1 files changed, 1 insertions, 0 deletions

diff --git a/lib/message.cc b/lib/message.cc
index 8f9e68a..6a5cfd6 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -1,247 +1,248 @@
 #include <algorithm>
 #include <iterator>
+#include <cassert>
 #include <midillo/message.h>
 #include <midillo/util.h>
 #include <midillo/exception.h>
 
 namespace midillo {
     using std::copy;
     using std::ostream_iterator;
 
     unsigned long message_t::calculate_save_size(int& rs) const {
         unsigned long rv = 0;
         if(status!=rs) {
             ++rv;
             rs = status;
         }else if((status&status_event_bits)==status_system) {
             rs = -1;
             ++rv; // XXX: is it really needed?
         }
         switch(status&status_event_bits) {
             case status_note_off:
             case status_note_on:
             case status_polyphonic_key_pressure: // aka status_aftertouch
             case status_control_change:
             case status_pitch_wheel_change:
                 rv += 2; break;
             case status_program_change:
             case status_channel_pressure:
                 ++rv; break;
             case status_system:
                 switch(status&status_system_bits) {
                     case status_system_sysex:
                     case status_system_end_of_sysex:
                         rv += data.size()+1; break;
                     case status_system_MTC_quarter_frame:
                     case status_system_song_select:
                         ++rv; break;
                     case status_system_song_position_pointer:
                         rv += 2; break;
                     case status_system_tune_request:
                     case status_system_timing_clock: // aka status_system_midi_clock
                     case status_system_midi_tick:
                     case status_system_start: // aka status_system_midi_start
                     case status_system_stop: // aka status_system_midi_stop
                     case status_system_continue: // aka status_system_midi_continue
                     case status_system_active_sense:
                         break; /* XXX: ensure there is no data? */
                     case status_system_meta: // also reset, but not for the purpose of midi file
                         ++rv;
                         rv += calcVLsize(data.size());
                         rv += data.size();
                         break;
                     default:
                         throw exception(CODEPOINT,"Internal error");
                         break;
                 }
                 break;
             default:
                 throw exception(CODEPOINT,"Internal error");
                 break;
         }
         return rv;
     }
 
     void message_t::save(int& rs,ostream& s) const {
         if(status!=rs) {
             s.put(status);
             if(!s.good())
                 throw exception_output_error(CODEPOINT,"Error writing midi status byte");
             rs = status;
         }else if((status&status_event_bits)==status_system) {
             rs = -1;
             s.put(status); // XXX: is it really needed?
             if(!s.good())
                 throw exception_output_error(CODEPOINT,"Error writing midi system status byte");
         }
         switch(status&status_event_bits) {
             case status_note_off:
             case status_note_on:
             case status_polyphonic_key_pressure: // aka status_aftertouch
             case status_control_change:
             case status_pitch_wheel_change:
                 save_data(s,2); break;
             case status_program_change:
             case status_channel_pressure:
                 save_data(s,1); break;
             case status_system:
                 switch(status&status_system_bits) {
                     case status_system_sysex:
                     case status_system_end_of_sysex:
                         save_sysex(s); break;
                     case status_system_MTC_quarter_frame:
                     case status_system_song_select:
                         save_data(s,1); break;
                     case status_system_song_position_pointer:
                         save_data(s,2); break;
                     case status_system_tune_request:
                     case status_system_timing_clock: // aka status_system_midi_clock
                     case status_system_midi_tick:
                     case status_system_start: // aka status_system_midi_start
                     case status_system_stop: // aka status_system_midi_stop
                     case status_system_continue: // aka status_system_midi_continue
                     case status_system_active_sense:
                         break; /* XXX: ensure there is no data? */
                     case status_system_meta: // also reset, but not for the purpose of midi file
                         s.put(meta_status&0xFF);
                         if(!s.good())
                             throw exception_output_error(CODEPOINT,"Error writing meta event");
                         writeVL(s,data.size());
                         save_data(s);
                         break;
                     default:
                         throw exception(CODEPOINT,"Internal error");
                         break;
                 }
                 break;
             default:
                 throw exception(CODEPOINT,"Internal error");
                 break;
         }
     }
 
     void message_t::load(int& rs,istream& s) {
         data.clear();
         status = s.get();
         if(!s.good())
             throw exception_input_error(CODEPOINT,"Error reading MIDI event status byte");
         if(status&status_bit) {
             if((status&status_event_bits)!=status_system)
                 rs = status;
         }else{
             if(rs<0)
                 throw exception_invalid_input(CODEPOINT,"Attempt to rely on the absent running status");
             data.push_back(status);
             status = rs;
         }
         switch(status&status_event_bits) {
             case status_note_off:
             case status_note_on:
             case status_polyphonic_key_pressure: // a.k.a. status_aftertouch
             case status_control_change:
             case status_pitch_wheel_change:
                 load_data(s,2); break;
             case status_program_change:
             case status_channel_pressure:
                 load_data(s,1); break;
             case status_system:
                 switch(status&status_system_bits) {
                     case status_system_sysex:
                     case status_system_end_of_sysex:
                         load_sysex(s); break;
                     case status_system_MTC_quarter_frame:
                     case status_system_song_select:
                         load_data(s,1); break;
                     case status_system_song_position_pointer:
                         load_data(s,2); break;
                     case status_system_tune_request:
                     case status_system_timing_clock: // a.k.a. status_system_midi_clock
                     case status_system_midi_tick:
                     case status_system_start: // a.k.a. status_system_midi_start
                     case status_system_stop: // a.k.a. status_system_midi_stop
                     case status_system_continue: // a.k.a. status_system_midi_continue
                     case status_system_active_sense:
                         break;
                     case status_system_meta: // also, reset, but not in midi files
                         {
                             meta_status = s.get();
                             if(!s.good())
                                 throw exception_input_error(CODEPOINT,"Error reading meta event type");
                             int l = readVL(s);
                             load_data(s,l);
                         }
                         break;
                     default:
                         throw exception(CODEPOINT,"Internal error");
                         break;
                 }
                 break;
             default:
                 throw exception(CODEPOINT,"Internal error");
                 break;
         }
     }
 
     void message_t::save_data(ostream& s,int c) const {
         if(c!=data.size())
             throw exception(CODEPOINT,"Writing corrupt data");
         save_data(s);
     }
 
     void message_t::save_data(ostream& s) const {
         for(bytes_t::const_iterator i=data.begin();i!=data.end();++i)
             s.put(*i);
         if(!s.good())
             throw exception_output_error(CODEPOINT,"Error writing MIDI message data");
     }
 
     void message_t::load_data(istream& s,int c) {
         c -= data.size();
         if(c<0)
             throw exception(CODEPOINT,"Internal error");
         while(c-- > 0) {
             data.push_back(s.get());
             if(!s.good())
                 throw exception_input_error(CODEPOINT,"Error reading MIDI data");
         }
     }
 
     void message_t::save_sysex(ostream& s) const {
         save_data(s);
         s.put(0xF7); /* XXX: Or is it better to put it into data? */
         if(!s.good())
             throw exception_output_error(CODEPOINT,"Error writing sysex data");
     }
 
     void message_t::load_sysex(istream& s) {
         int b = s.get();
         if(!s.good())
             throw exception_input_error(CODEPOINT,"Error reading sysex data");
         assert(!(b&0x80)); // manufacturer ought to be 7 bit. not sure if it belongs here, it may well be continuation.
         do {
             data.push_back(b);
             b = s.get();
             if(!s.good())
                 throw exception_input_error(CODEPOINT,"Error reading sysex data");
         }while(b!=0xF7);
     }
 
     void message_t::dump(ostream& s) const {
         std::ios::fmtflags ff = s.flags();
         int w = s.width(2);
         s.unsetf(std::ios::dec); s.setf(std::ios::hex);
         s << "status=" << status;
         if(is_meta()) {
             s << ", meta_status=" << meta_status;
         }
         if(!data.empty()) {
             s << ", data: ";
             copy(
                     data.begin(), data.end(),
                     ostream_iterator<int>(s," ") );
         }
         s.width(w);
         s.flags(ff);
     }
 
 }