Add support for Encapsulated PostScript (EPS) (#353)

sindresorhus · May 4, 2020 · 070c4c1 · 070c4c1
1 parent 9623ab5
commit 070c4c1
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Showing 8 changed files with 31 additions and 3 deletions.
diff --git a/core.d.ts b/core.d.ts
@@ -130,7 +130,8 @@ declare namespace core {
 		| 'xm'
 		| 'ai'
 		| 'skp'
-		| 'avif';
+		| 'avif'
+		| 'eps';
 
 	type MimeType =
 		| 'image/jpeg'
@@ -195,6 +196,7 @@ declare namespace core {
 		| 'image/x-icon'
 		| 'video/x-flv'
 		| 'application/postscript'
+		| 'application/eps'
 		| 'application/x-xz'
 		| 'application/x-sqlite3'
 		| 'application/x-nintendo-nes-rom'

diff --git a/core.js b/core.js
@@ -120,6 +120,16 @@ async function _fromTokenizer(tokenizer) {
 	}
 
 	if (check([0x25, 0x21])) {
+		await tokenizer.peekBuffer(buffer, {length: 24, mayBeLess: true});
+
+		if (checkString('PS-Adobe-', {offset: 2}) &&
+			checkString(' EPSF-', {offset: 14})) {
+			return {
+				ext: 'eps',
+				mime: 'application/eps'
+			};
+		}
+
 		return {
 			ext: 'ps',
 			mime: 'application/postscript'
@@ -768,6 +778,13 @@ async function _fromTokenizer(tokenizer) {
 		};
 	}
 
+	if (check([0xC5, 0xD0, 0xD3, 0xC6])) {
+		return {
+			ext: 'eps',
+			mime: 'application/eps'
+		};
+	}
+
 	// -- 5-byte signatures --
 
 	if (check([0x4F, 0x54, 0x54, 0x4F, 0x00])) {

diff --git a/fixture/fixture.eps b/fixture/fixture.eps
diff --git a/fixture/fixture2.eps b/fixture/fixture2.eps
diff --git a/package.json b/package.json
@@ -173,7 +173,8 @@
 		"xm",
 		"ai",
 		"skp",
-		"avif"
+		"avif",
+		"eps"
 	],
 	"devDependencies": {
 		"@types/node": "^13.1.4",

diff --git a/readme.md b/readme.md
@@ -397,6 +397,7 @@ Returns a set of supported MIME types.
 - [`ai`](https://en.wikipedia.org/wiki/Adobe_Illustrator_Artwork) - Adobe Illustrator Artwork
 - [`skp`](https://en.wikipedia.org/wiki/SketchUp) - SketchUp
 - [`avif`](https://en.wikipedia.org/wiki/AV1#AV1_Image_File_Format_(AVIF)) - AV1 Image File Format
+- [`eps`](https://en.wikipedia.org/wiki/Encapsulated_PostScript) - Encapsulated PostScript
 
 *Pull requests are welcome for additional commonly used file types.*
 

diff --git a/supported.js b/supported.js
@@ -128,7 +128,8 @@ module.exports = {
 		'xm',
 		'ai',
 		'skp',
-		'avif'
+		'avif',
+		'eps'
 	],
 	mimeTypes: [
 		'image/jpeg',
@@ -194,6 +195,7 @@ module.exports = {
 		'image/x-icon',
 		'video/x-flv',
 		'application/postscript',
+		'application/eps',
 		'application/x-xz',
 		'application/x-sqlite3',
 		'application/x-nintendo-nes-rom',

diff --git a/test.js b/test.js
@@ -157,6 +157,10 @@ const names = {
 	],
 	avif: [
 		'fixture-yuv420-8bit' // Multiple bit-depths and/or subsamplings
+	],
+	eps: [
+		'fixture',
+		'fixture2'
 	]
 };