1 | from __future__ import division |
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2 | from __future__ import unicode_literals |
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3 | from builtins import range |
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4 | from past.utils import old_div |
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5 | import hashlib |
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6 | import os |
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7 | import random |
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8 | import string |
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9 | import tempfile |
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10 | import re |
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11 | import time |
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12 | import urllib |
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13 | |||
14 | from datetime import datetime |
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15 | from datetime import timedelta |
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16 | |||
17 | from elodie.compatability import _rename |
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18 | from elodie import constants |
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19 | |||
20 | View Code Duplication | def checksum(file_path, blocksize=65536): |
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21 | hasher = hashlib.sha256() |
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22 | with open(file_path, 'rb') as f: |
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23 | buf = f.read(blocksize) |
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24 | |||
25 | while len(buf) > 0: |
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26 | hasher.update(buf) |
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27 | buf = f.read(blocksize) |
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28 | return hasher.hexdigest() |
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29 | return None |
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30 | |||
31 | def create_working_folder(format=None): |
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32 | temporary_folder = tempfile.gettempdir() |
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33 | folder = os.path.join(temporary_folder, random_string(10, format), random_string(10, format)) |
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34 | os.makedirs(folder) |
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35 | |||
36 | return (temporary_folder, folder) |
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37 | |||
38 | def download_file(name, destination): |
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39 | try: |
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40 | url_to_file = 'https://s3.amazonaws.com/jmathai/github/elodie/{}'.format(name) |
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41 | # urlretrieve works differently for python 2 and 3 |
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42 | if constants.python_version < 3: |
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43 | final_name = '{}/{}{}'.format(destination, random_string(10), os.path.splitext(name)[1]) |
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44 | urllib.urlretrieve( |
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45 | url_to_file, |
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46 | final_name |
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47 | ) |
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48 | else: |
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49 | final_name, headers = urllib.request.urlretrieve(url_to_file) |
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50 | return final_name |
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51 | except Exception as e: |
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52 | return False |
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53 | |||
54 | def get_file(name): |
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55 | file_path = get_file_path(name) |
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56 | if not os.path.isfile(file_path): |
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57 | return False |
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58 | |||
59 | return file_path |
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60 | |||
61 | def get_file_path(name): |
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62 | current_folder = os.path.dirname(os.path.realpath(__file__)) |
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63 | return os.path.join(current_folder, 'files', name) |
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64 | |||
65 | def get_test_location(): |
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66 | return (61.013710, 99.196656, 'Siberia') |
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67 | |||
68 | def populate_folder(number_of_files, include_invalid=False): |
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69 | folder = '%s/%s' % (tempfile.gettempdir(), random_string(10)) |
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70 | os.makedirs(folder) |
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71 | |||
72 | for x in range(0, number_of_files): |
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73 | ext = 'jpg' if x % 2 == 0 else 'txt' |
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74 | fname = '%s/%s.%s' % (folder, x, ext) |
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75 | with open(fname, 'a'): |
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76 | os.utime(fname, None) |
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77 | |||
78 | if include_invalid: |
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79 | fname = '%s/%s' % (folder, 'invalid.invalid') |
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80 | with open(fname, 'a'): |
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81 | os.utime(fname, None) |
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82 | |||
83 | return folder |
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84 | |||
85 | def random_string(length, format=None): |
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86 | format_choice = string.ascii_uppercase + string.digits |
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87 | if format == 'int': |
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88 | format_choice = string.digits |
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89 | elif format == 'str': |
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90 | format_choice = string.asci_uppercase |
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91 | |||
92 | return ''.join(random.SystemRandom().choice(format_choice) for _ in range(length)) |
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93 | |||
94 | def random_decimal(): |
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95 | return random.random() |
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96 | |||
97 | def random_coordinate(coordinate, precision): |
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98 | # Here we add to the decimal section of the coordinate by a given precision |
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99 | return coordinate + ((old_div(10.0, (10.0**precision))) * random_decimal()) |
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100 | |||
101 | def temp_dir(): |
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102 | return tempfile.gettempdir() |
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103 | |||
104 | def is_windows(): |
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105 | return os.name == 'nt' |
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106 | |||
107 | # path_tz_fix(file_name) |
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108 | # Change timestamp in file_name by the offset |
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109 | # between UTC and local time, i.e. |
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110 | # 2015-12-05_00-59-26-with-title-some-title.jpg -> |
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111 | # 2015-12-04_20-59-26-with-title-some-title.jpg |
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112 | # (Windows only) |
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113 | |||
114 | def path_tz_fix(file_name): |
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115 | if is_windows(): |
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116 | # Calculate the offset between UTC and local time |
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117 | tz_shift = old_div((datetime.fromtimestamp(0) - |
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118 | datetime.utcfromtimestamp(0)).seconds,3600) |
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119 | # replace timestamp in file_name |
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120 | m = re.search('(\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2})',file_name) |
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121 | t_date = datetime.fromtimestamp(time.mktime(time.strptime(m.group(0), '%Y-%m-%d_%H-%M-%S'))) |
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122 | s_date_fix = (t_date-timedelta(hours=tz_shift)).strftime('%Y-%m-%d_%H-%M-%S') |
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123 | return re.sub('\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2}',s_date_fix,file_name) |
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124 | else: |
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125 | return file_name |
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126 | |||
127 | # time_convert(s_time) |
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128 | # Change s_time (struct_time) by the offset |
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129 | # between UTC and local time |
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130 | # (Windows only) |
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131 | |||
132 | def time_convert(s_time): |
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133 | if is_windows(): |
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134 | return time.gmtime((time.mktime(s_time))) |
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135 | else: |
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136 | return s_time |
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137 | |||
138 | |||
139 | # isclose(a,b,rel_tol) |
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140 | # To compare float coordinates a and b |
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141 | # with relative tolerance c |
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142 | |||
143 | def isclose(a, b, rel_tol = 1e-8): |
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144 | if not isinstance(a, (int, float)) or not isinstance(b, (int, float)): |
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145 | return False |
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146 | |||
147 | diff = abs(a - b) |
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148 | return (diff <= abs(rel_tol * a) and |
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149 | diff <= abs(rel_tol * b)) |
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150 | |||
151 | def reset_dbs(): |
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152 | """ Back up hash_db and location_db """ |
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153 | hash_db = '{}-test'.format(constants.hash_db) |
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154 | if not os.path.isfile(hash_db): |
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155 | hash_db = constants.hash_db |
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156 | if os.path.isfile(hash_db): |
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157 | _rename(hash_db, '{}-test'.format(hash_db)) |
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158 | #else restore_dbs wasn't called by a previous test, keep the |
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159 | #existing hash_db backup |
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160 | |||
161 | |||
162 | location_db = '{}-test'.format(constants.location_db) |
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163 | if not os.path.isfile(location_db): |
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164 | location_db = constants.location_db |
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165 | if os.path.isfile(location_db): |
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166 | _rename(location_db, '{}-test'.format(location_db)) |
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167 | #else restore_dbs wasn't called by a previous test, keep the |
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168 | #existing location_db backup |
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169 | |||
170 | def restore_dbs(): |
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171 | """ Restore back ups of hash_db and location_db """ |
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172 | hash_db = '{}-test'.format(constants.hash_db) |
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173 | if os.path.isfile(hash_db): |
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174 | _rename(hash_db, hash_db.replace('-test', '')) |
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175 | |||
176 | location_db = '{}-test'.format(constants.location_db) |
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177 | if os.path.isfile(location_db): |
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178 | _rename(location_db, location_db.replace('-test', '')) |
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179 |