Mercurial > hg > toybox
view toys/other/hello.c @ 674:7e846e281e38
New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
author | Rob Landley <rob@landley.net> |
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date | Mon, 08 Oct 2012 00:02:30 -0500 |
parents | 6df4ccc0acbe |
children | 786841fdb1e0 |
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/* vi: set sw=4 ts=4: * * hello.c - A hello world program. (Template for new commands.) * * Copyright 2012 Rob Landley <rob@landley.net> * * See http://opengroup.org/onlinepubs/9699919799/utilities/ * See http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/cmdbehav.html USE_HELLO(NEWTOY(hello, "e@d*c#b:a", 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". */ #define FOR_hello #include "toys.h" // Hello doesn't use these globals, they're here for example/skeleton purposes. GLOBALS( char *b_string; long c_number; struct arg_list *d_list; long e_count; int more_globals; ) void hello_main(void) { printf("Hello world\n"); if (toys.optflags & FLAG_a) printf("Saw a\n"); if (toys.optflags & FLAG_b) printf("b=%s\n", TT.b_string); if (toys.optflags & FLAG_c) printf("c=%ld\n", TT.c_number); while (TT.d_list) { printf("d=%s\n", TT.d_list->arg); TT.d_list = TT.d_list->next; } if (TT.e_count) printf("e was seen %ld times", TT.e_count); while (*toys.optargs) printf("optarg=%s\n", *(toys.optargs++)); }