Real initial commit

1 files changed, 54 insertions, 0 deletions

diff --git a/error.c b/error.c
new file mode 100644
index 0000000..fc3fc50
--- /dev/null
+++ b/error.c
@@ -0,0 +1,54 @@
+/*
+ * error.c -- Implementa la gestión de errores del programa.
+ * Copyright (C) 2018 Juan Marín Noguera
+ *
+ * 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 <errno.h>
+#include <SDL2/SDL.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "error.h"
+
+#define ERR_ON_SDL -1023
+#define ERR_BASE -1024
+
+const char *error_table[] = {
+	"Invalid scancode.",
+	"Null pointer incorrectly passed as a parameter.",
+	"Parameter out of range.",
+	"Invalid input."
+};
+
+void error_exit(ErrorType type)
+{
+	if (type < 0 || sizeof(error_table) / sizeof(char*) <= type)
+		fputs("Unknown error.\n", stderr);
+	else
+		fprintf(stderr, "Error: %s\n", error_table[type]);
+	exit(ERR_BASE-type);
+}
+
+void error_libc_exit()
+{
+	int err = errno; // perror may change the value of errno
+	perror("Error");
+	exit(err);
+}
+
+void error_sdl_exit()
+{
+	fputs(SDL_GetError(), stderr);
+	exit(ERR_ON_SDL);
+}