1 files changed, 84 insertions, 0 deletions
diff --git a/src/sleep.c b/src/sleep.c
new file mode 100644
index 000000000..7212ba54f
--- /dev/null
+++ b/src/sleep.c
@@ -0,0 +1,84 @@
+/* sleep - delay for a specified amount of time.
+   Copyright (C) 1984, 1991 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include "system.h"
+
+long argdecode ();
+void error ();
+
+/* The name by which this program was run. */
+char *program_name;
+
+void
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  int i;
+  unsigned seconds = 0;
+
+  program_name = argv[0];
+
+  if (argc == 1)
+    {
+      fprintf (stderr, "Usage: %s number[smhd]...\n", argv[0]);
+      exit (1);
+    }
+
+  for (i = 1; i < argc; i++)
+    seconds += argdecode (argv[i]);
+
+  sleep (seconds);
+
+  exit (0);
+}
+
+long
+argdecode (s)
+     char *s;
+{
+  long value;
+  register char *p = s;
+  register char c;
+
+  value = 0;
+  while ((c = *p++) >= '0' && c <= '9')
+    value = value * 10 + c - '0';
+
+  switch (c)
+    {
+    case 's':
+      break;
+    case 'm':
+      value *= 60;
+      break;
+    case 'h':
+      value *= 60 * 60;
+      break;
+    case 'd':
+      value *= 60 * 60 * 24;
+      break;
+    default:
+      p--;
+    }
+
+  if (*p)
+    error (1, 0, "invalid time interval `%s'", s);
+  return value;
+}