Files
osxphotos/osxphotos/utils.py
Pablo 'merKur' Kohan 8c10b61e90 Fix findfiles not to fail on missing/invalid dir
Was failing on --dry-run and tests.
Added unit-test.
2020-07-23 15:16:40 +03:00

355 lines
11 KiB
Python

import fnmatch
import glob
import logging
import os
import os.path
import pathlib
import platform
import re
import sqlite3
import subprocess
import sys
import tempfile
import urllib.parse
from plistlib import load as plistload
import CoreFoundation
import CoreServices
import objc
from Foundation import *
from .fileutil import FileUtil
_DEBUG = False
logging.basicConfig(
level=logging.DEBUG,
format="%(asctime)s - %(levelname)s - %(filename)s - %(lineno)d - %(message)s",
)
if not _DEBUG:
logging.disable(logging.DEBUG)
def _get_logger():
"""Used only for testing
Returns:
logging.Logger object -- logging.Logger object for osxphotos
"""
return logging.Logger(__name__)
def _set_debug(debug):
""" Enable or disable debug logging """
global _DEBUG
_DEBUG = debug
if debug:
logging.disable(logging.NOTSET)
else:
logging.disable(logging.DEBUG)
def _debug():
""" returns True if debugging turned on (via _set_debug), otherwise, false """
return _DEBUG
def _get_os_version():
# returns tuple containing OS version
# e.g. 10.13.6 = (10, 13, 6)
version = platform.mac_ver()[0].split(".")
if len(version) == 2:
(ver, major) = version
minor = "0"
elif len(version) == 3:
(ver, major, minor) = version
else:
raise (
ValueError(
f"Could not parse version string: {platform.mac_ver()} {version}"
)
)
return (ver, major, minor)
def _check_file_exists(filename):
""" returns true if file exists and is not a directory
otherwise returns false """
filename = os.path.abspath(filename)
return os.path.exists(filename) and not os.path.isdir(filename)
def _get_resource_loc(model_id):
""" returns folder_id and file_id needed to find location of edited photo """
""" and live photos for version <= Photos 4.0 """
# determine folder where Photos stores edited version
# edited images are stored in:
# Photos Library.photoslibrary/resources/media/version/XX/00/fullsizeoutput_Y.jpeg
# where XX and Y are computed based on RKModelResources.modelId
# file_id (Y in above example) is hex representation of model_id without leading 0x
file_id = hex_id = hex(model_id)[2:]
# folder_id (XX) in above example if first two chars of model_id converted to hex
# and left padded with zeros if < 4 digits
folder_id = hex_id.zfill(4)[0:2]
return folder_id, file_id
def _dd_to_dms(dd):
""" convert lat or lon in decimal degrees (dd) to degrees, minutes, seconds """
""" return tuple of int(deg), int(min), float(sec) """
dd = float(dd)
negative = dd < 0
dd = abs(dd)
min_, sec_ = divmod(dd * 3600, 60)
deg_, min_ = divmod(min_, 60)
if negative:
if deg_ > 0:
deg_ = deg_ * -1
elif min_ > 0:
min_ = min_ * -1
else:
sec_ = sec_ * -1
return int(deg_), int(min_), sec_
def dd_to_dms_str(lat, lon):
""" convert latitude, longitude in degrees to degrees, minutes, seconds as string """
""" lat: latitude in degrees """
""" lon: longitude in degrees """
""" returns: string tuple in format ("51 deg 30' 12.86\" N", "0 deg 7' 54.50\" W") """
""" this is the same format used by exiftool's json format """
# TODO: add this to readme
lat_deg, lat_min, lat_sec = _dd_to_dms(lat)
lon_deg, lon_min, lon_sec = _dd_to_dms(lon)
lat_hemisphere = "N"
if any([lat_deg < 0, lat_min < 0, lat_sec < 0]):
lat_hemisphere = "S"
lon_hemisphere = "E"
if any([lon_deg < 0, lon_min < 0, lon_sec < 0]):
lon_hemisphere = "W"
lat_str = (
f"{abs(lat_deg)} deg {abs(lat_min)}' {abs(lat_sec):.2f}\" {lat_hemisphere}"
)
lon_str = (
f"{abs(lon_deg)} deg {abs(lon_min)}' {abs(lon_sec):.2f}\" {lon_hemisphere}"
)
return lat_str, lon_str
def get_system_library_path():
""" return the path to the system Photos library as string """
""" only works on MacOS 10.15 """
""" on earlier versions, returns None """
_, major, _ = _get_os_version()
if int(major) < 15:
logging.debug(
f"get_system_library_path not implemented for MacOS < 10.15: you have {major}"
)
return None
plist_file = pathlib.Path(
str(pathlib.Path.home())
+ "/Library/Containers/com.apple.photolibraryd/Data/Library/Preferences/com.apple.photolibraryd.plist"
)
if plist_file.is_file():
with open(plist_file, "rb") as fp:
pl = plistload(fp)
else:
logging.debug(f"could not find plist file: {str(plist_file)}")
return None
return pl.get("SystemLibraryPath")
def get_last_library_path():
""" returns the path to the last opened Photos library
If a library has never been opened, returns None """
plist_file = pathlib.Path(
str(pathlib.Path.home())
+ "/Library/Containers/com.apple.Photos/Data/Library/Preferences/com.apple.Photos.plist"
)
if plist_file.is_file():
with open(plist_file, "rb") as fp:
pl = plistload(fp)
else:
logging.debug(f"could not find plist file: {str(plist_file)}")
return None
# get the IPXDefaultLibraryURLBookmark from com.apple.Photos.plist
# this is a serialized CFData object
photosurlref = pl.get("IPXDefaultLibraryURLBookmark")
if photosurlref is not None:
# use CFURLCreateByResolvingBookmarkData to de-serialize bookmark data into a CFURLRef
# pylint: disable=no-member
# pylint: disable=undefined-variable
photosurl = CoreFoundation.CFURLCreateByResolvingBookmarkData(
kCFAllocatorDefault, photosurlref, 0, None, None, None, None
)
# the CFURLRef we got is a sruct that python treats as an array
# I'd like to pass this to CFURLGetFileSystemRepresentation to get the path but
# CFURLGetFileSystemRepresentation barfs when it gets an array from python instead of expected struct
# first element is the path string in form:
# file:///Users/username/Pictures/Photos%20Library.photoslibrary/
photosurlstr = photosurl[0].absoluteString() if photosurl[0] else None
# now coerce the file URI back into an OS path
# surely there must be a better way
if photosurlstr is not None:
photospath = os.path.normpath(
urllib.parse.unquote(urllib.parse.urlparse(photosurlstr).path)
)
else:
logging.warning(
"Could not extract photos URL String from IPXDefaultLibraryURLBookmark"
)
return None
return photospath
else:
logging.debug("Could not get path to Photos database")
return None
def list_photo_libraries():
""" returns list of Photos libraries found on the system """
""" on MacOS < 10.15, this may omit some libraries """
# On 10.15, mdfind appears to find all libraries
# On older MacOS versions, mdfind appears to ignore some libraries
# glob to find libraries in ~/Pictures then mdfind to find all the others
# TODO: make this more robust
lib_list = glob.glob(f"{str(pathlib.Path.home())}/Pictures/*.photoslibrary")
# On older OS, may not get all libraries so make sure we get the last one
last_lib = get_last_library_path()
if last_lib:
lib_list.append(last_lib)
output = subprocess.check_output(
["/usr/bin/mdfind", "-onlyin", "/", "-name", ".photoslibrary"]
).splitlines()
for lib in output:
lib_list.append(lib.decode("utf-8"))
lib_list = list(set(lib_list))
lib_list.sort()
return lib_list
def get_preferred_uti_extension(uti):
""" get preferred extension for a UTI type
uti: UTI str, e.g. 'public.jpeg'
returns: preferred extension as str """
# reference: https://developer.apple.com/documentation/coreservices/1442744-uttypecopypreferredtagwithclass?language=objc
return CoreServices.UTTypeCopyPreferredTagWithClass(
uti, CoreServices.kUTTagClassFilenameExtension
)
def findfiles(pattern, path_):
"""Returns list of filenames from path_ matched by pattern
shell pattern. Matching is case-insensitive.
If 'path_' is invalid/doesn't exist, returns []."""
if not os.path.isdir(path_):
return []
# See: https://gist.github.com/techtonik/5694830
rule = re.compile(fnmatch.translate(pattern), re.IGNORECASE)
return [name for name in os.listdir(path_) if rule.match(name)]
# TODO: this doesn't always work, still looking for a way to
# force Photos to open the library being operated on
# def _open_photos_library_applescript(library_path):
# """ Force Photos to open a specific library
# library_path: path to the Photos library """
# open_scpt = AppleScript(
# f"""
# on openLibrary
# tell application "Photos"
# open POSIX file "{library_path}"
# end tell
# end openLibrary
# """
# )
# open_scpt.run()
def _open_sql_file(dbname):
""" opens sqlite file dbname in read-only mode
returns tuple of (connection, cursor) """
try:
dbpath = pathlib.Path(dbname).resolve()
conn = sqlite3.connect(f"{dbpath.as_uri()}?mode=ro", timeout=1, uri=True)
c = conn.cursor()
except sqlite3.Error as e:
sys.exit(f"An error occurred opening sqlite file: {e.args[0]} {dbname}")
return (conn, c)
def _db_is_locked(dbname):
""" check to see if a sqlite3 db is locked
returns True if database is locked, otherwise False
dbname: name of database to test """
# first, check to see if lock file exists, if so, assume the file is locked
lock_name = f"{dbname}.lock"
if os.path.exists(lock_name):
logging.debug(f"{dbname} is locked")
return True
# no lock file so try to read from the database to see if it's locked
locked = None
try:
(conn, c) = _open_sql_file(dbname)
c.execute("SELECT name FROM sqlite_master WHERE type='table' ORDER BY name;")
conn.close()
logging.debug(f"{dbname} is not locked")
locked = False
except:
logging.debug(f"{dbname} is locked")
locked = True
return locked
# OSXPHOTOS_XATTR_UUID = "com.osxphotos.uuid"
# def get_uuid_for_file(filepath):
# """ returns UUID associated with an exported file
# filepath: path to exported photo
# """
# attr = xattr.xattr(filepath)
# try:
# uuid_bytes = attr[OSXPHOTOS_XATTR_UUID]
# uuid_str = uuid_bytes.decode('utf-8')
# except KeyError:
# uuid_str = None
# return uuid_str
# def set_uuid_for_file(filepath, uuid):
# """ sets the UUID associated with an exported file
# filepath: path to exported photo
# uuid: uuid string for photo
# """
# if not os.path.exists(filepath):
# raise FileNotFoundError(f"Missing file: {filepath}")
# attr = xattr.xattr(filepath)
# uuid_bytes = bytes(uuid, 'utf-8')
# attr.set(OSXPHOTOS_XATTR_UUID, uuid_bytes)