In this repository I am creating an export-infrastructure for LilyPond. The files presented here are far from production-ready, but at least the functions provided here can create humdrum and musicXML for very simple scores.
In this first proof of concept a file
\version "2.19.58"
\include "export-base.ly" % TODO package.ily!
\runTranslator
<<
\new Staff {
\time 3/4
\relative <<
{ c''4. a8 g4 | g bes <g b> | a c a | } \\
{ e8 f g fis e4 | es2 d4 | <c e>2 <c f>4 }
>>
}
\new Staff {
\time 3/4
\relative { c'2 c4 | c g' b, | a2. | }
}
>>
\FileExport #`((exporter . ,exportHumdrum))creates a humdrum file (.krn):
**kern **kern
*staff2 *staff1
* *^
=1 =1 =1
*M3/4 *M3/4 *M3/4
2c 4.cc 8eL
. . 8f
. . 8g
. 8a 8f#J
4c 4g 4e
=2 =2 =2
4c 4g 2e-
4g 4b- .
4B 4g b 4d
=3 =3 =3
2.A 4a 2c e
. 4cc .
. 4a 4c f
=4 =4 =4
*- *- *-
And with ,exportMusicXML it creates an XML-file:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
<score-partwise version="3.0">
<part-list>
<score-part id="P1">
<part-name>Part 1</part-name>
</score-part>
<score-part id="P2">
<part-name>Part 2</part-name>
</score-part>
</part-list>
<part id="P1">
<measure number="1">
<attributes>
<divisions>8</divisions>
<time><beats>3</beats><beat-type>4</beat-type></time>
</attributes>
<note>
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>4</duration>
<voice>2</voice>
<type>eighth</type>
<beam number="1">begin</beam>
</note>
<note>
<pitch>
<step>F</step>
<octave>4</octave>
</pitch>
<duration>4</duration>
<voice>2</voice>
<type>eighth</type>
<beam number="1">continue</beam>
</note>
<note>
<pitch>
<step>G</step>
<octave>4</octave>
</pitch>
<duration>4</duration>
<voice>2</voice>
<type>eighth</type>
<beam number="1">continue</beam>
</note>
<note>
<pitch>
<step>F</step>
<alter>1</alter>
<octave>4</octave>
</pitch>
<duration>4</duration>
<voice>2</voice>
<type>eighth</type>
<beam number="1">end</beam>
</note>
<note>
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>2</voice>
<type>quarter</type>
</note>
<backup><duration>24</duration></backup>
<note>
<pitch>
<step>C</step>
<octave>5</octave>
</pitch>
<duration>12</duration>
<voice>1</voice>
<type>quarter</type>
<dot/>
</note>
<note>
<pitch>
<step>A</step>
<octave>4</octave>
</pitch>
<duration>4</duration>
<voice>1</voice>
<type>eighth</type>
</note>
<note>
<pitch>
<step>G</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
</measure>
<measure number="2">
<attributes>
<divisions>8</divisions>
</attributes>
<note>
<pitch>
<step>E</step>
<alter>-1</alter>
<octave>4</octave>
</pitch>
<duration>16</duration>
<voice>2</voice>
<type>half</type>
</note>
<note>
<pitch>
<step>D</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>2</voice>
<type>quarter</type>
</note>
<backup><duration>24</duration></backup>
<note>
<pitch>
<step>G</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
<note>
<pitch>
<step>B</step>
<alter>-1</alter>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
<note>
<pitch>
<step>G</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
<note>
<chord />
<pitch>
<step>B</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
</measure>
<measure number="3">
<attributes>
<divisions>8</divisions>
</attributes>
<note>
<pitch>
<step>C</step>
<octave>4</octave>
</pitch>
<duration>16</duration>
<voice>2</voice>
<type>half</type>
</note>
<note>
<chord />
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>16</duration>
<voice>2</voice>
<type>half</type>
</note>
<note>
<pitch>
<step>C</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>2</voice>
<type>quarter</type>
</note>
<note>
<chord />
<pitch>
<step>F</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>2</voice>
<type>quarter</type>
</note>
<backup><duration>24</duration></backup>
<note>
<pitch>
<step>A</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
<note>
<pitch>
<step>C</step>
<octave>5</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
<note>
<pitch>
<step>A</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
</measure>
</part>
<part id="P2">
<measure number="1">
<attributes>
<divisions>8</divisions>
<time><beats>3</beats><beat-type>4</beat-type></time>
</attributes>
<note>
<pitch>
<step>C</step>
<octave>4</octave>
</pitch>
<duration>16</duration>
<voice>1</voice>
<type>half</type>
</note>
<note>
<pitch>
<step>C</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
</measure>
<measure number="2">
<attributes>
<divisions>8</divisions>
</attributes>
<note>
<pitch>
<step>C</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
<note>
<pitch>
<step>G</step>
<octave>4</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
<note>
<pitch>
<step>B</step>
<octave>3</octave>
</pitch>
<duration>8</duration>
<voice>1</voice>
<type>quarter</type>
</note>
</measure>
<measure number="3">
<attributes>
<divisions>8</divisions>
</attributes>
<note>
<pitch>
<step>A</step>
<octave>3</octave>
</pitch>
<duration>24</duration>
<voice>1</voice>
<type>half</type>
<dot/>
</note>
</measure>
</part>
</score-partwise>