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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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_ */
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