summaryrefslogtreecommitdiffstats
path: root/lib/readline/keymaps.c
blob: 4ade30bcd0365771de5cfa92a3b45839fed989d1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
/* keymaps.c -- Functions and keymaps for the GNU Readline library. */

/* Copyright (C) 1988,1989-2009,2017 Free Software Foundation, Inc.

   This file is part of the GNU Readline Library (Readline), a library
   for reading lines of text with interactive input and history editing.      

   Readline is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   Readline is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with Readline.  If not, see <http://www.gnu.org/licenses/>.
*/

#define READLINE_LIBRARY

#if defined (HAVE_CONFIG_H)
#  include <config.h>
#endif

#if defined (HAVE_STDLIB_H)
#  include <stdlib.h>
#else
#  include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */

#include <stdio.h>	/* for FILE * definition for readline.h */

#include "readline.h"
#include "rlconf.h"

#include "emacs_keymap.c"

#if defined (VI_MODE)
#include "vi_keymap.c"
#endif

#include "xmalloc.h"

/* **************************************************************** */
/*								    */
/*		      Functions for manipulating Keymaps.	    */
/*								    */
/* **************************************************************** */


/* Return a new, empty keymap.
   Free it with free() when you are done. */
Keymap
rl_make_bare_keymap (void)
{
  register int i;
  Keymap keymap;

  keymap = (Keymap)xmalloc (KEYMAP_SIZE * sizeof (KEYMAP_ENTRY));
  for (i = 0; i < KEYMAP_SIZE; i++)
    {
      keymap[i].type = ISFUNC;
      keymap[i].function = (rl_command_func_t *)NULL;
    }

#if 0
  for (i = 'A'; i < ('Z' + 1); i++)
    {
      keymap[i].type = ISFUNC;
      keymap[i].function = rl_do_lowercase_version;
    }
#endif

  return (keymap);
}

/* A convenience function that returns 1 if there are no keys bound to
   functions in KEYMAP */
int
rl_empty_keymap (Keymap keymap)
{
  int i;

  for (i = 0; i < ANYOTHERKEY; i++)
    {
      if (keymap[i].type != ISFUNC || keymap[i].function)
	return 0;
    }
  return 1;
}

/* Return a new keymap which is a copy of MAP.  Just copies pointers, does
   not copy text of macros or descend into child keymaps. */
Keymap
rl_copy_keymap (Keymap map)
{
  register int i;
  Keymap temp;

  temp = rl_make_bare_keymap ();
  for (i = 0; i < KEYMAP_SIZE; i++)
    {
      temp[i].type = map[i].type;
      temp[i].function = map[i].function;
    }
  return (temp);
}

/* Return a new keymap with the printing characters bound to rl_insert,
   the uppercase Meta characters bound to run their lowercase equivalents,
   and the Meta digits bound to produce numeric arguments. */
Keymap
rl_make_keymap (void)
{
  register int i;
  Keymap newmap;

  newmap = rl_make_bare_keymap ();

  /* All ASCII printing characters are self-inserting. */
  for (i = ' '; i < 127; i++)
    newmap[i].function = rl_insert;

  newmap[TAB].function = rl_insert;
  newmap[RUBOUT].function = rl_rubout;	/* RUBOUT == 127 */
  newmap[CTRL('H')].function = rl_rubout;

#if KEYMAP_SIZE > 128
  /* Printing characters in ISO Latin-1 and some 8-bit character sets. */
  for (i = 128; i < 256; i++)
    newmap[i].function = rl_insert;
#endif /* KEYMAP_SIZE > 128 */

  return (newmap);
}

/* Free the storage associated with MAP. */
void
rl_discard_keymap (Keymap map)
{
  int i;

  if (map == 0)
    return;

  for (i = 0; i < KEYMAP_SIZE; i++)
    {
      switch (map[i].type)
	{
	case ISFUNC:
	  break;

	case ISKMAP:
	  rl_discard_keymap ((Keymap)map[i].function);
	  xfree ((char *)map[i].function);
	  break;

	case ISMACR:
	  xfree ((char *)map[i].function);
	  break;
	}
    }
}

/* Convenience function that discards, then frees, MAP. */
void
rl_free_keymap (Keymap map)
{
  rl_discard_keymap (map);
  xfree ((char *)map);
}