lily/book-scheme.cc

   1 /*
   2   book-scheme.cc -- implement Book bindings
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "book.hh"
  10
  11 #include "output-def.hh"
  12 #include "score.hh"
  13 #include "paper-book.hh"
  14 #include "ly-module.hh"
  15
  16 LY_DEFINE (ly_make_book, "ly:make-book",
  17            2, 0, 1, (SCM paper, SCM header, SCM scores),
  18            "Make a \\book of @var{paper} and @var{header} (which may be #f as well)  "
  19            "containing @code{\\scores}.")
  20 {
  21   Output_def *odef = unsmob_output_def (paper);
  22   SCM_ASSERT_TYPE (odef, paper,
  23                    SCM_ARG1, __FUNCTION__, "Output_def");
  24
  25   Book *book = new Book;
  26   book->paper_ = odef;
  27
  28   if (ly_is_module (header))
  29     book->header_ = header;
  30
  31   book->scores_ = scm_append (scm_list_2 (scores, book->scores_));
  32
  33   SCM x = book->self_scm ();
  34   book->unprotect ();
  35   return x;
  36 }
  37
  38 LY_DEFINE (ly_parser_print_book, "ly:book-process",
  39            4, 0, 0, (SCM book_smob,
  40                      SCM default_paper,
  41                      SCM default_layout,
  42                      SCM output),
  43            "Print book. @var{output} is passed to the backend unchanged. "
  44            "Eg. it may be "
  45            "a string (for file based outputs) or a socket (for network based "
  46            "output).")
  47 {
  48   Book *book = unsmob_book (book_smob);
  49
  50   SCM_ASSERT_TYPE (book, book_smob, SCM_ARG1, __FUNCTION__, "Book");
  51   SCM_ASSERT_TYPE (unsmob_output_def (default_paper),
  52                    default_layout, SCM_ARG2, __FUNCTION__, "\\paper block");
  53   SCM_ASSERT_TYPE (unsmob_output_def (default_layout),
  54                    default_layout, SCM_ARG3, __FUNCTION__, "\\layout block");
  55
  56   Paper_book *pb = book->process (unsmob_output_def (default_paper),
  57                                   unsmob_output_def (default_layout));
  58   if (pb)
  59     {
  60       pb->output (output);
  61       pb->unprotect ();
  62     }
  63
  64   return SCM_UNSPECIFIED;
  65 }
  66