Contents of /tags/mkinitrd-6_3_3/busybox/applets/usage_pod.c
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Wed Dec 15 21:43:57 2010 UTC (13 years, 9 months ago) by niro
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File size: 2329 byte(s)
Wed Dec 15 21:43:57 2010 UTC (13 years, 9 months ago) by niro
File MIME type: text/plain
File size: 2329 byte(s)
tagged 'mkinitrd-6_3_3'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Copyright (C) 2009 Denys Vlasenko. |
4 | * |
5 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
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 | |
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 | |
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(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 | return 0; |
94 | } |
95 | |
96 | /* TODO: we used to make options bold with B<> and output an example too: |
97 | |
98 | =item B<cat> |
99 | |
100 | cat [B<-u>] [FILE]... |
101 | |
102 | Concatenate FILE(s) and print them to stdout |
103 | |
104 | Options: |
105 | -u Use unbuffered i/o (ignored) |
106 | |
107 | Example: |
108 | $ cat /proc/uptime |
109 | 110716.72 17.67 |
110 | |
111 | */ |