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allow loading midimap from url

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Felix Roos 2025-02-02 23:49:17 +01:00
parent b74d5becd5
commit d86df33b8c
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1 changed files with 26 additions and 2 deletions
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28
packages/midi/midi.mjs
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@ -107,10 +107,34 @@ function unifyMapping(mapping) {
export function addMidimap(name, mapping) {
midiMappings.set(name, unifyMapping(mapping));
}
function githubPath(base, subpath = '') {
if (!base.startsWith('github:')) {
throw new Error('expected "github:" at the start of pseudoUrl');
}
let [_, path] = base.split('github:');
path = path.endsWith('/') ? path.slice(0, -1) : path;
if (path.split('/').length === 2) {
// assume main as default branch if none set
path += '/main';
}
return `https://raw.githubusercontent.com/${path}/${subpath}`;
}
let loadCache = {};
// adds multiple midimaps to the registry
export function midimaps(map) {
export async function midimaps(map) {
if (typeof map === 'string') {
if (map.startsWith('github:')) {
map = githubPath(map, 'midimap.json');
}
if (!loadCache[map]) {
loadCache[map] = fetch(map).then((res) => res.json());
}
map = await loadCache[map];
}
if (typeof map === 'object') {
Object.entries(midiMappings).forEach(([name, mapping]) => addMidimap(name, mapping));
Object.entries(map).forEach(([name, mapping]) => addMidimap(name, mapping));
}
}