src/set-fields.h

   1 /* set-fields.h -- parse field list argument
   2
   3    Copyright (C) 2015-2017 Free Software Foundation, 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 of the License, or
   8    (at your option) 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, see <http://www.gnu.org/licenses/>.  */
  17 #ifndef SET_FIELDS_H
  18 # define SET_FIELDS_H
  19
  20 struct field_range_pair
  21   {
  22     size_t lo;
  23     size_t hi;
  24   };
  25
  26 /* Array of `struct range_pair' holding all the finite ranges. */
  27 extern struct field_range_pair *frp;
  28
  29 /* Number of finite ranges specified by the user. */
  30 extern size_t n_frp;
  31
  32 /* field list parsing options */
  33 enum
  34 {
  35   SETFLD_ALLOW_DASH = 0x01,     /* allow single dash meaning 'all fields' */
  36   SETFLD_COMPLEMENT = 0x02,     /* complement the field list */
  37   SETFLD_ERRMSG_USE_POS = 0x04  /* when reporting errors, say 'position' instead
  38                                    of 'field' (used with cut -b/-c) */
  39 };
  40
  41 /* allocates and initializes the FRP array and N_FRP count */
  42 extern void set_fields (const char *fieldstr, unsigned int options);
  43
  44 /* frees memory allocated by set_fields() */
  45 extern void reset_fields (void);
  46
  47 #endif