315 lines
8.9 KiB
C
315 lines
8.9 KiB
C
/* Copyright (C) 1991-1993, 1996-1999, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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/* Enable GNU extensions in fnmatch.h. */
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE 1
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#endif
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#include <assert.h>
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#include <errno.h>
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#include <fnmatch.h>
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#include <ctype.h>
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#if HAVE_STRING_H || defined _LIBC
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# include <string.h>
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#else
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# include <strings.h>
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#endif
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#if defined STDC_HEADERS || defined _LIBC
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# include <stdlib.h>
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#endif
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/* For platform which support the ISO C amendement 1 functionality we
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support user defined character classes. */
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#if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
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/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
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# include <wchar.h>
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# include <wctype.h>
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#endif
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/* Comment out all this code if we are using the GNU C Library, and are not
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actually compiling the library itself. This code is part of the GNU C
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Library, but also included in many other GNU distributions. Compiling
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and linking in this code is a waste when using the GNU C library
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(especially if it is a shared library). Rather than having every GNU
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program understand `configure --with-gnu-libc' and omit the object files,
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it is simpler to just do this in the source for each such file. */
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#if defined _LIBC || !defined __GNU_LIBRARY__
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# if defined STDC_HEADERS || !defined isascii
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# define ISASCII(c) 1
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# else
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# define ISASCII(c) isascii(c)
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# endif
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# ifdef isblank
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# define ISBLANK(c) (ISASCII (c) && isblank (c))
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# else
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# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
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# endif
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# ifdef isgraph
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# define ISGRAPH(c) (ISASCII (c) && isgraph (c))
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# else
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# define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
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# endif
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# define ISPRINT(c) (ISASCII (c) && isprint (c))
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# define ISDIGIT(c) (ISASCII (c) && isdigit (c))
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# define ISALNUM(c) (ISASCII (c) && isalnum (c))
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# define ISALPHA(c) (ISASCII (c) && isalpha (c))
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# define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
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# define ISLOWER(c) (ISASCII (c) && islower (c))
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# define ISPUNCT(c) (ISASCII (c) && ispunct (c))
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# define ISSPACE(c) (ISASCII (c) && isspace (c))
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# define ISUPPER(c) (ISASCII (c) && isupper (c))
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# define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
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# define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
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# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
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/* The GNU C library provides support for user-defined character classes
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and the functions from ISO C amendement 1. */
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# ifdef CHARCLASS_NAME_MAX
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# define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
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# else
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/* This shouldn't happen but some implementation might still have this
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problem. Use a reasonable default value. */
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# define CHAR_CLASS_MAX_LENGTH 256
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# endif
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# ifdef _LIBC
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# define IS_CHAR_CLASS(string) __wctype (string)
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# else
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# define IS_CHAR_CLASS(string) wctype (string)
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# endif
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# ifdef _LIBC
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# define ISWCTYPE(WC, WT) __iswctype (WC, WT)
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# else
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# define ISWCTYPE(WC, WT) iswctype (WC, WT)
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# endif
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# if (HAVE_MBSTATE_T && HAVE_MBSRTOWCS) || _LIBC
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/* In this case we are implementing the multibyte character handling. */
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# define HANDLE_MULTIBYTE 1
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# endif
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# else
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# define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */
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# define IS_CHAR_CLASS(string) \
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(STREQ (string, "alpha") || STREQ (string, "upper") \
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|| STREQ (string, "lower") || STREQ (string, "digit") \
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|| STREQ (string, "alnum") || STREQ (string, "xdigit") \
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|| STREQ (string, "space") || STREQ (string, "print") \
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|| STREQ (string, "punct") || STREQ (string, "graph") \
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|| STREQ (string, "cntrl") || STREQ (string, "blank"))
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# endif
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/* Avoid depending on library functions or files
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whose names are inconsistent. */
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# if !defined _LIBC && !defined getenv
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extern char *getenv ();
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# endif
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# ifndef errno
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extern int errno;
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# endif
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/* This function doesn't exist on most systems. */
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# if !defined HAVE___STRCHRNUL && !defined _LIBC
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static char *
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__strchrnul (s, c)
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const char *s;
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int c;
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{
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char *result = strchr (s, c);
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if (result == NULL)
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result = strchr (s, '\0');
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return result;
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}
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# endif
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# if HANDLE_MULTIBYTE && !defined HAVE___STRCHRNUL && !defined _LIBC
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static wchar_t *
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__wcschrnul (s, c)
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const wchar_t *s;
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wint_t c;
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{
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wchar_t *result = wcschr (s, c);
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if (result == NULL)
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result = wcschr (s, '\0');
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return result;
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}
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# endif
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# ifndef internal_function
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/* Inside GNU libc we mark some function in a special way. In other
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environments simply ignore the marking. */
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# define internal_function
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# endif
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/* Note that this evaluates C many times. */
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# ifdef _LIBC
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# define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
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# else
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# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
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# endif
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# define CHAR char
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# define UCHAR unsigned char
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# define FCT internal_fnmatch
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# define L(CS) CS
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# ifdef _LIBC
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# define BTOWC(C) __btowc (C)
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# else
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# define BTOWC(C) btowc (C)
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# endif
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# define STRCHR(S, C) strchr (S, C)
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# define STRCHRNUL(S, C) __strchrnul (S, C)
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# define STRCOLL(S1, S2) strcoll (S1, S2)
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# include "fnmatch_loop.c"
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# if HANDLE_MULTIBYTE
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/* Note that this evaluates C many times. */
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# ifdef _LIBC
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# define FOLD(c) ((flags & FNM_CASEFOLD) ? towlower (c) : (c))
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# else
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# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? towlower (c) : (c))
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# endif
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# define CHAR wchar_t
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# define UCHAR wint_t
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# define FCT internal_fnwmatch
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# define L(CS) L##CS
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# define BTOWC(C) (C)
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# define STRCHR(S, C) wcschr (S, C)
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# define STRCHRNUL(S, C) __wcschrnul (S, C)
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# define STRCOLL(S1, S2) wcscoll (S1, S2)
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# undef IS_CHAR_CLASS
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# ifdef _LIBC
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/* We have to convert the wide character string in a multibyte string. But
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we know that the character class names are ASCII strings and since the
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internal wide character encoding is UCS4 we can use a simplified method
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to convert the string to a multibyte character string. */
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static wctype_t
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is_char_class (const wchar_t *wcs)
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{
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char s[CHAR_CLASS_MAX_LENGTH + 1];
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char *cp = s;
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do
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{
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if (*wcs < 0x20 || *wcs >= 0x7f)
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return 0;
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*cp++ = (char) *wcs;
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}
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while (*wcs++ != L'\0');
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return __wctype (s);
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}
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# else
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/* Since we cannot assume anything about the internal encoding we have to
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convert the string back to multibyte representation the hard way. */
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static wctype_t
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is_char_class (const wchar_t *wcs)
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{
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mbstate_t ps;
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const wchar_t *pwc;
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char *s;
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size_t n;
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memset (&ps, '\0', sizeof (ps));
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pwc = wcs;
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n = wcsrtombs (NULL, &pwc, 0, &ps);
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if (n == (size_t) -1)
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/* Something went wrong. */
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return 0;
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s = alloca (n + 1);
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assert (mbsinit (&ps));
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pwc = wcs;
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(void) wcsrtombs (s, &pwc, n + 1, &ps);
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return wctype (s);
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}
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# endif
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# define IS_CHAR_CLASS(string) is_char_class (string)
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# include "fnmatch_loop.c"
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# endif
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int
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fnmatch (pattern, string, flags)
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const char *pattern;
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const char *string;
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int flags;
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{
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# if HANDLE_MULTIBYTE
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mbstate_t ps;
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size_t n;
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wchar_t *wpattern;
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wchar_t *wstring;
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if (MB_CUR_MAX == 1)
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/* This is an optimization for 8-bit character set. */
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return internal_fnmatch (pattern, string, flags & FNM_PERIOD, flags);
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/* Convert the strings into wide characters. */
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memset (&ps, '\0', sizeof (ps));
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n = mbsrtowcs (NULL, &pattern, 0, &ps);
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if (n == (size_t) -1)
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/* Something wrong.
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XXX Do we have to set `errno' to something which mbsrtows hasn't
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already done? */
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return -1;
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wpattern = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
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assert (mbsinit (&ps));
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(void) mbsrtowcs (wpattern, &pattern, n + 1, &ps);
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assert (mbsinit (&ps));
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n = mbsrtowcs (NULL, &string, 0, &ps);
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if (n == (size_t) -1)
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/* Something wrong.
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XXX Do we have to set `errno' to something which mbsrtows hasn't
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already done? */
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return -1;
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wstring = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
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assert (mbsinit (&ps));
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(void) mbsrtowcs (wstring, &string, n + 1, &ps);
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return internal_fnwmatch (wpattern, wstring, flags & FNM_PERIOD, flags);
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# else
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return internal_fnmatch (pattern, string, flags & FNM_PERIOD, flags);
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# endif /* mbstate_t and mbsrtowcs or _LIBC. */
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}
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#endif /* _LIBC or not __GNU_LIBRARY__. */
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