annotate lib/help.c @ 858:34ac05521d94

Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
author Rob Landley <rob@landley.net>
date Sun, 14 Apr 2013 21:43:22 -0500
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children c5e80c74ec6c
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34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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1 // Function to display help text
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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2
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3 #include "toys.h"
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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4
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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5 #if !CFG_TOYBOX_HELP
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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6 void show_help(char *command) {;}
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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7 #else
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8 #include "generated/help.h"
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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9
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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10 #undef NEWTOY
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11 #undef OLDTOY
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12 #define NEWTOY(name,opt,flags) help_##name "\0"
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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13 #define OLDTOY(name,oldname,opts,flags) "\xff" #oldname "\0"
34ac05521d94 Move guts of help command into show_help() in lib/help.c, with config TOYBOX_HELP controlling infrastructure.
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14 static char *help_data =
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15 #include "generated/newtoys.h"
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16 ;
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17
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18 void show_help(void)
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19 {
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20 int i = toys.which-toy_list;
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21 char *s;
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22
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23 for (;;) {
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24 s = help_data;
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25 while (i--) s += strlen(s) + 1;
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26 // If it's an alias, restart search for real name
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27 if (*s != 255) break;
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28 i = toy_find(++s)-toy_list;
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29 }
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30
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31 fprintf(toys.exithelp ? stderr : stdout, "%s", s);
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32 }
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33 #endif