Add support for APK (#679)

Author: epicmet

core.d.ts

@@ -166,6 +166,7 @@ export type FileExtension =
 	| 'fbx'
 	| 'vsdx'
 	| 'vtt'
+	| 'apk'
 	; // eslint-disable-line semi-style
 
 export type MimeType =
@@ -318,6 +319,7 @@ export type MimeType =
 	| 'application/vnd.iccprofile'
 	| 'application/x.autodesk.fbx'
 	| 'application/vnd.visio'
+	| 'application/vnd.android.package-archive'
 	; // eslint-disable-line semi-style
 
 export type FileTypeResult = {

core.js

@@ -404,6 +404,13 @@ export class FileTypeParser {
 					zipHeader.filename = await tokenizer.readToken(new Token.StringType(zipHeader.filenameLength, 'utf-8'));
 					await tokenizer.ignore(zipHeader.extraFieldLength);
 
+					if (/classes\d*\.dex/.test(zipHeader.filename)) {
+						return {
+							ext: 'apk',
+							mime: 'application/vnd.android.package-archive',
+						};
+					}
+
 					// Assumes signed `.xpi` from addons.mozilla.org
 					if (zipHeader.filename === 'META-INF/mozilla.rsa') {
 						return {

fixture/fixture.apk

@@ -216,7 +216,8 @@
 		"icc",
 		"fbx",
 		"vsdx",
-		"vtt"
+		"vtt",
+		"apk"
 	],
 	"dependencies": {
 		"get-stream": "^9.0.1",

package.json

@@ -398,6 +398,7 @@ abortController.abort(); // Abort file-type reading from the Blob stream.
 - [`alias`](https://en.wikipedia.org/wiki/Alias_%28Mac_OS%29) - macOS Alias file
 - [`amr`](https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec) - Adaptive Multi-Rate audio codec
 - [`ape`](https://en.wikipedia.org/wiki/Monkey%27s_Audio) - Monkey's Audio
+- [`apk`](https://en.wikipedia.org/wiki/Apk_(file_format)) - Android package format
 - [`apng`](https://en.wikipedia.org/wiki/APNG) - Animated Portable Network Graphics
 - [`ar`](https://en.wikipedia.org/wiki/Ar_(Unix)) - Archive file
 - [`arj`](https://en.wikipedia.org/wiki/ARJ) - Archive file

readme.md

@@ -153,6 +153,7 @@ export const extensions = [
 	'fbx',
 	'vsdx',
 	'vtt',
+	'apk',
 ];
 
 export const mimeTypes = [
@@ -305,4 +306,5 @@ export const mimeTypes = [
 	'application/vnd.iccprofile',
 	'application/x.autodesk.fbx', // Invented by us
 	'application/vnd.visio',
+	'application/vnd.android.package-archive',
 ];