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-rw-r--r--usr.bin/vi/ex/ex_screen.c154
1 files changed, 154 insertions, 0 deletions
diff --git a/usr.bin/vi/ex/ex_screen.c b/usr.bin/vi/ex/ex_screen.c
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index 000000000000..de0f946621af
--- /dev/null
+++ b/usr.bin/vi/ex/ex_screen.c
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+/*-
+ * Copyright (c) 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)ex_screen.c 8.12 (Berkeley) 3/8/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <queue.h>
+#include <sys/time.h>
+
+#include <bitstring.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+
+#include <db.h>
+#include <regex.h>
+
+#include "vi.h"
+#include "excmd.h"
+
+/*
+ * ex_split -- :s[plit] [file ...]
+ * Split the screen, optionally setting the file list.
+ */
+int
+ex_split(sp, ep, cmdp)
+ SCR *sp;
+ EXF *ep;
+ EXCMDARG *cmdp;
+{
+ return (sp->s_split(sp, cmdp->argc ? cmdp->argv : NULL));
+}
+
+/*
+ * ex_bg -- :bg
+ * Hide the screen.
+ */
+int
+ex_bg(sp, ep, cmdp)
+ SCR *sp;
+ EXF *ep;
+ EXCMDARG *cmdp;
+{
+ return (sp->s_bg(sp));
+}
+
+/*
+ * ex_fg -- :fg [file]
+ * Show the screen.
+ */
+int
+ex_fg(sp, ep, cmdp)
+ SCR *sp;
+ EXF *ep;
+ EXCMDARG *cmdp;
+{
+ return (sp->s_fg(sp, cmdp->argc ? cmdp->argv[0]->bp : NULL));
+}
+
+/*
+ * ex_resize -- :resize [+-]rows
+ * Change the screen size.
+ */
+int
+ex_resize(sp, ep, cmdp)
+ SCR *sp;
+ EXF *ep;
+ EXCMDARG *cmdp;
+{
+ enum adjust adj;
+
+ if (!F_ISSET(cmdp, E_COUNT)) {
+ msgq(sp, M_ERR, "Usage: %s", cmdp->cmd->usage);
+ return (1);
+ }
+ if (F_ISSET(cmdp, E_COUNT_NEG))
+ adj = A_DECREASE;
+ else if (F_ISSET(cmdp, E_COUNT_POS))
+ adj = A_INCREASE;
+ else
+ adj = A_SET;
+ return (sp->s_rabs(sp, cmdp->count, adj));
+}
+
+/*
+ * ex_sdisplay --
+ * Display the list of screens.
+ */
+int
+ex_sdisplay(sp, ep)
+ SCR *sp;
+ EXF *ep;
+{
+ SCR *tsp;
+ int cnt, col, len, sep;
+
+ if ((tsp = sp->gp->hq.cqh_first) == (void *)&sp->gp->hq) {
+ (void)ex_printf(EXCOOKIE,
+ "No backgrounded screens to display.\n");
+ return (0);
+ }
+
+ col = len = sep = 0;
+ for (cnt = 1; tsp != (void *)&sp->gp->hq; tsp = tsp->q.cqe_next) {
+ col += len = strlen(FILENAME(tsp->frp)) + sep;
+ if (col >= sp->cols - 1) {
+ col = len;
+ sep = 0;
+ (void)ex_printf(EXCOOKIE, "\n");
+ } else if (cnt != 1) {
+ sep = 1;
+ (void)ex_printf(EXCOOKIE, " ");
+ }
+ (void)ex_printf(EXCOOKIE, "%s", FILENAME(tsp->frp));
+ ++cnt;
+ }
+ (void)ex_printf(EXCOOKIE, "\n");
+ return (0);
+}