/* $Header: /home/hyperion/mu/christos/src/sys/tcsh-6.00/RCS/ed.h,v 3.0 1991/07/04 21:49:28 christos Exp $ */
/*
 * ed.h: Editor declarations and globals
 */
/*-
 * Copyright (c) 1980, 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
#ifndef _h_ed
#define _h_ed

#ifndef EXTERN
#define EXTERN extern
#endif

#define TABSIZE		8	/* usually 8 spaces/tab */
#ifdef	pdp11			/* jpn: save space */
#define	INBUFSIZ	(BUFSIZ / 2)	/* size of input buffer */
#else
#define	INBUFSIZ	BUFSIZ	/* size of input buffer */
#endif	/* pdp11 */
#define MAXMACROLEVELS	10	/* max number of nested kbd macros */

extern int errno;

/****************************************************************************/
/* stuff for the different states returned by the character editor routines */
/****************************************************************************/

#define CCRETVAL	char	/* size needed for the different char editor */
 /* return values */

#define KEYCMD   unsigned char	/* size needed to index into CcFuncTbl */
 /* Must be unsigned 		       */

typedef CCRETVAL(*PFCmd) ();	/* pointer to function returning CCRETVAL */

struct KeyFuncs {		/* for the "bind" shell command */
    char   *name;		/* function name for bind command */
    int     func;		/* function numeric value */
#ifdef	LONGFUNCS
    char   *description;	/* description of function */
#endif
};

extern PFCmd CcFuncTbl[];	/* table of available commands */
extern KEYCMD CcKeyMap[];	/* keymap table, each index into above tbl */
extern KEYCMD CcAltMap[];	/* Alt keymap table */
extern KEYCMD CcEmacsMap[];	/* keymap table for Emacs default bindings */
extern KEYCMD CcViMap[];	/* keymap table for Vi input mode defaults */
extern KEYCMD CcViCmdMap[];	/* for Vi command mode defaults */
extern struct KeyFuncs FuncNames[];	/* string names vs. CcFuncTbl indices */

EXTERN KEYCMD NumFuns;		/* number of KEYCMDs in above table */

#define	CC_ERROR		100	/* there should NOT be 100 different... */
#define CC_FATAL		101	/* fatal error: inconsistant, must
					 * reset */
#define	CC_NORM			0
#define	CC_NEWLINE		1
#define	CC_EOF			2
#define	CC_COMPLETE		3
#define	CC_LIST_CHOICES		4
#define	CC_LIST_GLOB		5
#define CC_EXPAND_GLOB		6
#define	CC_HELPME		9
#define CC_CORRECT		10
#define CC_WHICH		11
#define CC_ARGHACK		12
#define CC_CORRECT_L		13
#define CC_REFRESH		14
#define CC_EXPAND_VARS		15

/*************************/
/* tty state             */
/*************************/


#ifndef POSIX
#ifdef TERMIO
EXTERN struct termio nio;
EXTERN struct termio xio;
EXTERN struct termio testio;

#if defined(OREO) || defined(hpux) || defined(_IBMR2)
EXTERN struct ltchars nlc;
EXTERN struct ltchars xlc;
EXTERN struct ltchars testlc;

#endif				/* OREO || hpux || _IBMR2 */

#else				/* GSTTY */
EXTERN struct sgttyb nb;	/* original setup tty bits */
EXTERN struct tchars ntc;
EXTERN struct ltchars nlc;
EXTERN int nlb;

EXTERN struct sgttyb xb;	/* running setup tty bits */
EXTERN struct tchars xtc;
EXTERN struct ltchars xlc;
EXTERN int xlb;

EXTERN struct sgttyb testsgb;	/* running setup tty bits */
EXTERN int testnlb;		/* test local mode word */
EXTERN struct tchars testtc;
EXTERN struct ltchars testlc;

#ifdef TIOCGPAGE
EXTERN struct ttypagestat npc;
EXTERN struct ttypagestat xpc;
EXTERN struct ttypagestat testpc;

#endif				/* TIOCGPAGE */

#endif				/* TERMIO */
#else				/* POSIX */
EXTERN struct termios nio;
EXTERN struct termios xio;
EXTERN struct termios testio;

#if defined(hpux)
EXTERN struct ltchars nlc;
EXTERN struct ltchars xlc;
EXTERN struct ltchars testlc;

#endif				/* hpux */
#endif				/* POSIX */



/****************************/
/* Editor state and buffers */
/****************************/

EXTERN KEYCMD *Cur_KeyMap;	/* current command key map */
EXTERN int replacemode;		/* true if in overwrite mode */
EXTERN Char GettingInput;	/* true if getting an input line (mostly) */
EXTERN Char NeedsRedraw;	/* for editor and twenex error messages */
EXTERN Char InputBuf[INBUFSIZ];	/* the real input data */
EXTERN Char *LastChar, *Cursor;	/* point to the next open space */
EXTERN Char *InputLim;		/* limit of size of InputBuf */
EXTERN Char MetaNext;		/* flags for ^V and ^[ functions */
EXTERN Char AltKeyMap;		/* Using alternative command map (for vi mode) */
EXTERN Char VImode;		/* true if running in vi mode (PWP 6-27-88) */
EXTERN Char *Mark;		/* the emacs "mark" (dot is Cursor) */
EXTERN Char DoingArg;		/* true if we have an argument */
EXTERN int Argument;		/* "universal" argument value */
EXTERN KEYCMD LastCmd;		/* previous command executed */
EXTERN Char KillBuf[INBUFSIZ];	/* kill buffer */
EXTERN Char *LastKill;		/* points to end of kill buffer */
EXTERN Char HistBuf[INBUFSIZ];	/* history buffer */
EXTERN Char *LastHist;		/* points to end of history buffer */
EXTERN int Hist_num;		/* what point up the history we are at now. */
EXTERN Char WhichBuf[INBUFSIZ];	/* buffer for which command */
EXTERN Char *LastWhich;		/* points to end of which buffer */
EXTERN Char *CursWhich;		/* points to the cursor point in which buf */
EXTERN int HistWhich;		/* Hist_num is saved in this */
EXTERN Char *SearchPrompt;	/* points to string that holds search prompt */
EXTERN Char DoingSearch;	/* true if we are doing a history search */
EXTERN char Expand;		/* true if we are expanding a line */
EXTERN Char HistLit;		/* true if history lines are shown literal */
EXTERN Char Cur_HistLit;	/* Literal status of current show history line */

/*
 * These are truly extern
 */
extern Char PromptBuf[];
extern short SHIN, SHOUT;
extern int MacroLvl;

EXTERN Char *KeyMacro[MAXMACROLEVELS];

EXTERN Char **Display;		/* display buffer seed vector */
EXTERN int CursorV,		/* real cursor vertical (line) */
        CursorH,		/* real cursor horisontal (column) */
        TermV,			/* number of real screen lines
				 * (sizeof(DisplayBuf) / width */
        TermH;			/* screen width */
EXTERN Char **Vdisplay;		/* new buffer */

/* Variables that describe terminal ability */
EXTERN int T_Lines, T_Cols;	/* Rows and Cols of the terminal */
EXTERN Char T_CanIns;		/* true if I can insert characters */
EXTERN Char T_CanDel;		/* dito for delete characters */
EXTERN Char T_Tabs;		/* true if tty interface is passing tabs */
EXTERN speed_t T_Speed;		/* Tty input Baud rate */
EXTERN Char T_CanCEOL;		/* true if we can clear to end of line */
EXTERN Char T_CanUP;		/* true if this term can do reverse linefeen */
EXTERN Char T_HasMeta;		/* true if we have a meta key */

/* note the extra characters in the index() call in this macro */
#define isword(c)	(Isalpha(c)||Isdigit(c)||Strchr(word_chars,c))
#define min(x,y)	(((x)<(y))?(x):(y))
#define max(x,y)	(((x)>(y))?(x):(y))

#include "ed.decls.h"

#endif				/* _h_ed */
