1 files changed, 102 insertions, 0 deletions
diff --git a/usr.bin/vi/ex/ex_file.c b/usr.bin/vi/ex/ex_file.c
new file mode 100644
index 000000000000..57923db350c1
--- /dev/null
+++ b/usr.bin/vi/ex/ex_file.c
@@ -0,0 +1,102 @@
+/*-
+ * Copyright (c) 1992, 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_file.c	8.8 (Berkeley) 3/8/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <queue.h>
+#include <sys/time.h>
+
+#include <bitstring.h>
+#include <errno.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_file -- :f[ile] [name]
+ *	Status line and change the file's name.
+ */
+int
+ex_file(sp, ep, cmdp)
+	SCR *sp;
+	EXF *ep;
+	EXCMDARG *cmdp;
+{
+	FREF *frp;
+	char *p, *t;
+
+	switch (cmdp->argc) {
+	case 0:
+		break;
+	case 1:
+		frp = sp->frp;
+
+		/* Make sure can allocate enough space. */
+		if ((p = strdup(cmdp->argv[0]->bp)) == NULL) {
+			msgq(sp, M_SYSERR, NULL);
+			return (1);
+		}
+
+		/* If already have a file name, it becomes the alternate. */
+		if ((t = FILENAME(frp)) != NULL)
+			set_alt_name(sp, t);
+
+		/* Free any previously changed name. */
+		if (frp->cname != NULL)
+			free(frp->cname);
+		frp->cname = p;
+
+		/* The read-only bit follows the file name; clear it. */
+		F_CLR(frp, FR_RDONLY);
+
+		/* Have to force a write if the file exists, next time. */
+		F_CLR(frp, FR_CHANGEWRITE);
+		break;
+	default:
+		abort();
+	}
+	status(sp, ep, sp->lno, 1);
+	return (0);
+}