- refactored to modular structure

src/ext/xstring.c

@@ -0,0 +1,75 @@
+/*!
+ * @file xstring.c
+ * @brief 
+ * @details
+ *   Project: \n
+ * Subsystem: \n
+ *    Module: \n
+ *      Code: GNU-C\n
+ *      
+ * @date 27.02.2017 
+ * @author SESA354004
+ */
+#include "xstring.h"
+#include "ctype.h"
+
+char* gnu_basename(char *path)
+{
+   char *base = strrchr(path, '/');
+   return base ? base + 1 : path;
+}
+
+/*!
+ * @brief Trim leading and trailing whitespaces
+ * @param [in] *str Input string
+ * @retval char* pointer to the trimmed substring
+ *
+ * @details
+ * This function returns a pointer to a substring of the original string.
+ * If the given string was allocated dynamically, the caller must not overwrite
+ * that pointer with the returned value, since the original pointer must be
+ * deallocated using the same allocator with which it was allocated.  The return
+ * value must NOT be deallocated using free() etc.
+ */
+char* strntrimStatic(char *aStr, size_t aMaxLength)
+{
+   char *end;
+
+   // Trim leading space
+   while (isspace((unsigned char)*aStr) && 0 < aMaxLength)
+   {
+      if (--aMaxLength > 0)
+      {
+         ++aStr;
+      }
+   }
+
+   // All spaces at termination or end of max length
+   if (*aStr == '\0' || 0 == aMaxLength)
+   {
+      return aStr;
+   }
+
+   // Trim trailing space
+   if (strlen(aStr) >= aMaxLength)
+   {
+      end = aStr + aMaxLength - 1;
+   }
+   else
+   {
+      end = aStr + strlen(aStr) - 1;
+   }
+
+   while (end > aStr && isspace((unsigned char)*end))
+   {
+      end--;
+   }
+
+   // Write new null terminator (if length is enough)
+   if (end < (aStr + aMaxLength - 1))
+   {
+      *(end + 1) = '\0';
+   }
+
+   return aStr;
+}