2 program-option-scheme.cc -- implement option setting from Scheme
4 source file of the GNU LilyPond music typesetter
6 (c) 2001--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "program-option.hh"
16 #include "international.hh"
18 #include "parse-scm.hh"
19 #include "string-convert.hh"
23 bool debug_property_callbacks;
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 ("point-and-click"))
52 point_and_click_global = to_boolean (val);
53 val = scm_from_bool (to_boolean (val));
55 else if (var == ly_symbol2scm ("protected-scheme-parsing"))
57 parse_protect_global = to_boolean (val);
58 val = scm_from_bool (to_boolean (val));
60 else if (var == ly_symbol2scm ("check-internal-types"))
62 do_internal_type_checking_global = to_boolean (val);
63 val = scm_from_bool (to_boolean (val));
65 else if (var == ly_symbol2scm ("debug-gc-assert-parsed-dead"))
67 parsed_objects_should_be_dead = to_boolean (val);
68 val = scm_from_bool (parsed_objects_should_be_dead);
70 else if (var == ly_symbol2scm ("safe"))
72 be_safe_global = to_boolean (val);
73 val = scm_from_bool (be_safe_global);
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 ("strict-infinity-checking"))
84 strict_infinity_checking = to_boolean (val);
85 val = scm_from_bool (to_boolean (val));
87 else if (var == ly_symbol2scm ("debug-skylines"))
89 debug_skylines = to_boolean (val);
90 val = scm_from_bool (to_boolean (val));
92 else if (var == ly_symbol2scm ("debug-property-callbacks"))
94 debug_property_callbacks = to_boolean (val);
95 val = scm_from_bool (to_boolean (val));
101 ssize const HELP_INDENT = 30;
102 ssize const INDENT = 2;
103 ssize const SEPARATION = 5;
106 Hmmm. should do in SCM / C++ ?
111 SCM alist = ly_hash2alist (option_hash);
112 SCM convertor = ly_lily_module_constant ("scm->string");
116 for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
118 SCM sym = scm_caar (s);
119 SCM val = scm_cdar (s);
121 = String_convert::char_string (' ', INDENT)
122 + ly_symbol2string (sym)
124 + ly_scm2string (scm_call_1 (convertor, val))
127 if (opt_spec.length () + SEPARATION > HELP_INDENT)
130 + String_convert::char_string (' ', HELP_INDENT);
133 opt_spec += String_convert::char_string (' ', HELP_INDENT - opt_spec.length ());
136 = scm_object_property (sym, ly_symbol2scm ("program-option-documentation"));
137 string opt_help = ly_scm2string (opt_help_scm);
138 replace_all (opt_help,
141 + String_convert::char_string (' ', HELP_INDENT));
143 opts.push_back (opt_spec + opt_help + "\n");
146 string help ("Options supported by ly:set-option\n\n");
147 vector_sort (opts, less<string> ());
148 for (vsize i = 0; i < opts.size (); i++)
151 help += string ("\n");
156 LY_DEFINE (ly_option_usage, "ly:option-usage", 0, 0, 0, (),
157 "Print @code{ly:set-option} usage")
159 string help = get_help_string ();
160 progress_indication (help);
162 return SCM_UNSPECIFIED;
165 LY_DEFINE (ly_add_option, "ly:add-option", 3, 0, 0,
166 (SCM sym, SCM val, SCM description),
167 "Add a program option @var{sym} with default @var{val}.")
171 option_hash = scm_permanent_object (scm_c_make_hash_table (11));
173 LY_ASSERT_TYPE (ly_is_symbol, sym, 1);
174 LY_ASSERT_TYPE (scm_is_string, description, 3);
176 internal_set_option (sym, val);
178 scm_set_object_property_x (sym, ly_symbol2scm ("program-option-documentation"),
181 return SCM_UNSPECIFIED;
184 LY_DEFINE (ly_set_option, "ly:set-option", 1, 1, 0, (SCM var, SCM val),
185 "Set a program option.")
187 LY_ASSERT_TYPE (ly_is_symbol, var, 1);
189 if (val == SCM_UNDEFINED)
192 string varstr = ly_scm2string (scm_symbol_to_string (var));
193 if (varstr.substr (0, 3) == string ("no-"))
195 var = ly_symbol2scm (varstr.substr (3, varstr.length () -3).c_str ());
196 val = scm_from_bool (!to_boolean (val));
199 SCM handle = scm_hashq_get_handle (option_hash, var);
200 if (handle == SCM_BOOL_F)
201 warning (_f ("no such internal option: %s", varstr.c_str ()));
203 internal_set_option (var, val);
204 return SCM_UNSPECIFIED;
207 LY_DEFINE (ly_command_line_options, "ly:command-line-options", 0, 0, 0, (),
208 "The Scheme specified on command-line with @samp{-d}.")
210 return ly_string2scm (init_scheme_variables_global);
213 LY_DEFINE (ly_command_line_code, "ly:command-line-code", 0, 0, 0, (),
214 "The Scheme specified on command-line with @samp{-e}.")
216 return ly_string2scm (init_scheme_code_global);
219 LY_DEFINE (ly_command_line_verbose_p, "ly:command-line-verbose?", 0, 0, 0, (),
220 "Was be_verbose_global set?")
222 return scm_from_bool (be_verbose_global);
227 LY_DEFINE (ly_all_options, "ly:all-options",
229 "Get all option settings in an alist.")
231 return ly_hash2alist (option_hash);
235 LY_DEFINE (ly_get_option, "ly:get-option", 1, 0, 0, (SCM var),
236 "Get a global option setting.")
238 LY_ASSERT_TYPE (ly_is_symbol, var, 1);
239 return scm_hashq_ref (option_hash, var, SCM_BOOL_F);