1 files changed, 38 insertions, 24 deletions

diff --git a/src/main.c b/src/main.c
index c78b558..6afa907 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,6 +6,19 @@
 
 #define DATABASE_PATH "ftag.db"
 
+static void ftag_init(int, char **);
+static void ftag_help(int, char **);
+
+struct ftag_command {
+	const char *name;
+	void (*func)(int argc, char **argv);
+};
+
+static const struct ftag_command toplevel_commands[] = {
+	{.name = "init", .func = ftag_init},
+	{.name = "help", .func = ftag_help}
+};
+static const int toplevel_command_count = sizeof(toplevel_commands) / sizeof(struct ftag_command);
 static sqlite3 *db;
 
 static void __sqlite3_check(int rc, sqlite3 *db, const char *file, int line)
@@ -19,41 +32,42 @@ static void __sqlite3_check(int rc, sqlite3 *db, const char *file, int line)
 
 #define sqlite3_check(RC, DB) __sqlite3_check(RC, DB, __FILE__, __LINE__)
 
-static void ftag_init(void)
+static void ftag_init(int, char **)
 {
-	sqlite3_exec("")
+	;
 }
 
-static void usage(void)
+static void ftag_help(int, char **)
 {
-	printf("usage: ftag COMMAND [COMMAND-ARG]...\n");
+	printf("Usage: ftag COMMAND [COMMAND-ARG]...\n");
 	printf("Available values for COMMAND:\n");
-	printf("  init\n");
+	printf("  init    initialize the database\n");
+	printf("  help    print this message\n");
 }
 
-int main(int argc, char *argv[])
+static void parse_args(int argc,
+		       char **argv,
+		       const struct ftag_command *commands,
+		       int command_count)
 {
-	char *err_msg;
-	int rc;
+	assert(argc > 0);
+	assert(command_count > 0);
+	for (int i = 0; i < command_count; i++) {
+		if (strcmp(argv[0], commands[i].name) == 0) {
+			commands[i].func(argc-1, argv+1);
+			return;
+		}
+	}
+}
 
+int main(int argc, char *argv[])
+{
 	if (argc == 1) {
-		usage();
-		exit(1);
+		ftag_help(0, NULL);
+		exit(EXIT_FAILURE);
 	}
 
-	rc = sqlite3_open(DATABASE_PATH, &db);
-	sqlite3_check(rc, db);
+	parse_args(argc-1, argv+1, toplevel_commands, toplevel_command_count);
 
-	if (strcmp(argv[1], "init") == 0)
-		ftag_init();
-	else
-		assert(0);
-
-	sqlite3_free(err_msg);
-	sqlite3_close(db);
-	return 0;
+	return EXIT_SUCCESS;
 }
-
-/* Local Variables: */
-/* compile-command: "gcc -std=c99 -Wall -O0 -g3 $(pkg-config --libs sqlite3) -o sqlite-first main.c" */
-/* End: */