/*      $OpenBSD: el.h,v 1.22 2016/05/25 09:23:49 schwarze Exp $        */
/*      $NetBSD: el.h,v 1.37 2016/04/18 17:01:19 christos Exp $ */

/*-
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * 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.
 *
 *      @(#)el.h        8.1 (Berkeley) 6/4/93
 */

/*
 * el.h: Internal structures.
 */
#ifndef _h_el
#define _h_el
/*
 * Local defaults
 */
#define KSHVI
#define VIDEFAULT
#define ANCHOR

#include "histedit.h"
#include "chartype.h"

#define EL_BUFSIZ       1024            /* Maximum line size            */

#define HANDLE_SIGNALS  0x01
#define NO_TTY          0x02
#define EDIT_DISABLED   0x04
#define UNBUFFERED      0x08
#define CHARSET_IS_UTF8 0x10
#define NARROW_HISTORY  0x40

typedef unsigned char el_action_t;      /* Index to command array       */

typedef struct coord_t {                /* Position on the screen       */
        int     h;
        int     v;
} coord_t;

typedef struct el_line_t {
        wchar_t         *buffer;        /* Input line                   */
        wchar_t         *cursor;        /* Cursor position              */
        wchar_t         *lastchar;      /* Last character               */
        const wchar_t   *limit;         /* Max position                 */
} el_line_t;

/*
 * Editor state
 */
typedef struct el_state_t {
        int             inputmode;      /* What mode are we in?         */
        int             doingarg;       /* Are we getting an argument?  */
        int             argument;       /* Numeric argument             */
        int             metanext;       /* Is the next char a meta char */
        el_action_t     lastcmd;        /* Previous command             */
        el_action_t     thiscmd;        /* this command                 */
        wchar_t         thisch;         /* char that generated it       */
} el_state_t;

#include "tty.h"
#include "prompt.h"
#include "keymacro.h"
#include "terminal.h"
#include "refresh.h"
#include "chared.h"
#include "search.h"
#include "hist.h"
#include "map.h"
#include "sig.h"

struct el_read_t;

struct editline {
        wchar_t          *el_prog;      /* the program name             */
        FILE             *el_infile;    /* Stdio stuff                  */
        FILE             *el_outfile;   /* Stdio stuff                  */
        FILE             *el_errfile;   /* Stdio stuff                  */
        int               el_infd;      /* Input file descriptor        */
        int               el_outfd;     /* Output file descriptor       */
        int               el_errfd;     /* Error file descriptor        */
        int               el_flags;     /* Various flags.               */
        coord_t           el_cursor;    /* Cursor location              */
        wchar_t         **el_display;   /* Real screen image = what is there */
        wchar_t         **el_vdisplay;  /* Virtual screen image = what we see */
        void             *el_data;      /* Client data                  */
        el_line_t         el_line;      /* The current line information */
        el_state_t        el_state;     /* Current editor state         */
        el_terminal_t     el_terminal;  /* Terminal dependent stuff     */
        el_tty_t          el_tty;       /* Tty dependent stuff          */
        el_refresh_t      el_refresh;   /* Refresh stuff                */
        el_prompt_t       el_prompt;    /* Prompt stuff                 */
        el_prompt_t       el_rprompt;   /* Prompt stuff                 */
        el_chared_t       el_chared;    /* Characted editor stuff       */
        el_map_t          el_map;       /* Key mapping stuff            */
        el_keymacro_t     el_keymacro;  /* Key binding stuff            */
        el_history_t      el_history;   /* History stuff                */
        el_search_t       el_search;    /* Search stuff                 */
        el_signal_t       el_signal;    /* Signal handling stuff        */
        struct el_read_t *el_read;      /* Character reading stuff      */
        ct_buffer_t       el_scratch;   /* Scratch conversion buffer    */
        ct_buffer_t       el_lgcyconv;  /* Buffer for legacy wrappers   */
        LineInfo          el_lgcylinfo; /* Legacy LineInfo buffer       */
};

protected int   el_editmode(EditLine *, int, const wchar_t **);

#ifdef DEBUG
#define EL_ABORT(a)     do { \
                                fprintf(el->el_errfile, "%s, %d: ", \
                                         __FILE__, __LINE__); \
                                fprintf a; \
                                abort(); \
                        } while( /*CONSTCOND*/0);
#else
#define EL_ABORT(a)     abort()
#endif
#endif /* _h_el */