index.js

// file should be a string
function parseFilename(file, version) {
	const info = {
		id: file,
		files: [file],
	};

	// to whoever reads this in the future: I'm sorry
	//
	// this code is basically a bunch of if statements that parse certain
	// parts of the `files` property on each release in
	// nodejs.org/dist/index.json and then builds out an object from that
	// so we can have more useful information about each release. It's a bit
	// messy, but it _seemingly_ works, at least at time of writing.
	//
	// Over time, there's historically been additions, so this will likely
	// drift apart from the reality of what's in there. Feel free to either
	// ping me or submit a PR to update it when that happens.

	if (info.files[0].includes('-pkg')) {
		// macOS filenames.
		info.files[0] = `node-v${version}.pkg`;
	} else if (info.files[0].includes('osx-')) {
		// macOS filenames, but with architectures. Different than the above.
		const basemacOSString = `node-v${version}-darwin-`;
		if (info.files[0].includes('arm64')) {
			info.files[0] = basemacOSString.concat('arm64.tar.gz');
		}
		if (info.files[0].includes('x64')) {
			info.files[0] = basemacOSString.concat('x64.tar.gz');
		}
	} else if (info.files[0].includes('-7z')) {
		// windows filenames
		info.files[0] = `node-v${version}-${info.files[0].replace('-7z', '.7z')}`;
	} else if (info.files[0].includes('-zip')) {
		info.files[0] = `node-v${version}-${info.files[0].replace('-zip', '.zip')}`;
	} else if (info.files[0].includes('-msi')) {
		info.files[0] = `node-v${version}-${info.files[0]
			.replace('-msi', '.msi')
			.replace('win-', '')}`;
	} else if (info.files[0].includes('-exe')) {
		info.files[0] = 'win-x64/node.exe';
		info.files.push('win-x64/node.lib');
		info.files.push('win-x64/node_pdb.7z');
		info.files.push('win-x64/node_pdb.zip');
		info.files.push('win-x86/node.exe');
		info.files.push('win-x86/node.lib');
		info.files.push('win-x86/node_pdb.7z');
		info.files.push('win-x86/node_pdb.zip');
	} else if (info.files[0] === 'src') {
		// source filenames.
		info.files[0] = `node-v${version}.tar.gz`;
		info.files[0] = `node-v${version}.tar.xz`;
	} else if (
		info.files[0].includes('linux-') ||
		info.files[0] === 'headers' ||
		info.files[0] === 'aix-ppc64' ||
		info.files[0].includes('sunos')
	) {
		// linux, headers, and aix
		info.files[0] = `node-v${version}-${info.files[0]}.tar.gz`;
		info.files.push(info.files[0].replace('.tar.gz', '.tar.xz'));
	}

	// handle the types appropriately.
	if (file.includes('osx-')) {
		info.type = 'macos';
	} else if (file.includes('linux-')) {
		info.type = 'linux';
	} else if (file.includes('win-')) {
		info.type = 'windows';
	} else if (file.includes('headers')) {
		info.type = 'headers';
	} else if (file.includes('src')) {
		info.type = 'source';
	} else if (file.includes('aix-ppc64')) {
		info.type = 'aix';
	} else if (file.includes('sunos-x64') || file.includes('sunos-x86')) {
		info.type = 'sunos';
	}

	// some of this is probably wrong but also I'm not familiar enough with
	// architectures and their names to know what's right/wrong.
	//
	// fixes are welcome. I just ask that you keep it relatively nice looking...
	// ugly names are bad dx.
	if (info.id.includes('x86')) {
		info.architecture = 'x86';
	} else if (info.id.includes('x64')) {
		info.architecture = 'x64';
	} else if (info.id.includes('arm64')) {
		info.architecture = 'arm64';
	} else if (info.id.includes('armv7l')) {
		info.architecture = 'armv7l';
	} else if (info.id.includes('armv6l')) {
		info.architecture = 'armv6l';
	} else if (
		info.id.includes('aix-ppc64') ||
		info.files[0].includes('ppc64le')
	) {
		info.architecture = 'power';
	} else if (info.id.includes('s390x')) {
		info.architecture = 'z';
	}

	return info;
}

module.exports = parseFilename;