1 files changed, 84 insertions, 0 deletions
diff --git a/src/parameters/parameters.c b/src/parameters/parameters.c
new file mode 100644
index 0000000..82ac9d1
--- /dev/null
+++ b/src/parameters/parameters.c
@@ -0,0 +1,84 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "../core/index.h"
+
+#include "parameters.h"
+
+static int parse_markov_order
+(
+   struct ZoO_parameters param [const restrict static 1],
+   const char argv [const restrict]
+)
+{
+	long long int input;
+	const int old_errno = errno;
+
+	errno = 0;
+
+   input = strtoll(argv, (char **) NULL, 10);
+
+   if
+   (
+      (errno != 0)
+		|| (input > (long long int) ZoO_INDEX_MAX)
+		|| (input < 1)
+   )
+   {
+		fprintf
+      (
+			stderr,
+         "[F] Invalid or value for parameter 'MARKOV_ORDER', accepted"
+			"range is "
+         "[1, %lli] (integer).",
+         (long long int) ZoO_INDEX_MAX
+      );
+
+      errno = old_errno;
+
+      return -1;
+   }
+
+	param->markov_order = (ZoO_index) input;
+
+   errno = old_errno;
+
+   return 0;
+}
+
+enum ZoO_invocation_objective ZoO_parameters_initialize
+(
+   struct ZoO_parameters param [const restrict static 1],
+   int const argc,
+   const char * argv [const static argc]
+)
+{
+   param->session = (const char *) NULL;
+   param->markov_order = 1;
+   param->storage = (const char *) NULL;
+
+   switch (argc)
+   {
+      case 4:
+         param->session = argv[1];
+         param->storage = argv[3];
+
+         if (parse_markov_order(param, argv[2]) < 0)
+         {
+            return ZoO_PRINTS_HELP;
+         }
+         else
+         {
+            return ZoO_RUNS;
+         }
+
+      case 3:
+         param->session = argv[1];
+
+			return ZoO_CLEANS_UP;
+
+      default:
+         return ZoO_PRINTS_HELP;
+   }
+}