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ed.h

/* $Header: /src/pub/tcsh/ed.h,v 3.33 2002/07/06 22:28:13 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. 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 */
#define MAXMACROLEVELS  10    /* max number of nested kbd macros */

#ifndef WINNT_NATIVE
# define NT_NUM_KEYS    256
#endif /* WINNT_NATIVE */

/****************************************************************************/
/* 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) __P((int));      /* pointer to function returning CCRETVAL */

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

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 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
#define CC_NORMALIZE_PATH     16
#define CC_LIST_ALL           17
#define CC_COMPLETE_ALL       18
#define CC_COMPLETE_FWD       19
#define CC_COMPLETE_BACK      20
#define CC_NORMALIZE_COMMAND  21

typedef struct {
    Char *buf;
    int   len;
} CStr;

typedef union Xmapval {       /* value passed to the Xkey routines */
    KEYCMD cmd;
    CStr str;
} XmapVal;

#define XK_NOD    -1          /* Internal tree node */
#define XK_CMD     0          /* X-key was an editor command */
#define XK_STR     1          /* X-key was a string macro */
#define XK_EXE     2          /* X-key was a unix command */

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

EXTERN KEYCMD *CurrentKeyMap; /* current command key map */
EXTERN int inputmode;         /* insert, replace, replace1 mode */
EXTERN Char GettingInput;     /* true if getting an input line (mostly) */
EXTERN Char NeedsRedraw;      /* for editor and twenex error messages */
EXTERN Char InputBuf[INBUFSIZE];    /* 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 CStr *KillRing;        /* kill ring */
EXTERN int KillRingMax;       /* max length of kill ring */
EXTERN int KillRingLen;       /* current length of kill ring */
EXTERN int KillPos;           /* points to next kill */
EXTERN int YankPos;           /* points to next yank */

EXTERN Char UndoBuf[INBUFSIZE];
EXTERN Char *UndoPtr;
EXTERN int  UndoSize;
EXTERN int  UndoAction;

EXTERN Char HistBuf[INBUFSIZE];     /* 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[INBUFSIZE];    /* 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 Expand;           /* true if we are expanding a line */
extern Char HistLit;          /* true if history lines are shown literal */
EXTERN Char CurrentHistLit;   /* Literal status of current show history line */

/*
 * These are truly extern
 */
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 Char T_Margin;         
#define MARGIN_AUTO  1        /* term has auto margins */
#define MARGIN_MAGIC 2        /* concept glitch */
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 Strchr() 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))

#define MODE_INSERT     0
#define MODE_REPLACE    1
#define MODE_REPLACE_1  2

#define EX_IO     0     /* while we are executing     */
#define ED_IO     1     /* while we are editing       */
#define TS_IO     2     /* new mode from terminal     */
#define QU_IO     2     /* used only for quoted chars */
#define NN_IO     3     /* The number of entries      */

#if defined(POSIX) || defined(TERMIO)
# define M_INPUT  0
# define M_OUTPUT 1
# define M_CONTROL      2
# define M_LINED  3
# define M_CHAR         4
# define M_NN           5
#else /* GSTTY */
# define M_CONTROL      0
# define M_LOCAL  1
# define M_CHAR         2
# define M_NN           3
#endif /* TERMIO */
typedef struct { 
    char *t_name;
    int  t_setmask;
    int  t_clrmask;
} ttyperm_t[NN_IO][M_NN];

extern ttyperm_t ttylist;
#include "ed.term.h"
#include "ed.decls.h"

#endif /* _h_ed */

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