busybox/applets/usage_pod.c

/* vi: set sw=4 ts=4: */
/*
 * Copyright (C) 2009 Denys Vlasenko.
 *
 * Licensed under GPLv2, see file LICENSE in this tarball for details.
 */
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>

/* Just #include "autoconf.h" doesn't work for builds in separate
 * object directory */
#include "autoconf.h"

#define SKIP_applet_main
#define ALIGN1 /* nothing, just to placate applet_tables.h */
#define ALIGN2 /* nothing, just to placate applet_tables.h */
#include "applet_tables.h"

/* Since we can't use platform.h, have to do this again by hand: */
#if ENABLE_NOMMU
# define BB_MMU 0
# define USE_FOR_NOMMU(...) __VA_ARGS__
# define USE_FOR_MMU(...)
#else
# define BB_MMU 1
# define USE_FOR_NOMMU(...)
# define USE_FOR_MMU(...) __VA_ARGS__
#endif

static const char usage_messages[] = ""
#define MAKE_USAGE
#include "usage.h"
#include "applets.h"
;

int main(void)
{
	const char *names;
	const char *usage;
	int col, len2;

	col = 0;
	names = applet_names;
	while (*names) {
		len2 = strlen(names) + 2;
		if (col >= 76 - len2) {
			printf(",\n");
			col = 0;
		}
		if (col == 0) {
			col = 6;
			printf("\t");
		} else {
			printf(", ");
		}
		printf(names);
		col += len2;
		names += len2 - 1;
	}
	printf("\n\n");

	printf("=head1 COMMAND DESCRIPTIONS\n\n");
	printf("=over 4\n\n");

	names = applet_names;
	usage = usage_messages;
	while (*names) {
		if (*names >= 'a' && *names <= 'z'
		 && *usage != NOUSAGE_STR[0]
		) {
			printf("=item B<%s>\n\n", names);
			if (*usage)
				printf("%s %s\n\n", names, usage);
			else
				printf("%s\n\n", names);
		}
		names += strlen(names) + 1;
		usage += strlen(usage) + 1;
	}
	return 0;
}

/* TODO: we used to make options bold with B<> and output an example too:

=item B<cat>

cat [B<-u>] [FILE]...

Concatenate FILE(s) and print them to stdout

Options:
        -u      Use unbuffered i/o (ignored)

Example:
        $ cat /proc/uptime
        110716.72 17.67

*/
1	niro	984	/* 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 <string.h>
10			#include <stdio.h>
11
12			/* Just #include "autoconf.h" doesn't work for builds in separate
13			* object directory */
14			#include "autoconf.h"
15
16			#define SKIP_applet_main
17			#define ALIGN1 /* nothing, just to placate applet_tables.h */
18			#define ALIGN2 /* nothing, just to placate applet_tables.h */
19			#include "applet_tables.h"
20
21			/* Since we can't use platform.h, have to do this again by hand: */
22			#if ENABLE_NOMMU
23			# define BB_MMU 0
24			# define USE_FOR_NOMMU(...) __VA_ARGS__
25			# define USE_FOR_MMU(...)
26			#else
27			# define BB_MMU 1
28			# define USE_FOR_NOMMU(...)
29			# define USE_FOR_MMU(...) __VA_ARGS__
30			#endif
31
32			static const char usage_messages[] = ""
33			#define MAKE_USAGE
34			#include "usage.h"
35			#include "applets.h"
36			;
37
38			int main(void)
39			{
40			const char *names;
41			const char *usage;
42			int col, len2;
43
44			col = 0;
45			names = applet_names;
46			while (*names) {
47			len2 = strlen(names) + 2;
48			if (col >= 76 - len2) {
49			printf(",\n");
50			col = 0;
51			}
52			if (col == 0) {
53			col = 6;
54			printf("\t");
55			} else {
56			printf(", ");
57			}
58			printf(names);
59			col += len2;
60			names += len2 - 1;
61			}
62			printf("\n\n");
63
64			printf("=head1 COMMAND DESCRIPTIONS\n\n");
65			printf("=over 4\n\n");
66
67			names = applet_names;
68			usage = usage_messages;
69			while (*names) {
70			if (names >= 'a' && names <= 'z'
71			&& *usage != NOUSAGE_STR[0]
72			) {
73			printf("=item B<%s>\n\n", names);
74			if (*usage)
75			printf("%s %s\n\n", names, usage);
76			else
77			printf("%s\n\n", names);
78			}
79			names += strlen(names) + 1;
80			usage += strlen(usage) + 1;
81			}
82			return 0;
83			}
84
85			/* TODO: we used to make options bold with B<> and output an example too:
86
87			=item B<cat>
88
89			cat [B<-u>] [FILE]...
90
91			Concatenate FILE(s) and print them to stdout
92
93			Options:
94			-u Use unbuffered i/o (ignored)
95
96			Example:
97			$ cat /proc/uptime
98			110716.72 17.67
99
100			*/