copying files
Hi,
I also posted this in the jitter subforum as a follow up on a different question, however the people interested in this topic would probably be here, also for building the knowledge database.
I am trying to copy a file using javascript. however when I can not open the copied file. The player will give me an error, unable to open file.
What am I doing wrong here?
myfile = new File(filename, "read");
myfile.open();
if (myfile.isopen)
{
newName = new String(myfile.filename);
newName = newName.substring(0, newName.length - 4) + "_x.avi";
newFile = new File(location + newName, "readwrite", myfile.filetype);
newFile.open();
while (myfile.eof
{
newFile.writebytes(myfile.readbytes(1));
}
newFile.close();
myfile.close();
There is probably a fundamental flaw in the while loop or the filetype, however I can not see my mistake.
Thanks,
Maarten
On 02-avr.-07, at 20:10, Maarten Zeinstra wrote:
> while (myfile.eof
Shouldn't it be the other way round?
p
_____________________________
Patrick Delges
Centre de Recherches et de Formation Musicales de Wallonie
http://users.skynet.be/crfmw/max
Yes you are absolutely right, I found that one out also.
However when I run the script the file gets copied ok, however Max crashes afterwards. Is there more stuff wrong here?
Greetz,
Maarten
Well I've let go of the javascript solution and went into bash programming :)
With a simple script you can copy the file to a different location and have more control over the copy. using launchbrowser I can execute it, I think haven't tested that part yet..
So thanks for your help. If you would like to take a look at the bash file you can mail me. I will not post it here because of the file alteration I also do.
Bye
I stumbled across the same issue, but I found what was crashing Max. Another issue with Maarten's code is that reading byte per byte is SLOW (like 1s to write a 100kb file). However, reading the whole file at once is not allowed either. Therefore I implemented an intermediate solution:
function copyFile(orig_path, dest_path) {
orig_file = new File(orig_path, "read");
orig_file.open();
if(orig_file.isopen) {
dest_file = new File(dest_path, "readwrite", orig_file.filetype);
dest_file.open();
var bytes_in_queue = orig_file.eof;
var batch_size;
while(bytes_in_queue > 0) {
batch_size = Math.min(bytes_in_queue, 10000);
dest_file.writebytes(orig_file.readbytes(batch_size));
bytes_in_queue -= batch_size;
}
}
orig_file.close();
dest_file.close();
}
An issue of this process is that if the destination folder does not exist, it will fail silently. That could be an improvement for future versions of Max.
EDIT: instead of using a [js] script, it seems to me that [node.script] is better suited for the job.
why not use shell and forget the trouble ?
or filemanager - jasch for mac
or msdpfs externals win/mac