-static string
-get_help_string ()
-{
- SCM alist = ly_hash2alist (option_hash);
- SCM convertor = ly_lily_module_constant ("scm->string");
-
- vector<string> opts;
-
- for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
- {
- SCM sym = scm_caar (s);
- SCM val = scm_cdar (s);
- string opt_spec
- = String_convert::char_string (' ', INDENT)
- + ly_symbol2string (sym)
- + " ("
- + ly_scm2string (scm_call_1 (convertor, val))
- + ")";
-
- if (opt_spec.length () + SEPARATION > HELP_INDENT)
- {
- opt_spec += "\n"
- + String_convert::char_string (' ', HELP_INDENT);
- }
- else
- opt_spec += String_convert::char_string (' ', HELP_INDENT - opt_spec.length ());
-
- SCM opt_help_scm
- = scm_object_property (sym, ly_symbol2scm ("program-option-documentation"));
- string opt_help = ly_scm2string (opt_help_scm);
- replace_all (opt_help,
- string ("\n"),
- string ("\n")
- + String_convert::char_string (' ', HELP_INDENT));
-
- opts.push_back (opt_spec + opt_help + "\n");
- }
-
- string help ("Options supported by ly:set-option\n\n");
- vector_sort (opts, less<string> ());
- for (vsize i = 0; i < opts.size (); i++)
- help += opts[i];
-
- help += string ("\n");
- return help;
-}
-
-LY_DEFINE (ly_option_usage, "ly:option-usage", 0, 0, 0, (),
- "Print ly:set-option usage")
-{
- string help = get_help_string ();
- fputs (help.c_str (), 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 (!option_hash)
- {
- option_hash = scm_permanent_object (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.substr (0, 3) == string ("no-"))
- {
- var = ly_symbol2scm (varstr.substr (3, varstr.length () -3).c_str ());
- 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.c_str ()));
-
- internal_set_option (var, val);
- return SCM_UNSPECIFIED;
-}
-
-LY_DEFINE (ly_command_line_verbose_p, "ly:command-line-verbose?", 0, 0, 0, (),
- "Was be_verbose_global set?")
-{
- return scm_from_bool (be_verbose_global);
-}
-
-