/*      $OpenBSD: v_put.c,v 1.9 2025/08/23 21:02:10 millert Exp $       */

/*-
 * Copyright (c) 1992, 1993, 1994
 *      The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1992, 1993, 1994, 1995, 1996
 *      Keith Bostic.  All rights reserved.
 *
 * See the LICENSE file for redistribution information.
 */

#include "config.h"

#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>

#include <bitstring.h>
#include <limits.h>
#include <stdio.h>

#include "../common/common.h"
#include "vi.h"

static void     inc_buf(SCR *, VICMD *);

/*
 * v_Put -- [buffer]P
 *      Insert the contents of the buffer before the cursor.
 *
 * PUBLIC: int v_Put(SCR *, VICMD *);
 */
int
v_Put(SCR *sp, VICMD *vp)
{
        u_long cnt;

        if (F_ISSET(vp, VC_ISDOT))
                inc_buf(sp, vp);

        /*
         * !!!
         * Historic vi did not support a count with the 'p' and 'P'
         * commands.  It's useful, so we do.
         */
        cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
        if (put(sp, NULL, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
            &vp->m_start, &vp->m_final, 0, cnt))
                return (1);

        return (0);
}

/*
 * v_put -- [buffer]p
 *      Insert the contents of the buffer after the cursor.
 *
 * PUBLIC: int v_put(SCR *, VICMD *);
 */
int
v_put(SCR *sp, VICMD *vp)
{
        u_long cnt;

        if (F_ISSET(vp, VC_ISDOT))
                inc_buf(sp, vp);

        /*
         * !!!
         * Historic vi did not support a count with the 'p' and 'P'
         * commands.  It's useful, so we do.
         */
        cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
        if (put(sp, NULL, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
            &vp->m_start, &vp->m_final, 1, cnt))
                return (1);

        return (0);
}

/*
 * !!!
 * Historical whackadoo.  The dot command `puts' the numbered buffer
 * after the last one put.  For example, `"4p.' would put buffer #4
 * and buffer #5.  If the user continued to enter '.', the #9 buffer
 * would be repeatedly output.  This was not documented, and is a bit
 * tricky to reconstruct.  Historical versions of vi also dropped the
 * contents of the default buffer after each put, so after `"4p' the
 * default buffer would be empty.  This makes no sense to me, so we
 * don't bother.  Don't assume sequential order of numeric characters.
 *
 * And, if that weren't exciting enough, failed commands don't normally
 * set the dot command.  Well, boys and girls, an exception is that
 * the buffer increment gets done regardless of the success of the put.
 */
static void
inc_buf(SCR *sp, VICMD *vp)
{
        CHAR_T v;

        switch (vp->buffer) {
        case '1':
                v = '2';
                break;
        case '2':
                v = '3';
                break;
        case '3':
                v = '4';
                break;
        case '4':
                v = '5';
                break;
        case '5':
                v = '6';
                break;
        case '6':
                v = '7';
                break;
        case '7':
                v = '8';
                break;
        case '8':
                v = '9';
                break;
        default:
                return;
        }
        VIP(sp)->sdot.buffer = vp->buffer = v;
}