86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/* help.c - Show help for toybox commands
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*
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* Copyright 2007 Rob Landley <rob@landley.net>
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*
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* Often a shell builtin.
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USE_HELP(NEWTOY(help, "ahu", TOYFLAG_BIN|TOYFLAG_MAYFORK))
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config HELP
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bool "help"
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default y
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depends on TOYBOX_HELP
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help
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usage: help [-ahu] [COMMAND]
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-a All commands
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-u Usage only
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-h HTML output
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Show usage information for toybox commands.
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Run "toybox" with no arguments for a list of available commands.
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*/
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#define FOR_help
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#include "toys.h"
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static void do_help(struct toy_list *t)
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{
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if (FLAG(h))
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xprintf("<a name=\"%s\"><h1>%s</h1><blockquote><pre>\n", t->name, t->name);
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toys.which = t;
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show_help(stdout, !FLAG(u)+(!!toys.argv[1]<<1));
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if (FLAG(h)) xprintf("</blockquote></pre>\n");
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}
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// Simple help is just toys.which = toy_find("name"); show_help(stdout, 1);
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// but iterating through html output and all commands is a bit more
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void help_main(void)
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{
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int i;
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// If called with no arguments as a builtin from the shell, show all builtins
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if (toys.rebound && !*toys.optargs && !toys.optflags) {
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for (i = 0; i < toys.toycount; i++) {
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if (!(toy_list[i].flags&(TOYFLAG_NOFORK|TOYFLAG_MAYFORK))) continue;
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toys.which = toy_list+i;
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show_help(stdout, FLAG(u));
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}
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return;
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}
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if (!FLAG(a)) {
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struct toy_list *t = toys.which;
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if (*toys.optargs && !(t = toy_find(*toys.optargs)))
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error_exit("Unknown command '%s'", *toys.optargs);
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do_help(t);
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return;
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}
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if (FLAG(h)) {
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sprintf(toybuf, "Toybox %s command help", toybox_version);
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xprintf("<html>\n<title>%s</title>\n<body>\n<h1>%s</h1><hr /><p>",
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toybuf, toybuf);
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for (i=0; i < toys.toycount; i++)
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xprintf("<a href=\"#%s\">%s</a> \n", toy_list[i].name, toy_list[i].name);
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xprintf("</p>\n");
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}
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for (i = 0; i < toys.toycount; i++) {
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if (FLAG(h)) xprintf("<hr>\n<pre>\n");
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else if (!FLAG(u)) {
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memset(toybuf, '-', 78);
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memcpy(toybuf+3, toy_list[i].name, strlen(toy_list[i].name));
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printf("\n%s\n\n", toybuf);
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}
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do_help(toy_list+i);
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if (FLAG(h)) xprintf("</pre>\n");
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}
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if (FLAG(h)) xprintf("</html>");
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}
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