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[unix-history] / gnu / usr.bin / kgdb / readline / keymaps.c

/* keymaps.c -- Functions and keymaps for the GNU Readline library. */

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

  This file is part of GNU 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 1, 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; see the file COPYING.  If not, write to the Free
  Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */

#include "keymaps.h"
#include "emacs_keymap.c"

#ifdef VI_MODE
#include "vi_keymap.c"
#endif

/* Remove these declarations when we have a complete libgnu.a. */
#define STATIC_MALLOC
#ifndef STATIC_MALLOC
extern char *xmalloc (), *xrealloc ();
#else
static char *xmalloc (), *xrealloc ();
#endif

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


/* Return a new, empty keymap.
  Free it with free() when you are done. */
Keymap
rl_make_bare_keymap ()
{
 register int i;
 Keymap keymap = (Keymap)xmalloc (128 * sizeof (KEYMAP_ENTRY));

 for (i = 0; i < 128; i++)
   {
     keymap[i].type = ISFUNC;
     keymap[i].function = (Function *)NULL;
   }

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

 return (keymap);
}

/* Return a new keymap which is a copy of MAP. */
Keymap
rl_copy_keymap (map)
    Keymap map;
{
 register int i;
 Keymap temp = rl_make_bare_keymap ();

 for (i = 0; i < 128; 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 ()
{
 extern rl_insert (), rl_rubout (), rl_do_lowercase_version ();
 extern rl_digit_argument ();
 register int i;
 Keymap newmap;

 newmap = rl_make_bare_keymap ();

 /* All printing characters are self-inserting. */
 for (i = ' '; i < 126; i++)
   newmap[i].function = rl_insert;

 newmap[TAB].function = rl_insert;
 newmap[RUBOUT].function = rl_rubout;

 return (newmap);
}

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

 if (!map)
   return;

 for (i = 0; i < 128; i++)
   {
     switch (map[i].type)
       {
       case ISFUNC:
         break;

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

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

#ifdef STATIC_MALLOC
\f
/* **************************************************************** */
/*                                                                  */
/*                      xmalloc and xrealloc ()                     */
/*                                                                  */
/* **************************************************************** */

static char *
xmalloc (bytes)
    int bytes;
{
 static memory_error_and_abort ();
 char *temp = (char *)malloc (bytes);

 if (!temp)
   memory_error_and_abort ();
 return (temp);
}

static char *
xrealloc (pointer, bytes)
    char *pointer;
    int bytes;
{
 static memory_error_and_abort ();
 char *temp = (char *)realloc (pointer, bytes);

 if (!temp)
   memory_error_and_abort ();
 return (temp);
}

static
memory_error_and_abort ()
{
 fprintf (stderr, "readline: Out of virtual memory!\n");
 abort ();
}
#endif /* STATIC_MALLOC */