Add support for ACE (#592)

Author: dcfreire

core.d.ts

@@ -148,6 +148,7 @@ export type FileExtension =
 	| 'class'
 	| 'arj'
 	| 'cpio'
+	| 'ace'
 	; // eslint-disable-line semi-style
 
 export type MimeType =
@@ -292,6 +293,7 @@ export type MimeType =
 	| 'application/java-vm'
 	| 'application/x-arj'
 	| 'application/x-cpio'
+	| 'application/x-ace-compressed'
 	; // eslint-disable-line semi-style
 
 export type FileTypeResult = {

core.js

@@ -1020,6 +1020,16 @@ class FileTypeParser {
 			};
 		}
 
+		if (this.checkString('**ACE', {offset: 7})) {
+			await tokenizer.peekBuffer(this.buffer, {length: 14, mayBeLess: true});
+			if (this.checkString('**', {offset: 12})) {
+				return {
+					ext: 'ace',
+					mime: 'application/x-ace-compressed',
+				};
+			}
+		}
+
 		// -- 8-byte signatures --
 
 		if (this.check([0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A])) {

fixture/fixture.ace

@@ -200,7 +200,8 @@
 		"parquet",
 		"class",
 		"arj",
-		"cpio"
+		"cpio",
+		"ace"
 	],
 	"dependencies": {
 		"readable-web-to-node-stream": "^3.0.2",

package.json

@@ -344,6 +344,7 @@ Returns a `Set<string>` of supported MIME types.
 - [`Z`](https://fileinfo.com/extension/z) - Unix Compressed File
 - [`aac`](https://en.wikipedia.org/wiki/Advanced_Audio_Coding) - Advanced Audio Coding
 - [`ac3`](https://www.atsc.org/standard/a522012-digital-audio-compression-ac-3-e-ac-3-standard-12172012/) - ATSC A/52 Audio File
+- [`ace`](https://en.wikipedia.org/wiki/ACE_(compressed_file_format)) - ACE archive
 - [`ai`](https://en.wikipedia.org/wiki/Adobe_Illustrator_Artwork) - Adobe Illustrator Artwork
 - [`aif`](https://en.wikipedia.org/wiki/Audio_Interchange_File_Format) - Audio Interchange file
 - [`alias`](https://en.wikipedia.org/wiki/Alias_%28Mac_OS%29) - macOS Alias file

readme.md

@@ -145,6 +145,7 @@ export const extensions = [
 	'class',
 	'arj',
 	'cpio',
+	'ace',
 ];
 
 export const mimeTypes = [
@@ -289,4 +290,5 @@ export const mimeTypes = [
 	'application/java-vm',
 	'application/x-arj',
 	'application/x-cpio',
+	'application/x-ace-compressed',
 ];