[BACK]Return to ex_screen.c CVS log [TXT][DIR] Up to [local] / src / usr.bin / vi / ex
File: [local] / src / usr.bin / vi / ex / ex_screen.c (download)

Revision 1.7, Tue Oct 27 23:59:47 2009 UTC (14 years, 7 months ago) by deraadt
Branch: MAIN
CVS Tags: 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 1.6: +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: ex_screen.c,v 1.7 2009/10/27 23:59:47 deraadt Exp $	*/

/*-
 * Copyright (c) 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 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 <stdlib.h>
#include <string.h>

#include "../common/common.h"
#include "../vi/vi.h"

/*
 * ex_bg --	:bg
 *	Hide the screen.
 *
 * PUBLIC: int ex_bg(SCR *, EXCMD *);
 */
int
ex_bg(sp, cmdp)
	SCR *sp;
	EXCMD *cmdp;
{
	return (vs_bg(sp));
}

/*
 * ex_fg --	:fg [file]
 *	Show the screen.
 *
 * PUBLIC: int ex_fg(SCR *, EXCMD *);
 */
int
ex_fg(sp, cmdp)
	SCR *sp;
	EXCMD *cmdp;
{
	SCR *nsp;
	int newscreen;

	newscreen = F_ISSET(cmdp, E_NEWSCREEN);
	if (vs_fg(sp, &nsp, cmdp->argc ? cmdp->argv[0]->bp : NULL, newscreen))
		return (1);

	/* Set up the switch. */
	if (newscreen) {
		sp->nextdisp = nsp;
		F_SET(sp, SC_SSWITCH);
	}
	return (0);
}

/*
 * ex_resize --	:resize [+-]rows
 *	Change the screen size.
 *
 * PUBLIC: int ex_resize(SCR *, EXCMD *);
 */
int
ex_resize(sp, cmdp)
	SCR *sp;
	EXCMD *cmdp;
{
	adj_t adj;

	switch (FL_ISSET(cmdp->iflags,
	    E_C_COUNT | E_C_COUNT_NEG | E_C_COUNT_POS)) {
	case E_C_COUNT:
		adj = A_SET;
		break;
	case E_C_COUNT | E_C_COUNT_NEG:
		adj = A_DECREASE;
		break;
	case E_C_COUNT | E_C_COUNT_POS:
		adj = A_INCREASE;
		break;
	default:
		ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
		return (1);
	}
	return (vs_resize(sp, cmdp->count, adj));
}

/*
 * ex_sdisplay --
 *	Display the list of screens.
 *
 * PUBLIC: int ex_sdisplay(SCR *);
 */
int
ex_sdisplay(sp)
	SCR *sp;
{
	GS *gp;
	SCR *tsp;
	int cnt, col, len, sep;

	gp = sp->gp;
	if ((tsp = CIRCLEQ_FIRST(&gp->hq)) == CIRCLEQ_END(&gp->hq)) {
		msgq(sp, M_INFO, "149|No background screens to display");
		return (0);
	}

	col = len = sep = 0;
	for (cnt = 1; tsp != (void *)&gp->hq && !INTERRUPTED(sp);
	    tsp = CIRCLEQ_NEXT(tsp, q)) {
		col += len = strlen(tsp->frp->name) + sep;
		if (col >= sp->cols - 1) {
			col = len;
			sep = 0;
			(void)ex_puts(sp, "\n");
		} else if (cnt != 1) {
			sep = 1;
			(void)ex_puts(sp, " ");
		}
		(void)ex_puts(sp, tsp->frp->name);
		++cnt;
	}
	if (!INTERRUPTED(sp))
		(void)ex_puts(sp, "\n");
	return (0);
}