GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/vi/build/../ex/ex_visual.c Lines: 0 43 0.0 %
Date: 2017-11-13 Branches: 0 28 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: ex_visual.c,v 1.10 2016/01/06 22:28:52 millert 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 <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "../common/common.h"
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#include "../vi/vi.h"
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/*
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 * ex_visual -- :[line] vi[sual] [^-.+] [window_size] [flags]
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 *	Switch to visual mode.
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 *
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 * PUBLIC: int ex_visual(SCR *, EXCMD *);
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 */
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int
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ex_visual(SCR *sp, EXCMD *cmdp)
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{
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	SCR *tsp;
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	size_t len;
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	int pos;
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	char buf[256];
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	/* If open option off, disallow visual command. */
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	if (!O_ISSET(sp, O_OPEN)) {
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		msgq(sp, M_ERR,
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	    "The visual command requires that the open option be set");
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		return (1);
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	}
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	/* Move to the address. */
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	sp->lno = cmdp->addr1.lno == 0 ? 1 : cmdp->addr1.lno;
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	/*
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	 * Push a command based on the line position flags.  If no
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	 * flag specified, the line goes at the top of the screen.
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	 */
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	switch (FL_ISSET(cmdp->iflags,
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	    E_C_CARAT | E_C_DASH | E_C_DOT | E_C_PLUS)) {
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	case E_C_CARAT:
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		pos = '^';
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		break;
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	case E_C_DASH:
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		pos = '-';
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		break;
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	case E_C_DOT:
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		pos = '.';
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		break;
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	case E_C_PLUS:
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		pos = '+';
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		break;
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	default:
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		sp->frp->lno = sp->lno;
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		sp->frp->cno = 0;
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		(void)nonblank(sp, sp->lno, &sp->cno);
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		F_SET(sp->frp, FR_CURSORSET);
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		goto nopush;
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	}
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	if (FL_ISSET(cmdp->iflags, E_C_COUNT))
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		len = snprintf(buf, sizeof(buf),
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		     "%luz%c%lu", (ulong)sp->lno, pos, cmdp->count);
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	else
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		len = snprintf(buf, sizeof(buf), "%luz%c", (ulong)sp->lno, pos);
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	if (len >= sizeof(buf))
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		len = sizeof(buf) - 1;
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	(void)v_event_push(sp, NULL, buf, len, CH_NOMAP | CH_QUOTED);
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	/*
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	 * !!!
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	 * Historically, if no line address was specified, the [p#l] flags
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	 * caused the cursor to be moved to the last line of the file, which
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	 * was then positioned as described above.  This seems useless, so
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	 * I haven't implemented it.
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	 */
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	switch (FL_ISSET(cmdp->iflags, E_C_HASH | E_C_LIST | E_C_PRINT)) {
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	case E_C_HASH:
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		O_SET(sp, O_NUMBER);
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		break;
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	case E_C_LIST:
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		O_SET(sp, O_LIST);
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		break;
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	case E_C_PRINT:
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		break;
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	}
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nopush:	/*
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	 * !!!
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	 * You can call the visual part of the editor from within an ex
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	 * global command.
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	 *
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	 * XXX
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	 * Historically, undoing a visual session was a single undo command,
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	 * i.e. you could undo all of the changes you made in visual mode.
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	 * We don't get this right; I'm waiting for the new logging code to
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	 * be available.
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	 *
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	 * It's explicit, don't have to wait for the user, unless there's
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	 * already a reason to wait.
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	 */
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	if (!F_ISSET(sp, SC_SCR_EXWROTE))
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		F_SET(sp, SC_EX_WAIT_NO);
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	if (F_ISSET(sp, SC_EX_GLOBAL)) {
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		/*
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		 * When the vi screen(s) exit, we don't want to lose our hold
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		 * on this screen or this file, otherwise we're going to fail
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		 * fairly spectacularly.
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		 */
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		++sp->refcnt;
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		++sp->ep->refcnt;
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		/*
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		 * Fake up a screen pointer -- vi doesn't get to change our
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		 * underlying file, regardless.
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		 */
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		tsp = sp;
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		if (vi(&tsp))
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			return (1);
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		/*
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		 * !!!
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		 * Historically, if the user exited the vi screen(s) using an
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		 * ex quit command (e.g. :wq, :q) ex/vi exited, it was only if
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		 * they exited vi using the Q command that ex continued.  Some
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		 * early versions of nvi continued in ex regardless, but users
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		 * didn't like the semantic.
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		 *
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		 * Reset the screen.
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		 */
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		if (ex_init(sp))
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			return (1);
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		/* Move out of the vi screen. */
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		(void)ex_puts(sp, "\n");
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	} else {
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		F_CLR(sp, SC_EX | SC_SCR_EX);
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		F_SET(sp, SC_VI);
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	}
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	return (0);
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}