[JS][CS3] Loading text into memory

Question

Hi.
Am am trying to access an external txt file which holds data for my script.  I have looked at the famous "FindChangeByList" and tried to work from there.  However, I am not going to need input from the user for the txt file location, it will always be the same:
myFilePath="/Mailer Support/savers.txt";//always going to be there
myFile = File(myFilePath);
myData = myFile.open("r", undefined,undefined);
myLine = myFile.readln(); //I know I need loops for this, but there is text on the first line of the TXT file
myText = myFile.read();
alert (myLine);//Blank!!
myText = myFile.read();
alert (myText);//Blank also
Can someone help with this please.
I know I had a PDF file that detailed the way to call and work with files, but I cannot find it.  Does someone know the name of it?
Cheers
Roy

Answer 1

Your code works just fine for me. I'd suggest adding
myStatus = myFile.open("r", undefined,undefined);
if (myStatus == false) { alert ("Unable to open that file"); exit(0); }
to check if it actually exists (open returns a state flag, rather than 'data'). A quick experiment shows that JS doesn't care if a non-existant file is opened for reading (other than just about any other programming language I could care to name!), and indeed "reads" blank lines if it doesn't exist.
By the way, you used this line twice:
myText = myFile.read();
-- overwriting "myText" the second time. Since the first "read" already read up to the end of the file, the second time around the variable is emptied.