posix/glob.h

   1 /* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
   2
   3 This 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.
   7
   8 This 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.
  12
  13 You should have received a copy of the GNU Library General Public
  14 License along with this library; see the file COPYING.LIB.  If
  15 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  16 Cambridge, MA 02139, USA.  */
  17
  18 #ifndef _GLOB_H
  19
  20 #define _GLOB_H 1
  21
  22 #ifdef  __cplusplus
  23 extern "C"
  24 {
  25 #endif
  26
  27 #undef  __ptr_t
  28 #if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
  29 #undef  __P
  30 #define __P(protos)     protos
  31 #define __ptr_t void *
  32 #else /* Not C++ or ANSI C.  */
  33 #undef  __P
  34 #define __P(protos)     ()
  35 #undef  const
  36 #define const
  37 #define __ptr_t char *
  38 #endif /* C++ or ANSI C.  */
  39
  40 /* Bits set in the FLAGS argument to `glob'.  */
  41 #define GLOB_ERR        (1 << 0)/* Return on read errors.  */
  42 #define GLOB_MARK       (1 << 1)/* Append a slash to each name.  */
  43 #define GLOB_NOSORT     (1 << 2)/* Don't sort the names.  */
  44 #define GLOB_DOOFFS     (1 << 3)/* Insert PGLOB->gl_offs NULLs.  */
  45 #define GLOB_NOCHECK    (1 << 4)/* If nothing matches, return the pattern.  */
  46 #define GLOB_APPEND     (1 << 5)/* Append to results of a previous call.  */
  47 #define GLOB_NOESCAPE   (1 << 6)/* Backslashes don't quote metacharacters.  */
  48 #define GLOB_PERIOD     (1 << 7)/* Leading `.' can be matched by metachars.  */
  49 #define __GLOB_FLAGS    (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
  50                          GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND|     \
  51                          GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE|     \
  52                          GLOB_NOMAGIC|GLOB_TILDE)
  53
  54 #if !defined (_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 2 || defined (_BSD_SOURCE)
  55 #define GLOB_MAGCHAR    (1 << 8)/* Set in gl_flags if any metachars seen.  */
  56 #define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions.  */
  57 #define GLOB_BRACE      (1 << 10)/* Expand "{a,b}" to "a" "b".  */
  58 #define GLOB_NOMAGIC    (1 << 11)/* If no magic chars, return the pattern.  */
  59 #define GLOB_TILDE      (1 <<12)/* Expand ~user and ~ to home directories.  */
  60 #endif
  61
  62 /* Error returns from `glob'.  */
  63 #define GLOB_NOSPACE    1       /* Ran out of memory.  */
  64 #define GLOB_ABEND      2       /* Read error.  */
  65 #define GLOB_NOMATCH    3       /* No matches found.  */
  66
  67 /* Structure describing a globbing run.  */
  68 struct stat;
  69 typedef struct
  70   {
  71     int gl_pathc;               /* Count of paths matched by the pattern.  */
  72     char **gl_pathv;            /* List of matched pathnames.  */
  73     int gl_offs;                /* Slots to reserve in `gl_pathv'.  */
  74     int gl_flags;               /* Set to FLAGS, maybe | GLOB_MAGCHAR.  */
  75
  76     /* If the GLOB_ALTDIRFUNC flag is set, the following functions
  77        are used instead of the normal file access functions.  */
  78     void (*gl_closedir) __P ((void *));
  79     struct dirent *(*gl_readdir) __P ((void *));
  80     __ptr_t (*gl_opendir) __P ((const char *));
  81     int (*gl_lstat) __P ((const char *, struct stat *));
  82     int (*gl_stat) __P ((const char *, struct stat *));
  83   } glob_t;
  84
  85 /* Do glob searching for PATTERN, placing results in PGLOB.
  86    The bits defined above may be set in FLAGS.
  87    If a directory cannot be opened or read and ERRFUNC is not nil,
  88    it is called with the pathname that caused the error, and the
  89    `errno' value from the failing call; if it returns non-zero
  90    `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
  91    If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
  92    Otherwise, `glob' returns zero.  */
  93 extern int glob __P ((const char *__pattern, int __flags,
  94                       int (*__errfunc) __P ((const char *, int)),
  95                       glob_t *__pglob));
  96
  97 /* Free storage allocated in PGLOB by a previous `glob' call.  */
  98 extern void globfree __P ((glob_t *__pglob));
  99
 100
 101 #if !defined (_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 2 || defined (_GNU_SOURCE)
 102 /* If they are not NULL, `glob' uses these functions to read directories.  */
 103 extern __ptr_t (*__glob_opendir_hook) __P ((const char *__directory));
 104 extern const char *(*__glob_readdir_hook) __P ((__ptr_t __stream));
 105 extern void (*__glob_closedir_hook) __P ((__ptr_t __stream));
 106 #endif
 107
 108 #ifdef  __cplusplus
 109 }
 110 #endif
 111
 112 #endif /* glob.h  */