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from __future__ import division |
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from __future__ import unicode_literals |
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from builtins import range |
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from past.utils import old_div |
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import hashlib |
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import os |
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import random |
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import string |
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import tempfile |
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import re |
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import time |
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import urllib |
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from datetime import datetime |
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from datetime import timedelta |
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from elodie.compatability import _rename |
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from elodie.external.pyexiftool import ExifTool |
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from elodie.dependencies import get_exiftool |
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from elodie import constants |
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22
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View Code Duplication |
def checksum(file_path, blocksize=65536): |
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hasher = hashlib.sha256() |
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with open(file_path, 'rb') as f: |
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buf = f.read(blocksize) |
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while len(buf) > 0: |
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hasher.update(buf) |
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buf = f.read(blocksize) |
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return hasher.hexdigest() |
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return None |
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def create_working_folder(format=None): |
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temporary_folder = tempfile.gettempdir() |
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folder = os.path.join(temporary_folder, random_string(10, format), random_string(10, format)) |
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os.makedirs(folder) |
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return (temporary_folder, folder) |
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def download_file(name, destination): |
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try: |
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url_to_file = 'https://s3.amazonaws.com/jmathai/github/elodie/{}'.format(name) |
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# urlretrieve works differently for python 2 and 3 |
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if constants.python_version < 3: |
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final_name = '{}/{}{}'.format(destination, random_string(10), os.path.splitext(name)[1]) |
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urllib.urlretrieve( |
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url_to_file, |
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final_name |
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) |
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else: |
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final_name, headers = urllib.request.urlretrieve(url_to_file) |
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return final_name |
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except Exception as e: |
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return False |
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def get_file(name): |
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file_path = get_file_path(name) |
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if not os.path.isfile(file_path): |
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return False |
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return file_path |
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def get_file_path(name): |
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current_folder = os.path.dirname(os.path.realpath(__file__)) |
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return os.path.join(current_folder, 'files', name) |
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def get_test_location(): |
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return (61.013710, 99.196656, 'Siberia') |
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def populate_folder(number_of_files, include_invalid=False): |
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folder = '%s/%s' % (tempfile.gettempdir(), random_string(10)) |
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os.makedirs(folder) |
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for x in range(0, number_of_files): |
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ext = 'jpg' if x % 2 == 0 else 'txt' |
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fname = '%s/%s.%s' % (folder, x, ext) |
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with open(fname, 'a'): |
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os.utime(fname, None) |
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if include_invalid: |
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fname = '%s/%s' % (folder, 'invalid.invalid') |
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with open(fname, 'a'): |
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os.utime(fname, None) |
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return folder |
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def random_string(length, format=None): |
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format_choice = string.ascii_uppercase + string.digits |
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if format == 'int': |
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format_choice = string.digits |
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elif format == 'str': |
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format_choice = string.asci_uppercase |
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return ''.join(random.SystemRandom().choice(format_choice) for _ in range(length)) |
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def random_decimal(): |
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return random.random() |
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def random_coordinate(coordinate, precision): |
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# Here we add to the decimal section of the coordinate by a given precision |
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return coordinate + ((old_div(10.0, (10.0**precision))) * random_decimal()) |
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def temp_dir(): |
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return tempfile.gettempdir() |
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def is_windows(): |
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return os.name == 'nt' |
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# path_tz_fix(file_name) |
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# Change timestamp in file_name by the offset |
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# between UTC and local time, i.e. |
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# 2015-12-05_00-59-26-with-title-some-title.jpg -> |
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# 2015-12-04_20-59-26-with-title-some-title.jpg |
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# (Windows only) |
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def path_tz_fix(file_name): |
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if is_windows(): |
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# Calculate the offset between UTC and local time |
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tz_shift = old_div((datetime.fromtimestamp(0) - |
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datetime.utcfromtimestamp(0)).seconds,3600) |
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# replace timestamp in file_name |
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m = re.search('(\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2})',file_name) |
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t_date = datetime.fromtimestamp(time.mktime(time.strptime(m.group(0), '%Y-%m-%d_%H-%M-%S'))) |
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s_date_fix = (t_date-timedelta(hours=tz_shift)).strftime('%Y-%m-%d_%H-%M-%S') |
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return re.sub('\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2}',s_date_fix,file_name) |
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else: |
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return file_name |
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# time_convert(s_time) |
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# Change s_time (struct_time) by the offset |
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# between UTC and local time |
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# (Windows only) |
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def time_convert(s_time): |
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if is_windows(): |
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return time.gmtime((time.mktime(s_time))) |
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else: |
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return s_time |
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# isclose(a,b,rel_tol) |
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# To compare float coordinates a and b |
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# with relative tolerance c |
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def isclose(a, b, rel_tol = 1e-8): |
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if not isinstance(a, (int, float)) or not isinstance(b, (int, float)): |
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return False |
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diff = abs(a - b) |
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return (diff <= abs(rel_tol * a) and |
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diff <= abs(rel_tol * b)) |
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def reset_dbs(): |
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""" Back up hash_db and location_db """ |
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# This is no longer needed. See gh-322 |
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# https://github.com/jmathai/elodie/issues/322 |
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pass |
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def restore_dbs(): |
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""" Restore back ups of hash_db and location_db """ |
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# This is no longer needed. See gh-322 |
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# https://github.com/jmathai/elodie/issues/322 |
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pass |
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166
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def setup_module(): |
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exiftool_addedargs = [ |
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u'-config', |
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u'"{}"'.format(constants.exiftool_config) |
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] |
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ExifTool(executable_=get_exiftool(), addedargs=exiftool_addedargs).start() |
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def teardown_module(): |
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ExifTool().terminate |
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jmathai /
elodie
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