source file of the GNU LilyPond music typesetter
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2002 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+
#include <stdio.h>
+#include <stdlib.h>
+#include <math.h> /* isinf */
+#include <string.h> /* strdup, strchr */
#include "libc-extension.hh"
#include "lily-guile.hh"
#include "main.hh"
#include "simple-file-storage.hh"
#include "file-path.hh"
#include "debug.hh"
+#include "direction.hh"
+#include "offset.hh"
+#include "interval.hh"
+#include "pitch.hh"
+#include "dimensions.hh"
+
+#ifdef PARANOID
+#include <libguile/gc.h>
+#undef gh_pair_p
+bool
+ly_pair_p (SCM x)
+{
+#if 0
+ assert (!SCM_CONSP (x) || (*(scm_t_bits*) SCM2PTR (SCM_CAR (x))) != scm_tc_free_cell);
+ assert (!SCM_CONSP (x) || (*(scm_t_bits*) SCM2PTR (SCM_CDR (x))) != scm_tc_free_cell);
+#elif GUILE_MINOR_VERSION < 5
+ assert (!SCM_CONSP (x) || !SCM_FREEP (SCM_CAR (x)));
+ assert (!SCM_CONSP (x) || !SCM_FREEP (SCM_CDR (x)));
+#else
+ assert (!SCM_CONSP (x) || !SCM_FREE_CELL_P (SCM_CAR (x)));
+ assert (!SCM_CONSP (x) || !SCM_FREE_CELL_P (SCM_CDR (x)));
+#endif
+ //return SCM_NFALSEP (scm_pair_p (x));
+ return gh_pair_p (x);
+}
+#define gh_pair_p ly_pair_p
+#endif
+
+SCM
+ly_last (SCM list)
+{
+ return ly_car (scm_last_pair (list));
+}
+
+SCM
+ly_str02scm (char const*c)
+{
+ // this all really sucks, guile should take char const* arguments!
+ return gh_str02scm ((char*)c);
+}
+
+
+SCM
+ly_write2scm (SCM s)
+{
+ SCM port = scm_mkstrport (SCM_INUM0,
+ scm_make_string (SCM_INUM0, SCM_UNDEFINED),
+ SCM_OPN | SCM_WRTNG,
+ "ly_write2string");
+ // SCM write = scm_eval_3 (ly_symbol2scm ("write"), s, SCM_EOL);
+ SCM write = scm_primitive_eval (ly_symbol2scm ("write"));
+
+ // scm_apply (write, port, SCM_EOL);
+ gh_call2 (write, s, port);
+ return scm_strport_to_string (port);
+}
/*
- scm_m_quote doesn't use any env, but needs one for a good signature in GUILE.
+ Pass string to scm parser, evaluate one expression.
+ Return result value and #chars read.
- Why there is no gh_quote () in GUILE beats me.
+ Thanks to Gary Houston <ghouston@freewire.co.uk>
+
+ Need guile-1.3.4 (>1.3 anyway) for ftell on str ports -- jcn
*/
+SCM
+ly_parse_scm (char const* s, int* n)
+{
+ SCM str = ly_str02scm (s);
+ SCM port = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_RDNG,
+ "ly_eval_scm_0str");
+ SCM from = scm_ftell (port);
+
+ SCM form;
+ SCM answer = SCM_UNSPECIFIED;
+
+ /* Read expression from port */
+ if (!SCM_EOF_OBJECT_P (form = scm_read (port)))
+ answer = scm_primitive_eval (form);
+
+ /*
+ After parsing
+
+ (begin (foo 1 2))
+
+ all seems fine, but after parsing
+
+ (foo 1 2)
+
+ read_buf has been advanced to read_pos - 1,
+ so that scm_ftell returns 1, instead of #parsed chars
+ */
+
+ /*
+ urg: reset read_buf for scm_ftell
+ shouldn't scm_read () do this for us?
+ */
+ scm_fill_input (port);
+ SCM to = scm_ftell (port);
+ *n = gh_scm2int (to) - gh_scm2int (from);
+
+ /* Don't close the port here; if we re-enter this function via a
+ continuation, then the next time we enter it, we'll get an error.
+ It's a string port anyway, so there's no advantage to closing it
+ early.
+
+ scm_close_port (port);
+ */
+
+ return answer;
+}
SCM
ly_quote_scm (SCM s)
{
- return scm_cons2 (scm_i_quote, s, SCM_EOL);
+ return scm_list_n (ly_symbol2scm ("quote"), s, SCM_UNDEFINED);
}
-/*
- See: libguile/symbols.c
- SCM
- scm_string_to_symbol(s)
-
+
+String
+ly_symbol2string (SCM s)
+{
+ assert (gh_symbol_p (s));
+ return String ((Byte*)SCM_STRING_CHARS (s), (int) SCM_STRING_LENGTH (s));
+}
+
+
+String
+gulp_file_to_string (String fn)
+{
+ String s = global_path.find (fn);
+ if (s == "")
+ {
+ String e = _f ("can't find file: `%s'", fn);
+ e += " ";
+ e += _f ("(load path: `%s')", global_path.str ());
+ error (e);
+ }
+ else if (verbose_global_b)
+ progress_indication ("[" + s);
+
+
+ Simple_file_storage f (s);
+ String result (f.ch_C ());
+ if (verbose_global_b)
+ progress_indication ("]");
+ return result;
+}
+
+LY_DEFINE(ly_gulp_file, "ly-gulp-file", 1,0, 0,
+ (SCM name),
+ "Read the file named @var{name}, and return its contents in a string. The
+file is looked up using the lilypond search path.
+
+")
+{
+ return ly_str02scm (gulp_file_to_string (ly_scm2string (name)).ch_C ());
+}
+
+
+/**
+ Read a file, and shove it down GUILE. GUILE also has file read
+ functions, but you can't fiddle with the path of those.
+
+
+ TODO: JUNKME.
*/
+void
+read_lily_scm_file (String fn)
+{
+ gh_eval_str ((char *) gulp_file_to_string (fn).ch_C ());
+}
+
+extern "C" {
+ // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
+void
+ly_display_scm (SCM s)
+{
+ gh_display (s);
+ gh_newline ();
+}
+};
+
+String
+ly_scm2string (SCM s)
+{
+ assert (gh_string_p (s));
+
+ size_t len;
+ char *p = gh_scm2newstr (s , &len);
+
+ String r (p);
+
+ free (p);
+ return r;
+}
+
SCM
-ly_symbol (String name)
+index_cell (SCM s, Direction d)
{
- return gh_car (scm_intern (name.ch_C(), name.length_i()));
+ assert (d);
+ return (d == LEFT) ? ly_car (s) : ly_cdr (s);
}
SCM
-ly_set_scm (String name , SCM val)
+index_set_cell (SCM s, Direction d, SCM v)
{
- return scm_sysintern (name.ch_C(), val);
+ if (d == LEFT)
+ gh_set_car_x (s, v);
+ else if (d == RIGHT)
+ gh_set_cdr_x (s, v);
+ return s;
+}
+LY_DEFINE(ly_warning,"ly-warn", 1, 0, 0,
+ (SCM str),"Scheme callable function to issue the warning @code{msg}.
+")
+{
+ assert (gh_string_p (str));
+ warning ("lily-guile: " + ly_scm2string (str));
+ return SCM_BOOL_T;
}
-/**
- Read a file, and shove it down GUILE. GUILE also has file read
- functions, but you can't fiddle with the path of those.
-
+LY_DEFINE(ly_isdir_p, "dir?", 1,0, 0, (SCM s),
+ "type predicate. A direction is a -1, 0 or 1, where -1 represents left or
+down and 1 represents right or up.
+")
+{
+ if (gh_number_p (s))
+ {
+ int i = gh_scm2int (s);
+ return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
+ }
+ return SCM_BOOL_F;
+}
+
+bool
+ly_number_pair_p (SCM p)
+{
+ return gh_pair_p (p) && gh_number_p (ly_car (p)) && gh_number_p (ly_cdr (p));
+}
+
+typedef void (*Void_fptr) ();
+Array<Void_fptr> *scm_init_funcs_;
+
+void add_scm_init_func (void (*f) ())
+{
+ if (!scm_init_funcs_)
+ scm_init_funcs_ = new Array<Void_fptr>;
+
+ scm_init_funcs_->push (f);
+}
+
+extern void init_cxx_function_smobs ();
+
+void
+prepend_load_path (String p )
+{
+ char s[1024];
+ sprintf (s,
+ "(set! %%load-path (cons \"%s\" %%load-path))", p.ch_C());
+
+ scm_c_eval_string (s);
+}
+
+void
+init_lily_guile (String p )
+{
+ prepend_load_path (p);
+
+ // todo: junk this. We should make real modules iso. just loading files.
+ prepend_load_path (p + "/scm/");
+
+ SCM last_mod = scm_current_module ();
+ scm_set_current_module (scm_c_resolve_module ("guile"));
+
+ init_cxx_function_smobs ();
+ for (int i=scm_init_funcs_->size () ; i--;)
+ (scm_init_funcs_->elem (i)) ();
+
+ if (verbose_global_b)
+ progress_indication ("\n");
+ read_lily_scm_file ("lily.scm");
+
+ scm_set_current_module (last_mod);
+}
+
+unsigned int ly_scm_hash (SCM s)
+{
+ return scm_ihashv (s, ~1u);
+}
+
+
+
+bool
+ly_dir_p (SCM s)
+{
+ if (gh_number_p (s))
+ {
+ int i = gh_scm2int (s);
+ return i>= -1 && i <= 1;
+ }
+ return false;
+}
+
+
+bool
+ly_axis_p (SCM s)
+{
+ if (gh_number_p (s))
+ {
+ int i = gh_scm2int (s);
+ return i== 0 || i == 1;
+ }
+ return false;
+}
+
+
+Direction
+to_dir (SCM s)
+{
+ return (Direction) gh_scm2int (s);
+}
+
+Interval
+ly_scm2interval (SCM p)
+{
+ return Interval (gh_scm2double (ly_car (p)),
+ gh_scm2double (ly_cdr (p)));
+}
+
+SCM
+ly_interval2scm (Drul_array<Real> i)
+{
+ return gh_cons (gh_double2scm (i[LEFT]),
+ gh_double2scm (i[RIGHT]));
+}
+
+
+
+
+bool
+to_boolean (SCM s)
+{
+ return gh_boolean_p (s) && gh_scm2bool (s);
+}
+
+/*
+ Appendable list L: the cdr contains the list, the car the last cons
+ in the list.
*/
+SCM
+appendable_list ()
+{
+ SCM s = gh_cons (SCM_EOL, SCM_EOL);
+ gh_set_car_x (s, s);
+
+ return s;
+}
+
void
-read_lily_scm_file (String fn)
+appendable_list_append (SCM l, SCM elt)
{
- String s = global_path.find (fn);
- if (s == "")
+ SCM newcons = gh_cons (elt, SCM_EOL);
+
+ gh_set_cdr_x (ly_car (l), newcons);
+ gh_set_car_x (l, newcons);
+}
+
+
+SCM
+ly_offset2scm (Offset o)
+{
+ return gh_cons (gh_double2scm (o[X_AXIS]), gh_double2scm (o[Y_AXIS]));
+}
+
+Offset
+ly_scm2offset (SCM s)
+{
+ return Offset (gh_scm2double (ly_car (s)),
+ gh_scm2double (ly_cdr (s)));
+}
+
+SCM
+ly_type (SCM exp)
+{
+ char const * cp = "unknown";
+ if (gh_number_p (exp))
{
- String e = _f ("Can not find file `%s\'", fn);
- e += " ";
- e += _f ("(Load path is `%s\'", global_path.str ());
- error (e);
+ cp = "number";
+ }
+ else if (gh_string_p (exp))
+ {
+ cp = "string";
+ }
+ else if (gh_procedure_p (exp))
+ {
+ cp = "procedure";
+ }
+ else if (gh_boolean_p (exp))
+ {
+ cp = "boolean";
+ }
+ else if (gh_pair_p (exp))
+ {
+ cp = "list";
+ }
+
+ return ly_str02scm (cp);
+}
+
+/*
+ convert without too many decimals, and leave a space at the end.
+ */
+
+
+LY_DEFINE(ly_number2string, "ly-number->string", 1, 0,0,
+ (SCM s),
+ " converts @var{num} to a string without generating many decimals. It
+leaves a space at the end.
+")
+{
+ assert (gh_number_p (s));
+
+ char str[400]; // ugh.
+
+ if (scm_exact_p (s) == SCM_BOOL_F)
+ {
+ Real r (gh_scm2double (s));
+
+ if (isinf (r) || isnan (r))
+ {
+ programming_error ("Infinity or NaN encountered while converting Real number; setting to zero.");
+ r = 0.0;
+ }
+
+ sprintf (str, "%8.4f ", r);
+ }
+ else
+ {
+ sprintf (str, "%d ", gh_scm2int (s));
+ }
+
+ return ly_str02scm (str);
+}
+
+/*
+ Undef this to see if GUILE GC is causing too many swaps.
+ */
+
+// #define TEST_GC
+
+#ifdef TEST_GC
+#include <libguile/gc.h>
+
+static void *
+greet_sweep (void *dummy1, void *dummy2, void *dummy3)
+{
+ fprintf (stderr, "entering sweep\n");
+}
+
+static void *
+wave_sweep_goodbye (void *dummy1, void *dummy2, void *dummy3)
+{
+ fprintf (stderr, "leaving sweep\n");
+}
+#endif
+
+
+#include "version.hh"
+LY_DEFINE(ly_version, "ly-version", 0, 0, 0, (),
+ "Return the current lilypond version as a list, e.g.
+@code{(1 3 127 uu1)}.
+")
+{
+ char const* vs = "\' (" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")" ;
+
+ return gh_eval_str ((char*)vs);
+}
+
+LY_DEFINE(ly_unit, "ly-unit", 0, 0, 0, (),
+ "Return the unit used for lengths as a string.")
+{
+ return ly_str02scm (INTERNAL_UNIT);
+}
+
+LY_DEFINE(ly_verbose, "ly-verbose", 0, 0, 0, (),
+ "Return whether lilypond is being run in verbose mode.")
+{
+ return gh_bool2scm (verbose_global_b);
+}
+
+static void
+init_functions ()
+{
+#ifdef TEST_GC
+ scm_c_hook_add (&scm_before_mark_c_hook, greet_sweep, 0, 0);
+ scm_c_hook_add (&scm_before_sweep_c_hook, wave_sweep_goodbye, 0, 0);
+#endif
+}
+
+ADD_SCM_INIT_FUNC (funcs, init_functions);
+
+SCM
+ly_deep_copy (SCM l)
+{
+ if (gh_pair_p (l))
+ {
+ return gh_cons (ly_deep_copy (ly_car (l)), ly_deep_copy (ly_cdr (l)));
+ }
+ else
+ return l;
+}
+
+
+
+
+SCM
+ly_assoc_chain (SCM key, SCM achain)
+{
+ if (gh_pair_p (achain))
+ {
+ SCM handle = scm_assoc (key, ly_car (achain));
+ if (gh_pair_p (handle))
+ return handle;
+ else
+ return ly_assoc_chain (key, ly_cdr (achain));
+ }
+ else
+ return SCM_BOOL_F;
+}
+
+/* looks the key up in the cdrs of the alist-keys
+ - ignoring the car and ignoring non-pair keys.
+ Returns first match found, i.e.
+
+ alist = ((1 . 10)
+ ((1 . 2) . 11)
+ ((2 . 1) . 12)
+ ((3 . 0) . 13)
+ ((4 . 1) . 14) )
+
+I would like (ly_assoc_cdr 1) to return 12 - because it's the first
+element with the cdr of the key = 1. In other words (alloc_cdr key)
+corresponds to call
+
+(alloc (anything . key))
+
+
+
+*/
+SCM
+ly_assoc_cdr (SCM key, SCM alist)
+{
+ if (gh_pair_p (alist)) {
+ SCM trykey = ly_caar(alist);
+ if(gh_pair_p(trykey) && to_boolean(scm_equal_p(key,ly_cdr(trykey))))
+ return ly_car(alist);
+ else
+ return ly_assoc_cdr (key, ly_cdr (alist));
+ }
+ else
+ return SCM_BOOL_F;
+}
+
+/*
+ LIST has the form "sym1 sym2 sym3\nsym4\nsym5"
+
+ i.e. \n and ' ' can be used interchangeably as separators.
+ */
+SCM
+parse_symbol_list (const char * list)
+{
+ char * s = strdup (list);
+ char *orig = s;
+ SCM create_list = SCM_EOL;
+
+ for (char * p = s; *p; p++)
+ {
+ if (*p == '\n')
+ *p = ' ' ;
+ }
+
+ if (!s[0] )
+ s = 0;
+
+
+
+ while (s)
+ {
+ char *next = strchr (s, ' ');
+ if (next)
+ *next++ = 0;
+
+ create_list = gh_cons (ly_symbol2scm (s), create_list);
+ s = next;
+ }
+
+ free (orig);
+ return create_list;
+}
+
+
+SCM
+ly_truncate_list (int k, SCM l )
+{
+ if (k == 0)
+ {
+ l = SCM_EOL;
}
else
- *mlog << '[' << s;
+ {
+ SCM s = l;
+ k--;
+ for (; gh_pair_p (s) && k--; s = ly_cdr (s))
+ ;
+ if (gh_pair_p (s))
+ {
+ gh_set_cdr_x (s, SCM_EOL);
+ }
+ }
+ return l;
+}
- Simple_file_storage f(s);
+SCM my_gh_symbol2scm (const char* x)
+{
+ return gh_symbol2scm ((char*)x);
+}
+
+String
+print_scm_val (SCM val)
+{
+ String realval = ly_scm2string (ly_write2scm (val));
+ if (realval.length_i () > 200)
+ realval = realval.left_str (100) + "\n :\n :\n" + realval.right_str (100);
+
+ return realval;
+}
+
+bool
+type_check_assignment (SCM sym, SCM val, SCM type_symbol)
+{
+ bool ok = true;
+
+ /*
+ Always succeeds.
+
+
+ TODO: should remove #f from allowed vals?
+ */
+ if (val == SCM_EOL || val == SCM_BOOL_F)
+ return ok;
+
+
+ SCM type_p = SCM_EOL;
+
+ if (gh_symbol_p (sym))
+ type_p = scm_object_property (sym, type_symbol);
+
+ if (type_p != SCM_EOL && !gh_procedure_p (type_p))
+ {
+ warning (_f ("Can't find property type-check for `%s' (%s). Perhaps you made a typing error? Doing assignment anyway.",
+ ly_symbol2string (sym).ch_C (),
+ ly_symbol2string (type_symbol).ch_C ()
+
+ ));
+ }
+ else
+ {
+ if (val != SCM_EOL
+ && gh_procedure_p (type_p)
+ && gh_call1 (type_p, val) == SCM_BOOL_F)
+ {
+ SCM errport = scm_current_error_port ();
+ ok = false;
+ SCM typefunc = scm_primitive_eval (ly_symbol2scm ("type-name"));
+ SCM type_name = gh_call1 (typefunc, type_p);
+
+
+ scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'",
+ ly_symbol2string (sym).ch_C (),
+ print_scm_val (val),
+ ly_scm2string (type_name).ch_C ()).ch_C (),
+ errport);
+ scm_puts ("\n", errport);
+ }
+ }
+ return ok;
+}
+
+
+/* some SCM abbrevs
+
+ zijn deze nou handig?
+ zijn ze er al in scheme, maar heten ze anders? */
+
+
+/* Remove doubles from (sorted) list */
+SCM
+ly_unique (SCM list)
+{
+ SCM unique = SCM_EOL;
+ for (SCM i = list; gh_pair_p (i); i = ly_cdr (i))
+ {
+ if (!gh_pair_p (ly_cdr (i))
+ || !gh_equal_p (ly_car (i), ly_cadr (i)))
+ unique = gh_cons (ly_car (i), unique);
+ }
+ return scm_reverse_x (unique, SCM_EOL);
+}
+
+/* tail add */
+SCM
+ly_snoc (SCM s, SCM list)
+{
+ return gh_append2 (list, scm_list_n (s, SCM_UNDEFINED));
+}
+
+
+/* Split list at member s, removing s.
+ Return (BEFORE . AFTER) */
+SCM
+ly_split_list (SCM s, SCM list)
+{
+ SCM before = SCM_EOL;
+ SCM after = list;
+ for (; gh_pair_p (after);)
+ {
+ SCM i = ly_car (after);
+ after = ly_cdr (after);
+ if (gh_equal_p (i, s))
+ break;
+ before = gh_cons (i, before);
+ }
+ return gh_cons ( scm_reverse_x (before, SCM_EOL), after);
- gh_eval_str ((char *) f.ch_C());
- *mlog << ']' << flush;
}
projects / lilypond.git / blobdiff