documentation, error fixes, organization

1 files changed, 41 insertions, 0 deletions

diff --git a/error.c b/error.c
new file mode 100644
index 0000000..5719313
--- /dev/null
+++ b/error.c
@@ -0,0 +1,41 @@
+/**
+ * @file error.c
+ * Provides a simple error-logging mechanism.
+ *
+ * Copyright (C) 2018 Clyne Sullivan
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "error.h"
+
+static int lastError = ENONE;
+
+static const char *errorTable[] = {
+	"no error",
+	"undefined value",
+	"bad parameter"
+};
+
+int seterror(int error)
+{
+	if (error < EMAX)
+		lastError = error;
+	return -lastError;
+}
+
+const char *geterror(void)
+{
+	return errorTable[lastError];
+}