Refactoring
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3c4996a747
commit
5824771012
1 changed files with 86 additions and 64 deletions
148
exif.py
148
exif.py
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@ -1,85 +1,107 @@
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import json
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import logging
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from datetime import datetime
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import PIL.ExifTags
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import pytz
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from PIL import Image, IptcImagePlugin, TiffImagePlugin
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logger = logging.getLogger(__name__)
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""" Required exif values """
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TAGS_EXIF = {
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0x9003: "DateTimeOriginal",
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0x829D: "FNumber",
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0x829A: "ExposureTime",
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0x8827: "ISOSpeedRatings",
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0x9204: "ExposureBiasValue",
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0x8822: "ExposureProgram",
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0x9207: "MeteringMode",
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0x920A: "FocalLength",
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0xA405: "FocalLengthIn35mmFilm",
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0x0110: "Model",
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0xA434: "LensModel",
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}
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""" Required iptc values """
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TAGS_IPTC = {
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(2, 25): "Keywords",
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(2, 55): "DateCreated",
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(2, 60): "TimeCreated",
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}
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class Exif:
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def __init__(self, filename: str):
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self.filename = filename
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self.exif = {}
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self._exif = {}
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self._iptc = {}
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self.data = {}
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""" Open image file """
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try:
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self.img = Image.open(self.filename)
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with Image.open(self.filename) as self.img:
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self.img.verify()
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self._readExif()
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self._readIptc()
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except:
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print("Error Couldn't open image: %s" % filename)
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except Exception:
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logger.exception('Could not open image: %s', self.filename)
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def _readExif(self):
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img = self.img._getexif()
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for (key, value) in img.items():
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if key in PIL.ExifTags.TAGS:
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if isinstance(value, TiffImagePlugin.IFDRational):
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value = float(value)
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elif isinstance(value, tuple):
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value = tuple(float(t) if isinstance(t, TiffImagePlugin.IFDRational) else t for t in value)
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elif isinstance(value, bytes):
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value = value.decode(errors="replace")
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self.exif[PIL.ExifTags.TAGS[key]] = value
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return self.exif
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def _readIptc(self):
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iptcTAGS = {
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(1, 90): 'CodedCharacterSet',
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(2, 0): 'RecordVersion',
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(2, 5): 'ObjectName',
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(2, 25): 'Keywords',
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(2, 55): 'DateCreated',
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(2, 60): 'TimeCreated',
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(2, 62): 'DigitizationDate',
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(2, 63): 'DigitizationTime',
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(2, 80): 'Byline',
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(2, 120): 'Caption',
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(2, 90): 'City',
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(2, 92): 'Sub location',
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(2, 95): 'Province State',
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(2, 100): 'Country Code',
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(2, 101): 'Country Name',
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""" Read exif tags """
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try:
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self._exif = {
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TAGS_EXIF[k]: v
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for k, v in self.img._getexif().items()
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if k in TAGS_EXIF
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}
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img = IptcImagePlugin.getiptcinfo(self.img)
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for (key, value) in img.items():
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decoded = iptcTAGS.get(key, str(key))
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for (key, value) in self._exif.items():
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if isinstance(value, TiffImagePlugin.IFDRational):
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self.data[key] = float(value)
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elif isinstance(value, tuple):
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self.data[key] = tuple(float(t) if isinstance(t, TiffImagePlugin.IFDRational) else t for t in value)
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elif isinstance(value, bytes):
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self.data[key] = value.decode('utf-8')
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else:
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self.data[key] = value
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except Exception:
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logger.warning('Could not read exif metadata from: %s', self.filename)
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""" Read iptc tags """
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try:
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self._iptc = {
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TAGS_IPTC[k]: v
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for k, v in IptcImagePlugin.getiptcinfo(self.img).items()
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if k in TAGS_IPTC
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}
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for (key, value) in self._iptc.items():
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if isinstance(value, list):
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self.exif[decoded] = [x.decode('utf-8') for x in value]
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self.data[key] = [x.decode('utf-8') for x in value]
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else:
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self.exif[decoded] = value.decode('utf-8')
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return self.exif
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self.data[key] = value.decode('utf-8')
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except Exception:
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logger.warning('Could not read iptc metadata from: %s', self.filename)
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def getValue(self, value):
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if value in self.exif.keys():
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return self.exif[value]
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def datetimeoriginal(self, timezone='UTC'):
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""" Return DateTimeOriginal with timezone """
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if 'DateTimeOriginal' in self.data:
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try:
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return datetime.strptime(self.data['DateTimeOriginal'], "%Y:%m:%d %H:%M:%S").astimezone(pytz.timezone(timezone))
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except ValueError as e:
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logger.warning('Could not parse date from: %s', self.filename)
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else:
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return {}
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return datetime.now(pytz.timezone(timezone))
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def getJson(self):
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return json.dumps(self.exif)
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def json(self):
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""" Return exif data in json format """
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return json.dumps(self.data)
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def getDic(self):
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return self.exif
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def keywords(self):
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""" Return Keywords list """
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if 'Keywords' not in self.data:
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return []
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if type(self.data['Keywords']) == list:
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return self.data['Keywords']
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return [self.data['Keywords']]
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def __str__(self):
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return self.filename
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xxx = Exif('./photo.jpg')
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print(xxx.getJson())
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print(xxx.getValue('Keywords'))
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print(xxx.getValue('DateTimeOriginal'))
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print(xxx.getDic())
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print(xxx)
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