2 * Copyright (C) 2015 - Philippe Proulx <pproulx@efficios.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 #include "../command.h"
26 #include <common/utils.h>
28 static const char *help_msg
=
29 #ifdef LTTNG_EMBED_HELP
30 #include <lttng-help.1.h>
36 static const char *lttng_help_msg
=
37 #ifdef LTTNG_EMBED_HELP
49 static struct poptOption long_options
[] = {
50 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
51 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
52 {"list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, NULL
, NULL
},
59 int cmd_help(int argc
, const char **argv
, const struct cmd_struct commands
[])
61 int opt
, ret
= CMD_SUCCESS
;
63 static poptContext pc
;
64 const struct cmd_struct
*cmd
;
66 const char *cmd_argv
[2];
68 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
69 poptReadDefaultConfig(pc
, 0);
71 while ((opt
= poptGetNextOpt(pc
)) != -1) {
76 case OPT_LIST_OPTIONS
:
77 list_cmd_options(stdout
, long_options
);
85 /* Get command name */
86 cmd_name
= (char *) poptGetArg(pc
);
88 if (cmd_name
== NULL
) {
89 /* Fall back to lttng(1) */
90 ret
= utils_show_help(1, "lttng", lttng_help_msg
);
92 ERR("Cannot show --help for `lttng`");
100 /* Help about help? */
101 if (strcmp(cmd_name
, "help") == 0) {
106 /* Make sure command name exists */
109 while (cmd
->name
!= NULL
) {
110 if (strcmp(cmd
->name
, cmd_name
) == 0) {
119 ERR("Unknown command \"%s\"", cmd_name
);
124 /* Show command's help */
125 cmd_argv
[0] = cmd
->name
;
126 cmd_argv
[1] = "--help";
128 ret
= cmd
->func(2, cmd_argv
);
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