201 lines
7.1 KiB
Python
201 lines
7.1 KiB
Python
"""
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Author: Jaisen Mathai <jaisen@jmathai.com>
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Video package that handles all video operations
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"""
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import os
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import re
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import shutil
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import time
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from elodie import geolocation
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from elodie import constants
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from elodie.localstorage import Db
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"""
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General file system methods
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"""
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class FileSystem:
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"""
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Create a directory if it does not already exist..
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@param, directory_name, string, A fully qualified path of the directory to create.
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"""
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def create_directory(self, directory_path):
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if not os.path.exists(directory_path):
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os.makedirs(directory_path)
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"""
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Delete a directory only if it's empty.
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Instead of checking first using `len([name for name in os.listdir(directory_path)]) == 0`
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we catch the OSError exception.
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@param, directory_name, string, A fully qualified path of the directory to delete.
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"""
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def delete_directory_if_empty(self, directory_path):
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try:
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os.rmdir(directory_path)
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except OSError:
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pass
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"""
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Recursively get all files which match a path and extension.
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@param, path, string, Path to start recursive file listing
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@param, extensions, tuple, File extensions to include (whitelist)
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"""
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def get_all_files(self, path, extensions=None):
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files = []
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for dirname, dirnames, filenames in os.walk(path):
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# print path to all filenames.
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for filename in filenames:
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if(extensions == None or filename.lower().endswith(extensions)):
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files.append('%s/%s' % (dirname, filename))
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return files
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"""
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Get the current working directory
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@returns, string
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"""
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def get_current_directory(self):
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return os.getcwd()
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"""
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Generate file name for a photo or video using its metadata.
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We use an ISO8601-like format for the file name prefix.
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Instead of colons as the separator for hours, minutes and seconds we use a hyphen.
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https://en.wikipedia.org/wiki/ISO_8601#General_principles
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@param, media, Photo|Video, A Photo or Video instance
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@returns, string or None for non-photo or non-videos
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"""
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def get_file_name(self, media):
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if(not media.is_valid()):
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return None
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metadata = media.get_metadata()
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if(metadata == None):
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return None
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# If the file has EXIF title we use that in the file name (i.e. my-favorite-photo-img_1234.jpg)
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# We want to remove the date prefix we add to the name.
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# This helps when re-running the program on file which were already processed.
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base_name = re.sub('^\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2}-', '', metadata['base_name'])
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if(len(base_name) == 0):
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base_name = metadata['base_name']
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if('title' in metadata and metadata['title'] is not None and len(metadata['title']) > 0):
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title_sanitized = re.sub('\W+', '-', metadata['title'].strip())
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base_name = base_name.replace('-%s' % title_sanitized, '')
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base_name = '%s-%s' % (base_name, title_sanitized)
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file_name = '%s-%s.%s' % (time.strftime('%Y-%m-%d_%H-%M-%S', metadata['date_taken']), base_name, metadata['extension'])
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return file_name.lower()
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"""
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Get date based folder name.
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@param, time_obj, time, Time object to be used to determine folder name.
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@returns, string
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"""
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def get_folder_name_by_date(self, time_obj):
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return time.strftime('%Y-%m-%b', time_obj)
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"""
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Get folder path by various parameters.
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@param, time_obj, time, Time object to be used to determine folder name.
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@returns, string
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"""
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def get_folder_path(self, metadata):
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path = []
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if(metadata['date_taken'] is not None):
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path.append(time.strftime('%Y-%m-%b', metadata['date_taken']))
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if(metadata['album'] is not None):
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path.append(metadata['album'])
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elif(metadata['latitude'] is not None and metadata['longitude'] is not None):
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place_name = geolocation.place_name(metadata['latitude'], metadata['longitude'])
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if(place_name is not None):
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path.append(place_name)
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# if we don't have a 2nd level directory we use 'Unknown Location'
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if(len(path) < 2):
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path.append('Unknown Location')
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#return '/'.join(path[::-1])
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return '/'.join(path)
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def process_file(self, _file, destination, media, **kwargs):
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move = False
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if('move' in kwargs):
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move = kwargs['move']
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allowDuplicate = False
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if('allowDuplicate' in kwargs):
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allowDuplicate = kwargs['allowDuplicate']
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metadata = media.get_metadata()
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directory_name = self.get_folder_path(metadata)
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dest_directory = '%s/%s' % (destination, directory_name)
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file_name = self.get_file_name(media)
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dest_path = '%s/%s' % (dest_directory, file_name)
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db = Db()
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checksum = db.checksum(_file)
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if(checksum == None):
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if(constants.debug == True):
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print 'Could not get checksum for %s. Skipping...' % _file
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return
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# If duplicates are not allowed and this hash exists in the db then we return
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if(allowDuplicate == False and db.check_hash(checksum) == True):
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if(constants.debug == True):
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print '%s already exists at %s. Skipping...' % (_file, db.get_hash(checksum))
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return
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self.create_directory(dest_directory)
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if(move == True):
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stat = os.stat(_file)
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shutil.move(_file, dest_path)
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os.utime(dest_path, (stat.st_atime, stat.st_mtime))
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else:
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shutil.copy2(_file, dest_path)
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db.add_hash(checksum, dest_path)
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db.update_hash_db()
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return dest_path
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"""
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Set the modification time on the file based on the file path.
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Noop if the path doesn't match the format YYYY-MM/DD-IMG_0001.JPG.
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"""
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def set_date_from_path_video(self, video):
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date_taken = None
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video_file_path = video.get_file_path()
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# Initialize date taken to what's returned from the metadata function.
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# If the folder and file name follow a time format of YYYY-MM/DD-IMG_0001.JPG then we override the date_taken
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(year, month, day) = [None] * 3
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directory = os.path.dirname(video_file_path)
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# If the directory matches we get back a match with groups() = (year, month)
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year_month_match = re.search('(\d{4})-(\d{2})', directory)
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if(year_month_match is not None):
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(year, month) = year_month_match.groups()
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day_match = re.search('^(\d{2})', os.path.basename(video.get_file_path()))
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if(day_match is not None):
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day = day_match.group(1)
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# check if the file system path indicated a date and if so we override the metadata value
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if(year is not None and month is not None):
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if(day is not None):
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date_taken = time.strptime('{}-{}-{}'.format(year, month, day), '%Y-%m-%d')
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else:
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date_taken = time.strptime('{}-{}'.format(year, month), '%Y-%m')
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os.utime(video_file_path, (time.time(), time.mktime(date_taken)))
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