scripts/auxiliar/musicxml_generate_timesignatures.py

   1 #!/usr/bin/env python
   2
   3 notes = "CDEFGAB"
   4 alterations = [-1, 0, 1]
   5
   6 dot_xml = """        <dot/>
   7 """
   8 tie_xml = """        <tie type="%s"/>
   9 """
  10 tie_notation_xml = """        <notations><tied type="%s"/></notations>
  11 """
  12
  13
  14 def generate_note (duration, end_tie = False):
  15     if duration < 2:
  16       (notetype, dur) = ("8th", 1)
  17     elif duration < 4:
  18       (notetype, dur) = ("quarter", 2)
  19     elif duration < 8:
  20       (notetype, dur) = ("half", 4)
  21     else:
  22       (notetype, dur) = ("whole", 8)
  23     dur_processed = dur
  24     dot = ""
  25     if (duration - dur_processed >= dur/2):
  26       dot = dot_xml
  27       dur_processed += dur/2
  28       if (duration - dur_processed >= max(dur/4, 1)):
  29         dot += dot_xml
  30         dur_processed += dur/4
  31     tie = ""
  32     tie_notation = ""
  33     if end_tie:
  34         tie += tie_xml % "stop"
  35         tie_notation += tie_notation_xml % "stop"
  36     second_note = None
  37     if duration - dur_processed > 0:
  38         second_note = generate_note (duration-dur_processed, True)
  39         tie += tie_xml % "start"
  40         tie_notation += tie_notation_xml % "start"
  41     note = """      <note>
  42         <pitch>
  43           <step>C</step>
  44           <octave>5</octave>
  45         </pitch>
  46         <duration>%s</duration>
  47 %s        <voice>1</voice>
  48         <type>%s</type>
  49 %s%s      </note>""" % (dur_processed, tie, notetype, dot, tie_notation)
  50     if second_note:
  51         return "%s\n%s" % (note, second_note)
  52     else:
  53         return note
  54
  55 def print_measure (nr, beats, type, params = "", attr = "", attr2 = "", barline = ""):
  56     duration = 8*beats/type
  57     note = generate_note (duration)
  58
  59     print """    <measure number="%s">
  60       <attributes>
  61 %s        <time%s>
  62           <beats>%s</beats>
  63           <beat-type>%s</beat-type>
  64         </time>
  65 %s      </attributes>
  66 %s
  67 %s    </measure>""" % (nr, attr, params, beats, type, attr2, note, barline)
  68
  69 first_key = """        <divisions>2</divisions>
  70         <key>
  71           <fifths>0</fifths>
  72           <mode>major</mode>
  73         </key>
  74 """
  75 first_clef = """        <clef>
  76           <sign>G</sign>
  77           <line>2</line>
  78         </clef>
  79 """
  80
  81 final_barline = """      <barline location="right">
  82         <bar-style>light-heavy</bar-style>
  83       </barline>
  84 """
  85
  86 print """<?xml version="1.0" encoding="UTF-8"?>
  87 <!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 1.0 Partwise//EN"
  88                                 "http://www.musicxml.org/dtds/partwise.dtd">
  89 <score-partwise>
  90   <identification>
  91     <miscellaneous>
  92       <miscellaneous-field name="description">Various time signatures: 2/2
  93             (alla breve), 4/4 (C), 2/2, 3/2, 2/4, 3/4, 4/4, 5/4, 3/8, 6/8,
  94             12/8</miscellaneous-field>
  95     </miscellaneous>
  96   </identification>
  97   <part-list>
  98     <score-part id="P1">
  99       <part-name>MusicXML Part</part-name>
 100     </score-part>
 101   </part-list>
 102   <!--=========================================================-->
 103   <part id="P1">"""
 104
 105 measure = 1
 106
 107 print_measure (measure, 2, 2, " symbol=\"common\"", first_key, first_clef)
 108 measure += 1
 109
 110 print_measure (measure, 4, 4, " symbol=\"common\"")
 111 measure += 1
 112
 113 print_measure (measure, 2, 2)
 114 measure += 1
 115
 116 print_measure (measure, 3, 2)
 117 measure += 1
 118
 119 print_measure (measure, 2, 4)
 120 measure += 1
 121
 122 print_measure (measure, 3, 4)
 123 measure += 1
 124
 125 print_measure (measure, 4, 4)
 126 measure += 1
 127
 128 print_measure (measure, 5, 4)
 129 measure += 1
 130
 131 print_measure (measure, 3, 8)
 132 measure += 1
 133
 134 print_measure (measure, 6, 8)
 135 measure += 1
 136
 137 print_measure (measure, 12, 8, "", "", "", final_barline)
 138 measure += 1
 139
 140 print """  </part>
 141 </score-partwise>"""