lily/midi-stream.cc

   1 /*
   2   midi-stream.cc -- implement Midi_stream
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2005 Jan Nieuwenhuizen <janneke@gnu.org>
   7 */
   8
   9 #include "midi-stream.hh"
  10
  11 #include <errno.h>
  12
  13 #include "stream.hh"
  14 #include "string-convert.hh"
  15 #include "main.hh"
  16 #include "misc.hh"
  17 #include "midi-item.hh"
  18 #include "warn.hh"
  19 #include "program-option.hh"
  20
  21 Midi_stream::Midi_stream (String file_name)
  22 {
  23   file_name_string_ = file_name;
  24   out_file_ = fopen (file_name.to_str0 (), "wb");
  25   if (!out_file_)
  26     error (_f ("can't open for write: %s: %s", file_name, strerror (errno)));
  27 }
  28
  29 Midi_stream::~Midi_stream ()
  30 {
  31   fclose (out_file_);
  32 }
  33
  34 Midi_stream &
  35 Midi_stream::operator << (String str)
  36 {
  37   size_t sz = sizeof (Byte);
  38   size_t n = str.length ();
  39   size_t written = fwrite (str.get_bytes (),
  40                            sz, n, out_file_);
  41
  42   if (written != sz * n)
  43     warning (_ ("can't write to file: `%s'"));
  44
  45   return *this;
  46 }
  47
  48 Midi_stream &
  49 Midi_stream::operator << (Midi_item const &midi_c_r)
  50 {
  51   String str = midi_c_r.to_string ();
  52
  53   // ugh, should have separate debugging output with Midi*::print routines
  54   if (do_midi_debugging_global)
  55     {
  56       str = String_convert::bin2hex (str) + "\n";
  57       for (int i = str.index ("0a"); i >= 0; i = str.index ("0a"))
  58         {
  59           str[i] = '\n';
  60           str[i + 1] = '\t';
  61         }
  62     }
  63
  64   return operator << (str);
  65 }
  66
  67 Midi_stream&
  68 Midi_stream::operator << (int i)
  69 {
  70   // output binary string ourselves
  71   *this << Midi_item::i2varint_string (i);
  72   return *this;
  73 }
  74