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- /* infomap.h -- Description of a keymap in Info and related functions. */
-
- /* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- Written by Brian Fox (bfox@ai.mit.edu). */
-
- #if !defined (_INFOMAP_H_)
- #define _INFOMAP_H_
-
- #include "general.h"
-
- #define ESC '\033'
- #define DEL '\177'
- #define TAB '\011'
- #define RET '\r'
- #define LFD '\n'
- #define SPC ' '
-
- #define meta_character_threshold (DEL + 1)
- #define control_character_threshold (SPC)
-
- #define meta_character_bit 0x80
- #define control_character_bit 0x40
-
- #define Meta_p(c) (((c) > meta_character_threshold))
- #define Control_p(c) ((c) < control_character_threshold)
-
- #define Meta(c) ((c) | (meta_character_bit))
- #define UnMeta(c) ((c) & (~meta_character_bit))
- #define Control(c) ((toupper (c)) & (~control_character_bit))
- #define UnControl(c) (tolower ((c) | control_character_bit))
-
- /* A keymap contains one entry for each key in the ASCII set.
- Each entry consists of a type and a pointer.
- FUNCTION is the address of a function to run, or the
- address of a keymap to indirect through.
- TYPE says which kind of thing FUNCTION is. */
- typedef struct {
- char type;
- VFunction *function;
- } KEYMAP_ENTRY;
-
- typedef KEYMAP_ENTRY *Keymap;
-
- /* The values that TYPE can have in a keymap entry. */
- #define ISFUNC 0
- #define ISKMAP 1
-
- extern Keymap info_keymap;
- extern Keymap echo_area_keymap;
-
- /* Return a new keymap which has all the uppercase letters mapped to run
- the function info_do_lowercase_version (). */
- extern Keymap keymap_make_keymap ();
-
- /* Return a new keymap which is a copy of MAP. */
- extern Keymap keymap_copy_keymap ();
-
- /* Free MAP and it's descendents. */
- extern void keymap_discard_keymap ();
-
- /* Initialize the info keymaps. */
- extern void initialize_info_keymaps ();
-
- #endif /* !_INFOMAP_H_ */
-