annotate paint/package.py @ 87:5a624b3c1007 default tip

py35
author Jeff Hammel <k0scist@gmail.com>
date Sun, 19 Feb 2017 17:50:00 -0800
parents 582ffe5e39a0
children
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4
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1 """
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2 package model for python PAckage INTrospection
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3 """
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4
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5 # TODO: use pkginfo.sdist more
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6
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7 import info
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8 import os
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9 import pip
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10 import shutil
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11 import subprocess
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12 import sys
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13 import tarfile
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14 import tempfile
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15 import urllib2
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16 import urlparse
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17 import utils
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18
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19 from subprocess import check_call as call
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20
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21 __all__ = ['Package']
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22
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23 class Package(object):
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24 """
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25 python package introspection.
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26 invoked with the package source, 'src'
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27 """
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28
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29 def __init__(self, src, verbose=True):
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30 """
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31 - src : URL or filesystem path to the package
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32 - verbose : show verbose output
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33 """
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34 # TODO: directory of sources
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35 # e.g. http://hg.mozilla.org/mozilla-central/file/tip/testing/mozbase
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36 self.src = src
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37 self.verbose = verbose
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38
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39 # ephemeral data
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40 self._tmppath = None
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41 self._egg_info_path = None
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42 self._build_path = None
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43 self._pkg_info_path = None
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44
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45 # package metadata provider
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46 # TODO: this should be chooseable but currently the keys of the
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47 # interfaces are not the same
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48 self.package_info = info.EggInfo
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49
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50 # TODO: list of temporary files/directories to be deleted
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51
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52 def _log(self, message):
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53 if self.verbose:
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54 print '>>> %s' % message
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55
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56 def _path(self):
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57 """filesystem path to package directory"""
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58
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59 self._log(">>> _path:Getting path to package")
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60
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61 # return cached copy if it exists
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62 if self._tmppath:
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63 return self._tmppath
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64
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65 # fetch from the web if a URL
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66 tmpfile = None
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67 src = self.src
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68 if utils.isURL(self.src):
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69 tmpfile = src = self.fetch()
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70
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71 # unpack if an archive
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72 if self._is_archive(src):
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73 try:
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74 self._unpack(src)
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75 finally:
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76 if tmpfile:
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77 os.remove(tmpfile)
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78 return self._tmppath
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79
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80 return self.src
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81
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82 def fetch(self, filename=None):
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83 """fetch from remote source to a temporary file"""
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84 if filename is None:
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85 fd, filename = tempfile.mkstemp()
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86 os.close(fd)
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87 fp = file(filename, 'w')
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88 resource = urllib2.urlopen(self.src)
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89 fp.write(resource.read())
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90 fp.close()
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91 return filename
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92
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93 def _unpack(self, archive):
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94 """unpack the archive to a temporary destination"""
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95 # TODO: should handle zipfile additionally at least
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96 # Ideally, this would be pluggable, etc
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97 assert tarfile.is_tarfile(archive), "%s is not an archive" % self.src
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98 tf = tarfile.TarFile.open(archive)
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99 self._tmppath = tempfile.mkdtemp()
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100 members = tf.getmembers()
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101
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102 # cut off the top level directory
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103 members = [i for i in members if os.path.sep in i.name]
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104 tld = set()
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105 for member in members:
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106 directory, member.name = member.name.split(os.path.sep, 1)
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107 tld.add(directory)
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108 assert len(tld) == 1
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109
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110 # extract
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111 for member in members:
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112 tf.extract(member, path=self._tmppath)
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113 tf.close()
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114
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115 def _is_archive(self, path):
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116 """returns if the filesystem path is an archive"""
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117 # TODO: should handle zipfile additionally at least
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118 # Ideally, this would be pluggable, etc
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119 return (not os.path.isdir(path)) and tarfile.is_tarfile(path)
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120
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121 def _cleanup(self):
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122 if self._tmppath:
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123 shutil.rmtree(self._tmppath)
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124 self._tmppath = None
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125
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126 __del__ = _cleanup
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127
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128 ### python-package-specific functionality
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129
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130 def info(self):
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131 """return info dictionary for package"""
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132 self._log(">>> Getting the info")
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133 return self.package_info(self._path())()
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134
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135 def dependencies(self):
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136 """list dependencies of a package"""
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137 return self.package_info(self._path()).dependencies()
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138
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139 def extension(self):
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140 """filename extension of the package"""
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141
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142 print ">>> extension:Getting package"
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143 package = self.package()
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144 print ">>> extension:package=%s" % package
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145
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146 # determine the extension (XXX hacky)
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147 extensions = ('.tar.gz', '.zip', '.tar.bz2')
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148 for ext in extensions:
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149 if package.endswith(ext):
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150 return ext
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151
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152 raise Exception("Extension %s not found: %s" % (extensions, package))
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153
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154 def package(self, destination=None):
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155 """
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156 repackage the package to ensure its actually in the right form
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157 and return the path to the destination
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158 - destination: if given, path to put the build in
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159 """
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160
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161 self._log("package: Getting package directory, destination=%s" % repr(destination))
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162
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163 if self._build_path:
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164 self._log("package: build_path already set: %s" % self._build_path)
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165 if destination:
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166 shutil.copy(self._build_path, destination)
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167 return os.path.abspath(destination)
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168
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169 # return cached copy
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170 return self._build_path
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171
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172 path = self._path()
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173 dist = os.path.join(path, 'dist')
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174 self._log("package: dist directory: %s; (path=%s)" % (dist, path))
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175 if os.path.exists(dist):
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176 shutil.rmtree(dist)
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177
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178 command = [sys.executable, 'setup.py', 'sdist']
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179 self._log("package: running: %s" % ' '.join(command))
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180 call(command, cwd=path)
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181 self._log("package: done running setup.py dist")
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182
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183 assert os.path.exists(dist)
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184 contents = os.listdir(dist)
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185 assert len(contents) == 1
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186
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187 self._build_path = os.path.join(dist, contents[0])
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188
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189 # destination
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190 # use an evil recursive trick
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191 if destination:
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192 return self.package(destination=destination)
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193
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194 return self._build_path
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195
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196 def download(self, directory):
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197 """download a package and all its dependencies using pip"""
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198 if not os.path.exists(directory):
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199 os.makedirs(directory)
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200 assert os.path.isdir(directory)
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201 pip.main(['install', '--download', directory, self.src])
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202
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203 def pypi(self, directory):
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204 """
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205 download packages for a pypi directory structure
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206 http://k0s.org/portfolio/pypi.html
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207 """
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208 if not os.path.exists(directory):
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209 os.makedirs(directory)
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210 assert os.path.isdir(directory)
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211 tempdir = tempfile.mkdtemp()
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212 try:
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213 self.download(tempdir)
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214 files = os.listdir(tempdir)
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215 self._log(">>> Files: %s" % files)
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216 for f in files:
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217
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218 # full path
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219 src = os.path.join(tempdir, f)
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220
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221 # make a package of the thing
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222 print ">>> pypi:Packaging %s" % src
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223 package = Package(src)
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224 print ">>> pypi:DONE packaging %s" % src
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225
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226 # get destination dirname, filename
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227 print ">>> pypi:Getting PyPI path"
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228 dirname, filename = package.pypi_path()
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229 print ">>> pypi:DONE PyPI path: %s/%s" % (dirname, filename)
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230
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231 # make the directory if it doesn't exist
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232 subdir = os.path.join(directory, dirname)
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233 if not os.path.exists(subdir):
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234 os.makedirs(subdir)
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235 assert os.path.isdir(subdir)
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236
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237 # move the file
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238 print ">>> pypi:Moving to PyPI path %s/%s" % (subdir, filename)
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239 package.package(destination=os.path.join(subdir, filename))
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240 print ">>> Done with %s" % src
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241 finally:
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242 shutil.rmtree(tempdir)
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243
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244 def pypi_path(self):
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245 """
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246 returns subpath 2-tuple appropriate for pypi path structure:
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247 http://k0s.org/portfolio/pypi.html
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248 """
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249 self._log(">>> pypi_path:Getting info")
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250 info = self.info()
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251 self._log(">>> pypi_path:DONE getting info")
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252
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253 # determine the extension
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254 self._log(">>> pypi_path:Getting extension")
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255 extension = self.extension()
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256 self._log(">>> pypi_path:DONE Getting extension: %s" % extension)
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257
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258 # get the filename destination
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259 name = info['Name']
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260 version = info['Version']
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261 filename = '%s-%s%s' % (name, version, extension)
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262 return name, filename
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263
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264
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265 class PackageSet(object):
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266 """
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267 a group of packages
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268 """
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269
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270 def __init__(self, *packages):
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271 self.packages = []
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272 for package in packages:
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273 self.add(package)
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274 raise NotImplementedError
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275
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276 def add(self, package):
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277 """
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278 add a package to the instance.
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279 If Package instance, add that, otherwise convert
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280 """
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281
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282 __iadd__ = add
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283
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284 def dependencies(self):
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285 """return dependecies for each package"""
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286
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287 def unroll_dependencies(self):
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288 """unroll dependencies for a package set"""