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[glibc.git] / posix / glob.h
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1 /* Copyright (C) 1991, 92, 95, 96, 97, 98 Free Software Foundation, Inc.
3 The GNU C Library is free software; you can redistribute it and/or
4 modify it under the terms of the GNU Library General Public License as
5 published by the Free Software Foundation; either version 2 of the
6 License, or (at your option) any later version.
8 The GNU C Library is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 Library General Public License for more details.
13 You should have received a copy of the GNU Library General Public
14 License along with the GNU C Library; see the file COPYING.LIB. If not,
15 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 Boston, MA 02111-1307, USA. */
18 #ifndef _GLOB_H
19 #define _GLOB_H 1
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
25 #undef __ptr_t
26 #if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
27 # undef __P
28 # undef __PMT
29 # define __P(protos) protos
30 # define __PMT(protos) protos
31 # define __ptr_t void *
32 # if !defined __GNUC__ || __GNUC__ < 2
33 # undef __const
34 # define __const const
35 # endif
36 #else /* Not C++ or ANSI C. */
37 # undef __P
38 # undef __PMT
39 # define __P(protos) ()
40 # define __PMT(protos) ()
41 # undef __const
42 # define __const
43 # define __ptr_t char *
44 #endif /* C++ or ANSI C. */
46 /* Bits set in the FLAGS argument to `glob'. */
47 #define GLOB_ERR (1 << 0)/* Return on read errors. */
48 #define GLOB_MARK (1 << 1)/* Append a slash to each name. */
49 #define GLOB_NOSORT (1 << 2)/* Don't sort the names. */
50 #define GLOB_DOOFFS (1 << 3)/* Insert PGLOB->gl_offs NULLs. */
51 #define GLOB_NOCHECK (1 << 4)/* If nothing matches, return the pattern. */
52 #define GLOB_APPEND (1 << 5)/* Append to results of a previous call. */
53 #define GLOB_NOESCAPE (1 << 6)/* Backslashes don't quote metacharacters. */
54 #define GLOB_PERIOD (1 << 7)/* Leading `.' can be matched by metachars. */
56 #if (!defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _BSD_SOURCE \
57 || defined _GNU_SOURCE)
58 # define GLOB_MAGCHAR (1 << 8)/* Set in gl_flags if any metachars seen. */
59 # define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions. */
60 # define GLOB_BRACE (1 << 10)/* Expand "{a,b}" to "a" "b". */
61 # define GLOB_NOMAGIC (1 << 11)/* If no magic chars, return the pattern. */
62 # define GLOB_TILDE (1 << 12)/* Expand ~user and ~ to home directories. */
63 # define GLOB_ONLYDIR (1 << 13)/* Match only directories. */
64 # define __GLOB_FLAGS (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
65 GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND| \
66 GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE| \
67 GLOB_NOMAGIC|GLOB_TILDE|GLOB_ONLYDIR)
68 #else
69 # define __GLOB_FLAGS (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
70 GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND| \
71 GLOB_PERIOD)
72 #endif
74 /* Error returns from `glob'. */
75 #define GLOB_NOSPACE 1 /* Ran out of memory. */
76 #define GLOB_ABORTED 2 /* Read error. */
77 #define GLOB_NOMATCH 3 /* No matches found. */
79 #ifdef _GNU_SOURCE
80 /* Previous versions of this file defined GLOB_ABEND instead of
81 GLOB_ABORTED. Provide a compatibility definition here. */
82 # define GLOB_ABEND GLOB_ABORTED
83 #endif
85 /* This value is returned if the implementation does not support
86 `glob'. Since this is not the case here it will never be
87 returned but the conformance test suites still require the symbol
88 to be defined. */
89 #ifdef _XOPEN_SOURCE
90 # define GLOB_NOSYS (-1)
91 #endif
93 /* Structure describing a globbing run. */
94 #if !defined _AMIGA && !defined VMS /* Buggy compiler. */
95 struct stat;
96 #endif
97 typedef struct
99 size_t gl_pathc; /* Count of paths matched by the pattern. */
100 char **gl_pathv; /* List of matched pathnames. */
101 size_t gl_offs; /* Slots to reserve in `gl_pathv'. */
102 int gl_flags; /* Set to FLAGS, maybe | GLOB_MAGCHAR. */
104 /* If the GLOB_ALTDIRFUNC flag is set, the following functions
105 are used instead of the normal file access functions. */
106 void (*gl_closedir) __PMT ((void *));
107 struct dirent *(*gl_readdir) __PMT ((void *));
108 __ptr_t (*gl_opendir) __PMT ((__const char *));
109 int (*gl_lstat) __PMT ((__const char *, struct stat *));
110 int (*gl_stat) __PMT ((__const char *, struct stat *));
111 } glob_t;
113 /* Do glob searching for PATTERN, placing results in PGLOB.
114 The bits defined above may be set in FLAGS.
115 If a directory cannot be opened or read and ERRFUNC is not nil,
116 it is called with the pathname that caused the error, and the
117 `errno' value from the failing call; if it returns non-zero
118 `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
119 If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
120 Otherwise, `glob' returns zero. */
121 extern int glob __P ((__const char *__pattern, int __flags,
122 int (*__errfunc) __P ((__const char *, int)),
123 glob_t *__pglob));
125 /* Free storage allocated in PGLOB by a previous `glob' call. */
126 extern void globfree __P ((glob_t *__pglob));
129 #ifdef _GNU_SOURCE
130 /* Return nonzero if PATTERN contains any metacharacters.
131 Metacharacters can be quoted with backslashes if QUOTE is nonzero.
133 This function is not part of the interface specified by POSIX.2
134 but several programs want to use it. */
135 extern int __glob_pattern_p __P ((__const char *__pattern, int __quote));
136 extern int glob_pattern_p __P ((__const char *__pattern, int __quote));
137 #endif
139 #ifdef __cplusplus
141 #endif
143 #endif /* glob.h */