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