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-rw-r--r--toys/Config.in58
-rw-r--r--toys/help.c33
-rw-r--r--toys/toylist.h3
3 files changed, 92 insertions, 2 deletions
diff --git a/toys/Config.in b/toys/Config.in
index 2e9127dc..e6f9636c 100644
--- a/toys/Config.in
+++ b/toys/Config.in
@@ -1,5 +1,16 @@
menu "Toys"
+# Fake config symbol to attach help entry to.
+
+config TOYBOX
+ bool
+ default n
+ help
+ usage: toybox [command] [arguments...]
+
+ With no arguments, shows available commands. First argument is
+ name of a command to run, followed by any arguments to that command.
+
config BZCAT
bool "bzcat"
default n
@@ -90,6 +101,22 @@ config HELLO
help
A hello world program. You don't need this.
+config HELP
+ bool "help"
+ default y
+ help
+ usage: help [command]
+
+ Show usage information for toybox commands.
+
+config HELP_LONG
+ bool "Verbose help text"
+ default y
+ depends on HELP
+ help
+ Show more than one line of help information per command.
+
+
config MDEV
bool "mdev"
default n
@@ -216,7 +243,7 @@ config READLINK_F
help
usage: readlink [-f]
- -f Show final location, including normal files and multiple symlinks.
+ -f Show final location, including normal files and multiple symlinks.
config SLEEP
bool "sleep"
@@ -366,6 +393,35 @@ config TOYSH_BUILTINS
Adds the commands exec, fg, bg, help, jobs, pwd, export, source, set,
unset, read, alias.
+config EXIT
+ bool
+ default n
+ depends on TOYSH
+ help
+ usage: exit [status]
+
+ Exit shell. If no return value supplied on command line, use value
+ of most recent command, or 0 if none.
+
+config CD
+ bool
+ default n
+ depends on TOYSH
+ help
+ usage: cd [path]
+
+ Change current directory. With no arguments, go to $HOME.
+
+config CD_P
+ bool # "-P support for cd"
+ default n
+ depends on TOYSH
+ help
+ usage: cd [-PL]
+
+ -P Physical path: resolve symlinks in path.
+ -L Cancel previous -P and restore default behavior.
+
config TRUE
bool "true"
default y
diff --git a/toys/help.c b/toys/help.c
new file mode 100644
index 00000000..6af743fc
--- /dev/null
+++ b/toys/help.c
@@ -0,0 +1,33 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * help.c - Show help for toybox
+ */
+
+#include "toys.h"
+#include "toys/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 "toys/toylist.h"
+;
+
+int 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'\n", *toys.optargs);
+ for (;;) {
+ while (i--) s += strlen(s) + 1;
+ if (*s != 255) break;
+ i = toy_find(++s)-toy_list;
+ s = help_data;
+ }
+
+ printf("%s", s);
+ return 0;
+}
diff --git a/toys/toylist.h b/toys/toylist.h
index 0b3845d9..deeb6204 100644
--- a/toys/toylist.h
+++ b/toys/toylist.h
@@ -95,7 +95,8 @@ USE_DF(NEWTOY(df, "Pkt*a", TOYFLAG_USR|TOYFLAG_SBIN))
USE_ECHO(NEWTOY(echo, "+en", TOYFLAG_BIN))
USE_TOYSH(NEWTOY(exit, NULL, TOYFLAG_NOFORK))
USE_FALSE(NEWTOY(false, NULL, TOYFLAG_BIN))
-USE_HELLO(NEWTOY(hello, NULL, TOYFLAG_USR))
+USE_HELLO(NEWTOY(hello, NULL, TOYFLAG_USR|TOYFLAG_BIN))
+USE_HELP(NEWTOY(help, "<1", TOYFLAG_BIN))
USE_MKE2FS(NEWTOY(mke2fs, MKE2FS_OPTSTRING, TOYFLAG_SBIN))
USE_ONEIT(NEWTOY(oneit, "+<1p", TOYFLAG_SBIN))
USE_PWD(NEWTOY(pwd, NULL, TOYFLAG_BIN))