annotate toys/help.c @ 182:ed26d3529575

Patch from Charlie Shepherd: remove extra \n from error_exit() arguments.
author Rob Landley <rob@landley.net>
date Tue, 27 Nov 2007 01:41:32 -0600
parents 1fbc50374a30
children 25447caf1b4b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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fb0745eec453 Add "help" command. (Building help/help.h requires python, but I'll ship
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1 /* vi: set sw=4 ts=4: */
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2 /*
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3 * help.c - Show help for toybox
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4 */
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5
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6 #include "toys.h"
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7 #include "toys/help.h"
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8
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9 #undef NEWTOY
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10 #undef OLDTOY
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11 #define NEWTOY(name,opt,flags) help_##name "\0"
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12 #define OLDTOY(name,oldname,opts,flags) "\xff" #oldname "\0"
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13 static char *help_data =
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14 #include "toys/toylist.h"
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15 ;
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16
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17 int help_main(void)
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18 {
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19 struct toy_list *t = toy_find(*toys.optargs);
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20 int i = t-toy_list;
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21 char *s = help_data;
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22
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ed26d3529575 Patch from Charlie Shepherd: remove extra \n from error_exit() arguments.
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23 if (!t) error_exit("Unknown command '%s'", *toys.optargs);
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24 for (;;) {
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25 while (i--) s += strlen(s) + 1;
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26 if (*s != 255) break;
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27 i = toy_find(++s)-toy_list;
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28 s = help_data;
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29 }
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30
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1fbc50374a30 Promote help to global config option, teach error_exit() to output usage message when called
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31 fprintf(toys.exithelp ? stderr : stdout, "%s", s);
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32 return 0;
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33 }