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-rw-r--r--toys/other/help.c48
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diff --git a/toys/other/help.c b/toys/other/help.c
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+/* 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);
+}