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37 lines
1.4 KiB
Python
37 lines
1.4 KiB
Python
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__author__ = 'schmatz'
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from configuration import Configuration
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import urllib
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from dependency import Dependency
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class Downloader:
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def __init__(self,dependency):
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assert isinstance(dependency, Dependency)
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self.dependency = dependency
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@property
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def download_directory(self):
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raise NotImplementedError
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def download(self):
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raise NotImplementedError
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def download_file(self,url,filePath):
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urllib.urlretrieve(url,filePath,self.__progress_bar_reporthook)
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def decompress(self):
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raise NotImplementedError
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def check_download(self):
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raise NotImplementedError
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def __progress_bar_reporthook(self,blocknum,blocksize,totalsize):
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#http://stackoverflow.com/a/13895723/1928667
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#http://stackoverflow.com/a/3173331/1928667
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bars_to_display = 70
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amount_of_data_downloaded_so_far = blocknum * blocksize
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if totalsize > 0:
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progress_fraction = float(amount_of_data_downloaded_so_far) / float(totalsize)
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progress_percentage = progress_fraction * 1e2
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stringToDisplay = '\r[{0}] {1:.1f}%'.format('#'*int(bars_to_display*progress_fraction),progress_percentage)
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print stringToDisplay,
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if amount_of_data_downloaded_so_far >= totalsize:
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print "\n",
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else:
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stringToDisplay = '\r File size unknown. Read {0} bytes.'.format(amount_of_data_downloaded_so_far)
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print stringToDisplay,
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