/* help.c - Show help for toybox commands * * Copyright 2007 Rob Landley * * 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("

%s

\n", t->name, t->name);

  toys.which = t;
  show_help(stdout, FLAG(h)+!FLAG(u));

  if (FLAG(h)) xprintf("

\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("\n%s\n\n

%s

", toybuf, toybuf); for (i=0; i < toys.toycount; i++) xprintf("%s \n", toy_list[i].name, toy_list[i].name); xprintf("

\n"); } for (i = 0; i < toys.toycount; i++) { if (FLAG(h)) xprintf("

\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("

\n"); } if (FLAG(h)) xprintf(""); }