110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
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/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)v_at.c 10.8 (Berkeley) 4/27/96";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <bitstring.h>
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include "../common/common.h"
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#include "vi.h"
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/*
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* v_at -- @
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* Execute a buffer.
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*
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* PUBLIC: int v_at __P((SCR *, VICMD *));
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*/
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int
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v_at(sp, vp)
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SCR *sp;
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VICMD *vp;
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{
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CB *cbp;
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CHAR_T name;
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TEXT *tp;
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size_t len;
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char nbuf[20];
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/*
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* !!!
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* Historically, [@*]<carriage-return> and [@*][@*] executed the most
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* recently executed buffer in ex mode. In vi mode, only @@ repeated
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* the last buffer. We change historic practice and make @* work from
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* vi mode as well, it's simpler and more consistent.
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*
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* My intent is that *[buffer] will, in the future, pass the buffer to
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* whatever interpreter is loaded.
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*/
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name = F_ISSET(vp, VC_BUFFER) ? vp->buffer : '@';
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if (name == '@' || name == '*') {
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if (!F_ISSET(sp, SC_AT_SET)) {
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ex_emsg(sp, NULL, EXM_NOPREVBUF);
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return (1);
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}
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name = sp->at_lbuf;
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}
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F_SET(sp, SC_AT_SET);
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CBNAME(sp, cbp, name);
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if (cbp == NULL) {
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ex_emsg(sp, KEY_NAME(sp, name), EXM_EMPTYBUF);
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return (1);
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}
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/* Save for reuse. */
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sp->at_lbuf = name;
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/*
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* The buffer is executed in vi mode, while in vi mode, so simply
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* push it onto the terminal queue and continue.
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*
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* !!!
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* Historic practice is that if the buffer was cut in line mode,
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* <newlines> were appended to each line as it was pushed onto
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* the stack. If the buffer was cut in character mode, <newlines>
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* were appended to all lines but the last one.
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*
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* XXX
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* Historic practice is that execution of an @ buffer could be
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* undone by a single 'u' command, i.e. the changes were grouped
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* together. We don't get this right; I'm waiting for the new DB
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* logging code to be available.
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*/
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for (tp = cbp->textq.cqh_last;
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tp != (void *)&cbp->textq; tp = tp->q.cqe_prev)
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if ((F_ISSET(cbp, CB_LMODE) ||
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tp->q.cqe_next != (void *)&cbp->textq) &&
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v_event_push(sp, NULL, "\n", 1, 0) ||
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v_event_push(sp, NULL, tp->lb, tp->len, 0))
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return (1);
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/*
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* !!!
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* If any count was supplied, it applies to the first command in the
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* at buffer.
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*/
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if (F_ISSET(vp, VC_C1SET)) {
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len = snprintf(nbuf, sizeof(nbuf), "%lu", vp->count);
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if (v_event_push(sp, NULL, nbuf, len, 0))
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return (1);
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}
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return (0);
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}
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