1 files changed, 48 insertions, 0 deletions
diff --git a/toys/other/help.c b/toys/other/help.c
new file mode 100644
index 00000000..5e2b6ec4
--- /dev/null
+++ b/toys/other/help.c
@@ -0,0 +1,48 @@
+/* vi: set sw=4 ts=4:
+ *
+ * help.c - Show help for toybox
+ *
+ * Copyright 2007 Rob Landley <rob@landley.net>
+ *
+ * Not in SUSv3, but exists as a bash builtin.
+
+USE_HELP(NEWTOY(help, "<1", TOYFLAG_BIN))
+
+config HELP
+	bool "help"
+	default y
+	help
+	  usage: help [command]
+
+	  Show usage information for toybox commands.
+	  Run "toybox" with no arguments for a list of available commands.
+*/
+ 
+
+#include "toys.h"
+#include "generated/help.h"
+
+#undef NEWTOY
+#undef OLDTOY
+#define NEWTOY(name,opt,flags) help_##name "\0"
+#define OLDTOY(name,oldname,opts,flags) "\xff" #oldname "\0"
+static char *help_data =
+#include "generated/newtoys.h"
+;
+
+void help_main(void)
+{
+	struct toy_list *t = toy_find(*toys.optargs);
+	int i = t-toy_list;
+	char *s = help_data;
+
+	if (!t) error_exit("Unknown command '%s'", *toys.optargs);
+	for (;;) {
+		while (i--) s += strlen(s) + 1;
+		if (*s != 255) break;
+		i = toy_find(++s)-toy_list;
+		s = help_data;
+	}
+
+	fprintf(toys.exithelp ? stderr : stdout, "%s", s);
+}