gcc/texinfo/info/infomap.c

/* infomap.c -- Keymaps for Info. */

/* This file is part of GNU Info, a program for reading online documentation
   stored in Info format.

   Copyright (C) 1993 Free Software Foundation, Inc.

   This program 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 2, or (at your option)
   any later version.

   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

   Written by Brian Fox (bfox@ai.mit.edu). */

#include "stdio.h"
#include "ctype.h"
#include "infomap.h"
#include "funs.h"

/* Return a new keymap which has all the uppercase letters mapped to run
   the function info_do_lowercase_version (). */
Keymap
keymap_make_keymap ()
{
  register int i;
  Keymap keymap;

  keymap = (Keymap)xmalloc (256 * sizeof (KEYMAP_ENTRY));

  for (i = 0; i < 256; i++)
    {
      keymap[i].type = ISFUNC;
      keymap[i].function = (VFunction *)NULL;
    }

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

  return (keymap);
}

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

  keymap = keymap_make_keymap ();

  for (i = 0; i < 256; i++)
    {
      keymap[i].type = map[i].type;
      keymap[i].function = map[i].function;
    }
  return (keymap);
}

/* Free the keymap and it's descendents. */
void
keymap_discard_keymap (map)
     Keymap (map);
{
  register int i;

  if (!map)
    return;

  for (i = 0; i < 256; i++)
    {
      switch (map[i].type)
	{
	case ISFUNC:
	  break;

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

	}
    }
}

/* Initialize the standard info keymaps. */

Keymap info_keymap = (Keymap)NULL;
Keymap echo_area_keymap = (Keymap)NULL;

void
initialize_info_keymaps ()
{
  register int i;
  Keymap map;

  if (!info_keymap)
    {
      info_keymap = keymap_make_keymap ();
      info_keymap[ESC].type = ISKMAP;
      info_keymap[ESC].function = (VFunction *)keymap_make_keymap ();
      info_keymap[Control ('x')].type = ISKMAP;
      info_keymap[Control ('x')].function = (VFunction *)keymap_make_keymap ();
      echo_area_keymap = keymap_make_keymap ();
      echo_area_keymap[ESC].type = ISKMAP;
      echo_area_keymap[ESC].function = (VFunction *)keymap_make_keymap ();
      echo_area_keymap[Control ('x')].type = ISKMAP;
      echo_area_keymap[Control ('x')].function =
	(VFunction *)keymap_make_keymap ();
    }

  /* Bind numeric arg functions for both echo area and info window maps. */
  for (i = '0'; i < '9' + 1; i++)
    {
      ((Keymap) info_keymap[ESC].function)[i].function =
	((Keymap) echo_area_keymap[ESC].function)[i].function =
	  info_add_digit_to_numeric_arg;
    }
  ((Keymap) info_keymap[ESC].function)['-'].function =
    ((Keymap) echo_area_keymap[ESC].function)['-'].function =
      info_add_digit_to_numeric_arg;

  /* Bind the echo area routines. */
  map = echo_area_keymap;

  /* Bind the echo area insert routines. */
  for (i = 0; i < 160; i++)
    if (isprint (i))
      map[i].function = ea_insert;

  map[Control ('a')].function = ea_beg_of_line;
  map[Control ('b')].function = ea_backward;
  map[Control ('d')].function = ea_delete;
  map[Control ('e')].function = ea_end_of_line;
  map[Control ('f')].function = ea_forward;
  map[Control ('g')].function = ea_abort;
  map[Control ('h')].function = ea_rubout;
  map[Control ('k')].function = ea_kill_line;
  map[Control ('l')].function = info_redraw_display;
  map[Control ('q')].function = ea_quoted_insert;
  map[Control ('t')].function = ea_transpose_chars;
  map[Control ('u')].function = info_universal_argument;
  map[Control ('y')].function = ea_yank;

  map[LFD].function = ea_newline;
  map[RET].function = ea_newline;
  map[SPC].function = ea_complete;
  map[TAB].function = ea_complete;
  map['?'].function = ea_possible_completions;
  map[DEL].function = ea_rubout;

  /* Bind the echo area ESC keymap. */
  map = (Keymap)echo_area_keymap[ESC].function;

  map[Control ('g')].function = ea_abort;
  map[Control ('v')].function = ea_scroll_completions_window;
  map['b'].function = ea_backward_word;
  map['d'].function = ea_kill_word;
  map['f'].function = ea_forward_word;
#if defined (NAMED_FUNCTIONS)
  /* map['x'].function = info_execute_command; */
#endif /* NAMED_FUNCTIONS */
  map['y'].function = ea_yank_pop;
  map['?'].function = ea_possible_completions;
  map[TAB].function = ea_tab_insert;
  map[DEL].function = ea_backward_kill_word;

  /* Bind the echo area Control-x keymap. */
  map = (Keymap)echo_area_keymap[Control ('x')].function;

  map['o'].function = info_next_window;
  map[DEL].function = ea_backward_kill_line;

  /* Bind commands for Info window keymaps. */
  map = info_keymap;
  map[TAB].function = info_move_to_next_xref;
  map[LFD].function = info_select_reference_this_line;
  map[RET].function = info_select_reference_this_line;
  map[SPC].function = info_scroll_forward;
  map[Control ('a')].function = info_beginning_of_line;
  map[Control ('b')].function = info_backward_char;
  map[Control ('e')].function = info_end_of_line;
  map[Control ('f')].function = info_forward_char;
  map[Control ('g')].function = info_abort_key;
  map[Control ('h')].function = info_get_help_window;
  map[Control ('l')].function = info_redraw_display;
  map[Control ('n')].function = info_next_line;
  map[Control ('p')].function = info_prev_line;
  map[Control ('r')].function = isearch_backward;
  map[Control ('s')].function = isearch_forward;
  map[Control ('u')].function = info_universal_argument;
  map[Control ('v')].function = info_scroll_forward;
  map[','].function = info_next_index_match;

  for (i = '1'; i < '9' + 1; i++)
    map[i].function = info_menu_digit;
  map['0'].function = info_last_menu_item;

  map['<'].function = info_first_node;
  map['>'].function = info_last_node;
  map['?'].function = info_get_help_window;
  map['['].function = info_global_prev_node;
  map[']'].function = info_global_next_node;

  map['b'].function = info_beginning_of_node;
  map['d'].function = info_dir_node;
  map['e'].function = info_end_of_node;
  map['f'].function = info_xref_item;
  map['g'].function = info_goto_node;
  map['h'].function = info_get_info_help_node;
  map['i'].function = info_index_search;
  map['l'].function = info_history_node;
  map['m'].function = info_menu_item;
  map['n'].function = info_next_node;
  map['p'].function = info_prev_node;
  map['q'].function = info_quit;
  map['r'].function = info_xref_item;
  map['s'].function = info_search;
  map['t'].function = info_top_node;
  map['u'].function = info_up_node;
  map[DEL].function = info_scroll_backward;

  /* Bind members in the ESC map for Info windows. */
  map = (Keymap)info_keymap[ESC].function;
  map[Control ('f')].function = info_show_footnotes;
  map[Control ('g')].function = info_abort_key;
  map[TAB].function = info_move_to_prev_xref;
  map[Control ('v')].function = info_scroll_other_window;
  map['<'].function = info_beginning_of_node;
  map['>'].function = info_end_of_node;
  map['b'].function = info_backward_word;
  map['f'].function = info_forward_word;
  map['r'].function = info_move_to_window_line;
  map['v'].function = info_scroll_backward;
#if defined (NAMED_FUNCTIONS)
  map['x'].function = info_execute_command;
#endif /* NAMED_FUNCTIONS */

  /* Bind members in the Control-X map for Info windows. */
  map = (Keymap)info_keymap[Control ('x')].function;

  map[Control ('b')].function = list_visited_nodes;
  map[Control ('c')].function = info_quit;
  map[Control ('f')].function = info_view_file;
  map[Control ('g')].function = info_abort_key;
  map[Control ('v')].function = info_view_file;
  map['0'].function = info_delete_window;
  map['1'].function = info_keep_one_window;
  map['2'].function = info_split_window;
  map['^'].function = info_grow_window;
  map['b'].function = select_visited_node;
  map['k'].function = info_kill_node;
  map['o'].function = info_next_window;
  map['t'].function = info_tile_windows;
  map['w'].function = info_toggle_wrap;
}

/* Strings which represent the sequence of characters that the arrow keys
   produce.  If these keys begin with ESC, and the second character of the
   sequence does not conflict with an existing binding in the Meta keymap,
   then bind the keys to do what C-p, C-n, C-f, and C-b do. */
extern char *term_ku, *term_kd, *term_kr, *term_kl;