92 lines
2.4 KiB
Python
92 lines
2.4 KiB
Python
#!/usr/bin/python
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__version__ = '$Id: exif_redater.py 469 2008-03-05 06:09:01Z mn $'
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USAGE = "exif_redater.py\n\tredate .jpg/.jpeg files according to EXIF data"
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"""
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Iterates through a directory, reading the EXIF data from each jpg/jpeg file.
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Parses the date/time from EXIF data and if it differs from file
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modification date/time then changes file date/time
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author: Michal Niklas
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"""
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import os
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import os.path
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import sys
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import time
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import EXIF
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ALL_CNT = 0
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CHANGED_CNT = 0
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EXTENSIONS = ('.jpg', '.jpeg')
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def show_fdt(fdt):
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"""human readable format of file modification datetime"""
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return time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime(fdt))
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# 2005:10:20 23:22:28
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def exif_info2time(ts):
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"""changes EXIF date ('2005:10:20 23:22:28') to number of seconds since 1970-01-01"""
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tpl = time.strptime(ts, '%Y:%m:%d %H:%M:%S')
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return time.mktime(tpl)
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def redate_by_exif(fn):
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"""reads EXIF from jpg/jpeg and if file datetime differs from EXIF changes file date"""
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global ALL_CNT, CHANGED_CNT
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ALL_CNT += 1
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exif_time = None
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s = os.stat(fn)
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f = open(fn, 'rb')
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try:
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tags = EXIF.process_file(f)
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dt_value = "%s" % tags["Image DateTime"]
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file_time = s[8]
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exif_time = exif_info2time(dt_value)
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finally:
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f.close()
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if exif_time:
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secs_diff = file_time - exif_time
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MAX_DIFF = 130.0
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if secs_diff > MAX_DIFF or secs_diff < -MAX_DIFF:
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print "%s %s -> %s" % (fn, show_fdt(file_time), show_fdt(exif_time))
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os.utime(fn, (exif_time, exif_time))
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CHANGED_CNT += 1
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def process_dir(_, dir_name, files):
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"""looks for .jpg/.jpeg file in dir"""
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for fname in files:
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can_change = False
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fnl = fname.lower()
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for ext in EXTENSIONS:
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if fnl.endswith(ext):
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can_change = True
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break
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if can_change:
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fname = dir_name + '/' + fname
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if os.path.isfile(fname):
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try:
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redate_by_exif(fname)
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except:
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pass
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def main():
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os.path.walk('.', process_dir, None)
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print '\nChecked: %d\nChanged %d\n' % (ALL_CNT, CHANGED_CNT)
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if '--version' in sys.argv:
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print __version__
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else:
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if __name__ == '__main__':
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if '--help' in sys.argv:
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print USAGE
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else:
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main() |