posix/glob.h

   1 /* Copyright (C) 1991, 92, 95, 96, 97, 98 Free Software Foundation, Inc.
   2
   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.
   7
   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.
  12
  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.  */
  17
  18 #ifndef _GLOB_H
  19 #define _GLOB_H 1
  20
  21 #ifdef  __cplusplus
  22 extern "C" {
  23 #endif
  24
  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.  */
  45
  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.  */
  55
  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
  73
  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.  */
  78
  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
  84
  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
  92
  93 /* Structure describing a globbing run.  */
  94 #if !defined _AMIGA && !defined VMS /* Buggy compiler.   */
  95 struct stat;
  96 #endif
  97 typedef struct
  98   {
  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.  */
 103
 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;
 112
 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));
 124
 125 /* Free storage allocated in PGLOB by a previous `glob' call.  */
 126 extern void globfree __P ((glob_t *__pglob));
 127
 128
 129 #ifdef _GNU_SOURCE
 130 /* Return nonzero if PATTERN contains any metacharacters.
 131    Metacharacters can be quoted with backslashes if QUOTE is nonzero.
 132
 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
 138
 139 #ifdef  __cplusplus
 140 }
 141 #endif
 142
 143 #endif /* glob.h  */