dev

node_modules/express-fileupload/lib/memHandler.js

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+const crypto = require('crypto');
+const { debugLog } = require('./utilities');
+
+/**
+ * memHandler - In memory upload handler
+ * @param {Object} options
+ * @param {String} fieldname
+ * @param {String} filename
+ * @returns {Object}
+ */
+module.exports = (options, fieldname, filename) => {
+  const buffers = [];
+  const hash = crypto.createHash(options.hashAlgorithm);
+  let fileSize = 0;
+  let completed = false;
+
+  const getBuffer = () => Buffer.concat(buffers, fileSize);
+
+  return {
+    dataHandler: (data) => {
+      if (completed === true) {
+        debugLog(options, `Error: got ${fieldname}->${filename} data chunk for completed upload!`);
+        return;
+      }
+      buffers.push(data);
+      hash.update(data);
+      fileSize += data.length;
+      debugLog(options, `Uploading ${fieldname}->${filename}, bytes:${fileSize}...`);
+    },
+    getBuffer: getBuffer,
+    getFilePath: () => '',
+    getFileSize: () => fileSize,
+    getHash: () => hash.digest('hex'),
+    complete: () => {
+      debugLog(options, `Upload ${fieldname}->${filename} completed, bytes:${fileSize}.`);
+      completed = true;
+      return getBuffer();
+    },
+    cleanup: () => { completed = true; },
+    getWritePromise: () => Promise.resolve()
+  };
+};