first commit

packages/nodes-base/nodes/Files/ReadWriteFile/helpers/utils.ts

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+import type { IDataObject, IExecuteFunctions } from 'n8n-workflow';
+import { NodeOperationError } from 'n8n-workflow';
+import path from 'node:path';
+
+export function errorMapper(
+	this: IExecuteFunctions,
+	error: Error,
+	itemIndex: number,
+	context?: IDataObject,
+) {
+	let message;
+	let description;
+
+	if (typeof error.message === 'string') {
+		if (error.message.includes('Cannot create a string longer than')) {
+			message = 'The file is too large';
+			description =
+				'The binary file you are attempting to read exceeds 512MB, which is limit when using default binary data mode, try using the filesystem binary mode. More information <a href="https://docs.n8n.io/hosting/scaling/binary-data/" target="_blank">here</a>.';
+		} else if (error.message.includes('EACCES') && context?.operation === 'read') {
+			const path =
+				((error as unknown as IDataObject).path as string) || (context?.filePath as string);
+			message = `You don't have the permissions to access ${path}`;
+			description =
+				"Verify that the path specified in 'File(s) Selector' is correct, or change the file(s) permissions if needed";
+		} else if (error.message.includes('EACCES') && context?.operation === 'write') {
+			const path =
+				((error as unknown as IDataObject).path as string) || (context?.filePath as string);
+			message = `You don't have the permissions to write the file ${path}`;
+			description =
+				"Specify another destination folder in 'File Path and Name', or change the permissions of the parent folder";
+		}
+	}
+
+	return new NodeOperationError(this.getNode(), error, { itemIndex, message, description });
+}
+
+export function escapeSpecialCharacters(str: string) {
+	// Escape parentheses
+	str = str.replace(/[()]/g, '\\$&');
+
+	return str;
+}
+
+export function normalizeFileSelector(fileSelectorRaw: string) {
+	let fileSelector = String(fileSelectorRaw);
+
+	const isWindows = /^[a-zA-Z]:/.test(fileSelector);
+	if (isWindows) {
+		fileSelector = path.win32.normalize(fileSelector).replace(/\\/g, '/');
+	}
+
+	fileSelector = escapeSpecialCharacters(fileSelector);
+
+	return fileSelector;
+}