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Diffstat (limited to 'contrib/nvi/vi/v_yank.c')
-rw-r--r-- | contrib/nvi/vi/v_yank.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/contrib/nvi/vi/v_yank.c b/contrib/nvi/vi/v_yank.c new file mode 100644 index 0000000..4708f19 --- /dev/null +++ b/contrib/nvi/vi/v_yank.c @@ -0,0 +1,82 @@ +/*- + * 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" + +#ifndef lint +static const char sccsid[] = "@(#)v_yank.c 10.9 (Berkeley) 5/19/96"; +#endif /* not lint */ + +#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 __P((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); +} |