/*      $OpenBSD: chared.h,v 1.15 2016/05/22 23:09:56 schwarze Exp $    */
/*      $NetBSD: chared.h,v 1.20 2010/04/15 00:57:33 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.
 *
 *      @(#)chared.h    8.1 (Berkeley) 6/4/93
 */

/*
 * el.chared.h: Character editor interface
 */
#ifndef _h_el_chared
#define _h_el_chared

/*
 * This is an issue of basic "vi" look-and-feel. Defining VI_MOVE works
 * like real vi: i.e. the transition from command<->insert modes moves
 * the cursor.
 *
 * On the other hand we really don't want to move the cursor, because
 * all the editing commands don't include the character under the cursor.
 * Probably the best fix is to make all the editing commands aware of
 * this fact.
 */
#define VI_MOVE

/*
 * Undo information for vi - no undo in emacs (yet)
 */
typedef struct c_undo_t {
        ssize_t  len;                   /* length of saved line */
        int      cursor;                /* position of saved cursor */
        wchar_t *buf;                   /* full saved text */
} c_undo_t;

/* redo for vi */
typedef struct c_redo_t {
        wchar_t *buf;                   /* redo insert key sequence */
        wchar_t *pos;
        wchar_t *lim;
        el_action_t     cmd;            /* command to redo */
        wchar_t ch;                     /* char that invoked it */
        int     count;
        int     action;                 /* from cv_action() */
} c_redo_t;

/*
 * Current action information for vi
 */
typedef struct c_vcmd_t {
        int      action;
        wchar_t *pos;
} c_vcmd_t;

/*
 * Kill buffer for emacs
 */
typedef struct c_kill_t {
        wchar_t *buf;
        wchar_t *last;
        wchar_t *mark;
} c_kill_t;

typedef void (*el_zfunc_t)(EditLine *, void *);

/*
 * Note that we use both data structures because the user can bind
 * commands from both editors!
 */
typedef struct el_chared_t {
        c_undo_t        c_undo;
        c_kill_t        c_kill;
        c_redo_t        c_redo;
        c_vcmd_t        c_vcmd;
        el_zfunc_t      c_resizefun;
        void *          c_resizearg;
} el_chared_t;


#define STRQQ           "\"\""

#define isglob(a)       (strchr("*[]?", (a)) != NULL)

#define NOP             0x00
#define DELETE          0x01
#define INSERT          0x02
#define YANK            0x04

#define CHAR_FWD        (+1)
#define CHAR_BACK       (-1)

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


protected int    cv__isword(wint_t);
protected int    cv__isWord(wint_t);
protected void   cv_delfini(EditLine *);
protected wchar_t *cv__endword(wchar_t *, wchar_t *, int, int (*)(wint_t));
protected int    ce__isword(wint_t);
protected void   cv_undo(EditLine *);
protected void   cv_yank(EditLine *, const wchar_t *, int);
protected wchar_t *cv_next_word(EditLine*, wchar_t *, wchar_t *, int,
                        int (*)(wint_t));
protected wchar_t *cv_prev_word(wchar_t *, wchar_t *, int, int (*)(wint_t));
protected wchar_t *c__next_word(wchar_t *, wchar_t *, int, int (*)(wint_t));
protected wchar_t *c__prev_word(wchar_t *, wchar_t *, int, int (*)(wint_t));
protected void   c_insert(EditLine *, int);
protected void   c_delbefore(EditLine *, int);
protected void   c_delbefore1(EditLine *);
protected void   c_delafter(EditLine *, int);
protected void   c_delafter1(EditLine *);
protected int    c_gets(EditLine *, wchar_t *, const wchar_t *);
protected int    c_hpos(EditLine *);

protected int    ch_init(EditLine *);
protected void   ch_reset(EditLine *);
protected int    ch_resizefun(EditLine *, el_zfunc_t, void *);
protected int    ch_enlargebufs(EditLine *, size_t);
protected void   ch_end(EditLine *);

#endif /* _h_el_chared */