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https://github.com/gryf/slack-backup.git
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gryf
b2048b03e0
Till now, if we download certain files (like those attached to the conversation) and we already have the file with the same name, number in format '%03d' was added just before extension. That way there could be possibility, that the very same file will be downloaded and stored multiple times, like: file.png file.001.png file.002.png ... This commit prevents that by adding comparison between files we already have and file which is downloaded from slack. Adding another file with additional number will only have place when stored file and downloaded have different content.
45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
"""
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Some utils functions. Jsut to not copypaste the code around
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"""
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import errno
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import os
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import logging
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import tempfile
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import hashlib
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def makedirs(path):
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"""Create if not exists - version of os.makedirs."""
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try:
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os.makedirs(path)
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except OSError as err:
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if err.errno != errno.EEXIST:
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logging.error("Cannot create `%s'.", path)
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raise
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else:
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if os.path.exists(path) and not os.path.isdir(path):
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logging.error("Cannot create `%s'. There is some file on the "
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"way; cannot proceed.", path)
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raise
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def get_temp_name():
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"""Return temporary file name"""
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fdesc, fname = tempfile.mkstemp()
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os.close(fdesc)
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return fname
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def same_files(file1, file2):
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"""
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Compare files by calculating hash for each of them. Return True if hash is
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identical, False otherwise
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"""
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with open(file1, 'rb') as fobj:
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hash1 = hashlib.sha256(fobj.read())
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with open(file2, 'rb') as fobj:
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hash2 = hashlib.sha256(fobj.read())
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return hash1.hexdigest() == hash2.hexdigest()
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