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authorDavid Oberhollenzer <david.oberhollenzer@tele2.at>2018-04-12 05:30:12 +0200
committerDavid Oberhollenzer <david.oberhollenzer@tele2.at>2018-04-12 10:28:40 +0200
commit6cf0a254cd9e4892a941bb5ad6f8d9ed317b1617 (patch)
treead9f1b409c5a465986078ee16b102f6fa6cfbdb3 /cmd/service/servicecmd.c
parente148e873e05e4ebe4d7a90cdbe8cdd72618eb7ac (diff)
Build system and directory structure cleanup
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Diffstat (limited to 'cmd/service/servicecmd.c')
-rw-r--r--cmd/service/servicecmd.c90
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);
+}