mirror of git://sourceware.org/git/glibc.git
294 lines
8.7 KiB
C
294 lines
8.7 KiB
C
/* Copyright (C) 1991-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _LIBC
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# include <libc-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 <fnmatch.h>
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#include <assert.h>
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#include <errno.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include <wctype.h>
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#include <stddef.h>
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#include <stdbool.h>
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/* We need some of the locale data (the collation sequence information)
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but there is no interface to get this information in general. Therefore
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we support a correct implementation only in glibc. */
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#ifdef _LIBC
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# include "../locale/localeinfo.h"
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# include "../locale/coll-lookup.h"
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# include <shlib-compat.h>
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# define CONCAT(a,b) __CONCAT(a,b)
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# define btowc __btowc
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# define iswctype __iswctype
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# define mbsrtowcs __mbsrtowcs
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# define mempcpy __mempcpy
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# define strnlen __strnlen
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# define towlower __towlower
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# define wcscat __wcscat
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# define wcslen __wcslen
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# define wctype __wctype
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# define wmemchr __wmemchr
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# define wmempcpy __wmempcpy
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# define fnmatch __fnmatch
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extern int fnmatch (const char *pattern, const char *string, int flags);
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#endif
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#ifdef _LIBC
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# if __GNUC__ >= 7
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# define FALLTHROUGH __attribute__ ((__fallthrough__))
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# else
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# define FALLTHROUGH ((void) 0)
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# endif
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#else
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# include "attribute.h"
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#endif
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#include <intprops.h>
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#include <flexmember.h>
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#include <scratch_buffer.h>
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#ifdef _LIBC
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typedef ptrdiff_t idx_t;
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#else
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# include "idx.h"
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#endif
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/* We often have to test for FNM_FILE_NAME and FNM_PERIOD being both set. */
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#define NO_LEADING_PERIOD(flags) \
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((flags & (FNM_FILE_NAME | FNM_PERIOD)) == (FNM_FILE_NAME | FNM_PERIOD))
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/* Provide support for user-defined character classes, based on the functions
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from ISO C 90 amendment 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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#define IS_CHAR_CLASS(string) wctype (string)
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/* Avoid depending on library functions or files
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whose names are inconsistent. */
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/* Global variable. */
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static int posixly_correct;
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/* Note that this evaluates C many times. */
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#define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
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#define CHAR char
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#define UCHAR unsigned char
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#define INT int
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#define FCT internal_fnmatch
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#define EXT ext_match
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#define END end_pattern
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#define STRUCT fnmatch_struct
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#define L_(CS) CS
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#define BTOWC(C) btowc (C)
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#define STRLEN(S) strlen (S)
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#define STRCAT(D, S) strcat (D, S)
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#define MEMPCPY(D, S, N) mempcpy (D, S, N)
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#define MEMCHR(S, C, N) memchr (S, C, N)
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#define WIDE_CHAR_VERSION 0
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#ifdef _LIBC
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# include <locale/weight.h>
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# define FINDIDX findidx
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#endif
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#include "fnmatch_loop.c"
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#define FOLD(c) ((flags & FNM_CASEFOLD) ? towlower (c) : (c))
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#define CHAR wchar_t
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#define UCHAR wint_t
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#define INT wint_t
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#define FCT internal_fnwmatch
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#define EXT ext_wmatch
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#define END end_wpattern
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#define L_(CS) L##CS
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#define BTOWC(C) (C)
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#define STRLEN(S) wcslen (S)
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#define STRCAT(D, S) wcscat (D, S)
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#define MEMPCPY(D, S, N) wmempcpy (D, S, N)
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#define MEMCHR(S, C, N) wmemchr (S, C, N)
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#define WIDE_CHAR_VERSION 1
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#ifdef _LIBC
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/* Change the name the header defines so it doesn't conflict with
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the <locale/weight.h> version included above. */
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# define findidx findidxwc
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# include <locale/weightwc.h>
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# undef findidx
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# define FINDIDX findidxwc
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#endif
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#undef IS_CHAR_CLASS
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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 consist of alphanumeric characters
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from the portable character set, and since the wide character encoding
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for a member of the portable character set is the same code point as
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its single-byte encoding, we can use a simplified method to convert the
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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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/* Test for a printable character from the portable character set. */
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#ifdef _LIBC
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if (*wcs < 0x20 || *wcs > 0x7e
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|| *wcs == 0x24 || *wcs == 0x40 || *wcs == 0x60)
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return (wctype_t) 0;
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#else
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switch (*wcs)
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{
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case L' ': case L'!': case L'"': case L'#': case L'%':
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case L'&': case L'\'': case L'(': case L')': case L'*':
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case L'+': case L',': case L'-': case L'.': case L'/':
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case L'0': case L'1': case L'2': case L'3': case L'4':
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case L'5': case L'6': case L'7': case L'8': case L'9':
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case L':': case L';': case L'<': case L'=': case L'>':
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case L'?':
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case L'A': case L'B': case L'C': case L'D': case L'E':
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case L'F': case L'G': case L'H': case L'I': case L'J':
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case L'K': case L'L': case L'M': case L'N': case L'O':
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case L'P': case L'Q': case L'R': case L'S': case L'T':
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case L'U': case L'V': case L'W': case L'X': case L'Y':
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case L'Z':
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case L'[': case L'\\': case L']': case L'^': case L'_':
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case L'a': case L'b': case L'c': case L'd': case L'e':
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case L'f': case L'g': case L'h': case L'i': case L'j':
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case L'k': case L'l': case L'm': case L'n': case L'o':
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case L'p': case L'q': case L'r': case L's': case L't':
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case L'u': case L'v': case L'w': case L'x': case L'y':
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case L'z': case L'{': case L'|': case L'}': case L'~':
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break;
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default:
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return (wctype_t) 0;
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}
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#endif
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/* Avoid overrunning the buffer. */
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if (cp == s + CHAR_CLASS_MAX_LENGTH)
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return (wctype_t) 0;
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*cp++ = (char) *wcs++;
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}
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while (*wcs != L'\0');
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*cp = '\0';
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return wctype (s);
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}
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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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static int
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fnmatch_convert_to_wide (const char *str, struct scratch_buffer *buf,
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size_t *n)
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{
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mbstate_t ps;
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memset (&ps, '\0', sizeof (ps));
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size_t nw = buf->length / sizeof (wchar_t);
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*n = strnlen (str, nw - 1);
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if (__glibc_likely (*n < nw))
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{
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const char *p = str;
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*n = mbsrtowcs (buf->data, &p, *n + 1, &ps);
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if (__glibc_unlikely (*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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if (p == NULL)
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return 0;
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memset (&ps, '\0', sizeof (ps));
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}
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*n = mbsrtowcs (NULL, &str, 0, &ps);
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if (__glibc_unlikely (*n == (size_t) -1))
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return -1;
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if (!scratch_buffer_set_array_size (buf, *n + 1, sizeof (wchar_t)))
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{
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__set_errno (ENOMEM);
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return -2;
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}
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assert (mbsinit (&ps));
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mbsrtowcs (buf->data, &str, *n + 1, &ps);
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return 0;
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}
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int
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fnmatch (const char *pattern, const char *string, int flags)
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{
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if (__glibc_unlikely (MB_CUR_MAX != 1))
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{
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size_t n;
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struct scratch_buffer wpattern;
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scratch_buffer_init (&wpattern);
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struct scratch_buffer wstring;
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scratch_buffer_init (&wstring);
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int r;
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/* Convert the strings into wide characters. Any conversion issue
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fallback to the ascii version. */
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r = fnmatch_convert_to_wide (pattern, &wpattern, &n);
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if (r == 0)
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{
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r = fnmatch_convert_to_wide (string, &wstring, &n);
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if (r == 0)
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r = internal_fnwmatch (wpattern.data, wstring.data,
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(wchar_t *) wstring.data + n,
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flags & FNM_PERIOD, flags, NULL);
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}
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scratch_buffer_free (&wstring);
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scratch_buffer_free (&wpattern);
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if (r == -2 || r == 0)
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return r;
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}
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return internal_fnmatch (pattern, string, string + strlen (string),
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flags & FNM_PERIOD, flags, NULL);
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}
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#undef fnmatch
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versioned_symbol (libc, __fnmatch, fnmatch, GLIBC_2_2_3);
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#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2_3)
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strong_alias (__fnmatch, __fnmatch_old)
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compat_symbol (libc, __fnmatch_old, fnmatch, GLIBC_2_0);
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#endif
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libc_hidden_ver (__fnmatch, fnmatch)
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