\break export to MusicXML

ly/musicxml/create_musicxml.py

@@ -528,6 +528,9 @@ def add_clef(self, sign, line, nr=0, oct_ch=0):
             octchnode = etree.SubElement(clefnode, "clef-octave-change")
             octchnode.text = str(oct_ch)
 
+    def new_system(self, force_break):
+        etree.SubElement(self.current_bar, "print", {'new-system':force_break})
+
     def add_barline(self, bl_type, repeat=None):
         barnode = etree.SubElement(self.current_bar, "barline", location="right")
         barstyle = etree.SubElement(barnode, "bar-style")

ly/musicxml/ly2xml_mediator.py

@@ -867,6 +867,10 @@ def check_divs(self):
             mult = get_mult(a, b)
             self.divisions = divs*mult
 
+    def add_break(self):
+        if self.bar is None:
+            self.new_bar()
+        self.current_attr.add_break('yes')
 
 
 ##

ly/musicxml/lymus2musxml.py

@@ -497,6 +497,8 @@ def Command(self, command):
             if self.tupl_span:
                 self.mediator.unset_tuplspan_dur()
                 self.tupl_span = False
+        elif command.token == '\\break':
+            self.mediator.add_break()
         else:
             if command.token not in excls:
                 print("Unknown command:", command.token)

ly/musicxml/xml_objs.py

@@ -122,6 +122,8 @@ def new_xml_bar_attr(self, obj):
         """Create bar attribute xml-nodes."""
         if obj.has_attr():
             self.musxml.new_bar_attr(obj.clef, obj.time, obj.key, obj.mode, obj.divs)
+        if obj.new_system:
+            self.musxml.new_system(obj.new_system)
         if obj.repeat:
             self.musxml.add_barline(obj.barline, obj.repeat)
         elif obj.barline:
@@ -726,10 +728,14 @@ def __init__(self):
         self.staves = 0
         self.multiclef = []
         self.tempo = None
+        self.new_system = None
 
     def __repr__(self):
         return '<{0} {1}>'.format(self.__class__.__name__, self.time)
 
+    def add_break(self, force_break):
+        self.new_system = force_break
+
     def set_key(self, muskey, mode):
         self.key = muskey
         self.mode = mode

tests/test_xml.py

@@ -30,6 +30,8 @@ def test_dynamics():
 def test_tuplet():
     compare_output('tuplet')
 
+def test_break():
+    compare_output('break')
 
 def ly_to_xml(filename):
     """Read Lilypond file and return XML string."""

tests/test_xml_files/break.ly

@@ -0,0 +1,4 @@
+\relative c'' {
+  c4 c c c | \break
+  c4 c c c |
+}

tests/test_xml_files/break.xml

@@ -0,0 +1,106 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 2.0 Partwise//EN"
+                                "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="3.0">
+  <identification>
+    <encoding>
+      <software>python-ly 0.9.5</software>
+      <encoding-date>2017-05-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name />
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>1</divisions>
+        <time symbol="common">
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+      </note>
+    </measure>
+    <measure number="3" />
+  </part>
+</score-partwise>