Пример #1
0
def get_meta_data(lmaid):
    """Get the _meta.xml file with the concert description."""
    # relative path is concertid/concertid_meta.xml
    reader = MetaXMLHandler()
    hand = lma.archive_open("%s/%s_meta.xml" % (lmaid, lmaid))
    try:
        xml.sax.parse(hand, reader)
    finally:
        hand.close()
    return reader.getData()
Пример #2
0
def get_filelist_data(lmaid):
    """Get the _files.xml file with the song listing."""
    # relative path is concertid/concertid_files.xml
    reader = FileXMLHandler()
    hand = lma.archive_open("%s/%s_files.xml" % (lmaid, lmaid))
    try:
        xml.sax.parse(hand, reader)
    finally:
        hand.close()
    return reader.getData()
Пример #3
0
def download_one_file(concert, song, targetdir, progress_bar):
    """Download one file, updating callback as necessary."""

    # if there's an extra subdirectory, create it
    filename = os.path.join(targetdir, os.path.normpath(song['name']))
    (head, tail) = os.path.split(filename)
    if not os.path.isdir(head):
        os.mkdir(head)

    # make sure we don't already have this one
    filesize = int(song['size'])
    if os.path.exists(filename):
        # it's there--is it the right size?
        if os.stat(filename).st_size == filesize:
            return True
        # not right size, just remove it
        os.remove(filename)

    # don't use os.path.join here, because the name is for remote system
    downloaded = 0
    chksum = hashlib.md5()
    path = "%s/%s" % (concert.lmaid, song['name'])
    rhand = lma.archive_open(path)
    lhand = open(filename, "wb")
    try:
        data = rhand.read(BUFFER_SIZE)
        while len(data) > 0:
            downloaded += len(data)
            lhand.write(data)
            chksum.update(data)
            if not progress_bar.update(downloaded):
                break
            data = rhand.read(BUFFER_SIZE)
    except IOError:
        # nothing really to do, but we want to catch this anyway.
        pass
    finally:
        lhand.close()
        rhand.close()

    # now, make sure our checksum matches
    if chksum.hexdigest() == song['md5']:
        return True
    # we failed, remove the partial download
    os.remove(filename)
    return False