-LY_DEFINE (ly_option_usage, "ly:option-usage", 0, 0, 0, (),
- "Print ly:set-option usage")
-{
- String help = get_help_string ();
- fputs (help.to_str0 (), stdout);
-
- exit (0);
- return SCM_UNSPECIFIED;
-}
-
-LY_DEFINE (ly_add_option, "ly:add-option", 3, 0, 0,
- (SCM sym, SCM val, SCM description),
- "Add a program option @var{sym} with default @var{val}.")
-{
- if (scm_hash_table_p (option_hash_) == SCM_BOOL_F)
- option_hash_ = scm_c_make_hash_table (11);
-
- SCM_ASSERT_TYPE (scm_is_symbol (sym), sym, SCM_ARG1, __FUNCTION__, "symbol");
- SCM_ASSERT_TYPE (scm_is_string (description), description,
- SCM_ARG3, __FUNCTION__, "string");
-
- internal_set_option (sym, val);
-
- scm_set_object_property_x (sym, ly_symbol2scm ("program-option-documentation"),
- description);
-
- return SCM_UNSPECIFIED;
-}
-
-LY_DEFINE (ly_set_option, "ly:set-option", 1, 1, 0, (SCM var, SCM val),
- "Set a program option. Try setting 'help for a help string.")
-{
- SCM_ASSERT_TYPE (scm_is_symbol (var), var, SCM_ARG1,
- __FUNCTION__, "symbol");
-
- if (ly_symbol2scm ("help") == var)
- ly_option_usage ();
-
- if (val == SCM_UNDEFINED)
- val = SCM_BOOL_T;
-
- String varstr = ly_scm2string (scm_symbol_to_string (var));
- if (varstr.left_string (3) == String ("no-"))
- {
- var = ly_symbol2scm (varstr.nomid_string (0, 3).to_str0 ());
- val = scm_from_bool (!to_boolean (val));
- }
-
- SCM handle = scm_hashq_get_handle (option_hash_, var);
- if (handle == SCM_BOOL_F)
- warning (_f ("no such internal option: %s", varstr.to_str0 ()));
-
- internal_set_option (var, val);
- return SCM_UNSPECIFIED;
-}
-
-LY_DEFINE (ly_get_option, "ly:get-option", 1, 0, 0, (SCM var),
- "Get a global option setting.")
-{
- SCM_ASSERT_TYPE (scm_is_symbol (var), var,
- SCM_ARG1, __FUNCTION__, "symbol");
- return scm_hashq_ref (option_hash_, var, SCM_BOOL_F);
-}