68 lines
2.4 KiB
Python
68 lines
2.4 KiB
Python
import json
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import logging
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import os
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import subprocess
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from typing import Dict, Union, Set
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from . import abstract
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# Make pyflakes happy
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assert Set
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class ExiftoolParser(abstract.AbstractParser):
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""" Exiftool is often the easiest way to get all the metadata
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from a import file, hence why several parsers are re-using its `get_meta`
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method.
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"""
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meta_whitelist = set() # type: Set[str]
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def get_meta(self) -> Dict[str, Union[str, dict]]:
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out = subprocess.check_output([_get_exiftool_path(), '-json', self.filename])
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meta = json.loads(out.decode('utf-8'))[0]
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for key in self.meta_whitelist:
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meta.pop(key, None)
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return meta
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def _lightweight_cleanup(self):
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if os.path.exists(self.output_filename):
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try:
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# exiftool can't force output to existing files
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os.remove(self.output_filename)
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except OSError as e: # pragma: no cover
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logging.error("The output file %s is already existing and \
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can't be overwritten: %s.", self.filename, e)
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return False
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# Note: '-All=' must be followed by a known exiftool option.
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# Also, '-CommonIFD0' is needed for .tiff files
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cmd = [_get_exiftool_path(),
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'-all=', # remove metadata
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'-adobe=', # remove adobe-specific metadata
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'-exif:all=', # remove all exif metadata
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'-Time:All=', # remove all timestamps
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'-quiet', # don't show useless logs
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'-CommonIFD0=', # remove IFD0 metadata
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'-o', self.output_filename,
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self.filename]
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try:
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subprocess.check_call(cmd)
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except subprocess.CalledProcessError as e: # pragma: no cover
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logging.error("Something went wrong during the processing of %s: %s", self.filename, e)
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return False
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return True
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def _get_exiftool_path() -> str: # pragma: no cover
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exiftool_path = '/usr/bin/exiftool'
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if os.path.isfile(exiftool_path):
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if os.access(exiftool_path, os.X_OK):
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return exiftool_path
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# ArchLinux
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exiftool_path = '/usr/bin/vendor_perl/exiftool'
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if os.path.isfile(exiftool_path):
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if os.access(exiftool_path, os.X_OK):
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return exiftool_path
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raise RuntimeError("Unable to find exiftool")
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