first commit

2026-01-29 01:16:54 +01:00
commit e209e9bbca
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+import assertString from './util/assertString';
+var validMediaType = /^[a-z]+\/[a-z0-9\-\+\._]+$/i;
+var validAttribute = /^[a-z\-]+=[a-z0-9\-]+$/i;
+var validData = /^[a-z0-9!\$&'\(\)\*\+,;=\-\._~:@\/\?%\s]*$/i;
+export default function isDataURI(str) {
+  assertString(str);
+  var data = str.split(',');
+  if (data.length < 2) {
+    return false;
+  }
+  var attributes = data.shift().trim().split(';');
+  var schemeAndMediaType = attributes.shift();
+  if (schemeAndMediaType.slice(0, 5) !== 'data:') {
+    return false;
+  }
+  var mediaType = schemeAndMediaType.slice(5);
+  if (mediaType !== '' && !validMediaType.test(mediaType)) {
+    return false;
+  }
+  for (var i = 0; i < attributes.length; i++) {
+    if (!(i === attributes.length - 1 && attributes[i].toLowerCase() === 'base64') && !validAttribute.test(attributes[i])) {
+      return false;
+    }
+  }
+  for (var _i = 0; _i < data.length; _i++) {
+    if (!validData.test(data[_i])) {
+      return false;
+    }
+  }
+  return true;
+}