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Retrieving Access Token for Service Account using Javascript

This is a sample script for retrieving the access token for Service Account using Javascript. The flow for using this script is as follows.

At first, please create the Service Account and retrieve JSON file.
Put Scopes, private_key and client_email to the script.
Run the script.

Sample script

In this script, 2 libraries of jsencrypt and crypto-js are used.

Uploading File to Google Drive from External HTML without Authorization

This is a sample script for uploading a file to Google Drive from the external HTML without the authorization. In this case, the client side can be used at the outside of Google. And as the server side, the Web Apps created by Google Apps Script is used.

Usage

Please do the following flow.

1. Create new project of Google Apps Script.

Sample Scripts for Requesting to Web Apps by Various Languages

These are the sample scripts by the various languages for requesting to Web Apps created by Google Apps Script.

curl
Google Apps Script
Javascript
ajax

Google Apps Script pdfToText Utility#

This is a helper function that will convert a given PDF file blob into text, as well as offering options to save the original PDF, intermediate Google Doc, and/or final plain text files. Additionally, the language used for Optical Character Recognition (OCR) may be specified, defaulting to 'en' (English).

Note: Updated 12 May 2015 due to deprecation of DocsList. Thanks to Bruce McPherson for the getDriveFolderFromPath() utility.

    // Start with a Blob object
    var blob = gmailAttchment.getAs(MimeType.PDF);

	var KEY = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'; //developer key , get from https://code.google.com/apis/console/b/1/
	var FILE_ID = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'; // drive file id
	function convertDocuments2() {

	var oauthConfig = UrlFetchApp.addOAuthService('drive');

	//Create oauth config for drive api
	var scope = 'https://www.googleapis.com/auth/drive';
	oauthConfig.setConsumerKey('anonymous');
	oauthConfig.setConsumerSecret('anonymous');

	function doGet(request) {
	if (request.parameters.url != undefined && request.parameters.url != "") {
	var imageBlob = UrlFetchApp.fetch(request.parameters.url).getBlob();
	var resource = {
	title: imageBlob.getName(),
	mimeType: imageBlob.getContentType()
	};
	var options = {
	ocr: true
	};