ordigi/dozo/filesystem.py

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"""
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General file system methods.
"""
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from builtins import object
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import filecmp
import hashlib
import logging
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import os
import pathlib
import re
import sys
import shutil
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import time
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from datetime import datetime, timedelta
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from dozo import constants
from dozo import geolocation
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from dozo.media.media import get_media_class, get_all_subclasses
from dozo.media.photo import CompareImages
from dozo.summary import Summary
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class FileSystem(object):
"""A class for interacting with the file system."""
def __init__(self, cache=False, day_begins=0, dry_run=False, exclude_regex_list=set(),
filter_by_ext=(), logger=logging.getLogger(), max_deep=None,
mode='copy', path_format=None):
self.cache = cache
self.day_begins = day_begins
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self.dry_run = dry_run
self.exclude_regex_list = exclude_regex_list
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self.filter_by_ext = filter_by_ext
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self.items = self.get_items()
self.logger = logger
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self.max_deep = max_deep
self.mode = mode
# TODO have to be removed
if path_format:
self.path_format = path_format
else:
self.path_format = os.path.join(constants.default_path,
constants.default_name)
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self.summary = Summary()
self.whitespace_regex = '[ \t\n\r\f\v]+'
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def create_directory(self, directory_path):
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"""Create a directory if it does not already exist.
:param str directory_name: A fully qualified path of the
to create.
:returns: bool
"""
try:
if os.path.exists(directory_path):
return True
else:
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if not self.dry_run:
os.makedirs(directory_path)
self.logger.info(f'Create {directory_path}')
return True
except OSError:
# OSError is thrown for cases like no permission
pass
return False
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def get_items(self):
return {
'album': '{album}',
'basename': '{basename}',
'camera_make': '{camera_make}',
'camera_model': '{camera_model}',
'city': '{city}',
'custom': '{".*"}',
'country': '{country}',
# 'folder': '{folder[<>]?[-+]?[1-9]?}',
'ext': '{ext}',
'folder': '{folder}',
'folders': r'{folders(\[[0-9:]{0,3}\])?}',
'location': '{location}',
'name': '{name}',
'original_name': '{original_name}',
'state': '{state}',
'title': '{title}',
'date': '{(%[a-zA-Z][^a-zA-Z]*){1,8}}' # search for date format string
}
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def walklevel(self, src_path, maxlevel=None):
"""
Walk into input directory recursively until desired maxlevel
source: https://stackoverflow.com/questions/229186/os-walk-without-digging-into-directories-below
"""
src_path = src_path.rstrip(os.path.sep)
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if not os.path.isdir(src_path):
return None
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num_sep = src_path.count(os.path.sep)
for root, dirs, files in os.walk(src_path):
level = root.count(os.path.sep) - num_sep
yield root, dirs, files, level
if maxlevel is not None and level >= maxlevel:
del dirs[:]
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def get_all_files(self, path, extensions=False, exclude_regex_list=set()):
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"""Recursively get all files which match a path and extension.
:param str path string: Path to start recursive file listing
:param tuple(str) extensions: File extensions to include (whitelist)
:returns: generator
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"""
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if self.filter_by_ext != () and not extensions:
# Filtering files by extensions.
if '%media' in self.filter_by_ext:
extensions = set()
subclasses = get_all_subclasses()
for cls in subclasses:
extensions.update(cls.extensions)
else:
extensions = self.filter_by_ext
# Create a list of compiled regular expressions to match against the file path
compiled_regex_list = [re.compile(regex) for regex in exclude_regex_list]
for dirname, dirnames, filenames in os.walk(path):
if dirname == os.path.join(path, '.dozo'):
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continue
for filename in filenames:
# If file extension is in `extensions`
# And if file path is not in exclude regexes
# Then append to the list
filename_path = os.path.join(dirname, filename)
if (
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extensions == False
or os.path.splitext(filename)[1][1:].lower() in extensions
and not self.should_exclude(filename_path, compiled_regex_list, False)
):
yield filename_path
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def check_for_early_morning_photos(self, date):
"""check for early hour photos to be grouped with previous day"""
if date.hour < self.day_begins:
self.logger.info('moving this photo to the previous day for\
classification purposes (day_begins=' + str(self.day_begins) + ')')
date = date - timedelta(hours=date.hour+1) # push it to the day before for classificiation purposes
return date
def get_location_part(self, mask, part, place_name):
"""Takes a mask for a location and interpolates the actual place names.
Given these parameters here are the outputs.
mask = 'city'
part = 'city-random'
place_name = {'city': u'Sunnyvale'}
return 'Sunnyvale'
mask = 'location'
part = 'location'
place_name = {'default': u'Sunnyvale', 'city': u'Sunnyvale'}
return 'Sunnyvale'
:returns: str
"""
folder_name = part
if(mask in place_name):
replace_target = mask
replace_with = place_name[mask]
else:
replace_target = part
replace_with = ''
folder_name = folder_name.replace(
replace_target,
replace_with,
)
return folder_name
def get_part(self, item, mask, metadata, db, subdirs):
"""Parse a specific folder's name given a mask and metadata.
:param item: Name of the item as defined in the path (i.e. date from %date)
:param mask: Mask representing the template for the path (i.e. %city %state
:param metadata: Metadata dictionary.
:returns: str
"""
# Each item has its own custom logic and we evaluate a single item and return
# the evaluated string.
part = ''
if item == 'basename':
part = os.path.basename(metadata['base_name'])
elif item == 'name':
# Remove date prefix added to the name.
part = metadata['base_name']
for i, rx in self.match_date_from_string(metadata['base_name']):
part = re.sub(rx, '', part)
elif item == 'date':
date = self.get_date_taken(metadata)
# early morning photos can be grouped with previous day
date = self.check_for_early_morning_photos(date)
if date is not None:
part = date.strftime(mask)
elif item in ('location', 'city', 'state', 'country'):
place_name = geolocation.place_name(
metadata['latitude'],
metadata['longitude'],
db,
self.cache,
self.logger
)
if item == 'location':
mask = 'default'
part = self.get_location_part(mask, item, place_name)
elif item == 'folder':
part = os.path.basename(subdirs)
elif item == 'folders':
folders = pathlib.Path(subdirs).parts
folders = eval(mask)
part = os.path.join(*folders)
elif item in ('album','camera_make', 'camera_model', 'ext',
'title'):
if metadata[item]:
part = metadata[item]
elif item in ('original_name'):
# First we check if we have metadata['original_name'].
# We have to do this for backwards compatibility because
# we original did not store this back into EXIF.
if metadata[item]:
part = os.path.splitext(metadata['original_name'])[0]
elif item in 'custom':
# Fallback string
part = mask[1:-1]
return part
def get_path(self, metadata, db, subdirs='', whitespace_sub='_'):
"""path_format: {%Y-%d-%m}/%u{city}/{album}
Returns file path.
:returns: string"""
path_format = self.path_format
path = []
path_parts = path_format.split('/')
for path_part in path_parts:
this_parts = path_part.split('|')
# p = []
for this_part in this_parts:
# parts = ''
for item, regex in self.items.items():
matched = re.search(regex, this_part)
if matched:
# parts = re.split(mask, this_part)
# parts = this_part.split('%')[1:]
part = self.get_part(item, matched.group()[1:-1], metadata, db,
subdirs)
part = part.strip()
# Capitalization
u_regex = '%u' + regex
l_regex = '%l' + regex
if re.search(u_regex, this_part):
this_part = re.sub(u_regex, part.upper(), this_part)
elif re.search(l_regex, this_part):
this_part = re.sub(l_regex, part.lower(), this_part)
else:
this_part = re.sub(regex, part, this_part)
if this_part:
# Check if all masks are substituted
if True in [c in this_part for c in '{}']:
self.logger.error(f'Format path part invalid: \
{this_part}')
sys.exit(1)
path.append(this_part.strip())
# We break as soon as we have a value to append
break
# Else we continue for fallbacks
if(len(path[-1]) == 0):
path[-1] = metadata['base_name']
path_string = os.path.join(*path)
if whitespace_sub != ' ':
# Lastly we want to sanitize the name
path_string = re.sub(self.whitespace_regex, whitespace_sub, path_string)
return path_string
def match_date_from_string(self, string, user_regex=None):
if user_regex is not None:
matches = re.findall(user_regex, string)
else:
regex = {
# regex to match date format type %Y%m%d, %y%m%d, %d%m%Y,
# etc...
'a': re.compile(
r'.*[_-]?(?P<year>\d{4})[_-]?(?P<month>\d{2})[_-]?(?P<day>\d{2})[_-]?(?P<hour>\d{2})[_-]?(?P<minute>\d{2})[_-]?(?P<second>\d{2})'),
'b': re.compile (
r'[-_./](?P<year>\d{4})[-_.]?(?P<month>\d{2})[-_.]?(?P<day>\d{2})[-_./]'),
# not very accurate
'c': re.compile (
r'[-_./](?P<year>\d{2})[-_.]?(?P<month>\d{2})[-_.]?(?P<day>\d{2})[-_./]'),
'd': re.compile (
r'[-_./](?P<day>\d{2})[-_.](?P<month>\d{2})[-_.](?P<year>\d{4})[-_./]')
}
for i, rx in regex.items():
yield i, rx
def get_date_from_string(self, string, user_regex=None):
# If missing datetime from EXIF data check if filename is in datetime format.
# For this use a user provided regex if possible.
# Otherwise assume a filename such as IMG_20160915_123456.jpg as default.
matches = []
for i, rx in self.match_date_from_string(string, user_regex):
match = re.findall(rx, string)
if match != []:
if i == 'c':
match = [('20' + match[0][0], match[0][1], match[0][2])]
elif i == 'd':
# reorder items
match = [(match[0][2], match[0][1], match[0][0])]
# matches = match + matches
if len(match) != 1:
# The time string is not uniq
continue
matches.append((match[0], rx))
# We want only the first match for the moment
break
# check if there is only one result
if len(set(matches)) == 1:
try:
# Convert str to int
date_object = tuple(map(int, matches[0][0]))
time = False
if len(date_object) > 3:
time = True
date = datetime(*date_object)
except (KeyError, ValueError):
return None
return date
return None
def get_date_taken(self, metadata):
'''
Get the date taken from metadata or filename
:returns: datetime or None.
'''
if metadata is None:
return None
basename = metadata['base_name']
date_original = metadata['date_original']
if metadata['original_name'] is not None:
date_filename = self.get_date_from_string(metadata['original_name'])
else:
date_filename = self.get_date_from_string(basename)
date_created = metadata['date_created']
if metadata['date_original'] is not None:
if (date_filename is not None and
date_filename != date_original):
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self.logger.warn(f"{basename} time mark is different from {date_original}")
# TODO ask for keep date taken, filename time, or neither
return metadata['date_original']
elif True:
if date_filename is not None:
if date_created is not None and date_filename > date_created:
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self.logger.warn(f"{basename} time mark is more recent than {date_created}")
return date_filename
if True:
# TODO warm and ask for confirmation
if date_created is not None:
return date_created
elif metadata['date_modified'] is not None:
return metadata['date_modified']
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def checksum(self, file_path, blocksize=65536):
"""Create a hash value for the given file.
See http://stackoverflow.com/a/3431835/1318758.
:param str file_path: Path to the file to create a hash for.
:param int blocksize: Read blocks of this size from the file when
creating the hash.
:returns: str or None
"""
hasher = hashlib.sha256()
with open(file_path, 'rb') as f:
buf = f.read(blocksize)
while len(buf) > 0:
hasher.update(buf)
buf = f.read(blocksize)
return hasher.hexdigest()
return None
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def checkcomp(self, dest_path, src_checksum):
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"""Check file.
"""
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# src_checksum = self.checksum(src_path)
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if self.dry_run:
return src_checksum
dest_checksum = self.checksum(dest_path)
if dest_checksum != src_checksum:
self.logger.info(f'Source checksum and destination checksum are not the same')
return False
return src_checksum
def sort_file(self, src_path, dest_path, remove_duplicates=True):
'''Copy or move file to dest_path.'''
mode = self.mode
dry_run = self.dry_run
# check for collisions
if(src_path == dest_path):
self.logger.info(f'File {dest_path} already sorted')
return True
if os.path.isfile(dest_path):
self.logger.info(f'File {dest_path} already exist')
if remove_duplicates:
if filecmp.cmp(src_path, dest_path):
self.logger.info(f'File in source and destination are identical. Duplicate will be ignored.')
if(mode == 'move'):
if not dry_run:
os.remove(src_path)
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self.logger.info(f'remove: {src_path}')
return True
else: # name is same, but file is different
self.logger.info(f'File in source and destination are different.')
return False
else:
return False
else:
if(mode == 'move'):
if not dry_run:
# Move the processed file into the destination directory
shutil.move(src_path, dest_path)
self.logger.info(f'move: {src_path} -> {dest_path}')
elif mode == 'copy':
if not dry_run:
shutil.copy2(src_path, dest_path)
self.logger.info(f'copy: {src_path} -> {dest_path}')
return True
return False
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def check_file(self, src_path, dest_path, src_checksum, db):
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# Check if file remain the same
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checksum = self.checkcomp(dest_path, src_checksum)
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has_errors = False
if checksum:
if not self.dry_run:
db.add_hash(checksum, dest_path)
db.update_hash_db()
if dest_path:
self.logger.info(f'{src_path} -> {dest_path}')
self.summary.append((src_path, dest_path))
else:
self.logger.error(f'Files {src_path} and {dest_path} are not identical')
# sys.exit(1)
self.summary.append((src_path, False))
has_errors = True
return self.summary, has_errors
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def get_files_in_path(self, path, extensions=False):
"""Recursively get files which match a path and extension.
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:param str path string: Path to start recursive file listing
:param tuple(str) extensions: File extensions to include (whitelist)
:returns: file_path, subdirs
"""
if self.filter_by_ext != () and not extensions:
# Filtering files by extensions.
if '%media' in self.filter_by_ext:
extensions = set()
subclasses = get_all_subclasses()
for cls in subclasses:
extensions.update(cls.extensions)
else:
extensions = self.filter_by_ext
file_list = set()
if os.path.isfile(path):
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if not self.should_exclude(path, self.exclude_regex_list, True):
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file_list.add((path, ''))
# Create a list of compiled regular expressions to match against the file path
compiled_regex_list = [re.compile(regex) for regex in self.exclude_regex_list]
subdirs = ''
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for dirname, dirnames, filenames, level in self.walklevel(path,
self.max_deep):
if dirname == os.path.join(path, '.dozo'):
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continue
subdirs = os.path.join(subdirs, os.path.basename(dirname))
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for filename in filenames:
# If file extension is in `extensions`
# And if file path is not in exclude regexes
# Then append to the list
filename_path = os.path.join(dirname, filename)
if (
extensions == False
or os.path.splitext(filename)[1][1:].lower() in extensions
and not self.should_exclude(filename_path, compiled_regex_list, False)
):
file_list.add((filename_path, subdirs))
return file_list
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def sort_files(self, paths, destination, db, remove_duplicates=False,
ignore_tags=set()):
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"""
Sort files into appropriate folder
"""
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has_errors = False
for path in paths:
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# some error checking
if not os.path.exists(path):
self.logger.error(f'Directory {path} does not exist')
path = os.path.expanduser(path)
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conflict_file_list = set()
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for src_path, subdirs in self.get_files_in_path(path):
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# Process files
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src_checksum = self.checksum(src_path)
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media = get_media_class(src_path, ignore_tags, self.logger)
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if media:
metadata = media.get_metadata()
# Get the destination path according to metadata
file_path = self.get_path(metadata, db, subdirs=subdirs)
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else:
# Keep same directory structure
file_path = os.path.relpath(src_path, path)
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dest_directory = os.path.join(destination,
os.path.dirname(file_path))
dest_path = os.path.join(destination, file_path)
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self.create_directory(dest_directory)
result = self.sort_file(src_path, dest_path, remove_duplicates)
if result:
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self.summary, has_errors = self.check_file(src_path,
dest_path, src_checksum, db)
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else:
# There is conflict files
conflict_file_list.add((src_path, dest_path))
for src_path, dest_path in conflict_file_list:
# Try to sort the file
result = self.sort_file(src_path, dest_path, remove_duplicates)
if result:
conflict_file_list.remove((src_path, dest_path))
else:
n = 1
while not result:
# Add appendix to the name
pre, ext = os.path.splitext(dest_path)
dest_path = pre + '_' + str(n) + ext
result = self.sort_file(src_path, dest_path, remove_duplicates)
if n > 100:
self.logger.error(f'{self.mode}: to many append for {dest_path}...')
break
self.logger.info(f'Same name already exists...renaming to: {dest_path}')
if result:
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self.summary, has_errors = self.check_file(src_path,
dest_path, src_checksum, db)
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else:
self.summary.append((src_path, False))
has_errors = True
return self.summary, has_errors
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def check_path(self, path):
path = os.path.abspath(os.path.expanduser(path))
# some error checking
if not os.path.exists(path):
self.logger.error(f'Directory {path} does not exist')
sys.exit(1)
return path
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def set_hash(self, result, src_path, dest_path, src_checksum, db):
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if result:
# Check if file remain the same
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result = self.checkcomp(dest_path, src_checksum)
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has_errors = False
if result:
if not self.dry_run:
db.add_hash(checksum, dest_path)
db.update_hash_db()
if dest_path:
self.logger.info(f'{src_path} -> {dest_path}')
self.summary.append((src_path, dest_path))
else:
self.logger.error(f'Files {src_path} and {dest_path} are not identical')
# sys.exit(1)
self.summary.append((src_path, False))
has_errors = True
else:
self.summary.append((src_path, False))
has_errors = True
return has_errors
def move_file(self, img_path, dest_path, checksum, db):
if not self.dry_run:
try:
shutil.move(img_path, dest_path)
except OSError as error:
self.logger.error(error)
self.logger.info(f'move: {img_path} -> {dest_path}')
return self.set_hash(True, img_path, dest_path, checksum, db)
def sort_similar_images(self, path, db, similarity=80):
has_errors = False
path = self.check_path(path)
for dirname, dirnames, filenames, level in self.walklevel(path, None):
if dirname == os.path.join(path, '.dozo'):
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continue
if dirname.find('similar_to') == 0:
continue
file_paths = set()
for filename in filenames:
file_paths.add(os.path.join(dirname, filename))
ci = CompareImages(file_paths, logger=self.logger)
images = set([ i for i in ci.get_images() ])
for image in images:
if not os.path.isfile(image):
continue
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checksum1 = self.checksum(image)
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# Process files
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# media = get_media_class(src_path, False, self.logger)
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# TODO compare metadata
# if media:
# metadata = media.get_metadata()
similar = False
moved_imgs = set()
for img_path in ci.find_similar(image, similarity):
similar = True
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checksum2 = self.checksum(img_path)
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# move image into directory
name = os.path.splitext(os.path.basename(image))[0]
directory_name = 'similar_to_' + name
dest_directory = os.path.join(os.path.dirname(img_path),
directory_name)
dest_path = os.path.join(dest_directory, os.path.basename(img_path))
result = self.create_directory(dest_directory)
# Move the simlars file into the destination directory
if result:
result = self.move_file(img_path, dest_path, checksum2, db)
moved_imgs.add(img_path)
if not result:
has_errors = True
else:
has_errors = True
if similar:
dest_path = os.path.join(dest_directory,
os.path.basename(image))
result = self.move_file(image, dest_path, checksum1, db)
moved_imgs.add(image)
if not result:
has_errors = True
for moved_img in moved_imgs:
ci.file_paths.remove(moved_img)
return self.summary, has_errors
def revert_compare(self, path, db):
has_errors = False
path = self.check_path(path)
for dirname, dirnames, filenames, level in self.walklevel(path, None):
if dirname == os.path.join(path, '.dozo'):
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continue
if dirname.find('similar_to') == 0:
continue
for subdir in dirnames:
if subdir.find('similar_to') == 0:
file_names = os.listdir(os.path.abspath(os.path.join(dirname, subdir)))
for file_name in file_names:
# move file to initial folder
img_path = os.path.join(dirname, subdir, file_name)
if os.path.isdir(img_path):
continue
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checksum = self.checksum(img_path)
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dest_path = os.path.join(dirname, os.path.basename(img_path))
result = self.move_file(img_path, dest_path, checksum, db)
if not result:
has_errors = True
# remove directory
try:
os.rmdir(os.path.join (dirname, subdir))
except OSError as error:
self.logger.error(error)
return self.summary, has_errors
def set_utime_from_metadata(self, date_taken, file_path):
""" Set the modification time on the file based on the file name.
2016-10-09 23:12:16 +02:00
"""
# Initialize date taken to what's returned from the metadata function.
os.utime(file_path, (int(datetime.now().timestamp()), int(date_taken.timestamp())))
def should_exclude(self, path, regex_list=set(), needs_compiled=False):
if(len(regex_list) == 0):
return False
if(needs_compiled):
compiled_list = []
for regex in regex_list:
compiled_list.append(re.compile(regex))
regex_list = compiled_list
return any(regex.search(path) for regex in regex_list)