Add strspn() and strcspn()

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@243 42af7a65-404d-4744-a932-0658087f49c3

ChangeLog

@@ -136,5 +136,6 @@
 	* Added missing irqrestore() in timer_deletall().
 	* close() was not closing the underlying device.
 	* Added fsync()
+	* Added strspn() and strcspn()
 	* Started m68322
 

Documentation/NuttX.html

@@ -515,6 +515,7 @@ Other memory:
 	* Added missing irqrestore() in timer_deletall().
 	* close() was not closing the underlying device.
 	* Added fsync()
+	* Added strspn() and strcspn()
 	* Started m68322
 </pre></ul>
 

TODO

@@ -35,14 +35,13 @@ o Network
 o USB
 
 o Libraries
-- sscanf() needs strtod and strcspn
+- sscanf() and lib_vsprintf() do not support floating point values.
 
 o File system
-- Add disk usage stats, stat(), sync(), unlink(), mkdir(), chmod(), rename(),
+- Add disk usage stats, stat(), unlink(), mkdir(), chmod(), rename(),
 etc.
 - FAT32:  long file names
 
-
 o Console Output
 
 o Documentation

lib/Makefile

@@ -44,6 +44,7 @@ MISC_SRCS	= lib_init.c lib_streamsem.c lib_filesem.c
 STRING_SRCS	= lib_memset.c lib_memcpy.c lib_memcmp.c lib_memmove.c \
 		  lib_strcpy.c lib_strncpy.c lib_strcmp.c \
 		  lib_strlen.c lib_strdup.c lib_strtol.c lib_strchr.c \
+		  lib_strspn.c lib_strcspn.c \
 		  lib_strtok.c lib_strtokr.c lib_strerror.c
 CTYPE_SRCS	= 
 STDIO_SRCS	= lib_fopen.c lib_fclose.c \

lib/lib_sscanf.c

@@ -260,6 +260,13 @@ int vsscanf(char *buf, const char *s, va_list ap)
 
           else if (*s == 'f')
             {
+#if 1
+# warning "No floating point conversions"
+              void *pv = va_arg(ap, void*);
+
+              vdbg("vsscanf: Return 0.0 to %p\n", pv);
+              *((double_t*)pv) = 0.0;
+#else
               vdbg("vsscanf: Performing floating point conversion\n");
 
               /* Skip over any white space before the real string */
@@ -301,7 +308,7 @@ int vsscanf(char *buf, const char *s, va_list ap)
 #endif
                   void *pv = va_arg(ap, void*);
 
-                  vdbg("vsscanf: Return %f to 0x%p\n", dvalue, pv);
+                  vdbg("vsscanf: Return %f to %p\n", dvalue, pv);
 
                   /* But we have to check whether we need to return a
                    * float or a double.
@@ -318,6 +325,7 @@ int vsscanf(char *buf, const char *s, va_list ap)
                       *((float*)pv) = (float)dvalue;
                     }
                 }
+#endif
             }
 
           if (!noassign)

lib/lib_strcspn.c

@@ -0,0 +1,67 @@
+/****************************************************************************
+ * lib_strcspn.c
+ *
+ *   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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Compilation Switches
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+#include <string.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: strcspn
+ *
+ * Description:
+ *  strspn() calculates the length of the initial segment of s which
+ *  consists entirely of characters not in reject
+ *
+ ****************************************************************************/
+
+size_t strspn(const char *s, const char *reject)
+{
+  size_t i;
+  for (i = 0; s[i] && strchr(reject, s[i]) == NULL; i++);
+  return i;
+}
+

lib/lib_strspn.c

@@ -0,0 +1,66 @@
+/****************************************************************************
+ * lib_strspn.c
+ *
+ *   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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Compilation Switches
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+#include <string.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: strspn
+ *
+ * Description:
+ *  strspn() calculates the length of the initial segment of s which
+ *  consists entirely of characters in accept.
+ *
+ ****************************************************************************/
+
+size_t strspn(const char *s, const char *accept)
+{
+  size_t i;
+  for (i = 0; s[i] && strchr(accept, s[i]) != NULL; i++);
+  return i;
+}