"--all-formats" overwrite existing files

[andreabravetti]

"--all-formats" overwrite existing files and keep only one file per extension even if more than one exists.

Example:

[andrea@sibilla ~]$ youtube-dl --all-formats http://www.youtube.com/watch?v=00000000000

[youtube] Setting language
[youtube] 00000000000: Downloading video webpage
[youtube] 00000000000: Downloading video info webpage
[youtube] 00000000000: Extracting video information
[download] Destination: 00000000000.webm
[download] 100.0% of 3.71M at 779.58k/s ETA 00:00
[download] Destination: 00000000000.flv
[download] 100.0% of 3.03M at 257.87k/s ETA 00:00
[download] Destination: 00000000000.webm
[download] 100.0% of 2.80M at 771.26k/s ETA 00:00
[download] Destination: 00000000000.flv
[download] 100.0% of 2.68M at 222.57k/s ETA 00:00
[download] Destination: 00000000000.mp4
[download] 100.0% of 2.24M at 743.58k/s ETA 00:00
[download] Destination: 00000000000.flv
[download] 100.0% of 1.92M at 162.52k/s ETA 00:00

[andrea@sibilla ~]$ ls -l

-rw-rw-r--. 1 andrea andrea 3173446 16 set 2011 00000000000.flv
-rw-rw-r--. 1 andrea andrea 2347362 16 set 2011 00000000000.mp4
-rw-rw-r--. 1 andrea andrea 3886456 16 set 2011 00000000000.webm

It should be:

[andrea@sibilla ~]$ youtube-dl --all-formats http://www.youtube.com/watch?v=00000000000

[youtube] Setting language
[youtube] 00000000000: Downloading video webpage
[youtube] 00000000000: Downloading video info webpage
[youtube] 00000000000: Extracting video information
[download] Destination: 00000000000.webm
[download] 100.0% of 3.71M at 779.58k/s ETA 00:00
[download] Destination: 00000000000.flv
[download] 100.0% of 3.03M at 257.87k/s ETA 00:00
[download] Destination: 00000000000-1.webm
[download] 100.0% of 2.80M at 771.26k/s ETA 00:00
[download] Destination: 00000000000-1.flv
[download] 100.0% of 2.68M at 222.57k/s ETA 00:00
[download] Destination: 00000000000.mp4
[download] 100.0% of 2.24M at 743.58k/s ETA 00:00
[download] Destination: 00000000000-2.flv
[download] 100.0% of 1.92M at 162.52k/s ETA 00:00

[andrea@sibilla ~]$ ls -l

-rw-rw-r--. 1 andrea andrea 2807035 16 set 2011 00000000000-1.flv
-rw-rw-r--. 1 andrea andrea 2939698 16 set 2011 00000000000-1.webm
-rw-rw-r--. 1 andrea andrea 2008777 16 set 2011 00000000000-2.flv
-rw-rw-r--. 1 andrea andrea 3173446 16 set 2011 00000000000.flv
-rw-rw-r--. 1 andrea andrea 2347362 16 set 2011 00000000000.mp4
-rw-rw-r--. 1 andrea andrea 3886456 16 set 2011 00000000000.webm

Please add this code on top of sanitize_open():

# do not overwrite existing files
if filename != u'-':
    if filename.endswith(u'.part'):
        _addpart = u'.part'
        _name, _ext = os.path.splitext(filename[:-len(u'.part')])
        filename = filename[:-len(u'.part')]
    else:
        _addpart = u''
        _name, _ext = os.path.splitext(filename)
    _count = 0
    while os.path.isfile(filename):
        _count += 1
        filename = "%s-%s%s" % (_name, _count, _ext)
    filename = "%s%s" % (filename,_addpart)

[andreabravetti]

created as a pull request (#351)