1 /* vi: set sw=4 ts=4: */
2 /*
3 * Copyright (C) 2009 Denys Vlasenko.
4 *
5 * Licensed under GPLv2, see file LICENSE in this source tree.
6 */
7 #include <unistd.h>
8 #include <stdint.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <stdio.h>
12
13 #include "autoconf.h"
14
15 #define SKIP_applet_main
16 #define ALIGN1 /* nothing, just to placate applet_tables.h */
17 #define ALIGN2 /* nothing, just to placate applet_tables.h */
18 #include "applet_tables.h"
19
20 /* Since we can't use platform.h, have to do this again by hand: */
21 #if ENABLE_NOMMU
22 # define BB_MMU 0
23 # define USE_FOR_NOMMU(...) __VA_ARGS__
24 # define USE_FOR_MMU(...)
25 #else
26 # define BB_MMU 1
27 # define USE_FOR_NOMMU(...)
28 # define USE_FOR_MMU(...) __VA_ARGS__
29 #endif
30
31 #include "usage.h"
32 #define MAKE_USAGE(aname, usage) { aname, usage },
33 static struct usage_data {
34 const char *aname;
35 const char *usage;
36 } usage_array[] = {
37 #include "applets.h"
38 };
39
compare_func(const void * a,const void * b)40 static int compare_func(const void *a, const void *b)
41 {
42 const struct usage_data *ua = a;
43 const struct usage_data *ub = b;
44 return strcmp(ua->aname, ub->aname);
45 }
46
main(void)47 int main(void)
48 {
49 int col, len2;
50
51 int i;
52 int num_messages = sizeof(usage_array) / sizeof(usage_array[0]);
53
54 if (num_messages == 0)
55 return 0;
56
57 qsort(usage_array,
58 num_messages, sizeof(usage_array[0]),
59 compare_func);
60
61 col = 0;
62 for (i = 0; i < num_messages; i++) {
63 len2 = strlen(usage_array[i].aname) + 2;
64 if (col >= 76 - len2) {
65 printf(",\n");
66 col = 0;
67 }
68 if (col == 0) {
69 col = 6;
70 printf("\t");
71 } else {
72 printf(", ");
73 }
74 printf("%s", usage_array[i].aname);
75 col += len2;
76 }
77 printf("\n\n");
78
79 printf("=head1 COMMAND DESCRIPTIONS\n\n");
80 printf("=over 4\n\n");
81
82 for (i = 0; i < num_messages; i++) {
83 if (usage_array[i].aname[0] >= 'a' && usage_array[i].aname[0] <= 'z'
84 && usage_array[i].usage[0] != NOUSAGE_STR[0]
85 ) {
86 printf("=item B<%s>\n\n", usage_array[i].aname);
87 if (usage_array[i].usage[0])
88 printf("%s %s\n\n", usage_array[i].aname, usage_array[i].usage);
89 else
90 printf("%s\n\n", usage_array[i].aname);
91 }
92 }
93 printf("=back\n\n");
94
95 return 0;
96 }
97
98 /* TODO: we used to make options bold with B<> and output an example too:
99
100 =item B<cat>
101
102 cat [B<-u>] [FILE]...
103
104 Concatenate FILE(s) and print them to stdout
105
106 Options:
107 -u Use unbuffered i/o (ignored)
108
109 Example:
110 $ cat /proc/uptime
111 110716.72 17.67
112
113 */
114