Partial revert: put back the file fmt.c.

It's no longer used by ps(1), but w(1) reaches around to it.
Cluestick applied by deraadt@.

1 files changed, 82 insertions, 0 deletions

diff --git a/bin/ps/fmt.c b/bin/ps/fmt.c
new file mode 100644
index 00000000000..919109ad1a9
--- /dev/null
+++ b/bin/ps/fmt.c
@@ -0,0 +1,82 @@
+/*	$OpenBSD: fmt.c,v 1.15 2016/01/10 21:08:01 schwarze Exp $	*/
+
+/*-
+ * Copyright (c) 1990, 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. 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.
+ */
+
+#include <sys/types.h>
+#include <sys/resource.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <vis.h>
+#include "ps.h"
+
+void
+fmt_puts(const char *s, int *leftp)
+{
+	static char *v = NULL;
+	static size_t maxlen = 0;
+	size_t len;
+
+	if (*leftp == 0)
+		return;
+	len = strlen(s) * 4 + 1;
+	if (len > maxlen) {
+		free(v);
+		maxlen = 0;
+		if (len < getpagesize())
+			len = getpagesize();
+		v = malloc(len);
+		if (v == NULL)
+			return;
+		maxlen = len;
+	}
+	strvis(v, s, VIS_TAB | VIS_NL | VIS_CSTYLE);
+	if (*leftp != -1) {
+		len = strlen(v);
+		if (len > *leftp) {
+			v[*leftp] = '\0';
+			*leftp = 0;
+		} else
+			*leftp -= len;
+	}
+	printf("%s", v);
+}
+
+void
+fmt_putc(int c, int *leftp)
+{
+
+	if (*leftp == 0)
+		return;
+	if (*leftp != -1)
+		*leftp -= 1;
+	putchar(c);
+}