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function germanNote(note) {
switch (note) {
case "B#": return "H#";
case "B♯": return "H♯";
case "B": return "H";
case "Bb": return "B";
case "B♭": return "B";
}
return note;
}
function translateChord(chordString, jazzchords, germanAlphabet) {
var lines = chordString.split("\n");
for (let i = 0; i < lines.length; i++) {
let chord = lines[i];
// If the chord isn't in a recognizable format then just skip it.
let reg = chord.match(/^([ABCDEFG][♯♭]?)?([^\/]+)?(\/([ABCDEFG][#b♯♭]?))?/);
if (!reg) {
continue;
}
let baseChord = reg[1] || "";
let modifier = reg[2] || "";
let bassNote = reg[4] || "";
if (germanAlphabet) {
baseChord = germanNote(baseChord);
bassNote = germanNote(bassNote);
}
// This puts markers in the pieces of the chord that are read by the svg creator.
// After the main part of the chord (the letter, a sharp or flat, and "m") a marker is added. Before a slash a marker is added.
const marker = jazzchords ? "\x03" : "";
const bass = bassNote ? "/" + bassNote : "";
lines[i] = [baseChord, modifier, bass].join(marker);
}
return lines.join("\n");
}
module.exports = translateChord;
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