4 files changed, 148 insertions, 0 deletions
diff --git a/src/parameters/CMakeLists.txt b/src/parameters/CMakeLists.txt
new file mode 100644
index 0000000..94e6337
--- /dev/null
+++ b/src/parameters/CMakeLists.txt
@@ -0,0 +1,6 @@
+set(
+   SRC_FILES ${SRC_FILES}
+   ${CMAKE_CURRENT_SOURCE_DIR}/parameters.c
+)
+set(SRC_FILES ${SRC_FILES} PARENT_SCOPE)
+
diff --git a/src/parameters/parameters.c b/src/parameters/parameters.c
new file mode 100644
index 0000000..24cbd68
--- /dev/null
+++ b/src/parameters/parameters.c
@@ -0,0 +1,100 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "../core/index.h"
+
+#include "../error/error.h"
+
+#include "parameters.h"
+
+static int parse_markov_order
+(
+   struct JH_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) JH_INDEX_MAX)
+      || (input < 1)
+   )
+   {
+      JH_FATAL
+      (
+         stderr,
+         "Invalid or value for parameter 'MARKOV_ORDER', accepted "
+         "range is "
+         "[2, %lli] (integer).",
+         (long long int) JH_INDEX_MAX
+      );
+
+      errno = old_errno;
+
+      return -1;
+   }
+
+   param->markov_order = (JH_index) input;
+
+   errno = old_errno;
+
+   return 0;
+}
+
+enum JH_invocation_objective JH_parameters_initialize
+(
+   struct JH_parameters param [const restrict static 1],
+   int const argc,
+   const char * argv [const static argc]
+)
+{
+   param->session = (const char *) NULL;
+   param->markov_order = 2;
+
+   switch (argc)
+   {
+      case 3:
+         param->session = argv[1];
+
+         if (parse_markov_order(param, argv[2]) < 0)
+         {
+            return JH_PRINTS_HELP;
+         }
+         else
+         {
+            return JH_RUNS;
+         }
+
+      case 2:
+         param->session = argv[1];
+
+         return JH_CLEANS_UP;
+
+      default:
+         return JH_PRINTS_HELP;
+   }
+}
+
+const char * JH_parameters_get_session_name
+(
+   const struct JH_parameters param [const restrict static 1]
+)
+{
+   return param->session;
+}
+
+JH_index JH_parameters_get_markov_order
+(
+   const struct JH_parameters param [const restrict static 1]
+)
+{
+   return param->markov_order;
+}
diff --git a/src/parameters/parameters.h b/src/parameters/parameters.h
new file mode 100644
index 0000000..1cb9fd8
--- /dev/null
+++ b/src/parameters/parameters.h
@@ -0,0 +1,23 @@
+#ifndef _JH_CLI_PARAMETERS_H_
+#define _JH_CLI_PARAMETERS_H_
+
+#include "parameters_types.h"
+
+const char * JH_parameters_get_session_name
+(
+   const struct JH_parameters param [const restrict static 1]
+);
+
+JH_index JH_parameters_get_markov_order
+(
+   const struct JH_parameters param [const restrict static 1]
+);
+
+enum JH_invocation_objective JH_parameters_initialize
+(
+   struct JH_parameters param [const restrict static 1],
+   int const argc,
+   const char * argv [const static argc]
+);
+
+#endif
diff --git a/src/parameters/parameters_types.h b/src/parameters/parameters_types.h
new file mode 100644
index 0000000..7b2059b
--- /dev/null
+++ b/src/parameters/parameters_types.h
@@ -0,0 +1,19 @@
+#ifndef _JH_CLI_PARAMETERS_TYPES_H_
+#define _JH_CLI_PARAMETERS_TYPES_H_
+
+#include "../core/index_types.h"
+
+enum JH_invocation_objective
+{
+   JH_PRINTS_HELP,
+   JH_CLEANS_UP,
+   JH_RUNS
+};
+
+struct JH_parameters
+{
+   const char * restrict session;
+   JH_index markov_order;
+};
+
+#endif