//
// Programmer:    Craig Stuart Sapp <craig@ccrma.stanford.edu>
// Creation Date: Mon Dec 18 03:41:53 PST 2006 
// Last Modified: Mon Dec 18 03:42:01 PST 2006
// Filename:      ...sig/examples/all/onsetbeats.cpp
// Web Address:   http://sig.sapp.org/examples/museinfo/humdrum/onsetbeats.cpp
// Syntax:        C++; museinfo
//
// Description:   Identifies absolute beat location of note onset
//		  events in the score (or lack thereof).
//

#include "humdrum.h"


// function declarations
void      checkOptions       (Options& opts, int argc, char* argv[]);
void      example            (void);
void      usage              (const char* command);
int       isOnset            (HumdrumFile& infile, int line);
void      printOutput        (HumdrumFile& file);

// global variables
Options   options;             // database for command-line arguments
int       appendQ  = 0;        // used with -a option
int       prependQ = 0;        // used with -p option
int       beatsQ   = 0;        // only check the main beat locations
int       zero     = 0;        // offset control
int       invertQ  = 0;        // not yet implemented


///////////////////////////////////////////////////////////////////////////

int main(int argc, char* argv[]) {
   HumdrumFile infile, outfile;

   // process the command-line options
   checkOptions(options, argc, argv);

   // figure out the number of input files to process
   int numinputs = options.getArgCount();

   for (int i=0; i<numinputs || i==0; i++) {
      infile.clear();
      outfile.clear();

      // if no command-line arguments read data file from standard input
      if (numinputs < 1) {
         infile.read(cin);
      } else {
         infile.read(options.getArg(i+1));
      }
      // analyze the input file according to command-line options
      infile.analyzeRhythm();

      printOutput(infile);
   }

   return 0;
}


///////////////////////////////////////////////////////////////////////////


//////////////////////////////
//
// printOutput --
//

void printOutput(HumdrumFile& file) {
   // int lastmeasureline = -1;
   double absbeatval;
   int foundOnset;

   for (int i=0; i<file.getNumLines(); i++) {
      switch (file[i].getType()) {
         case E_humrec_data_comment:
            if (appendQ) {
               cout << file[i] << "\t" << "!" << "\n";
            }  else if (prependQ) {
               cout << "!\t" << file[i] << "\n";
            } else {
               cout << file[i] << "\n";
            }
            break;

         case E_humrec_data_kern_measure:
            if (prependQ) {
               cout << file[i][0] << "\t";
               cout << file[i] << "\n";
            } else if (appendQ) {
               cout << file[i] << "\t";
               cout << file[i][0] << "\n";
            } else {
               cout << file[i][0] << "\n";
            }
            // lastmeasureline = i;
            break;

         case E_humrec_interpretation:
            if (appendQ) {
               cout << file[i] << "\t";
            } 

            if (strncmp(file[i][0], "**", 2) == 0) {
               cout << "**absbeat";
	       if (!(appendQ || prependQ)) {
                  cout << "\n";
               }
            } else if (strcmp(file[i][0], "*-") == 0) {
               cout << "*-";
            } else {
               if (appendQ || prependQ) {
                  cout << "*";
               }
            }

            if (prependQ) {
               cout << "\t" << file[i];
            }

	    if (appendQ || prependQ) {
               cout << "\n";
	    }

            break;

         case E_humrec_data:
            if (appendQ) {
               cout << file[i] << "\t";
            } 

            absbeatval = file[i].getAbsBeat();
            foundOnset = isOnset(file, i);
            if (invertQ) {
               foundOnset = !foundOnset;
            }
            if (foundOnset) {
               if (beatsQ) {
                  if ((absbeatval+0.005) - (int)absbeatval < 0.01) {
                     cout << absbeatval;
                  } else {
                     cout << ".";
                  }
               } else {
                  cout << absbeatval;
               }
            } else {
               cout << ".";
            }

            if (prependQ) {
               cout << "\t" << file[i];
            }

            cout << "\n";

            break;
         case E_humrec_none:
         case E_humrec_empty:
         case E_humrec_global_comment:
         case E_humrec_bibliography:
         default:
            cout << file[i] << "\n";
            break;
      }
   }

}



//////////////////////////////
//
// isOnset -- returns true of there is a note on the current line
//    which is starting to play.
//

int isOnset(HumdrumFile& infile, int line) {
   int i;
   int k;
   char buffer[1024] = {0};
   int count;
   for (i=0; i<infile[line].getFieldCount(); i++) {
      if (strcmp(infile[line].getExInterp(i), "**kern") != 0) {
         continue;
      }
      if (strcmp(infile[line][i], ".") == 0) {
         continue;
      }
      count = infile[line].getTokenCount(i);
      for (k=0; k<count; k++) {
         infile[line].getToken(buffer, i, k);   
         if (strchr(buffer, ']') != NULL) {   // igmore tie endings
            continue;
         }
         if (strchr(buffer, '_') != NULL) {   // ignore tie continuations
            continue;
         }
         if (strcmp(buffer, ".") == 0) {  // igmore null tokens
            continue;
         }
         if (strchr(buffer, 'r') != NULL) {  // ignore rests
            continue;
         }

         if (strchr(buffer, 'A') != NULL) { return 1; }
         if (strchr(buffer, 'B') != NULL) { return 1; }
         if (strchr(buffer, 'C') != NULL) { return 1; }
         if (strchr(buffer, 'D') != NULL) { return 1; }
         if (strchr(buffer, 'E') != NULL) { return 1; }
         if (strchr(buffer, 'F') != NULL) { return 1; }
         if (strchr(buffer, 'G') != NULL) { return 1; }
         if (strchr(buffer, 'a') != NULL) { return 1; }
         if (strchr(buffer, 'b') != NULL) { return 1; }
         if (strchr(buffer, 'c') != NULL) { return 1; }
         if (strchr(buffer, 'd') != NULL) { return 1; }
         if (strchr(buffer, 'e') != NULL) { return 1; }
         if (strchr(buffer, 'f') != NULL) { return 1; }
         if (strchr(buffer, 'g') != NULL) { return 1; }
      }
      
   }

   return 0;
}



//////////////////////////////
//
// checkOptions -- validate and process command-line options.
//

void checkOptions(Options& opts, int argc, char* argv[]) {
   opts.define("a|append=b");           // append analysis to input
   opts.define("p|prepend=b");          // prepend analysis to input
   opts.define("b|beats=b");            // only check beat locations
   opts.define("z|zero|zero-offset=b"); // first beat is represented by a 0
   opts.define("debug=b");              // determine bad input line num
   opts.define("author=b");             // author of program
   opts.define("version=b");            // compilation info
   opts.define("example=b");            // example usages
   opts.define("h|help=b");             // short description
   opts.process(argc, argv);
   
   // handle basic options:
   if (opts.getBoolean("author")) {
      cout << "Written by Craig Stuart Sapp, "
           << "craig@ccrma.stanford.edu, Dec 2006" << endl;
      exit(0);
   } else if (opts.getBoolean("version")) {
      cout << argv[0] << ", version: 18 Dec 2006" << endl;
      cout << "compiled: " << __DATE__ << endl;
      cout << MUSEINFO_VERSION << endl;
      exit(0);
   } else if (opts.getBoolean("help")) {
      usage(opts.getCommand().c_str());
      exit(0);
   } else if (opts.getBoolean("example")) {
      example();
      exit(0);
   }

   zero = 0;
   appendQ  = opts.getBoolean("append");
   prependQ = opts.getBoolean("prepend");
   beatsQ   = opts.getBoolean("beats");
}
  


//////////////////////////////
//
// example -- example usage of the quality program
//

void example(void) {
   cout <<
   "                                                                         \n"
   "# example usage of the meter program.                                    \n"
   "# analyze a Bach chorale for meter position:                             \n"
   "     meter chor217.krn                                                   \n"
   "                                                                         \n"
   "# display the metrical location spine with original data:                \n"
   "     meter -a chor217.krn                                                \n"
   "                                                                         \n"
   << endl;
}



//////////////////////////////
//
// usage -- gives the usage statement for the meter program
//

void usage(const char* command) {
   cout <<
   "                                                                         \n"
   "Analyzes **kern data and generates a rhythmic analysis which gives       \n"
   "the beat location of **kern data records in the measure.  Currently,     \n"
   "input spines cannot split or join.                                       \n"
   "                                                                         \n"
   "Usage: " << command << " [-a][-b base-rhythm][-s|-d][input1 [input2 ...]]\n"
   "                                                                         \n"
   "Options:                                                                 \n"
   "   -a = assemble the analysis spine with the input data.                 \n"
   "   -b = set the base rhythm for analysis to specified kern rhythm value. \n"
   "   -d = gives the duration of each kern record in beat measurements.     \n"
   "   -s = sum the beat count in each measure.                              \n"
   "   --options = list of all options, aliases and default values           \n"
   "                                                                         \n"
   << endl;
}



// md5sum: b4d2ce1af511f9e76ffaeaafee08000c onsetbeats.cpp [20160320]