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/* 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);
}
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