Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/boto/file/key.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 # Copyright 2010 Google Inc. |
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2 # Copyright (c) 2011, Nexenta Systems Inc. |
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3 # |
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4 # Permission is hereby granted, free of charge, to any person obtaining a |
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5 # copy of this software and associated documentation files (the |
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6 # "Software"), to deal in the Software without restriction, including |
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7 # without limitation the rights to use, copy, modify, merge, publish, dis- |
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8 # tribute, sublicense, and/or sell copies of the Software, and to permit |
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9 # persons to whom the Software is furnished to do so, subject to the fol- |
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10 # lowing conditions: |
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11 # |
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12 # The above copyright notice and this permission notice shall be included |
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13 # in all copies or substantial portions of the Software. |
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14 # |
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15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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16 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL- |
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17 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT |
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18 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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19 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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20 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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21 # IN THE SOFTWARE. |
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22 |
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23 # File representation of key, for use with "file://" URIs. |
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24 |
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25 import os, shutil |
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26 import sys |
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27 |
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28 from boto.compat import StringIO |
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29 |
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30 class Key(object): |
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31 |
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32 KEY_STREAM_READABLE = 0x01 |
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33 KEY_STREAM_WRITABLE = 0x02 |
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34 KEY_STREAM = (KEY_STREAM_READABLE | KEY_STREAM_WRITABLE) |
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35 KEY_REGULAR_FILE = 0x00 |
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36 |
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37 def __init__(self, bucket, name, fp=None, key_type=KEY_REGULAR_FILE): |
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38 self.bucket = bucket |
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39 self.full_path = name |
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40 if name == '-': |
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41 self.name = None |
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42 self.size = None |
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43 else: |
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44 self.name = name |
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45 self.size = os.stat(name).st_size |
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46 self.key_type = key_type |
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47 if key_type == self.KEY_STREAM_READABLE: |
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48 self.fp = sys.stdin |
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49 self.full_path = '<STDIN>' |
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50 elif key_type == self.KEY_STREAM_WRITABLE: |
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51 self.fp = sys.stdout |
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52 self.full_path = '<STDOUT>' |
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53 else: |
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54 self.fp = fp |
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55 |
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56 def __str__(self): |
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57 return 'file://' + self.full_path |
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58 |
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59 def get_file(self, fp, headers=None, cb=None, num_cb=10, torrent=False): |
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60 """ |
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61 Retrieves a file from a Key |
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62 |
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63 :type fp: file |
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64 :param fp: File pointer to put the data into |
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65 |
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66 :type headers: string |
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67 :param: ignored in this subclass. |
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68 |
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69 :type cb: function |
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70 :param cb: ignored in this subclass. |
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71 |
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72 :type cb: int |
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73 :param num_cb: ignored in this subclass. |
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74 """ |
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75 if self.key_type & self.KEY_STREAM_WRITABLE: |
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76 raise BotoClientError('Stream is not readable') |
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77 elif self.key_type & self.KEY_STREAM_READABLE: |
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78 key_file = self.fp |
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79 else: |
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80 key_file = open(self.full_path, 'rb') |
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81 try: |
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82 shutil.copyfileobj(key_file, fp) |
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83 finally: |
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84 key_file.close() |
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85 |
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86 def set_contents_from_file(self, fp, headers=None, replace=True, cb=None, |
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87 num_cb=10, policy=None, md5=None): |
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88 """ |
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89 Store an object in a file using the name of the Key object as the |
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90 key in file URI and the contents of the file pointed to by 'fp' as the |
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91 contents. |
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92 |
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93 :type fp: file |
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94 :param fp: the file whose contents to upload |
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95 |
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96 :type headers: dict |
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97 :param headers: ignored in this subclass. |
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98 |
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99 :type replace: bool |
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100 :param replace: If this parameter is False, the method |
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101 will first check to see if an object exists in the |
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102 bucket with the same key. If it does, it won't |
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103 overwrite it. The default value is True which will |
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104 overwrite the object. |
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105 |
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106 :type cb: function |
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107 :param cb: ignored in this subclass. |
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108 |
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109 :type cb: int |
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110 :param num_cb: ignored in this subclass. |
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111 |
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112 :type policy: :class:`boto.s3.acl.CannedACLStrings` |
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113 :param policy: ignored in this subclass. |
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114 |
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115 :type md5: A tuple containing the hexdigest version of the MD5 checksum |
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116 of the file as the first element and the Base64-encoded |
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117 version of the plain checksum as the second element. |
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118 This is the same format returned by the compute_md5 method. |
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119 :param md5: ignored in this subclass. |
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120 """ |
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121 if self.key_type & self.KEY_STREAM_READABLE: |
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122 raise BotoClientError('Stream is not writable') |
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123 elif self.key_type & self.KEY_STREAM_WRITABLE: |
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124 key_file = self.fp |
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125 else: |
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126 if not replace and os.path.exists(self.full_path): |
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127 return |
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128 key_file = open(self.full_path, 'wb') |
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129 try: |
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130 shutil.copyfileobj(fp, key_file) |
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131 finally: |
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132 key_file.close() |
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133 |
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134 def get_contents_to_file(self, fp, headers=None, cb=None, num_cb=None, |
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135 torrent=False, version_id=None, |
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136 res_download_handler=None, response_headers=None): |
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137 """ |
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138 Copy contents from the current file to the file pointed to by 'fp'. |
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139 |
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140 :type fp: File-like object |
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141 :param fp: |
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142 |
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143 :type headers: dict |
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144 :param headers: Unused in this subclass. |
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145 |
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146 :type cb: function |
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147 :param cb: Unused in this subclass. |
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148 |
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149 :type cb: int |
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150 :param num_cb: Unused in this subclass. |
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151 |
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152 :type torrent: bool |
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153 :param torrent: Unused in this subclass. |
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154 |
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155 :type res_upload_handler: ResumableDownloadHandler |
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156 :param res_download_handler: Unused in this subclass. |
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157 |
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158 :type response_headers: dict |
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159 :param response_headers: Unused in this subclass. |
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160 """ |
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161 shutil.copyfileobj(self.fp, fp) |
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162 |
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163 def get_contents_as_string(self, headers=None, cb=None, num_cb=10, |
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164 torrent=False): |
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165 """ |
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166 Retrieve file data from the Key, and return contents as a string. |
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167 |
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168 :type headers: dict |
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169 :param headers: ignored in this subclass. |
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170 |
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171 :type cb: function |
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172 :param cb: ignored in this subclass. |
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173 |
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174 :type cb: int |
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175 :param num_cb: ignored in this subclass. |
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176 |
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177 :type cb: int |
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178 :param num_cb: ignored in this subclass. |
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179 |
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180 :type torrent: bool |
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181 :param torrent: ignored in this subclass. |
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182 |
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183 :rtype: string |
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184 :returns: The contents of the file as a string |
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185 """ |
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186 |
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187 fp = StringIO() |
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188 self.get_contents_to_file(fp) |
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189 return fp.getvalue() |
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190 |
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191 def is_stream(self): |
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192 return (self.key_type & self.KEY_STREAM) |
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193 |
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194 def close(self): |
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195 """ |
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196 Closes fp associated with underlying file. |
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197 Caller should call this method when done with this class, to avoid |
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198 using up OS resources (e.g., when iterating over a large number |
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199 of files). |
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200 """ |
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201 self.fp.close() |