Implement `true` and `false`

1 files changed, 44 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..64da70f
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,44 @@
+#include <libgen.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef int util_main(int, char **);
+
+extern util_main true_main;
+extern util_main false_main;
+
+typedef struct futiles_util futiles_util_t;
+struct futiles_util {
+	const char *name;
+	util_main *main;
+};
+
+int display_utils(int, char **);
+const futiles_util_t utils[] = {
+	{ .name = "futiles", .main = display_utils },
+	{ .name = "true", .main = true_main },
+	{ .name = "false", .main = false_main }
+};
+#define UTILS_NB (sizeof(utils) / sizeof(futiles_util_t))
+
+int display_utils([[maybe_unused]] int argc, [[maybe_unused]] char *argv[]) {
+	fputs("Available utils: ", stdout);
+	for (size_t i = 1; i < UTILS_NB; i++) {
+		printf("%s ", utils[i].name);
+	}
+	putc('\n', stdout);
+
+	return EXIT_SUCCESS;
+}
+
+int main(int argc, char *argv[]) {
+	char *called_basename = basename(argv[0]);
+
+	for (size_t i = 0; i < UTILS_NB; i++) {
+		if (strcmp(called_basename, utils[i].name) == 0) {
+			return utils[i].main(argc, argv);
+		}
+	}
+	return EXIT_FAILURE;
+}