Fix max filename size report by FAT statfs with long file names; Add missing logic to support fieldwidth and justification for %s format; Add extended help options. Default help command just shows a short list of commands. Verbose and single command help options

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@5008 7fd9a85b-ad96-42d3-883c-3090e2eb8679

1 files changed, 88 insertions, 0 deletions

diff --git a/nuttx/sched/clock_dow.c b/nuttx/sched/clock_dow.c
new file mode 100644
index 000000000..93bcfc2d9
--- /dev/null
+++ b/nuttx/sched/clock_dow.c
@@ -0,0 +1,88 @@
+/****************************************************************************
+ * sched/clock_dow.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 NuttX 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+
+#include <nuttx/clock.h>
+
+#include "clock_internal.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* 23 * (month + 1) / 9, month = 0..11 */
+
+static const uint8_t g_lookup[12] = {2, 5, 7, 10, 12, 15, 17, 20, 23, 25, 28, 30};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: clock_dow
+ *
+ * Description:
+ *   Calculate the day of week (DOW) from they year month and day.  Based on
+ *   an algorithm pubished in 1990 by Michael Keith and Tom Craver with some
+ *   tweaks to handle months in the range 0-11.
+ *
+ * Parameters:
+ *   year  - year (e.g., 1988)
+ *   month - 0 through 11
+ *   day   - 1 through 31
+ *
+ * Return Value:
+ *   The day of the week as days since Sunday: 0 = Sunday, 1 = Monday, etc.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+int clock_dow(int year, int month, int day)
+{
+  day += month < 2 ? year-- : year - 2;
+  return ((int)g_lookup[month] + day + 4 + year/4 - year/100 + year/400) % 7;
+}