Add support for lnk and alias formats (#200)

Fixes #192
sindresorhus · Apr 20, 2019 · aacd31a · aacd31a
1 parent 44b3c34
commit aacd31a
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Showing 7 changed files with 25 additions and 3 deletions.
diff --git a/fixture/fixture.alias b/fixture/fixture.alias
diff --git a/fixture/fixture.lnk b/fixture/fixture.lnk
diff --git a/index.d.ts b/index.d.ts
@@ -95,7 +95,9 @@ declare namespace fileType {
 		| 'ics'
 		| 'glb'
 		| 'pcap'
-		| 'dsf';
+		| 'dsf'
+		| 'lnk'
+		| 'alias';
 
 	interface FileTypeResult {
 		/**

diff --git a/index.js b/index.js
@@ -919,6 +919,20 @@ const fileType = input => {
 			mime: 'audio/x-dsf' // Non-standard
 		};
 	}
+
+	if (check([0x4C, 0x00, 0x00, 0x00, 0x01, 0x14, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46])) {
+		return {
+			ext: 'lnk',
+			mime: 'application/x.ms.shortcut' // Invented by us
+		};
+	}
+
+	if (check([0x62, 0x6F, 0x6F, 0x6B, 0x00, 0x00, 0x00, 0x00, 0x6D, 0x61, 0x72, 0x6B, 0x00, 0x00, 0x00, 0x00])) {
+		return {
+			ext: 'alias',
+			mime: 'application/x.apple.alias' // Invented by us
+		};
+	}
 };
 
 module.exports = fileType;

diff --git a/package.json b/package.json
@@ -120,7 +120,9 @@
 		"ics",
 		"glb",
 		"pcap",
-		"dsf"
+		"dsf",
+		"lnk",
+		"alias"
 	],
 	"devDependencies": {
 		"@types/node": "^11.12.2",

diff --git a/readme.md b/readme.md
@@ -217,6 +217,8 @@ Type: [`stream.Readable`](https://nodejs.org/api/stream.html#stream_class_stream
 - [`glb`](https://github.com/KhronosGroup/glTF) - GL Transmission Format
 - [`pcap`](https://wiki.wireshark.org/Development/LibpcapFileFormat) - Libpcap File Format
 - [`dsf`](https://dsd-guide.com/sites/default/files/white-papers/DSFFileFormatSpec_E.pdf) - Sony DSD Stream File (DSF)
+- [`lnk`](https://en.wikipedia.org/wiki/Shortcut_%28computing%29#Microsoft_Windows) - Microsoft Windows file shortcut
+- [`alias`](https://en.wikipedia.org/wiki/Alias_%28Mac_OS%29) - macOS Alias file
 
 *SVG isn't included as it requires the whole file to be read, but you can get it [here](https://github.com/sindresorhus/is-svg).*
 

diff --git a/test.js b/test.js
@@ -104,7 +104,9 @@ const types = [
 	'ics',
 	'glb',
 	'pcap',
-	'dsf'
+	'dsf',
+	'lnk',
+	'alias'
 ];
 
 // Define an entry here only if the fixture has a different