readline/histlib.h

   1 /* histlib.h -- internal definitions for the history library. */
   2
   3 /* Copyright (C) 1989-2009 Free Software Foundation, Inc.
   4
   5    This file contains the GNU History Library (History), a set of
   6    routines for managing the text of previously typed lines.
   7
   8    History is free software: you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation, either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    History is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with History.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #if !defined (_HISTLIB_H_)
  23 #define _HISTLIB_H_
  24
  25 #if defined (HAVE_STRING_H)
  26 #  include <string.h>
  27 #else
  28 #  include <strings.h>
  29 #endif /* !HAVE_STRING_H */
  30
  31 #if !defined (STREQ)
  32 #define STREQ(a, b)     (((a)[0] == (b)[0]) && (strcmp ((a), (b)) == 0))
  33 #define STREQN(a, b, n) (((n) == 0) ? (1) \
  34                                     : ((a)[0] == (b)[0]) && (strncmp ((a), (b), (n)) == 0))
  35 #endif
  36
  37 #ifndef savestring
  38 #define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x))
  39 #endif
  40
  41 #ifndef whitespace
  42 #define whitespace(c) (((c) == ' ') || ((c) == '\t'))
  43 #endif
  44
  45 #ifndef _rl_digit_p
  46 #define _rl_digit_p(c)  ((c) >= '0' && (c) <= '9')
  47 #endif
  48
  49 #ifndef _rl_digit_value
  50 #define _rl_digit_value(c) ((c) - '0')
  51 #endif
  52
  53 #ifndef member
  54 #  ifndef strchr
  55 extern char *strchr ();
  56 #  endif
  57 #define member(c, s) ((c) ? ((char *)strchr ((s), (c)) != (char *)NULL) : 0)
  58 #endif
  59
  60 #ifndef FREE
  61 #  define FREE(x)       if (x) free (x)
  62 #endif
  63
  64 /* Possible history errors passed to hist_error. */
  65 #define EVENT_NOT_FOUND 0
  66 #define BAD_WORD_SPEC   1
  67 #define SUBST_FAILED    2
  68 #define BAD_MODIFIER    3
  69 #define NO_PREV_SUBST   4
  70
  71 /* Possible definitions for history starting point specification. */
  72 #define ANCHORED_SEARCH 1
  73 #define NON_ANCHORED_SEARCH 0
  74
  75 /* Possible definitions for what style of writing the history file we want. */
  76 #define HISTORY_APPEND 0
  77 #define HISTORY_OVERWRITE 1
  78
  79 /* Some variable definitions shared across history source files. */
  80 extern int history_offset;
  81
  82 #endif /* !_HISTLIB_H_ */