GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/vi/build/../vi/v_at.c Lines: 0 24 0.0 %
Date: 2017-11-13 Branches: 0 32 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: v_at.c,v 1.11 2016/05/27 09:18:12 martijn Exp $	*/
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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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#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(SCR *, VICMD *);
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 */
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int
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v_at(SCR *sp, 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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	TAILQ_FOREACH_REVERSE(tp, &cbp->textq, _texth, q)
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		if (((F_ISSET(cbp, CB_LMODE) || TAILQ_NEXT(tp, q)) &&
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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 (len >= sizeof(nbuf))
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			len = sizeof(nbuf) - 1;
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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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}