizeof (ps));
goto prepare_wpattern;
}
}
else
{
prepare_wpattern:
n = mbsrtowcs (NULL, &pattern, 0, &ps);
if (__builtin_expect (n == (size_t) -1, 0))
/* Something wrong.
XXX Do we have to set `errno' to something which mbsrtows hasn't
already done? */
return -1;
wpattern = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
assert (mbsinit (&ps));
(void) mbsrtowcs (wpattern, &pattern, n + 1, &ps);
}
assert (mbsinit (&ps));
#ifdef _LIBC
n = strnlen (string, 1024);
#else
n = strlen (string);
#endif
p = string;
if (__builtin_expect (n < 1024, 1))
{
wstring = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
n = mbsrtowcs (wstring, &p, n + 1, &ps);
if (__builtin_expect (n == (size_t) -1, 0))
/* Something wrong.
XXX Do we have to set `errno' to something which mbsrtows hasn't
already done? */
return -1;
if (p)
{
memset (&ps, '\0', sizeof (ps));
goto prepare_wstring;
}
}
else
{
prepare_wstring:
n = mbsrtowcs (NULL, &string, 0, &ps);
if (__builtin_expect (n == (size_t) -1, 0))
/* Something wrong.
XXX Do we have to set `errno' to something which mbsrtows hasn't
already done? */
return -1;
wstring = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
assert (mbsinit (&ps));
(void) mbsrtowcs (wstring, &string, n + 1, &ps);
}
return internal_fnwmatch (wpattern, wstring, wstring + n,
flags & FNM_PERIOD, flags, NULL);
}
# endif /* mbstate_t and mbsrtowcs or _LIBC. */
return internal_fnmatch (pattern, string, string + strlen (string),
flags & FNM_PERIOD, flags, NULL);
}
# ifdef _LIBC
# undef fnmatch
versioned_symbol (libc, __fnmatch, fnmatch, GLIBC_2_2_3);
# if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2_3)
strong_alias (__fnmatch, __fnmatch_old)
compat_symbol (libc, __fnmatch_old, fnmatch, GLIBC_2_0);
# endif
libc_hidden_ver (__fnmatch, fnmatch)
# endif
#endif /* _LIBC or not __GNU_LIBRARY__. */
/*@=unreachable@*/
/*@=temptrans@*/
/*@=shiftimplementation@*/
/*@=retalias@*/
/*@=bounds@*/