Improve WebM detection (#486)

sindresorhus · Sep 1, 2021 · b23be62 · b23be62
1 parent d556d4e
commit b23be62
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Showing 3 changed files with 5 additions and 1 deletion.
diff --git a/core.js b/core.js
@@ -736,7 +736,8 @@ async function _fromTokenizer(tokenizer) {
 			while (children > 0) {
 				const element = await readElement();
 				if (element.id === 0x42_82) {
-					return tokenizer.readToken(new Token.StringType(element.len, 'utf-8')); // Return DocType
+					const rawValue = await tokenizer.readToken(new Token.StringType(element.len, 'utf-8'));
+					return rawValue.replace(/\00.*$/g, ''); // Return DocType
 				}
 
 				await tokenizer.ignore(element.len); // ignore payload

diff --git a/fixture/fixture-null.webm b/fixture/fixture-null.webm
diff --git a/test.js b/test.js
@@ -203,6 +203,9 @@ const names = {
 		'fixture-fast-web', // PDF saved from Adobe Illustrator, using the default "[Illustrator Default"] preset, but enabling "Optimize for Fast Web View"
 		'fixture-printed', // PDF printed from Adobe Illustrator, but with a PDF printer.
 	],
+	webm: [
+		'fixture-null', // EBML DocType with trailing null character
+	],
 };
 
 // Define an entry here only if the file type has potential