2 scm-option.cc -- implement option setting from Scheme
4 source file of the GNU LilyPond music typesetter
6 (c) 2001--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "program-option.hh"
15 #include "international.hh"
17 #include "parse-scm.hh"
18 #include "string-convert.hh"
21 /* Write midi as formatted ascii stream? */
22 bool do_midi_debugging_global;
26 Backwards compatibility.
28 bool lily_1_8_relative = false;
29 bool lily_1_8_compatibility_used = false;
30 bool profile_property_accesses = false;
32 crash if internally the wrong type is used for a grob property.
34 bool do_internal_type_checking_global;
35 bool strict_infinity_checking = false;
37 static SCM option_hash;
39 void internal_set_option (SCM var, SCM val)
41 scm_hashq_set_x (option_hash, var, val);
45 else if (var == ly_symbol2scm ("profile-property-accesses"))
47 profile_property_accesses = to_boolean (val);
48 val = scm_from_bool (to_boolean (val));
50 else if (var == ly_symbol2scm ("debug-midi"))
52 do_midi_debugging_global = to_boolean (val);
53 val = scm_from_bool (to_boolean (val));
55 else if (var == ly_symbol2scm ("point-and-click"))
57 point_and_click_global = to_boolean (val);
58 val = scm_from_bool (to_boolean (val));
60 else if (var == ly_symbol2scm ("protected-scheme-parsing"))
62 parse_protect_global = to_boolean (val);
63 val = scm_from_bool (to_boolean (val));
65 else if (var == ly_symbol2scm ("check-internal-types"))
67 do_internal_type_checking_global = to_boolean (val);
68 val = scm_from_bool (to_boolean (val));
70 else if (var == ly_symbol2scm ("debug-gc-assert-parsed-dead"))
72 parsed_objects_should_be_dead = to_boolean (val);
73 val = scm_from_bool (parsed_objects_should_be_dead);
75 else if (var == ly_symbol2scm ("old-relative"))
77 lily_1_8_relative = to_boolean (val);
78 /* Needs to be reset for each file that uses this option. */
79 lily_1_8_compatibility_used = to_boolean (val);
80 val = scm_from_bool (to_boolean (val));
82 else if (var == ly_symbol2scm ("object-keys"))
84 use_object_keys = to_boolean (val);
85 val = scm_from_bool (to_boolean (val));
87 else if (var == ly_symbol2scm ("strict-infinity-checking"))
89 strict_infinity_checking = to_boolean (val);
90 val = scm_from_bool (to_boolean (val));
94 ssize const HELP_INDENT = 30;
95 ssize const INDENT = 2;
96 ssize const SEPARATION = 5;
99 Hmmm. should do in SCM / C++ ?
104 SCM alist = ly_hash2alist (option_hash);
105 SCM convertor = ly_lily_module_constant ("scm->string");
109 for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
111 SCM sym = scm_caar (s);
112 SCM val = scm_cdar (s);
114 = String_convert::char_string (' ', INDENT)
115 + ly_symbol2string (sym)
117 + ly_scm2string (scm_call_1 (convertor, val))
120 if (opt_spec.length () + SEPARATION > HELP_INDENT)
123 + String_convert::char_string (' ', HELP_INDENT);
126 opt_spec += String_convert::char_string (' ', HELP_INDENT - opt_spec.length ());
129 = scm_object_property (sym, ly_symbol2scm ("program-option-documentation"));
130 string opt_help = ly_scm2string (opt_help_scm);
131 replace_all (opt_help,
134 + String_convert::char_string (' ', HELP_INDENT));
136 opts.push_back (opt_spec + opt_help + "\n");
139 string help ("Options supported by ly:set-option\n\n");
140 vector_sort (opts, less<string> ());
141 for (vsize i = 0; i < opts.size (); i++)
144 help += string ("\n");
148 LY_DEFINE (ly_option_usage, "ly:option-usage", 0, 0, 0, (),
149 "Print ly:set-option usage")
151 string help = get_help_string ();
152 fputs (help.c_str (), stdout);
155 return SCM_UNSPECIFIED;
158 LY_DEFINE (ly_add_option, "ly:add-option", 3, 0, 0,
159 (SCM sym, SCM val, SCM description),
160 "Add a program option @var{sym} with default @var{val}.")
164 option_hash = scm_permanent_object (scm_c_make_hash_table (11));
166 SCM_ASSERT_TYPE (scm_is_symbol (sym), sym, SCM_ARG1, __FUNCTION__, "symbol");
167 SCM_ASSERT_TYPE (scm_is_string (description), description,
168 SCM_ARG3, __FUNCTION__, "string");
170 internal_set_option (sym, val);
172 scm_set_object_property_x (sym, ly_symbol2scm ("program-option-documentation"),
175 return SCM_UNSPECIFIED;
178 LY_DEFINE (ly_set_option, "ly:set-option", 1, 1, 0, (SCM var, SCM val),
179 "Set a program option. Try setting 'help for a help string.")
181 SCM_ASSERT_TYPE (scm_is_symbol (var), var, SCM_ARG1,
182 __FUNCTION__, "symbol");
184 if (ly_symbol2scm ("help") == var)
187 if (val == SCM_UNDEFINED)
190 string varstr = ly_scm2string (scm_symbol_to_string (var));
191 if (varstr.substr (0, 3) == string ("no-"))
193 var = ly_symbol2scm (varstr.substr (3, varstr.length () -3).c_str ());
194 val = scm_from_bool (!to_boolean (val));
197 SCM handle = scm_hashq_get_handle (option_hash, var);
198 if (handle == SCM_BOOL_F)
199 warning (_f ("no such internal option: %s", varstr.c_str ()));
201 internal_set_option (var, val);
202 return SCM_UNSPECIFIED;
205 LY_DEFINE (ly_command_line_verbose_p, "ly:command-line-verbose?", 0, 0, 0, (),
206 "Was be_verbose_global set?")
208 return scm_from_bool (be_verbose_global);
214 LY_DEFINE (ly_get_option, "ly:get-option", 1, 0, 0, (SCM var),
215 "Get a global option setting.")
217 SCM_ASSERT_TYPE (scm_is_symbol (var), var,
218 SCM_ARG1, __FUNCTION__, "symbol");
219 return scm_hashq_ref (option_hash, var, SCM_BOOL_F);
224 get_program_option (const char *s)
226 SCM sym = ly_symbol2scm (s);
228 return to_boolean (ly_get_option (sym));