NuttX RTOS

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@3 7fd9a85b-ad96-42d3-883c-3090e2eb8679

1 files changed, 187 insertions, 0 deletions

diff --git a/nuttx/include/ctype.h b/nuttx/include/ctype.h
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+/************************************************************
+ * ctype.h
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 Gregory Nutt 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.
+ *
+ ************************************************************/
+
+#ifndef __CTYPE_H
+#define __CTYPE_H
+
+/* There is no consistent ctype implementation, just a
+ * smattering of functions.  Individually, they are okay, but
+ * a more standard, data lookup approach would make more sense
+ * if used extensively.
+ */
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+#include <sys/types.h>
+
+/************************************************************
+ * Public Type Definitions
+ ************************************************************/
+
+/************************************************************
+ * Function:  isspace
+ *
+ * Description:
+ * Checks  for  white-space characters.  In the "C" and "POSIX"
+ * locales, these are: space, form-feed ('\f'), newline ('\n'),
+ * carriage return ('\r'), horizontal tab ('\t'), and vertical
+ * tab ('\v').
+ *
+ ************************************************************/
+
+static inline int isspace(int c)
+{
+  if (c == ' '  || c == '\t' || c == '\n' || \
+      c == '\r' || c == '\f' || c == '\v')
+    {
+      return TRUE;
+    }
+  else
+    {
+      return FALSE;
+    }
+}
+
+/************************************************************
+ * Function:  isdigit
+ *
+ * Description:
+ *    ANSI standard isdigit implementation.
+ *
+ ************************************************************/
+
+static inline int isdigit(int c)
+{
+  return (c >= '0' && c <= '9');
+}
+
+/************************************************************
+ * Function:  isascii
+ *
+ * Description:
+ *  Checks whether c is a 7-bit unsigned char value that
+ *  fits into the ASCII character set.
+ *
+ ************************************************************/
+
+static inline int isascii(int c)
+{
+  return (c >= 0 && c <= 0177);
+}
+
+
+/************************************************************
+ * Function:  isascii
+ *
+ * Description:
+ *   isxdigit() checks for a hexadecimal digits, i.e. one of
+ *   {0-9,a-f,A-F}
+ *
+ ************************************************************/
+
+static inline int isxdigit(int c)
+{
+  if ((c >= '0' && c <= '9') ||
+      (c >= 'a' && c <= 'f') ||
+      (c >= 'A' && c <= 'F'))
+    {
+      return 1;
+    }
+  else
+    {
+
+      return 0;
+    }
+}
+
+/************************************************************
+ * Function:  isascii
+ *
+ * Description:
+ *   toupper() converts the letter c to upper case, if possible.
+ *
+ ************************************************************/
+
+static inline int toupper(int c)
+{
+  if (c >= 'a' && c <= 'z')
+    {
+      return c - 'a' + 'A';
+    }
+  else
+    {
+      return c;
+    }
+}
+
+/************************************************************
+ * Function:  isascii
+ *
+ * Description:
+ *   tolower() converts the letter c to lower case, if possible.
+ *
+ ************************************************************/
+
+static inline int tolower(int c)
+{
+  if (c >= 'A' && c <= 'Z')
+    {
+      return c - 'A' + 'a';
+    }
+  else
+    {
+      return c;
+    }
+}
+
+/************************************************************
+ * Public Functions
+ ************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CTYPE_H */