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annotate env/lib/python3.9/site-packages/zipstream_new-1.1.8.dist-info/METADATA @ 0:4f3585e2f14b draft default tip

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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
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1 Metadata-Version: 2.1
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2 Name: zipstream-new
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3 Version: 1.1.8
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4 Summary: Zipfile generator that takes input files as well as streams
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5 Home-page: https://github.com/arjan-s/python-zipstream
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6 Author: arjan5
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7 Author-email: arjan@anymore.nl
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8 License: UNKNOWN
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9 Keywords: zip streaming
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10 Platform: UNKNOWN
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11 Classifier: Programming Language :: Python
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12 Classifier: License :: OSI Approved :: GNU General Public License v3 (GPLv3)
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13 Classifier: Operating System :: OS Independent
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14 Classifier: Topic :: System :: Archiving :: Compression
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15 Description-Content-Type: text/markdown
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16
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17
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18 # python-zipstream
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19
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20 zipstream.py is a zip archive generator based on python 3.3's zipfile.py. It was created to
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21 generate a zip file generator for streaming (ie web apps). This is beneficial for when you
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22 want to provide a downloadable archive of a large collection of regular files, which would be infeasible to
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23 generate the archive prior to downloading or of a very large file that you do not want to store entirely on disk or on memory.
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24
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25 The archive is generated as an iterator of strings, which, when joined, form
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26 the zip archive. For example, the following code snippet would write a zip
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27 archive containing files from 'path' to a normal file:
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28
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29 ```python
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30 import zipstream
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31
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32 z = zipstream.ZipFile()
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33 z.write('path/to/files')
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34
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35 with open('zipfile.zip', 'wb') as f:
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36 for data in z:
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37 f.write(data)
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38 ```
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39
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40 zipstream also allows to take as input a byte string iterable and to generate
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41 the archive as an iterator.
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42 This avoids storing large files on disk or in memory.
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43 To do so you could use something like this snippet:
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44
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45 ```python
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46 def iterable():
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47 for _ in xrange(10):
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48 yield b'this is a byte string\x01\n'
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49
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50 z = zipstream.ZipFile()
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51 z.write_iter('my_archive_iter', iterable())
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52
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53 with open('zipfile.zip', 'wb') as f:
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54 for data in z:
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55 f.write(data)
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56 ```
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57
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58 Of course both approach can be combined:
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59
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60 ```python
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61 def iterable():
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62 for _ in xrange(10):
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63 yield b'this is a byte string\x01\n'
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64
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65 z = zipstream.ZipFile()
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66 z.write('path/to/files', 'my_archive_files')
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67 z.write_iter('my_archive_iter', iterable())
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68
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69 with open('zipfile.zip', 'wb') as f:
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70 for data in z:
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71 f.write(data)
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72 ```
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73
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74 Since recent versions of web.py support returning iterators of strings to be
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75 sent to the browser, to download a dynamically generated archive, you could
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76 use something like this snippet:
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77
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78 ```python
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79 def GET(self):
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80 path = '/path/to/dir/of/files'
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81 zip_filename = 'files.zip'
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82 web.header('Content-type' , 'application/zip')
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83 web.header('Content-Disposition', 'attachment; filename="%s"' % (
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84 zip_filename,))
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85 return zipstream.ZipFile(path)
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86 ```
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87
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88 If the zlib module is available, zipstream.ZipFile can generate compressed zip
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89 archives.
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90
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91 ## Installation
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92
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93 ```
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94 pip install zipstream-new
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95 ```
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96
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97 ## Requirements
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98
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99 * Python 2.6+, 3.2+, pypy
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100
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101 ## Examples
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102
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103 ### flask
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104
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105 ```python
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106 from flask import Response
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107
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108 @app.route('/package.zip', methods=['GET'], endpoint='zipball')
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109 def zipball():
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110 def generator():
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111 z = zipstream.ZipFile(mode='w', compression=zipstream.ZIP_DEFLATED)
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112
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113 z.write('/path/to/file')
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114
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115 for chunk in z:
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116 yield chunk
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117
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118 response = Response(generator(), mimetype='application/zip')
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119 response.headers['Content-Disposition'] = 'attachment; filename={}'.format('files.zip')
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120 return response
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121
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122 # or
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123
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124 @app.route('/package.zip', methods=['GET'], endpoint='zipball')
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125 def zipball():
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126 z = zipstream.ZipFile(mode='w', compression=zipstream.ZIP_DEFLATED)
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127 z.write('/path/to/file')
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128
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129 response = Response(z, mimetype='application/zip')
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130 response.headers['Content-Disposition'] = 'attachment; filename={}'.format('files.zip')
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131 return response
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132
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133 # Partial flushing of the zip before closing
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134
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135 @app.route('/package.zip', methods=['GET'], endpoint='zipball')
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136 def zipball():
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137 def generate_zip_with_manifest():
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138 z = zipstream.ZipFile(mode='w', compression=zipstream.ZIP_DEFLATED)
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139
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140 manifest = []
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141 for filename in os.listdir('/path/to/files'):
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142 z.write(os.path.join('/path/to/files', filename), arcname=filename)
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143 yield from z.flush()
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144 manifest.append(filename)
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145
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146 z.write_str('manifest.json', json.dumps(manifest).encode())
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147
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148 yield from z
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149
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150 response = Response(z, mimetype='application/zip')
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151 response.headers['Content-Disposition'] = 'attachment; filename={}'.format('files.zip')
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152 return response
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153 ```
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154
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155 ### django 1.5+
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156
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157 ```python
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158 from django.http import StreamingHttpResponse
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159
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160 def zipball(request):
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161 z = zipstream.ZipFile(mode='w', compression=zipstream.ZIP_DEFLATED)
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162 z.write('/path/to/file')
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163
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164 response = StreamingHttpResponse(z, content_type='application/zip')
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165 response['Content-Disposition'] = 'attachment; filename={}'.format('files.zip')
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166 return response
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167 ```
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168
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169 ### webpy
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170
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171 ```python
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172 def GET(self):
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173 path = '/path/to/dir/of/files'
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174 zip_filename = 'files.zip'
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175 web.header('Content-type' , 'application/zip')
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176 web.header('Content-Disposition', 'attachment; filename="%s"' % (
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177 zip_filename,))
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178 return zipstream.ZipFile(path)
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179 ```
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180
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181 ## Running tests
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182
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183 With python version > 2.6, just run the following command: `python -m unittest discover`
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184
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185 Alternatively, you can use `nose`.
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186
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187 If you want to run the tests on all supported Python versions, run `tox`.
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188
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189