899 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
	
	
			
		
		
	
	
			899 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
	
	
| /*	$NetBSD: __glob13.c,v 1.1.2.1 1997/10/22 06:41:27 thorpej Exp $	*/
 | |
| 
 | |
| /*
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|  * Copyright (c) 1989, 1993
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|  *	The Regents of the University of California.  All rights reserved.
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|  *
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|  * This code is derived from software contributed to Berkeley by
 | |
|  * Guido van Rossum.
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|  *
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|  * Redistribution and use in source and binary forms, with or without
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|  * modification, are permitted provided that the following conditions
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|  * are met:
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|  * 1. Redistributions of source code must retain the above copyright
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|  *    notice, this list of conditions and the following disclaimer.
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|  * 2. Redistributions in binary form must reproduce the above copyright
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|  *    notice, this list of conditions and the following disclaimer in the
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|  *    documentation and/or other materials provided with the distribution.
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|  * 3. All advertising materials mentioning features or use of this software
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|  *    must display the following acknowledgement:
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|  *	This product includes software developed by the University of
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|  *	California, Berkeley and its contributors.
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|  * 4. Neither the name of the University nor the names of its contributors
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|  *    may be used to endorse or promote products derived from this software
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|  *    without specific prior written permission.
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|  *
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|  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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|  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 | |
|  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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|  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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|  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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|  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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|  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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|  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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|  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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|  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 | |
|  * SUCH DAMAGE.
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|  */
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| 
 | |
| #include <sys/cdefs.h>
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| 
 | |
| /*
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|  * glob(3) -- a superset of the one defined in POSIX 1003.2.
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|  *
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|  * The [!...] convention to negate a range is supported (SysV, Posix, ksh).
 | |
|  *
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|  * Optional extra services, controlled by flags not defined by POSIX:
 | |
|  *
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|  * GLOB_QUOTE:
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|  *	Escaping convention: \ inhibits any special meaning the following
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|  *	character might have (except \ at end of string is retained).
 | |
|  * GLOB_MAGCHAR:
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|  *	Set in gl_flags if pattern contained a globbing character.
 | |
|  * GLOB_NOMAGIC:
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|  *	Same as GLOB_NOCHECK, but it will only append pattern if it did
 | |
|  *	not contain any magic characters.  [Used in csh style globbing]
 | |
|  * GLOB_ALTDIRFUNC:
 | |
|  *	Use alternately specified directory access functions.
 | |
|  * GLOB_TILDE:
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|  *	expand ~user/foo to the /home/dir/of/user/foo
 | |
|  * GLOB_BRACE:
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|  *	expand {1,2}{a,b} to 1a 1b 2a 2b
 | |
|  * gl_matchc:
 | |
|  *	Number of matches in the current invocation of glob.
 | |
|  */
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| 
 | |
| /* CYGNUS LOCAL: don't include */
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| /* #include "namespace.h" */
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| /* end CYGNUS LOCAL */
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| 
 | |
| #include "winsup.h"
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| 
 | |
| #include <sys/param.h>
 | |
| #include <sys/stat.h>
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| 
 | |
| #include <ctype.h>
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| #include <dirent.h>
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| #include <errno.h>
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| #include <glob.h>
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| 
 | |
| #include <pwd.h>
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| #include <stdio.h>
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| #include <stdlib.h>
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| #include <string.h>
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| #include <unistd.h>
 | |
| #include <windows.h>
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| 
 | |
| #ifdef __weak_alias
 | |
| #ifdef __LIBC12_SOURCE__
 | |
| __weak_alias(glob,_glob);
 | |
| __weak_alias(globfree,_globfree);
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| #else
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| #error "XXX THESE ARE NOT RIGHT!"
 | |
| __weak_alias(__glob13,___glob13);
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| __weak_alias(__globfree13,___globfree13);
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| #endif /* __LIBC12_SOURCE__ */
 | |
| #endif /* __weak_alias */
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| 
 | |
| #ifdef __LIBC12_SOURCE__
 | |
| #define	STAT	stat12
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| #else
 | |
| #define	STAT	stat
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| #endif
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| 
 | |
| #define	DOLLAR		'$'
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| #define	DOT		'.'
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| #define	EOS		'\0'
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| #define	LBRACKET	'['
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| #define	NOT		'!'
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| #define	QUESTION	'?'
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| #define	QUOTE		'\\'
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| #define	RANGE		'-'
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| #define	RBRACKET	']'
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| #define	SEP		'/'
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| #define	STAR		'*'
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| #define	TILDE		'~'
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| #define	UNDERSCORE	'_'
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| #define	LBRACE		'{'
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| #define	RBRACE		'}'
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| #define	SLASH		'/'
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| #define	COMMA		','
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| 
 | |
| #ifndef DEBUG
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| 
 | |
| #define	M_QUOTE		0x8000
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| #define	M_PROTECT	0x4000
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| #define	M_MASK		0xffff
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| #define	M_ASCII		0x00ff
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| 
 | |
| typedef u_short Char;
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| 
 | |
| #else
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| 
 | |
| #define	M_QUOTE		0x80
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| #define	M_PROTECT	0x40
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| #define	M_MASK		0xff
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| #define	M_ASCII		0x7f
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| 
 | |
| typedef char Char;
 | |
| 
 | |
| #endif
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| 
 | |
| 
 | |
| #define	CHAR(c)		((Char)((c)&M_ASCII))
 | |
| #define	META(c)		((Char)((c)|M_QUOTE))
 | |
| #define	M_ALL		META('*')
 | |
| #define	M_END		META(']')
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| #define	M_NOT		META('!')
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| #define	M_ONE		META('?')
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| #define	M_RNG		META('-')
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| #define	M_SET		META('[')
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| #define	ismeta(c)	(((c)&M_QUOTE) != 0)
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| 
 | |
| 
 | |
| static int	 compare __P((const void *, const void *));
 | |
| static void	 g_Ctoc __P((const Char *, char *));
 | |
| static int	 g_lstat __P((Char *, struct STAT *, glob_t *));
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| static DIR	*g_opendir __P((Char *, glob_t *));
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| static Char	*g_strchr __P((Char *, int));
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| #ifdef notdef
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| static Char	*g_strcat __P((Char *, const Char *));
 | |
| #endif
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| static int	 g_stat __P((Char *, struct STAT *, glob_t *));
 | |
| static int	 glob0 __P((const Char *, glob_t *));
 | |
| static int	 glob1 __P((Char *, glob_t *));
 | |
| static int	 glob2 __P((Char *, Char *, Char *, glob_t *));
 | |
| static int	 glob3 __P((Char *, Char *, Char *, Char *, glob_t *));
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| static int	 globextend __P((const Char *, glob_t *));
 | |
| static const Char *	 globtilde __P((const Char *, Char *, glob_t *));
 | |
| static int	 globexp1 __P((const Char *, glob_t *));
 | |
| static int	 globexp2 __P((const Char *, const Char *, glob_t *, int *));
 | |
| static int	 match __P((Char *, Char *, Char *));
 | |
| #ifdef DEBUG
 | |
| static void	 qprintf __P((const char *, Char *));
 | |
| #endif
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| 
 | |
| #undef MAXPATHLEN
 | |
| #define MAXPATHLEN 16384
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| 
 | |
| extern BOOL ignore_case_with_glob;
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| 
 | |
| int
 | |
| glob(pattern, flags, errfunc, pglob)
 | |
| 	const char *pattern;
 | |
| 	int flags, (*errfunc) __P((const char *, int));
 | |
| 	glob_t *pglob;
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| {
 | |
| 	const u_char *patnext;
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| 	int c;
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| 	Char *bufnext, *bufend, patbuf[MAXPATHLEN+1];
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| 
 | |
| 	patnext = (u_char *) pattern;
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| 	if (!(flags & GLOB_APPEND)) {
 | |
| 		pglob->gl_pathc = 0;
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| 		pglob->gl_pathv = NULL;
 | |
| 		if (!(flags & GLOB_DOOFFS))
 | |
| 			pglob->gl_offs = 0;
 | |
| 	}
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| 	pglob->gl_flags = flags & ~GLOB_MAGCHAR;
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| 	pglob->gl_errfunc = errfunc;
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| 	pglob->gl_matchc = 0;
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| 
 | |
| 	bufnext = patbuf;
 | |
| 	bufend = bufnext + MAXPATHLEN;
 | |
| 	if (flags & GLOB_QUOTE) {
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| 		/* Protect the quoted characters. */
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| 		while (bufnext < bufend && (c = *patnext++) != EOS)
 | |
| 			if (c == QUOTE) {
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| 				if ((c = *patnext++) == EOS) {
 | |
| 					c = QUOTE;
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| 					--patnext;
 | |
| 				}
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| 				*bufnext++ = c | M_PROTECT;
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| 			}
 | |
| 			else
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| 				*bufnext++ = c;
 | |
| 	}
 | |
| 	else
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| 	    while (bufnext < bufend && (c = *patnext++) != EOS)
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| 		    *bufnext++ = c;
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| 	*bufnext = EOS;
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| 
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| 	if (flags & GLOB_BRACE)
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| 	    return globexp1(patbuf, pglob);
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| 	else
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| 	    return glob0(patbuf, pglob);
 | |
| }
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| 
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| /*
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|  * Expand recursively a glob {} pattern. When there is no more expansion
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|  * invoke the standard globbing routine to glob the rest of the magic
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|  * characters
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|  */
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| static int globexp1(pattern, pglob)
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| 	const Char *pattern;
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| 	glob_t *pglob;
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| {
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| 	const Char* ptr = pattern;
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| 	int rv;
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| 
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| 	/* Protect a single {}, for find(1), like csh */
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| 	if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
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| 		return glob0(pattern, pglob);
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| 
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| 	while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL)
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| 		if (!globexp2(ptr, pattern, pglob, &rv))
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| 			return rv;
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| 
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| 	return glob0(pattern, pglob);
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| }
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| 
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| 
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| /*
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|  * Recursive brace globbing helper. Tries to expand a single brace.
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|  * If it succeeds then it invokes globexp1 with the new pattern.
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|  * If it fails then it tries to glob the rest of the pattern and returns.
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|  */
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| static int globexp2(ptr, pattern, pglob, rv)
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| 	const Char *ptr, *pattern;
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| 	glob_t *pglob;
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| 	int *rv;
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| {
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| 	int     i;
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| 	Char   *lm, *ls;
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| 	const Char *pe, *pm, *pl;
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| 	Char    patbuf[MAXPATHLEN + 1];
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| 
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| 	/* copy part up to the brace */
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| 	for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
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| 		continue;
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| 	ls = lm;
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| 
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| 	/* Find the balanced brace */
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| 	for (i = 0, pe = ++ptr; *pe; pe++)
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| 		if (*pe == LBRACKET) {
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| 			/* Ignore everything between [] */
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| 			for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
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| 				continue;
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| 			if (*pe == EOS) {
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| 				/*
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| 				 * We could not find a matching RBRACKET.
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| 				 * Ignore and just look for RBRACE
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| 				 */
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| 				pe = pm;
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| 			}
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| 		}
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| 		else if (*pe == LBRACE)
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| 			i++;
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| 		else if (*pe == RBRACE) {
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| 			if (i == 0)
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| 				break;
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| 			i--;
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| 		}
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| 
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| 	/* Non matching braces; just glob the pattern */
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| 	if (i != 0 || *pe == EOS) {
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| 		*rv = glob0(patbuf, pglob);
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| 		return 0;
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| 	}
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| 
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| 	for (i = 0, pl = pm = ptr; pm <= pe; pm++)
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| 		switch (*pm) {
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| 		case LBRACKET:
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| 			/* Ignore everything between [] */
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| 			for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
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| 				continue;
 | |
| 			if (*pm == EOS) {
 | |
| 				/*
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| 				 * We could not find a matching RBRACKET.
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| 				 * Ignore and just look for RBRACE
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| 				 */
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| 				pm = pl;
 | |
| 			}
 | |
| 			break;
 | |
| 
 | |
| 		case LBRACE:
 | |
| 			i++;
 | |
| 			break;
 | |
| 
 | |
| 		case RBRACE:
 | |
| 			if (i) {
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| 			    i--;
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| 			    break;
 | |
| 			}
 | |
| 			/* FALLTHROUGH */
 | |
| 		case COMMA:
 | |
| 			if (i && *pm == COMMA)
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| 				break;
 | |
| 			else {
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| 				/* Append the current string */
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| 				for (lm = ls; (pl < pm); *lm++ = *pl++)
 | |
| 					continue;
 | |
| 				/*
 | |
| 				 * Append the rest of the pattern after the
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| 				 * closing brace
 | |
| 				 */
 | |
| 				for (pl = pe + 1; (*lm++ = *pl++) != EOS;)
 | |
| 					continue;
 | |
| 
 | |
| 				/* Expand the current pattern */
 | |
| #ifdef DEBUG
 | |
| 				qprintf("globexp2:", patbuf);
 | |
| #endif
 | |
| 				*rv = globexp1(patbuf, pglob);
 | |
| 
 | |
| 				/* move after the comma, to the next string */
 | |
| 				pl = pm + 1;
 | |
| 			}
 | |
| 			break;
 | |
| 
 | |
| 		default:
 | |
| 			break;
 | |
| 		}
 | |
| 	*rv = 0;
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * expand tilde from the passwd file.
 | |
|  */
 | |
| static const Char *
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| globtilde(pattern, patbuf, pglob)
 | |
| 	const Char *pattern;
 | |
| 	Char *patbuf;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	struct passwd *pwd;
 | |
| 	char *h;
 | |
| 	const Char *p;
 | |
| 	Char *b;
 | |
| 
 | |
| 	if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
 | |
| 		return pattern;
 | |
| 
 | |
| 	/* Copy up to the end of the string or / */
 | |
| 	for (p = pattern + 1, h = (char *) patbuf; *p && *p != SLASH;
 | |
| 	     *h++ = *p++)
 | |
| 		continue;
 | |
| 
 | |
| 	*h = EOS;
 | |
| 
 | |
| 	if (((char *) patbuf)[0] == EOS) {
 | |
| 		/*
 | |
| 		 * handle a plain ~ or ~/ by expanding $HOME
 | |
| 		 * first and then trying the password file
 | |
| 		 */
 | |
| 		if ((h = getenv("HOME")) == NULL) {
 | |
| 			if ((pwd = getpwuid(getuid())) == NULL)
 | |
| 				return pattern;
 | |
| 			else
 | |
| 				h = pwd->pw_dir;
 | |
| 		}
 | |
| 	}
 | |
| 	else {
 | |
| 		/*
 | |
| 		 * Expand a ~user
 | |
| 		 */
 | |
| 		if ((pwd = getpwnam((char*) patbuf)) == NULL)
 | |
| 			return pattern;
 | |
| 		else
 | |
| 			h = pwd->pw_dir;
 | |
| 	}
 | |
| 
 | |
| 	/* Copy the home directory */
 | |
| 	for (b = patbuf; *h; *b++ = *h++)
 | |
| 		continue;
 | |
| 
 | |
| 	/* Append the rest of the pattern */
 | |
| 	while ((*b++ = *p++) != EOS)
 | |
| 		continue;
 | |
| 
 | |
| 	return patbuf;
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * The main glob() routine: compiles the pattern (optionally processing
 | |
|  * quotes), calls glob1() to do the real pattern matching, and finally
 | |
|  * sorts the list (unless unsorted operation is requested).  Returns 0
 | |
|  * if things went well, nonzero if errors occurred.  It is not an error
 | |
|  * to find no matches.
 | |
|  */
 | |
| static int
 | |
| glob0(pattern, pglob)
 | |
| 	const Char *pattern;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	const Char *qpatnext;
 | |
| 	int c, err, oldpathc;
 | |
| 	Char *bufnext, patbuf[MAXPATHLEN+1];
 | |
| 
 | |
| 	qpatnext = globtilde(pattern, patbuf, pglob);
 | |
| 	oldpathc = pglob->gl_pathc;
 | |
| 	bufnext = patbuf;
 | |
| 
 | |
| 	/* We don't need to check for buffer overflow any more. */
 | |
| 	while ((c = *qpatnext++) != EOS) {
 | |
| 		switch (c) {
 | |
| 		case LBRACKET:
 | |
| 			c = *qpatnext;
 | |
| 			if (c == NOT)
 | |
| 				++qpatnext;
 | |
| 			if (*qpatnext == EOS ||
 | |
| 			    g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) {
 | |
| 				*bufnext++ = LBRACKET;
 | |
| 				if (c == NOT)
 | |
| 					--qpatnext;
 | |
| 				break;
 | |
| 			}
 | |
| 			*bufnext++ = M_SET;
 | |
| 			if (c == NOT)
 | |
| 				*bufnext++ = M_NOT;
 | |
| 			c = *qpatnext++;
 | |
| 			do {
 | |
| 				*bufnext++ = CHAR(c);
 | |
| 				if (*qpatnext == RANGE &&
 | |
| 				    (c = qpatnext[1]) != RBRACKET) {
 | |
| 					*bufnext++ = M_RNG;
 | |
| 					*bufnext++ = CHAR(c);
 | |
| 					qpatnext += 2;
 | |
| 				}
 | |
| 			} while ((c = *qpatnext++) != RBRACKET);
 | |
| 			pglob->gl_flags |= GLOB_MAGCHAR;
 | |
| 			*bufnext++ = M_END;
 | |
| 			break;
 | |
| 		case QUESTION:
 | |
| 			pglob->gl_flags |= GLOB_MAGCHAR;
 | |
| 			*bufnext++ = M_ONE;
 | |
| 			break;
 | |
| 		case STAR:
 | |
| 			pglob->gl_flags |= GLOB_MAGCHAR;
 | |
| 			/* collapse adjacent stars to one,
 | |
| 			 * to avoid exponential behavior
 | |
| 			 */
 | |
| 			if (bufnext == patbuf || bufnext[-1] != M_ALL)
 | |
| 			    *bufnext++ = M_ALL;
 | |
| 			break;
 | |
| 		default:
 | |
| 			*bufnext++ = CHAR(c);
 | |
| 			break;
 | |
| 		}
 | |
| 	}
 | |
| 	*bufnext = EOS;
 | |
| #ifdef DEBUG
 | |
| 	qprintf("glob0:", patbuf);
 | |
| #endif
 | |
| 
 | |
| 	if ((err = glob1(patbuf, pglob)) != 0)
 | |
| 		return(err);
 | |
| 
 | |
| 	/*
 | |
| 	 * If there was no match we are going to append the pattern
 | |
| 	 * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
 | |
| 	 * and the pattern did not contain any magic characters
 | |
| 	 * GLOB_NOMAGIC is there just for compatibility with csh.
 | |
| 	 */
 | |
| 	if (pglob->gl_pathc == oldpathc &&
 | |
| 	    ((pglob->gl_flags & GLOB_NOCHECK) ||
 | |
| 	      ((pglob->gl_flags & GLOB_NOMAGIC) &&
 | |
| 	       !(pglob->gl_flags & GLOB_MAGCHAR))))
 | |
| 		return(globextend(pattern, pglob));
 | |
| 	else if (!(pglob->gl_flags & GLOB_NOSORT))
 | |
| 		qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
 | |
| 		    pglob->gl_pathc - oldpathc, sizeof(char *), compare);
 | |
| 	return(0);
 | |
| }
 | |
| 
 | |
| static int
 | |
| compare(p, q)
 | |
| 	const void *p, *q;
 | |
| {
 | |
| 	return(strcmp(*(char **)p, *(char **)q));
 | |
| }
 | |
| 
 | |
| static int
 | |
| glob1(pattern, pglob)
 | |
| 	Char *pattern;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	Char pathbuf[MAXPATHLEN+1];
 | |
| 
 | |
| 	/* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
 | |
| 	if (*pattern == EOS)
 | |
| 		return(0);
 | |
| 	return(glob2(pathbuf, pathbuf, pattern, pglob));
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * The functions glob2 and glob3 are mutually recursive; there is one level
 | |
|  * of recursion for each segment in the pattern that contains one or more
 | |
|  * meta characters.
 | |
|  */
 | |
| static int
 | |
| glob2(pathbuf, pathend, pattern, pglob)
 | |
| 	Char *pathbuf, *pathend, *pattern;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	struct STAT sb;
 | |
| 	Char *p, *q;
 | |
| 	int anymeta;
 | |
| 
 | |
| 	/*
 | |
| 	 * Loop over pattern segments until end of pattern or until
 | |
| 	 * segment with meta character found.
 | |
| 	 */
 | |
| 	for (anymeta = 0;;) {
 | |
| 		if (*pattern == EOS) {		/* End of pattern? */
 | |
| 			*pathend = EOS;
 | |
| 			if (g_lstat(pathbuf, &sb, pglob))
 | |
| 				return(0);
 | |
| 
 | |
| 			if (((pglob->gl_flags & GLOB_MARK) &&
 | |
| 			    pathend[-1] != SEP) && (S_ISDIR(sb.st_mode)
 | |
| 			    || (S_ISLNK(sb.st_mode) &&
 | |
| 			    (g_stat(pathbuf, &sb, pglob) == 0) &&
 | |
| 			    S_ISDIR(sb.st_mode)))) {
 | |
| 				*pathend++ = SEP;
 | |
| 				*pathend = EOS;
 | |
| 			}
 | |
| 			++pglob->gl_matchc;
 | |
| 			return(globextend(pathbuf, pglob));
 | |
| 		}
 | |
| 
 | |
| 		/* Find end of next segment, copy tentatively to pathend. */
 | |
| 		q = pathend;
 | |
| 		p = pattern;
 | |
| 		while (*p != EOS && *p != SEP) {
 | |
| 			if (ismeta(*p))
 | |
| 				anymeta = 1;
 | |
| 			*q++ = *p++;
 | |
| 		}
 | |
| 
 | |
| 		if (!anymeta) {		/* No expansion, do next segment. */
 | |
| 			pathend = q;
 | |
| 			pattern = p;
 | |
| 			while (*pattern == SEP)
 | |
| 				*pathend++ = *pattern++;
 | |
| 		} else			/* Need expansion, recurse. */
 | |
| 			return(glob3(pathbuf, pathend, pattern, p, pglob));
 | |
| 	}
 | |
| 	/* NOTREACHED */
 | |
| }
 | |
| 
 | |
| static int
 | |
| glob3(pathbuf, pathend, pattern, restpattern, pglob)
 | |
| 	Char *pathbuf, *pathend, *pattern, *restpattern;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	register struct dirent *dp;
 | |
| 	DIR *dirp;
 | |
| 	int err;
 | |
| 	char buf[MAXPATHLEN];
 | |
| 
 | |
| 	/*
 | |
| 	 * The readdirfunc declaration can't be prototyped, because it is
 | |
| 	 * assigned, below, to two functions which are prototyped in glob.h
 | |
| 	 * and dirent.h as taking pointers to differently typed opaque
 | |
| 	 * structures.
 | |
| 	 */
 | |
| 	struct dirent *(*readdirfunc) __P((void *));
 | |
| 
 | |
| 	*pathend = EOS;
 | |
| 	errno = 0;
 | |
| 
 | |
| 	if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
 | |
| 		/* TODO: don't call for ENOENT or ENOTDIR? */
 | |
| 		if (pglob->gl_errfunc) {
 | |
| 			g_Ctoc(pathbuf, buf);
 | |
| 			if (pglob->gl_errfunc(buf, errno) ||
 | |
| 			    pglob->gl_flags & GLOB_ERR)
 | |
| 				return (GLOB_ABEND);
 | |
| 		}
 | |
| 		return(0);
 | |
| 	}
 | |
| 
 | |
| 	err = 0;
 | |
| 
 | |
| 	/* Search directory for matching names. */
 | |
| 	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
 | |
| 		readdirfunc = pglob->gl_readdir;
 | |
| 	else
 | |
| 		readdirfunc = (struct dirent *(*)__P((void *))) readdir;
 | |
| 	while ((dp = (*readdirfunc)(dirp))) {
 | |
| 		register u_char *sc;
 | |
| 		register Char *dc;
 | |
| 
 | |
| 		/* Initial DOT must be matched literally. */
 | |
| 		if (dp->d_name[0] == DOT && *pattern != DOT)
 | |
| 			continue;
 | |
| 		for (sc = (u_char *) dp->d_name, dc = pathend;
 | |
| 		     (*dc++ = *sc++) != EOS;)
 | |
| 			continue;
 | |
| 		if (!match(pathend, pattern, restpattern)) {
 | |
| 			*pathend = EOS;
 | |
| 			continue;
 | |
| 		}
 | |
| 		err = glob2(pathbuf, --dc, restpattern, pglob);
 | |
| 		if (err)
 | |
| 			break;
 | |
| 	}
 | |
| 
 | |
| 	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
 | |
| 		(*pglob->gl_closedir)(dirp);
 | |
| 	else
 | |
| 		closedir(dirp);
 | |
| 	return(err);
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * Extend the gl_pathv member of a glob_t structure to accomodate a new item,
 | |
|  * add the new item, and update gl_pathc.
 | |
|  *
 | |
|  * This assumes the BSD realloc, which only copies the block when its size
 | |
|  * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic
 | |
|  * behavior.
 | |
|  *
 | |
|  * Return 0 if new item added, error code if memory couldn't be allocated.
 | |
|  *
 | |
|  * Invariant of the glob_t structure:
 | |
|  *	Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and
 | |
|  *	gl_pathv points to (gl_offs + gl_pathc + 1) items.
 | |
|  */
 | |
| static int
 | |
| globextend(path, pglob)
 | |
| 	const Char *path;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	register char **pathv;
 | |
| 	register int i;
 | |
| 	u_int newsize;
 | |
| 	char *copy;
 | |
| 	const Char *p;
 | |
| 
 | |
| 	newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
 | |
| 	pathv = pglob->gl_pathv ?
 | |
| 		    realloc((char *)pglob->gl_pathv, newsize) :
 | |
| 		    malloc(newsize);
 | |
| 	if (pathv == NULL)
 | |
| 		return(GLOB_NOSPACE);
 | |
| 
 | |
| 	if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
 | |
| 		/* first time around -- clear initial gl_offs items */
 | |
| 		pathv += pglob->gl_offs;
 | |
| 		for (i = pglob->gl_offs; --i >= 0;)
 | |
| 			*--pathv = NULL;
 | |
| 	}
 | |
| 	pglob->gl_pathv = pathv;
 | |
| 
 | |
| 	for (p = path; *p++;)
 | |
| 		continue;
 | |
| 	if ((copy = malloc(p - path)) != NULL) {
 | |
| 		g_Ctoc(path, copy);
 | |
| 		pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
 | |
| 	}
 | |
| 	pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
 | |
| 	return(copy == NULL ? GLOB_NOSPACE : 0);
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * pattern matching function for filenames.  Each occurrence of the *
 | |
|  * pattern causes a recursion level.
 | |
|  */
 | |
| static int
 | |
| match(name, pat, patend)
 | |
| 	register Char *name, *pat, *patend;
 | |
| {
 | |
| 	int ok, negate_range;
 | |
| 	Char c, k;
 | |
| 
 | |
| 	while (pat < patend) {
 | |
| 		c = *pat++;
 | |
| 		switch (c & M_MASK) {
 | |
| 		case M_ALL:
 | |
| 			if (pat == patend)
 | |
| 				return(1);
 | |
| 			do
 | |
| 			    if (match(name, pat, patend))
 | |
| 				    return(1);
 | |
| 			while (*name++ != EOS);
 | |
| 			return(0);
 | |
| 		case M_ONE:
 | |
| 			if (*name++ == EOS)
 | |
| 				return(0);
 | |
| 			break;
 | |
| 		case M_SET:
 | |
| 			ok = 0;
 | |
| 			if ((k = *name++) == EOS)
 | |
| 				return(0);
 | |
| 			if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS)
 | |
| 				++pat;
 | |
| 			if (ignore_case_with_glob)
 | |
| 			  {
 | |
| 			    while (((c = *pat++) & M_MASK) != M_END)
 | |
| 			      if ((*pat & M_MASK) == M_RNG) {
 | |
| 				if (tolower(c) <= tolower(k) && tolower(k) <= tolower(pat[1]))
 | |
| 				  ok = 1;
 | |
| 				pat += 2;
 | |
| 			      } else if (tolower(c) == tolower(k))
 | |
| 				ok = 1;
 | |
| 			  }
 | |
| 			else
 | |
| 			  {
 | |
| 			    while (((c = *pat++) & M_MASK) != M_END)
 | |
| 			      if ((*pat & M_MASK) == M_RNG) {
 | |
| 				if (c <= k && k <= pat[1])
 | |
| 				  ok = 1;
 | |
| 				pat += 2;
 | |
| 			      } else if (c == k)
 | |
| 				ok = 1;
 | |
| 			  }
 | |
| 			if (ok == negate_range)
 | |
| 				return(0);
 | |
| 			break;
 | |
| 		default:
 | |
| 			if (ignore_case_with_glob)
 | |
| 			  {
 | |
| 			    if (tolower(*name) != tolower(c))
 | |
| 			      return(0);
 | |
| 			    ++name;
 | |
| 			  }
 | |
| 			else
 | |
| 			  {
 | |
| 			    if (*name++ != c)
 | |
| 			      return(0);
 | |
| 			  }
 | |
| 			break;
 | |
| 		}
 | |
| 	}
 | |
| 	return(*name == EOS);
 | |
| }
 | |
| 
 | |
| /* Free allocated data belonging to a glob_t structure. */
 | |
| void
 | |
| globfree(pglob)
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	register int i;
 | |
| 	register char **pp;
 | |
| 
 | |
| 	if (pglob->gl_pathv != NULL) {
 | |
| 		pp = pglob->gl_pathv + pglob->gl_offs;
 | |
| 		for (i = pglob->gl_pathc; i--; ++pp)
 | |
| 			if (*pp)
 | |
| 				free(*pp);
 | |
| 		free(pglob->gl_pathv);
 | |
| 	}
 | |
| }
 | |
| 
 | |
| static DIR *
 | |
| g_opendir(str, pglob)
 | |
| 	register Char *str;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	char buf[MAXPATHLEN];
 | |
| 
 | |
| 	if (!*str)
 | |
| 		strcpy(buf, ".");
 | |
| 	else
 | |
| 		g_Ctoc(str, buf);
 | |
| 
 | |
| 	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
 | |
| 		return((*pglob->gl_opendir)(buf));
 | |
| 
 | |
| 	return(opendir(buf));
 | |
| }
 | |
| 
 | |
| static int
 | |
| g_lstat(fn, sb, pglob)
 | |
| 	register Char *fn;
 | |
| 	struct STAT *sb;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	char buf[MAXPATHLEN];
 | |
| 
 | |
| 	g_Ctoc(fn, buf);
 | |
| 	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
 | |
| 		return((*pglob->gl_lstat)(buf, sb));
 | |
| 	return(lstat(buf, sb));
 | |
| }
 | |
| 
 | |
| static int
 | |
| g_stat(fn, sb, pglob)
 | |
| 	register Char *fn;
 | |
| 	struct STAT *sb;
 | |
| 	glob_t *pglob;
 | |
| {
 | |
| 	char buf[MAXPATHLEN];
 | |
| 
 | |
| 	g_Ctoc(fn, buf);
 | |
| 	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
 | |
| 		return((*pglob->gl_stat)(buf, sb));
 | |
| 	return(stat(buf, sb));
 | |
| }
 | |
| 
 | |
| static Char *
 | |
| g_strchr(str, ch)
 | |
| 	Char *str;
 | |
| 	int ch;
 | |
| {
 | |
| 	do {
 | |
| 		if (*str == ch)
 | |
| 			return (str);
 | |
| 	} while (*str++);
 | |
| 	return (NULL);
 | |
| }
 | |
| 
 | |
| #ifdef notdef
 | |
| static Char *
 | |
| g_strcat(dst, src)
 | |
| 	Char *dst;
 | |
| 	const Char* src;
 | |
| {
 | |
| 	Char *sdst = dst;
 | |
| 
 | |
| 	while (*dst++)
 | |
| 		continue;
 | |
| 	--dst;
 | |
| 	while((*dst++ = *src++) != EOS)
 | |
| 	    continue;
 | |
| 
 | |
| 	return (sdst);
 | |
| }
 | |
| #endif
 | |
| 
 | |
| static void
 | |
| g_Ctoc(str, buf)
 | |
| 	register const Char *str;
 | |
| 	char *buf;
 | |
| {
 | |
| 	register char *dc;
 | |
| 
 | |
| 	for (dc = buf; (*dc++ = *str++) != EOS;)
 | |
| 		continue;
 | |
| }
 | |
| 
 | |
| #ifdef DEBUG
 | |
| static void
 | |
| qprintf(str, s)
 | |
| 	const char *str;
 | |
| 	register Char *s;
 | |
| {
 | |
| 	register Char *p;
 | |
| 
 | |
| 	(void)printf("%s:\n", str);
 | |
| 	for (p = s; *p; p++)
 | |
| 		(void)printf("%c", CHAR(*p));
 | |
| 	(void)printf("\n");
 | |
| 	for (p = s; *p; p++)
 | |
| 		(void)printf("%c", *p & M_PROTECT ? '"' : ' ');
 | |
| 	(void)printf("\n");
 | |
| 	for (p = s; *p; p++)
 | |
| 		(void)printf("%c", ismeta(*p) ? '_' : ' ');
 | |
| 	(void)printf("\n");
 | |
| }
 | |
| #endif
 |