Integrate the new text interface

A couple pieces of code have been made independant from the GUI
implementation: calc_data and input.

1 files changed, 35 insertions, 0 deletions

diff --git a/src/calc_data.c b/src/calc_data.c
new file mode 100644
index 0000000..ee4e1df
--- /dev/null
+++ b/src/calc_data.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2024  Tristan Riehs
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "calc_data.h"
+
+int
+next_calc(int i)
+{
+	if (i == CALC_COUNT - 1)
+		return 0;
+	else
+		return i+1;
+}
+
+int
+loop_backwards(int i)
+{
+	if (i == 0)
+		return CALC_COUNT-1;
+	else
+		return i-1;
+}