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[thirdparty/xfsprogs-dev.git] / db / help.c
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2bd0ea18 1/*
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2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
dfc130f3 4 *
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5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
2bd0ea18 7 * published by the Free Software Foundation.
dfc130f3 8 *
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9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
dfc130f3 13 *
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14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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17 */
18
6b803e5a 19#include "libxfs.h"
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20#include "command.h"
21#include "help.h"
22#include "output.h"
23
24static void help_all(void);
25static void help_onecmd(const char *cmd, const cmdinfo_t *ct);
26static int help_f(int argc, char **argv);
27static void help_oneline(const char *cmd, const cmdinfo_t *ct);
28
29static const cmdinfo_t help_cmd =
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30 { "help", "?", help_f, 0, 1, 0, N_("[command]"),
31 N_("help for one or all commands"), NULL };
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32
33static void
34help_all(void)
35{
36 const cmdinfo_t *ct;
37
38 for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++)
39 help_oneline(ct->name, ct);
9ee7055c 40 dbprintf(_("\nUse 'help commandname' for extended help.\n"));
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41}
42
43static int
44help_f(
45 int argc,
46 char **argv)
47{
48 const cmdinfo_t *ct;
49
50 if (argc == 1) {
51 help_all();
52 return 0;
53 }
54 ct = find_command(argv[1]);
55 if (ct == NULL) {
9ee7055c 56 dbprintf(_("command %s not found\n"), argv[1]);
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57 return 0;
58 }
59 help_onecmd(argv[1], ct);
60 return 0;
61}
62
63void
64help_init(void)
65{
66 add_command(&help_cmd);
67}
68
69static void
70help_onecmd(
71 const char *cmd,
72 const cmdinfo_t *ct)
73{
74 help_oneline(cmd, ct);
75 if (ct->help)
76 ct->help();
77}
78
79static void
80help_oneline(
81 const char *cmd,
82 const cmdinfo_t *ct)
83{
84 if (cmd)
85 dbprintf("%s ", cmd);
86 else {
87 dbprintf("%s ", ct->name);
88 if (ct->altname)
9ee7055c 89 dbprintf(_("(or %s) "), ct->altname);
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90 }
91 if (ct->args)
92 dbprintf("%s ", ct->args);
93 dbprintf("-- %s\n", ct->oneline);
94}