Build system and directory structure cleanup

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>

1 files changed, 90 insertions, 0 deletions

diff --git a/cmd/service/servicecmd.c b/cmd/service/servicecmd.c
new file mode 100644
index 0000000..84e6a32
--- /dev/null
+++ b/cmd/service/servicecmd.c
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * Copyright (C) 2018 - David Oberhollenzer
+ *
+ * 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 <stdlib.h>
+#include <stdio.h>
+
+#include "servicecmd.h"
+#include "service.h"
+#include "config.h"
+#include "util.h"
+
+
+command_t *commands;
+
+extern char *__progname;
+
+
+void usage(int status)
+{
+	FILE *stream = (status == EXIT_SUCCESS ? stdout : stderr);
+	int padd = 0, len;
+	command_t *cmd;
+
+	fprintf(stream, "usage: %s <command> [args...]\n\n"
+			"Available commands:\n\n", __progname);
+
+	for (cmd = commands; cmd != NULL; cmd = cmd->next) {
+		len = strlen(cmd->cmd);
+
+		padd = len > padd ? len : padd;
+	}
+
+	for (cmd = commands; cmd != NULL; cmd = cmd->next) {
+		fprintf(stream, "%*s - %s\n",
+			(int)padd + 1, cmd->cmd, cmd->s_desc);
+	}
+
+	fprintf(stream, "\nTry `%s help <command>' for more information "
+			"on a specific command\n", __progname);
+
+	exit(status);
+}
+
+void tell_read_help(const char *cmd)
+{
+	fprintf(stderr, "Try `%s help %s' for more information.\n",
+		__progname, cmd);
+}
+
+int check_arguments(const char *cmd, int argc, int minc, int maxc)
+{
+	if (argc >= minc && argc <= maxc)
+		return 0;
+
+	fprintf(stderr, "Too %s arguments for `%s'\n",
+			argc > maxc ? "many" : "few", cmd);
+	tell_read_help(cmd);
+	return -1;
+}
+
+int main(int argc, char **argv)
+{
+	command_t *cmd;
+
+	if (argc < 2)
+		usage(EXIT_SUCCESS);
+
+	for (cmd = commands; cmd != NULL; cmd = cmd->next) {
+		if (!strcmp(cmd->cmd, argv[1])) {
+			return cmd->run_cmd(argc - 1, argv + 1);
+		}
+	}
+
+	fprintf(stderr, "Unknown command '%s'\n\n", argv[1]);
+	usage(EXIT_FAILURE);
+}