lib/readline/keymaps.c

   1 /* keymaps.c -- Functions and keymaps for the GNU Readline library. */
   2
   3 /* Copyright (C) 1988,1989 Free Software Foundation, Inc.
   4
   5    This file is part of GNU Readline, a library for reading lines
   6    of text with interactive input and history editing.
   7
   8    Readline is free software; you can redistribute it and/or modify it
   9    under the terms of the GNU General Public License as published by the
  10    Free Software Foundation; either version 1, or (at your option) any
  11    later version.
  12
  13    Readline is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with Readline; see the file COPYING.  If not, write to the Free
  20    Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
  21 #define READLINE_LIBRARY
  22
  23 #if defined (HAVE_CONFIG_H)
  24 #  include <config.h>
  25 #endif
  26
  27 #if defined (HAVE_STDLIB_H)
  28 #  include <stdlib.h>
  29 #else
  30 #  include "ansi_stdlib.h"
  31 #endif /* HAVE_STDLIB_H */
  32
  33 #include "rlconf.h"
  34 #include "keymaps.h"
  35 #include "emacs_keymap.c"
  36
  37 #if defined (VI_MODE)
  38 #include "vi_keymap.c"
  39 #endif
  40
  41 extern int rl_do_lowercase_version ();
  42 extern int rl_rubout (), rl_insert ();
  43
  44 extern char *xmalloc (), *xrealloc ();
  45
  46 /* **************************************************************** */
  47 /*                                                                  */
  48 /*                    Functions for manipulating Keymaps.           */
  49 /*                                                                  */
  50 /* **************************************************************** */
  51
  52
  53 /* Return a new, empty keymap.
  54    Free it with free() when you are done. */
  55 Keymap
  56 rl_make_bare_keymap ()
  57 {
  58   register int i;
  59   Keymap keymap = (Keymap)xmalloc (KEYMAP_SIZE * sizeof (KEYMAP_ENTRY));
  60
  61   for (i = 0; i < KEYMAP_SIZE; i++)
  62     {
  63       keymap[i].type = ISFUNC;
  64       keymap[i].function = (Function *)NULL;
  65     }
  66
  67   for (i = 'A'; i < ('Z' + 1); i++)
  68     {
  69       keymap[i].type = ISFUNC;
  70       keymap[i].function = rl_do_lowercase_version;
  71     }
  72
  73   return (keymap);
  74 }
  75
  76 /* Return a new keymap which is a copy of MAP. */
  77 Keymap
  78 rl_copy_keymap (map)
  79      Keymap map;
  80 {
  81   register int i;
  82   Keymap temp = rl_make_bare_keymap ();
  83
  84   for (i = 0; i < KEYMAP_SIZE; i++)
  85     {
  86       temp[i].type = map[i].type;
  87       temp[i].function = map[i].function;
  88     }
  89   return (temp);
  90 }
  91
  92 /* Return a new keymap with the printing characters bound to rl_insert,
  93    the uppercase Meta characters bound to run their lowercase equivalents,
  94    and the Meta digits bound to produce numeric arguments. */
  95 Keymap
  96 rl_make_keymap ()
  97 {
  98   register int i;
  99   Keymap newmap;
 100
 101   newmap = rl_make_bare_keymap ();
 102
 103   /* All ASCII printing characters are self-inserting. */
 104   for (i = ' '; i < 127; i++)
 105     newmap[i].function = rl_insert;
 106
 107   newmap[TAB].function = rl_insert;
 108   newmap[RUBOUT].function = rl_rubout;  /* RUBOUT == 127 */
 109   newmap[CTRL('H')].function = rl_rubout;
 110
 111 #if KEYMAP_SIZE > 128
 112   /* Printing characters in some 8-bit character sets. */
 113   for (i = 128; i < 160; i++)
 114     newmap[i].function = rl_insert;
 115
 116   /* ISO Latin-1 printing characters should self-insert. */
 117   for (i = 160; i < 256; i++)
 118     newmap[i].function = rl_insert;
 119 #endif /* KEYMAP_SIZE > 128 */
 120
 121   return (newmap);
 122 }
 123
 124 /* Free the storage associated with MAP. */
 125 void
 126 rl_discard_keymap (map)
 127      Keymap map;
 128 {
 129   int i;
 130
 131   if (!map)
 132     return;
 133
 134   for (i = 0; i < KEYMAP_SIZE; i++)
 135     {
 136       switch (map[i].type)
 137         {
 138         case ISFUNC:
 139           break;
 140
 141         case ISKMAP:
 142           rl_discard_keymap ((Keymap)map[i].function);
 143           break;
 144
 145         case ISMACR:
 146           free ((char *)map[i].function);
 147           break;
 148         }
 149     }
 150 }