contrib/grep/src/kwset.h

   1 /* kwset.h - header declaring the keyword set library.
   2    Copyright (C) 1989, 1998, 2005, 2007, 2009-2020 Free Software Foundation,
   3    Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  18    02110-1301, USA.  */
  19
  20 /* Written August 1989 by Mike Haertel.  */
  21
  22 #include <stddef.h>
  23 #include <stdbool.h>
  24
  25 struct kwsmatch
  26 {
  27   ptrdiff_t index;                      /* Index number of matching keyword.  */
  28   ptrdiff_t offset[1];          /* Offset of match.  */
  29   ptrdiff_t size[1];            /* Length of match.  */
  30 };
  31
  32 #include "arg-nonnull.h"
  33
  34 struct kwset;
  35 typedef struct kwset *kwset_t;
  36
  37 extern kwset_t kwsalloc (char const *);
  38 extern void kwsincr (kwset_t, char const *, ptrdiff_t);
  39 extern ptrdiff_t kwswords (kwset_t) _GL_ATTRIBUTE_PURE;
  40 extern void kwsprep (kwset_t);
  41 extern ptrdiff_t kwsexec (kwset_t, char const *, ptrdiff_t,
  42                           struct kwsmatch *, bool)
  43   _GL_ARG_NONNULL ((4));
  44 extern void kwsfree (kwset_t);