Inital build

frontend/node_modules/tus-js-client/lib/browser/fileSignature.js

@@ -0,0 +1,41 @@
+import isReactNative from './isReactNative.js'
+
+// TODO: Differenciate between input types
+
+/**
+ * Generate a fingerprint for a file which will be used the store the endpoint
+ *
+ * @param {File} file
+ * @param {Object} options
+ * @param {Function} callback
+ */
+export default function fingerprint(file, options) {
+  if (isReactNative()) {
+    return Promise.resolve(reactNativeFingerprint(file, options))
+  }
+
+  return Promise.resolve(
+    ['tus-br', file.name, file.type, file.size, file.lastModified, options.endpoint].join('-'),
+  )
+}
+
+function reactNativeFingerprint(file, options) {
+  const exifHash = file.exif ? hashCode(JSON.stringify(file.exif)) : 'noexif'
+  return ['tus-rn', file.name || 'noname', file.size || 'nosize', exifHash, options.endpoint].join(
+    '/',
+  )
+}
+
+function hashCode(str) {
+  // from https://stackoverflow.com/a/8831937/151666
+  let hash = 0
+  if (str.length === 0) {
+    return hash
+  }
+  for (let i = 0; i < str.length; i++) {
+    const char = str.charCodeAt(i)
+    hash = (hash << 5) - hash + char
+    hash &= hash // Convert to 32bit integer
+  }
+  return hash
+}