Develop Reference

Problem passing file to an input-type-file webelement

How to set File objects and length property at FileList object where the files are also reflected at FormData object?
I was trying to use the hack described in the link above to insert through code the file I want to upload to an '<input type='file', but I am having trouble to implement it.
I am using the following code as a snippet in Chrome devtools Console Panel:
inp = document.querySelector("input[type=file]");
const dT = new DataTransfer();
dT.items.add(new File(['foo'], 'C:\\Users\\MyUser\\Desktop\\SomeFolder\\MyTestFile.txt'));
inp.files = dT.files;
The input text that should display only the file name shows the full path, and when I press the button to upload the file it return an error saying that the file was not founded.
I already check the path and it is 100% right. I don't know much about javascript, in fact I am using Selenium to do the rest of the automation, but this particular subject looks like can only be achieved with js.
Could anyone help me? Am I mising something or did I misunderstood the hack solution and what I am trying to do is not possible at all?

Why does adding image to a google form using Form.addImageItem() result in "Invalid data updating form"?

I'm trying to automatically insert an image from a Google drive into a Google form with the help of a Google script using the addImage function, which has recently stopped working and leads to the error message 'Invalid data update formular'.
I'm using Google forms to allow users to enter text from images.
Some sort of manual image recognition.
The images are stored on the googel drive in a directory.
A Google script inserts them into a form and adds several questions with short answers, multiple choice questions and page breaks.
So until recently everything worked, but now the addImage function of the form returns the error message
Invalid data update form.
I have tried to do do the following:
created a new form with a new script to test addImageItem function (source below)
tested that all other functions to add items to the form except addImageItem (like addMultipleChoiceItem, addPageBreakItem, addCheckboxItem, addTextItem) still work
add image manualy to see if that still work
use other formats as image source (JPG and PNG)
use different files on the google drive as image source
use UrlFetchApp.fetch function as image source (like in the documentation example)
All attempts with addImageItem unsuccessful.
The functions addMultipleChoiceItem, addPageBreakItem, addCheckboxItem, addTextItem return the desired result by adding Items to the form.
Also adding image by hand using the edit form interface stil works.
The images we update are about 60kB in size, about 800x600 px large.
The answers to this thread from 2012 which looks similar do not help. The error messages in the question are different. I also tried to use the getBlob() and getThumbnail() functions, as mentioned in the answers there, but they also lead to the error 'Invalid data update form'.
function myFunction() {
var form = FormApp.openById("drive_file_id_of_form");
var img = DriveApp.getFileById("drive_file_id_of_image");
var imgFormItem = form.addImageItem();
imgFormItem.setImage(img);
//var img = UrlFetchApp.fetch('https://www.google.com/images/srpr/logo4w.png');
//var blob = img.getThumbnail();
//var blob = img.getBlob();
//form.addImageItem().setImage(blob);
}
According to the google documentation, addImage should return a newly created ImageItem as a return value but lead to the error on line 4:
Invalid data for updating the form. (line4, file "Code")
Can someone please help me find out what is invalid in the form data or in the images I try to add and how to avoid this problem?
Edit: found a fresh bug tracker id for this topic on google issue tracker

set file attribute filesystemobject javascript

I have created a file as part of a script on a network drive and i am trying to make it hidden so that if the script is run again it should be able to see the file and act on the information contained within it but i am having trouble doing this. what i have so far is:
function doesRegisterExist(oFs, Date, newFolder) {
dbEcho("doesRegisterExist() triggered");
sExpectedRegisterFile = newFolder+"\\Register.txt"
if(oFs.FileExists(sExpectedRegisterFile)==false){
newFile = oFs.OpenTextFile(sExpectedRegisterFile,8,true)
newFile.close()
newReg = oFs.GetFile(sExpectedRegisterFile)
dbEcho(newReg.Attributes)
newReg.Attributes = newReg.Attributes+2
}
}
Windows Script Host does not actually produce an error here and the script runs throgh to competion. the only guides i have found online i have been attempting to translate from VBscript with limited success.
variables passed to this function are roughly declared as such
var oFs = new ActiveXObject("Scripting.FileSystemObject")
var Date = "29-12-2017"
var newFolder = "\\\\File-Server\\path\\to\\folder"
I know ActiveX is a dirty word to a lot of people and i should be shot for even thinking about using it but it really is a perfect fit for what i am trying to do.
Please help.

sExpectedRegisterFolder resolves to \\\\File-Server\\path\\to\\folder\\Register which is a folder and not a file.
I get an Error: file not found when I wrap the code into a try/catch block.
I tested the code on a text file as well, and there it works.
So you're either using the wrong method if you want to set the folder to hidden.
Or you forgot to include the path to the text if you want to change a file to hidden.
( Edit: Or if Register is the name of the file, add the filetype .txt ? )
If you change GetFile to GetFolder as described in https://msdn.microsoft.com/en-us/library/6tkce7xa(v=vs.84).aspx
the folder will get hidden correctly.

How to fetch file content (basically read) a local file in javascript for UIAutomation iOS

Is there a possible way to read a local file in JavaScript.
MyFolder:
db.csv
Parse.js
Trying to fetch the contents of file db.csv in Parse.js, But in vain.
Can you share some links where I can get enough knowledge how to read a file.
Running Instruments in Xcode5, with test scripts in .js file where I have to feed in some values from a .csv file.

iOS UIAutomation, apple provides an api for running a task on the target's host.
performTaskWithPathArgumentsTimeout
Using this, we can have a bash script to printout the contents of a file that we wanted to fetch in the first case.
Bash script can be as simple as this for this requirement.
#! /bin/bash
FILE_NAME="$1"
cat $FILE_NAME
Save it as for example FileReader.sh file.
And in your automation script,
var target = UIATarget.localTarget();
var host = target.host();
var result = host.performTaskWithPathArgumentsTimeout(executablePath,[filePath,fileName], 15);
UIALogger.logDebug("exitCode: " + result.exitCode);
UIALogger.logDebug("stdout: " + result.stdout);
UIALogger.logDebug("stderr: " + result.stderr);
where in,
executablePath is where the command need to be executed.
var executablePath = "/bin/sh";
filePath is the location of the created FileReader.sh file. When executed, outputs the content to standard output (in our requirement).
[give full absolute path of the file]
fileName is the actual file to fetch contents from.
[give full absolute path of the file] In my case I had a Contents.csv file, which I had to read.
and the last parameter is the timeout in seconds.
Hope this helps others, trying to fetch contents (reading files) for performing iOS UIAutomation.
References:
https://stackoverflow.com/a/19016573/344798
https://developer.apple.com/library/iOS/documentation/UIAutomation/Reference/UIAHostClassReference/UIAHost/UIAHost.html

If the file is on the same domain as the site you're in, you'd load it with Ajax. If you're using Ajax, it's be something like
$.get('db.csv', function(csvContent){
//process here
});
Just note that the path to the csv file will be relative to the web page you're in, not the JavaScript file.
If you're not using jQuery, you'd have to manually work with an XmlHttpRequest object to do your Ajax call.
And though your question doesn't (seem to) deal with it, if the file is located on a different domain, then you'd have to use either jsonP or CORS.
And, just in case this is your goal, no, you can't, in client side JavaScript open up some sort of Stream and read in a file. That would be a monstrous security vulnerability.

This is a fairly simple function in Illuminator's host functions library:
function readFromFile(path) {
var result = target.host().performTaskWithPathArgumentsTimeout("/bin/cat", [path], 10);
// be verbose if something didn't go well
if (0 != result.exitCode) {
throw new Error("readFromFile failed: " + result.stderr);
}
return result.stdout;
}
If you are using Illuminator, this is host().readFromFile(path).

Using jQuery, Restricting File Size Before Uploading

On PHP, they have a way to restrict file size AFTER uploading, but not BEFORE uploading. I use the Malsup jQuery Form Plugin for my form posting, and it supports image file posting.
I was wondering if perhaps there's a restriction where I can set how many bytes can pass through that AJAX stream up to the server? That could permit me to check that file size and return an error if the file is too big.
By doing this on the client side, it blocks those newbies who take a 10MB photo shot from their Pentax and try to upload that.

This is a copy from my answers in a very similar question: How to check file input size with jQuery?
You actually don't have access to the filesystem (for example reading and writing local files). However, due to the HTML5 File API specification, there are some file properties that you do have access to, and the file size is one of them.
For this HTML:
<input type="file" id="myFile" />
try the following:
//binds to onchange event of your input field
$('#myFile').bind('change', function() {
//this.files[0].size gets the size of your file.
alert(this.files[0].size);
});
As it is a part of the HTML5 specification, it will only work for modern browsers (v10 required for IE) and I added here more details and links about other file information you should know: http://felipe.sabino.me/javascript/2012/01/30/javascipt-checking-the-file-size/
Old browsers support
Be aware that old browsers will return a null value for the previous this.files call, so accessing this.files[0] will raise an exception and you should check for File API support before using it

I don't think it's possible unless you use a flash, activex or java uploader.
For security reasons ajax / javascript isn't allowed to access the file stream or file properties before or during upload.

I tried it this way and I am getting the results in IE*, and Mozilla 3.6.16, didnt check in older versions.
<img id="myImage" src="" style="display:none;"><br>
<button onclick="findSize();">Image Size</button>
<input type="file" id="loadfile" />
<input type="button" value="find size" onclick="findSize()" />
<script type="text/javascript">
function findSize() {
if ( $.browser.msie ) {
var a = document.getElementById('loadfile').value;
$('#myImage').attr('src',a);
var imgbytes = document.getElementById('myImage').size;
var imgkbytes = Math.round(parseInt(imgbytes)/1024);
alert(imgkbytes+' KB');
}else {
var fileInput = $("#loadfile")[0];
var imgbytes = fileInput.files[0].fileSize; // Size returned in bytes.
var imgkbytes = Math.round(parseInt(imgbytes)/1024);
alert(imgkbytes+' KB');
}
}
</script>
Add Jquery library also.

I encountered the same issue. You have to use ActiveX or Flash (or Java). The good thing is that it doesn't have to be invasive. I have a simple ActiveX method that will return the size of the to-be-uploaded file.
If you go with Flash, you can even do some fancy js/css to cusomize the uploading experience--only using Flash (as a 1x1 "movie") to access it's file uploading features.

I found that Apache2 (you might want to also check Apache 1.5) has a way to restrict this before uploading by dropping this in your .htaccess file:
LimitRequestBody 2097152
This restricts it to 2 megabytes (2 * 1024 * 1024) on file upload (if I did my byte math properly).
Note when you do this, the Apache error log will generate this entry when you exceed this limit on a form post or get request:
Requested content-length of 4000107 is larger than the configured limit of 2097152
And it will also display this message back in the web browser:
<h1>Request Entity Too Large</h1>
So, if you're doing AJAX form posts with something like the Malsup jQuery Form Plugin, you could trap for the H1 response like this and show an error result.
By the way, the error number returned is 413. So, you could use a directive in your .htaccess file like...
Redirect 413 413.html
...and provide a more graceful error result back.

$(".jq_fileUploader").change(function () {
var fileSize = this.files[0];
var sizeInMb = fileSize.size/1024;
var sizeLimit= 1024*10;
if (sizeInMb > sizeLimit) {
}
else {
}
});

Try below code:
var sizeInKB = input.files[0].size/1024; //Normally files are in bytes but for KB divide by 1024 and so on
var sizeLimit= 30;
if (sizeInKB >= sizeLimit) {
alert("Max file size 30KB");
return false;
}

Like others have said, it's not possible with just JavaScript due to the security model of such.
If you are able to, I'd recommend one of the below solutions..both of which use a flash component for the client side validations; however, are wired up using Javascript/jQuery. Both work very well and can be used with any server-side tech.
http://www.uploadify.com/
http://swfupload.org/

It's not possible to verify the image size, width or height on the client side. You need to have this file uploaded on the server and use PHP to verify all this info.
PHP has special functions like: getimagesize()
list($width, $height, $type, $attr) = getimagesize("img/flag.jpg");
echo "<img src=\"img/flag.jpg\" $attr alt=\"getimagesize() example\" />";