posix/wordexp.h

   1 /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #ifndef _WORDEXP_H
  20
  21 #define _WORDEXP_H      1
  22 #include <features.h>
  23
  24 __BEGIN_DECLS
  25
  26 /* Bits set in the FLAGS argument to `wordexp'.  */
  27 enum
  28   {
  29     WRDE_DOOFFS = (1 << 0),     /* Insert PWORDEXP->we_offs NULLs.  */
  30     WRDE_APPEND = (1 << 1),     /* Append to results of a previous call.  */
  31     WRDE_NOCMD = (1 << 2),      /* Don't do command substitution.  */
  32     WRDE_REUSE = (1 << 3),      /* Reuse storage in PWORDEXP.  */
  33     WRDE_SHOWERR = (1 << 4),    /* Don't redirect stderr to /dev/null.  */
  34     WRDE_UNDEF = (1 << 5),      /* Error for expanding undefined variables.  */
  35     __WRDE_FLAGS = (WRDE_DOOFFS | WRDE_APPEND | WRDE_NOCMD |
  36                     WRDE_REUSE | WRDE_SHOWERR | WRDE_UNDEF),
  37   };
  38
  39 /* Structure describing a word-expansion run.  */
  40 typedef struct
  41   {
  42     int we_wordc;               /* Count of words matched.  */
  43     char **we_wordv;            /* List of expanded words.  */
  44     int we_offs;                /* Slots to reserve in `we_wordv'.  */
  45   } wordexp_t;
  46
  47 /* Possible nonzero return values from `wordexp'.  */
  48 enum
  49   {
  50     WRDE_NOSPACE = 1,           /* Ran out of memory.  */
  51     WRDE_BADCHAR,               /* A metachar appears in the wrong place.  */
  52     WRDE_BADVAL,                /* Undefined var reference with WRDE_UNDEF.  */
  53     WRDE_CMDSUB,                /* Command substitution with WRDE_NOCMD.  */
  54     WRDE_SYNTAX                 /* Shell syntax error.  */
  55   };
  56
  57 /* Do word expansion of WORDS into PWORDEXP.  */
  58 extern int wordexp __P ((__const char *__words, wordexp_t * __pwordexp,
  59                          int __flags));
  60
  61 /* Free the storage allocated by a `wordexp' call.  */
  62 extern void wordfree __P ((wordexp_t *));
  63
  64 __END_DECLS
  65
  66 #endif /* wordexp.h  */