2 lily-guile.cc -- implement assorted guile functions
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
7 Han-Wen Nienhuys <hanwen@cs.uu.nl>
13 #include <math.h> /* isinf */
14 #include <string.h> /* strdup, strchr */
17 #include "lily-proto.hh"
21 source-file.hh includes cmath which undefines isinf and isnan
23 FIXME: #ifdef MACOS_X?
25 inline int my_isinf (Real r) { return isinf (r); }
26 inline int my_isnan (Real r) { return isnan (r); }
29 #include "libc-extension.hh"
30 #include "lily-guile.hh"
32 #include "file-path.hh"
34 #include "direction.hh"
36 #include "interval.hh"
38 #include "dimensions.hh"
39 #include "source-file.hh"
46 return ly_car (scm_last_pair (list));
53 SCM port = scm_mkstrport (SCM_INUM0,
54 scm_make_string (SCM_INUM0, SCM_UNDEFINED),
57 // SCM write = scm_eval_3 (ly_symbol2scm ("write"), s, SCM_EOL);
58 SCM write = scm_primitive_eval (ly_symbol2scm ("write"));
60 // scm_apply (write, port, SCM_EOL);
61 scm_call_2 (write, s, port);
62 return scm_strport_to_string (port);
69 return scm_list_n (ly_symbol2scm ("quote"), s, SCM_UNDEFINED);
73 ly_symbol2string (SCM s)
75 assert (ly_c_symbol_p (s));
76 return String ((Byte*)SCM_STRING_CHARS (s), (int) SCM_STRING_LENGTH (s));
80 gulp_file_to_string (String fn)
82 String s = global_path.find (fn);
85 String e = _f ("can't find file: `%s'", fn);
87 e += _f ("(load path: `%s')", global_path.to_string ());
90 else if (verbose_global_b)
91 progress_indication ("[" + s);
94 char * str = gulp_file (s, &n);
99 progress_indication ("]");
104 LY_DEFINE (ly_gulp_file, "ly:gulp-file",
106 "Read the file @var{name}, and return its contents in a string. "
107 "The file is looked up using the search path.")
109 SCM_ASSERT_TYPE (ly_c_string_p (name), name, SCM_ARG1, __FUNCTION__, "string");
110 return scm_makfrom0str (gulp_file_to_string (ly_scm2string (name)).to_str0 ());
115 // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
117 ly_display_scm (SCM s)
119 scm_display (s, scm_current_output_port ());
120 scm_newline (scm_current_output_port ());
125 ly_scm2string (SCM s)
127 assert (ly_c_string_p (s));
129 char *p = SCM_STRING_CHARS (s);
135 ly_scm2newstr (SCM str, size_t *lenp)
137 SCM_ASSERT_TYPE (ly_c_string_p (str), str, SCM_ARG1, __FUNCTION__, "string");
139 size_t len = SCM_STRING_LENGTH (str);
140 if (char *new_str = (char *) malloc ((len + 1) * sizeof (char)))
142 memcpy (new_str, SCM_STRING_CHARS (str), len);
154 index_get_cell (SCM s, Direction d)
158 return (d == LEFT) ? ly_car (s) : ly_cdr (s);
162 index_set_cell (SCM s, Direction d, SCM v)
165 scm_set_car_x (s, v);
167 scm_set_cdr_x (s, v);
171 LY_DEFINE (ly_warn, "ly:warn",
172 1, 0, 1, (SCM str, SCM rest),
173 "Scheme callable function to issue the warning @code{msg}. "
174 "The message is formatted with @code{format} and @code{rest}.")
176 SCM_ASSERT_TYPE (ly_c_string_p (str), str, SCM_ARG1, __FUNCTION__, "string");
177 progress_indication ("\n");
179 str = scm_simple_format (SCM_BOOL_F, str, rest);
180 warning ("lily-guile: " + ly_scm2string (str));
181 return SCM_UNSPECIFIED;
184 LY_DEFINE (ly_programming_error, "ly:programming-error",
185 1, 0, 1, (SCM str, SCM rest),
186 "Scheme callable function to issue the warning @code{msg}. "
187 "The message is formatted with @code{format} and @code{rest}.")
189 SCM_ASSERT_TYPE (ly_c_string_p (str), str, SCM_ARG1, __FUNCTION__, "string");
190 progress_indication ("\n");
192 str = scm_simple_format (SCM_BOOL_F, str, rest);
193 programming_error (ly_scm2string (str));
194 return SCM_UNSPECIFIED;
197 LY_DEFINE (ly_dir_p, "ly:dir?",
199 "type predicate. A direction is @code{-1}, @code{0} or "
200 "@code{1}, where @code{-1} represents "
201 "left or down and @code{1} represents right or up.")
203 if (ly_c_number_p (s))
205 int i = ly_scm2int (s);
206 return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
212 is_number_pair (SCM p)
214 return ly_c_pair_p (p)
215 && ly_c_number_p (ly_car (p)) && ly_c_number_p (ly_cdr (p));
218 typedef void (*Void_fptr) ();
219 Array<Void_fptr> *scm_init_funcs_;
221 void add_scm_init_func (void (*f) ())
223 if (!scm_init_funcs_)
224 scm_init_funcs_ = new Array<Void_fptr>;
226 scm_init_funcs_->push (f);
230 ly_init_ly_module (void *)
232 for (int i=scm_init_funcs_->size () ; i--;)
233 (scm_init_funcs_->elem (i)) ();
235 if (verbose_global_b)
236 progress_indication ("\n");
238 scm_primitive_load_path (scm_makfrom0str ("lily.scm"));
241 SCM global_lily_module;
246 global_lily_module = scm_c_define_module ("lily", ly_init_ly_module, 0);
247 scm_c_use_module ("lily");
253 return scm_ihashv (s, ~1u);
259 if (ly_c_number_p (s))
261 int i = ly_scm2int (s);
262 return i>= -1 && i <= 1;
270 if (ly_c_number_p (s))
272 int i = ly_scm2int (s);
273 return i== 0 || i == 1;
281 return scm_is_integer (s) ? (Direction) ly_scm2int (s) : CENTER;
285 ly_scm2interval (SCM p)
287 return Interval (ly_scm2double (ly_car (p)), ly_scm2double (ly_cdr (p)));
291 ly_scm2realdrul (SCM p)
293 return Drul_array<Real> (ly_scm2double (ly_car (p)),
294 ly_scm2double (ly_cdr (p)));
298 ly_interval2scm (Drul_array<Real> i)
300 return scm_cons (scm_make_real (i[LEFT]), scm_make_real (i[RIGHT]));
306 return ly_c_boolean_p (s) && ly_scm2bool (s);
309 /* Appendable list L: the cdr contains the list, the car the last cons
314 SCM s = scm_cons (SCM_EOL, SCM_EOL);
315 scm_set_car_x (s, s);
321 appendable_list_append (SCM l, SCM elt)
323 SCM newcons = scm_cons (elt, SCM_EOL);
325 scm_set_cdr_x (ly_car (l), newcons);
326 scm_set_car_x (l, newcons);
330 ly_offset2scm (Offset o)
332 return scm_cons (scm_make_real (o[X_AXIS]), scm_make_real (o[Y_AXIS]));
336 ly_scm2offset (SCM s)
338 return Offset (ly_scm2double (ly_car (s)),
339 ly_scm2double (ly_cdr (s)));
342 LY_DEFINE (ly_number2string, "ly:number->string",
344 "Convert @var{num} to a string without generating many decimals.")
346 SCM_ASSERT_TYPE (ly_c_number_p (s), s, SCM_ARG1, __FUNCTION__, "number");
348 char str[400]; // ugh.
350 if (scm_exact_p (s) == SCM_BOOL_F)
352 Real r (ly_scm2double (s));
354 if (my_isinf (r) || my_isnan (r))
356 programming_error ("Infinity or NaN encountered while converting Real number; setting to zero.");
360 sprintf (str, "%08.4f", r);
363 sprintf (str, "%d", ly_scm2int (s));
365 return scm_makfrom0str (str);
370 LY_DEFINE (ly_version, "ly:version", 0, 0, 0, (),
371 "Return the current lilypond version as a list, e.g. @code{(1 3 127 uu1)}. ")
373 char const* vs = "\'(" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")" ;
375 return scm_c_eval_string ((char*)vs);
378 LY_DEFINE (ly_unit, "ly:unit", 0, 0, 0, (),
379 "Return the unit used for lengths as a string.")
381 return scm_makfrom0str (INTERNAL_UNIT);
386 LY_DEFINE (ly_dimension_p, "ly:dimension?", 1, 0, 0, (SCM d),
387 "Return @var{d} is a number. Used to distinguish length "
388 "variables from normal numbers.")
390 return scm_number_p (d);
394 ly_deep_copy (SCM src)
396 if (ly_c_pair_p (src))
397 return scm_cons (ly_deep_copy (ly_car (src)), ly_deep_copy (ly_cdr (src)));
398 else if (ly_c_vector_p (src))
400 int len = SCM_VECTOR_LENGTH (src);
401 SCM nv = scm_c_make_vector (len, SCM_UNDEFINED);
402 for (int i =0 ; i < len ; i++)
404 SCM si = scm_int2num (i);
405 scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si)));
415 ly_assoc_chain (SCM key, SCM achain)
417 if (ly_c_pair_p (achain))
419 SCM handle = scm_assoc (key, ly_car (achain));
420 if (ly_c_pair_p (handle))
423 return ly_assoc_chain (key, ly_cdr (achain));
429 /* looks the key up in the cdrs of the alist-keys
430 - ignoring the car and ignoring non-pair keys.
431 Returns first match found, i.e.
439 I would like (ly_assoc_cdr 1) to return 12 - because it's the first
440 element with the cdr of the key = 1. In other words (alloc_cdr key)
443 (alloc (anything . key))
449 ly_assoc_cdr (SCM key, SCM alist)
451 if (ly_c_pair_p (alist))
453 SCM trykey = ly_caar (alist);
454 if (ly_c_pair_p (trykey) && to_boolean (scm_equal_p (key, ly_cdr (trykey))))
455 return ly_car (alist);
457 return ly_assoc_cdr (key, ly_cdr (alist));
462 /* LST has the form "sym1 sym2 sym3\nsym4\nsym5"
463 i.e. \n and ' ' can be used interchangeably as separators. */
465 parse_symbol_list (char const *lst)
467 char *s = strdup (lst);
469 SCM create_list = SCM_EOL;
471 char * e = s + strlen (s) - 1;
472 while (e >= s && isspace (*e))
475 for (char * p = s; *p; p++)
484 char *next = strchr (s, ' ');
488 create_list = scm_cons (ly_symbol2scm (s), create_list);
497 ly_truncate_list (int k, SCM lst)
505 for (; ly_c_pair_p (s) && k--; s = ly_cdr (s))
509 scm_set_cdr_x (s, SCM_EOL);
515 print_scm_val (SCM val)
517 String realval = ly_scm2string (ly_write2scm (val));
518 if (realval.length () > 200)
519 realval = realval.left_string (100)
521 + realval.right_string (100);
526 type_check_assignment (SCM sym, SCM val, SCM type_symbol)
534 TODO: should remove #f from allowed vals?
536 if (val == SCM_EOL || val == SCM_BOOL_F)
539 if (!ly_c_symbol_p (sym))
544 This is used for autoBeamSettings.
546 TODO: deprecate the use of \override and \revert for
549 or use a symbol autoBeamSettingS?
554 SCM type = scm_object_property (sym, type_symbol);
556 if (type != SCM_EOL && !ly_c_procedure_p (type))
558 warning (_f ("Can't find property type-check for `%s' (%s).",
559 ly_symbol2string (sym).to_str0 (),
560 ly_symbol2string (type_symbol).to_str0 ())
561 + " " + _ ("Perhaps you made a typing error?"));
563 /* Be strict when being anal :) */
564 if (internal_type_checking_global_b)
567 warning (_ ("Doing assignment anyway."));
572 && ly_c_procedure_p (type)
573 && scm_call_1 (type, val) == SCM_BOOL_F)
575 SCM errport = scm_current_error_port ();
577 SCM typefunc = ly_scheme_function ("type-name");
578 SCM type_name = scm_call_1 (typefunc, type);
581 scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'",
582 ly_symbol2string (sym).to_str0 (),
584 ly_scm2string (type_name).to_str0 ()).to_str0 (),
586 scm_puts ("\n", errport);
595 zijn deze nou handig?
596 zijn ze er al in scheme, maar heten ze anders? */
599 /* Remove doubles from (sorted) list */
603 SCM unique = SCM_EOL;
604 for (SCM i = list; ly_c_pair_p (i); i = ly_cdr (i))
606 if (!ly_c_pair_p (ly_cdr (i))
607 || !ly_c_equal_p (ly_car (i), ly_cadr (i)))
608 unique = scm_cons (ly_car (i), unique);
610 return scm_reverse_x (unique, SCM_EOL);
615 scm_default_compare (void const *a, void const *b)
621 return pa < pb ? -1 : 1;
624 /* Modify LST in place: qsort it. */
626 ly_list_qsort_uniq_x (SCM lst)
628 int len = scm_ilength (lst);
629 SCM *arr = new SCM[len];
631 for (SCM s = lst; SCM_NNULLP (s); s = SCM_CDR (s))
632 arr[k++] = SCM_CAR (s);
635 qsort (arr, len, sizeof (SCM), &scm_default_compare);
638 for (int i = 0; i < len; i++)
639 if (!i || arr[i] != arr[i - 1])
641 SCM_SETCAR (*tail, arr[i]);
642 tail = SCM_CDRLOC (*tail);
654 ly_snoc (SCM s, SCM list)
656 return ly_append2 (list, scm_list_n (s, SCM_UNDEFINED));
659 /* Split list at member s, removing s.
660 Return (BEFORE . AFTER) */
662 ly_split_list (SCM s, SCM list)
664 SCM before = SCM_EOL;
666 for (; ly_c_pair_p (after);)
668 SCM i = ly_car (after);
669 after = ly_cdr (after);
670 if (ly_c_equal_p (i, s))
672 before = scm_cons (i, before);
674 return scm_cons ( scm_reverse_x (before, SCM_EOL), after);
688 display stuff without using stack
693 SCM p = scm_current_output_port ();
696 for (; ly_c_pair_p (s); s =ly_cdr (s))
698 scm_display (ly_car (s), p);
702 return SCM_UNSPECIFIED;
706 int_list_to_slice (SCM l)
710 for (; ly_c_pair_p (l); l = ly_cdr (l))
711 if (ly_c_number_p (ly_car (l)))
712 s.add_point (ly_scm2int (ly_car (l)));
716 /* Return I-th element, or last elt L. If I < 0, then we take the first
719 PRE: length (L) > 0 */
721 robust_list_ref (int i, SCM l)
723 while (i-- > 0 && ly_c_pair_p (ly_cdr (l)))
729 robust_scm2double (SCM k, double x)
731 if (ly_c_number_p (k))
732 x = ly_scm2double (k);
737 robust_scm2interval (SCM k, Drul_array<Real> v)
742 if (is_number_pair (k))
743 i = ly_scm2interval (k);
748 robust_scm2drul (SCM k, Drul_array<Real> v)
750 if (is_number_pair (k))
751 v = ly_scm2interval (k);
756 robust_scm2offset (SCM k, Offset o)
758 if (is_number_pair (k))
759 o = ly_scm2offset (k);
764 robust_scm2int (SCM k, int o)
766 if (scm_integer_p (k) == SCM_BOOL_T)
772 alist_to_hashq (SCM alist)
774 int i = scm_ilength (alist);
776 return scm_c_make_hash_table (0);
778 SCM tab = scm_c_make_hash_table (i);
779 for (SCM s = alist; ly_c_pair_p (s); s = ly_cdr (s))
781 SCM pt = ly_cdar (s);
782 scm_hashq_set_x (tab, ly_caar (s), pt);
791 LY_DEFINE (ly_protects, "ly:protects",
793 "Return hash of protected objects.")
800 #if HAVE_PANGO_FC_FONT_MAP_ADD_DECODER_FIND_FUNC
802 #include "pangofc-afm-decoder.hh"
804 LY_DEFINE (ly_pango_add_afm_decoder, "ly:pango-add-afm-decoder",
805 1, 0, 0, (SCM font_family),
806 "Add pango afm decoder for FONT-FAMILY.")
808 SCM_ASSERT_TYPE (ly_c_string_p (font_family), font_family, SCM_ARG1, __FUNCTION__, "font_family");
809 pango_fc_afm_add_decoder (ly_scm2newstr (font_family, 0));
810 return SCM_UNSPECIFIED;