* lily/grob.cc: remove X-extent-callback / Y-extent-callback.

[lilypond.git] / lily / book-scheme.cc

diff --git a/lily/book-scheme.cc b/lily/book-scheme.cc
index 5c86770e3f69648ccd88af4be95b2e3012f74122..c6fb9a4ffa4c1de992a1f06f402e27843af75b50 100644 (file)
--- a/lily/book-scheme.cc
+++ b/lily/book-scheme.cc
@@ -7,8 +7,10 @@
 */
 
 #include "book.hh"
+
 #include "output-def.hh"
 #include "score.hh"
+#include "paper-book.hh"
 #include "ly-module.hh"
 
 LY_DEFINE (ly_make_book, "ly:make-book",
@@ -23,12 +25,42 @@ LY_DEFINE (ly_make_book, "ly:make-book",
   Book *book = new Book;
   book->paper_ = odef;
 
-  if (ly_c_module_p (header))
+  if (ly_is_module (header))
     book->header_ = header;
 
   book->scores_ = scm_append (scm_list_2 (scores, book->scores_));
 
   SCM x = book->self_scm ();
-  scm_gc_unprotect_object (x);
+  book->unprotect ();
   return x;
 }
+
+LY_DEFINE (ly_parser_print_book, "ly:book-process",
+          4, 0, 0, (SCM book_smob,
+                    SCM default_paper,
+                    SCM default_layout,
+                    SCM output),
+          "Print book. @var{output} is passed to the backend unchanged. "
+          "Eg. it may be "
+          "a string (for file based outputs) or a socket (for network based "
+          "output).")
+{
+  Book *book = unsmob_book (book_smob);
+
+  SCM_ASSERT_TYPE (book, book_smob, SCM_ARG1, __FUNCTION__, "Book");
+  SCM_ASSERT_TYPE (unsmob_output_def (default_paper),
+                  default_layout, SCM_ARG2, __FUNCTION__, "\\paper block");
+  SCM_ASSERT_TYPE (unsmob_output_def (default_layout),
+                  default_layout, SCM_ARG3, __FUNCTION__, "\\layout block");
+
+  Paper_book *pb = book->process (unsmob_output_def (default_paper),
+                                 unsmob_output_def (default_layout));
+  if (pb)
+    {
+      pb->output (output);
+      pb->unprotect ();
+    }
+
+  return SCM_UNSPECIFIED;
+}
+