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Revision 1.6, Tue Oct 27 23:59:48 2009 UTC (14 years, 7 months ago) by deraadt
Branch: MAIN
CVS Tags: OPENBSD_5_6_BASE, OPENBSD_5_6, OPENBSD_5_5_BASE, OPENBSD_5_5, OPENBSD_5_4_BASE, OPENBSD_5_4, OPENBSD_5_3_BASE, OPENBSD_5_3, OPENBSD_5_2_BASE, OPENBSD_5_2, OPENBSD_5_1_BASE, OPENBSD_5_1, OPENBSD_5_0_BASE, OPENBSD_5_0, OPENBSD_4_9_BASE, OPENBSD_4_9, OPENBSD_4_8_BASE, OPENBSD_4_8, OPENBSD_4_7_BASE, OPENBSD_4_7
Changes since 1.5: +1 -5 lines 

rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: v_yank.c,v 1.6 2009/10/27 23:59:48 deraadt 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"

/*
 * v_yank -- [buffer][count]y[count][motion]
 *	     [buffer][count]Y
 *	Yank text (or lines of text) into a cut buffer.
 *
 * !!!
 * Historic vi moved the cursor to the from MARK if it was before the current
 * cursor and on a different line, e.g., "yk" moves the cursor but "yj" and
 * "yl" do not.  Unfortunately, it's too late to change this now.  Matching
 * the historic semantics isn't easy.  The line number was always changed and
 * column movement was usually relative.  However, "y'a" moved the cursor to
 * the first non-blank of the line marked by a, while "y`a" moved the cursor
 * to the line and column marked by a.  Hopefully, the motion component code
 * got it right...   Unlike delete, we make no adjustments here.
 *
 * PUBLIC: int v_yank(SCR *, VICMD *);
 */
int
v_yank(sp, vp)
	SCR *sp;
	VICMD *vp;
{
	size_t len;

	if (cut(sp,
	    F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, &vp->m_start,
	    &vp->m_stop, F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0))
		return (1);
	sp->rptlines[L_YANKED] += (vp->m_stop.lno - vp->m_start.lno) + 1;

	/*
	 * One special correction, in case we've deleted the current line or
	 * character.  We check it here instead of checking in every command
	 * that can be a motion component.
	 */
	if (db_get(sp, vp->m_final.lno, DBG_FATAL, NULL, &len))
		return (1);

	/*
	 * !!!
	 * Cursor movements, other than those caused by a line mode command
	 * moving to another line, historically reset the relative position.
	 *
	 * This currently matches the check made in v_delete(), I'm hoping
	 * that they should be consistent...
	 */  
	if (!F_ISSET(vp, VM_LMODE)) {
		F_CLR(vp, VM_RCM_MASK);
		F_SET(vp, VM_RCM_SET);

		/* Make sure the set cursor position exists. */
		if (vp->m_final.cno >= len)
			vp->m_final.cno = len ? len - 1 : 0;
	}
	return (0);
}