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/* hello.c - A hello world program. (Template for new commands.)
*
* Copyright 2012 Rob Landley <rob@landley.net>
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/
* See http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/cmdbehav.html
// Accept many different kinds of command line argument:
USE_HELLO(NEWTOY(hello, "(walrus)(blubber):;(also):e@d*c#b:a", TOYFLAG_USR|TOYFLAG_BIN))
USE_HELLO_ALIAS(NEWTOY(hello_alias, "b:dq", TOYFLAG_USR|TOYFLAG_BIN))
config HELLO
bool "hello"
default n
help
usage: hello [-a] [-b STRING] [-c NUMBER] [-d LIST] [-e COUNT] [...]
A hello world program. You don't need this.
Mostly used as an example/skeleton file for adding new commands,
occasionally nice to test kernel booting via "init=/bin/hello".
config HELLO_ALIAS
bool "hello_alias"
default n
depends on HELLO
help
usage: hello_alias [-dq] [-b NUMBER]
Example of a second command with different arguments in the same source
file as the first. Allows shared infrastructure not added to lib.
*/
#define FOR_hello
#include "toys.h"
// Hello doesn't use these globals, they're here for example/skeleton purposes.
GLOBALS(
union {
struct {
char *b_string;
long c_number;
struct arg_list *d_list;
long e_count;
char *also_string;
char *blubber_string;
} h;
struct {
long b_number;
} a;
};
int more_globals;
)
// Parse many different kinds of command line argument:
void hello_main(void)
{
char **optargs;
printf("Hello world\n");
if (toys.optflags) printf("flags=%x\n", toys.optflags);
if (toys.optflags & FLAG_a) printf("Saw a\n");
if (toys.optflags & FLAG_b) printf("b=%s\n", TT.h.b_string);
if (toys.optflags & FLAG_c) printf("c=%ld\n", TT.h.c_number);
while (TT.h.d_list) {
printf("d=%s\n", TT.h.d_list->arg);
TT.h.d_list = TT.h.d_list->next;
}
if (TT.h.e_count) printf("e was seen %ld times\n", TT.h.e_count);
for (optargs = toys.optargs; *optargs; optargs++)
printf("optarg=%s\n", *optargs);
if (toys.optflags & FLAG_walrus) printf("Saw --walrus\n");
if (TT.h.blubber_string) printf("--blubber=%s\n", TT.h.blubber_string);
}
#define CLEANUP_hello
#define FOR_hello_alias
#include "generated/flags.h"
void hello_alias_main(void)
{
printf("hello world %x\n", toys.optflags);
if (toys.optflags & FLAG_b) printf("b=%ld", TT.a.b_number);
}
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