Refactored command parsing.

Allows for automatically tested command parsing by splitting parsing
and invokation of the commands.

src/util/memory.h

@@ -35,9 +35,11 @@ extern char* debug_mem_strndup(const char* s, size_t n);
 
 #define hub_malloc     malloc
 #define hub_free       free
+#define hub_realloc    realloc
 #define hub_strdup     strdup
 #define hub_strndup    strndup
 
+
 #endif
 
 extern void* hub_malloc_zero(size_t size);

src/util/misc.c

@@ -281,6 +281,27 @@ int uhub_atoi(const char* value) {
 	return value[0] == '-' ? -val : val;
 }
 
+int is_number(const char* value, int* num)
+{
+	int len = strlen(value);
+	int offset = (value[0] == '-') ? 1 : 0;
+	int val = 0;
+	int i = offset;
+
+	if (!*(value + offset))
+		return 0;
+
+	for (; i < len; i++)
+		if (value[i] > '9' || value[i] < '0')
+			return 0;
+
+	for (i = offset; i< len; i++)
+		val = val*10 + (value[i] - '0');
+	*num = value[0] == '-' ? -val : val;
+
+	return 1;
+}
+
 
 /*
  * FIXME: -INTMIN is wrong!

src/util/misc.h

@@ -36,6 +36,12 @@ extern char* strip_white_space(char* string);
 extern void strip_off_ini_line_comments(char* line, int line_count);
 extern char* strip_off_quotes(char* line);
 
+/**
+ * Convert number in str to integer and store it in num.
+ * @return 1 on success, or 0 on error.
+ */
+extern int is_number(const char* str, int* num);
+
 extern int file_read_lines(const char* file, void* data, file_line_handler_t handler);
 
 /**