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 2, 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, 59 Temple Place, Suite 330, Boston, MA 02111 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 <stdio.h>      /* for FILE * definition for readline.h */
  34
  35 #include "readline.h"
  36 #include "rlconf.h"
  37
  38 #include "emacs_keymap.c"
  39
  40 #if defined (VI_MODE)
  41 #include "vi_keymap.c"
  42 #endif
  43
  44 #include "xmalloc.h"
  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 = (rl_command_func_t *)NULL;
  65     }
  66
  67 #if 0
  68   for (i = 'A'; i < ('Z' + 1); i++)
  69     {
  70       keymap[i].type = ISFUNC;
  71       keymap[i].function = rl_do_lowercase_version;
  72     }
  73 #endif
  74
  75   return (keymap);
  76 }
  77
  78 /* Return a new keymap which is a copy of MAP. */
  79 Keymap
  80 rl_copy_keymap (map)
  81      Keymap map;
  82 {
  83   register int i;
  84   Keymap temp;
  85
  86   temp = rl_make_bare_keymap ();
  87   for (i = 0; i < KEYMAP_SIZE; i++)
  88     {
  89       temp[i].type = map[i].type;
  90       temp[i].function = map[i].function;
  91     }
  92   return (temp);
  93 }
  94
  95 /* Return a new keymap with the printing characters bound to rl_insert,
  96    the uppercase Meta characters bound to run their lowercase equivalents,
  97    and the Meta digits bound to produce numeric arguments. */
  98 Keymap
  99 rl_make_keymap ()
 100 {
 101   register int i;
 102   Keymap newmap;
 103
 104   newmap = rl_make_bare_keymap ();
 105
 106   /* All ASCII printing characters are self-inserting. */
 107   for (i = ' '; i < 127; i++)
 108     newmap[i].function = rl_insert;
 109
 110   newmap[TAB].function = rl_insert;
 111   newmap[RUBOUT].function = rl_rubout;  /* RUBOUT == 127 */
 112   newmap[CTRL('H')].function = rl_rubout;
 113
 114 #if KEYMAP_SIZE > 128
 115   /* Printing characters in ISO Latin-1 and some 8-bit character sets. */
 116   for (i = 128; i < 256; i++)
 117     newmap[i].function = rl_insert;
 118 #endif /* KEYMAP_SIZE > 128 */
 119
 120   return (newmap);
 121 }
 122
 123 /* Free the storage associated with MAP. */
 124 void
 125 rl_discard_keymap (map)
 126      Keymap map;
 127 {
 128   int i;
 129
 130   if (!map)
 131     return;
 132
 133   for (i = 0; i < KEYMAP_SIZE; i++)
 134     {
 135       switch (map[i].type)
 136         {
 137         case ISFUNC:
 138           break;
 139
 140         case ISKMAP:
 141           rl_discard_keymap ((Keymap)map[i].function);
 142           break;
 143
 144         case ISMACR:
 145           free ((char *)map[i].function);
 146           break;
 147         }
 148     }
 149 }