Mercurial > hg > PaInt
annotate paint/package.py @ 58:13767ee2ddf4
start adding an egg_info based information thingy
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Wed, 23 Jan 2013 16:59:36 -0800 |
| parents | d5e5c7496784 |
| children | 726008cff4e3 |
| rev | line source |
|---|---|
| 4 | 1 """ |
| 2 package model for python PAckage INTrospection | |
| 3 """ | |
| 4 | |
| 36 | 5 # TODO: use pkginfo.sdist more |
| 6 | |
| 57 | 7 import info |
| 7 | 8 import os |
| 28 | 9 import pip |
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10 import shutil |
| 19 | 11 import subprocess |
| 12 import sys | |
| 7 | 13 import tarfile |
| 5 | 14 import tempfile |
| 7 | 15 import urllib2 |
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16 import urlparse |
| 7 | 17 import utils |
| 5 | 18 |
| 19 | 19 try: |
| 20 from subprocess import check_call as call | |
| 21 except ImportError: | |
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22 from subprocess import call |
| 19 | 23 |
| 10 | 24 __all__ = ['Package'] |
| 25 | |
| 4 | 26 class Package(object): |
| 33 | 27 """ |
| 28 class for python package introspection. | |
| 29 constructor takes the package 'src' | |
| 30 """ | |
| 4 | 31 |
| 50 | 32 def __init__(self, src, verbose=True): |
| 4 | 33 self.src = src |
| 50 | 34 self.verbose = verbose |
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35 |
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36 # ephemeral data |
| 5 | 37 self._tmppath = None |
| 28 | 38 self._egg_info_path = None |
| 33 | 39 self._build_path = None |
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40 self._pkg_info_path = None |
| 5 | 41 |
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42 # TODO: list of temporary files/directories to be deleted |
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43 |
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44 def _log(self, message): |
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45 if self.verbose: |
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46 print '>>> %s' % message |
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47 |
| 34 | 48 def _path(self): |
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49 """filesystem path to package directory""" |
| 7 | 50 |
| 51 | 51 self._log(">>> _path:Getting path to package") |
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52 |
| 7 | 53 # return cached copy if it exists |
| 54 if self._tmppath: | |
| 55 return self._tmppath | |
| 56 | |
| 57 # fetch from the web if a URL | |
| 58 tmpfile = None | |
| 59 src = self.src | |
| 5 | 60 if utils.isURL(self.src): |
| 8 | 61 tmpfile = src = self.fetch() |
| 7 | 62 |
| 63 # unpack if an archive | |
| 28 | 64 if self._is_archive(src): |
| 8 | 65 try: |
| 37 | 66 self._unpack(src) |
| 8 | 67 finally: |
| 68 if tmpfile: | |
| 69 os.remove(tmpfile) | |
| 7 | 70 return self._tmppath |
| 71 | |
| 5 | 72 return self.src |
| 73 | |
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74 def fetch(self, filename=None): |
| 8 | 75 """fetch from remote source to a temporary file""" |
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76 if filename is None: |
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77 fd, filename = tempfile.mkstemp() |
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78 os.close(fd) |
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79 fp = file(filename, 'w') |
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80 resource = urllib2.urlopen(self.src) |
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81 fp.write(resource.read()) |
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82 fp.close() |
| 7 | 83 return filename |
| 84 | |
| 37 | 85 def _unpack(self, archive): |
| 7 | 86 """unpack the archive to a temporary destination""" |
| 87 # TODO: should handle zipfile additionally at least | |
| 88 # Ideally, this would be pluggable, etc | |
| 8 | 89 assert tarfile.is_tarfile(archive), "%s is not an archive" % self.src |
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90 tf = tarfile.TarFile.open(archive) |
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91 self._tmppath = tempfile.mkdtemp() |
| 19 | 92 members = tf.getmembers() |
| 93 | |
| 94 # cut off the top level directory | |
| 37 | 95 members = [i for i in members if os.path.sep in i.name] |
| 19 | 96 tld = set() |
| 97 for member in members: | |
| 98 directory, member.name = member.name.split(os.path.sep, 1) | |
| 99 tld.add(directory) | |
| 100 assert len(tld) == 1 | |
| 101 | |
| 102 # extract | |
| 103 for member in members: | |
| 104 tf.extract(member, path=self._tmppath) | |
| 105 tf.close() | |
| 7 | 106 |
| 28 | 107 def _is_archive(self, path): |
| 7 | 108 """returns if the filesystem path is an archive""" |
| 109 # TODO: should handle zipfile additionally at least | |
| 110 # Ideally, this would be pluggable, etc | |
| 111 return tarfile.is_tarfile(path) | |
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112 |
| 28 | 113 def _cleanup(self): |
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114 if self._tmppath: |
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115 shutil.rmtree(self._tmppath) |
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116 self._tmppath = None |
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117 |
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118 # __del__ = cleanup |
| 11 | 119 |
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120 ### python-package-specific functionality |
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121 |
| 28 | 122 def _egg_info(self): |
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123 """build the egg_info directory""" |
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124 |
| 28 | 125 if self._egg_info_path: |
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126 # return cached copy |
| 28 | 127 return self._egg_info_path |
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128 |
| 34 | 129 directory = self._path() |
| 16 | 130 setup_py = os.path.join(directory, 'setup.py') |
| 131 if not os.path.exists(setup_py): | |
| 17 | 132 raise AssertionError("%s does not exist" % setup_py) |
| 11 | 133 |
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134 # setup the egg info |
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135 exception = None |
| 38 | 136 try: |
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137 code = call([sys.executable, 'setup.py', 'egg_info'], cwd=directory, stdout=subprocess.PIPE) |
| 45 | 138 except Exception, exception: |
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139 pass |
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140 if code or exception: |
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141 message = """Failure to generate egg_info |
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142 - src: %s |
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143 - directory: %s |
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144 """ % (self.src, directory) |
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145 if exception: |
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146 sys.stderr.write(message) |
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147 raise exception |
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148 else: |
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149 raise Exception(message) |
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150 |
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151 # get the .egg-info directory |
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152 egg_info = [i for i in os.listdir(directory) |
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153 if i.endswith('.egg-info')] |
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154 assert len(egg_info) == 1, 'Expected one .egg-info directory in %s, got: %s' % (directory, egg_info) |
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155 egg_info = os.path.join(directory, egg_info[0]) |
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156 assert os.path.isdir(egg_info), "%s is not a directory" % egg_info |
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157 |
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158 # cache it |
| 28 | 159 self._egg_info_path = egg_info |
| 160 return self._egg_info_path | |
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161 |
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162 def _pkg_info(self): |
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163 """returns path to PKG-INFO file""" |
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164 |
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165 if self._pkg_info_path: |
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166 # return cached value |
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167 return self._pkg_info_path |
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168 |
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169 try: |
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170 egg_info = self._egg_info() |
| 45 | 171 except Exception, exception: |
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172 # try to get the package info from a file |
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173 path = self._path() |
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174 pkg_info = os.path.join(path, 'PKG-INFO') |
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175 if os.path.exists(pkg_info): |
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176 self._pkg_info_path = pkg_info |
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177 return self._pkg_info_path |
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178 raise Exception("Cannot find or generate PKG-INFO") |
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179 |
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180 pkg_info = os.path.join(egg_info, 'PKG-INFO') |
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181 assert os.path.exists(pkg_info) |
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182 self._pkg_info_path = pkg_info |
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183 return self._pkg_info_path |
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184 |
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185 def info(self): |
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186 """return info dictionary for package""" |
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187 # could use pkginfo module |
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188 |
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189 self._log(">>> Getting the info") |
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190 |
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191 pkg_info = self._pkg_info() |
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192 |
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193 # read the package information |
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194 info_dict = {} |
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195 for line in file(pkg_info).readlines(): |
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196 if not line or line[0].isspace(): |
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197 continue # XXX neglects description |
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198 assert ':' in line |
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199 key, value = [i.strip() for i in line.split(':', 1)] |
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200 info_dict[key] = value |
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201 |
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202 # return the information |
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203 return info_dict |
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204 |
| 11 | 205 def dependencies(self): |
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206 """return the dependencies""" |
| 32 | 207 # TODO: should probably have a more detailed dict: |
| 208 # {'mozinfo': {'version': '>= 0.2', | |
| 209 # 'url': 'http://something.com/'}} | |
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210 # get the egg_info directory |
| 28 | 211 egg_info = self._egg_info() |
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212 |
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213 # read the dependencies |
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214 requires = os.path.join(egg_info, 'requires.txt') |
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215 if os.path.exists(requires): |
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216 dependencies = [i.strip() for i in file(requires).readlines() if i.strip()] |
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217 else: |
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218 dependencies = [] |
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219 dependencies = dict([(i, None) for i in dependencies]) |
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220 |
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221 # read the dependency links |
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222 dependency_links = os.path.join(egg_info, 'dependency_links.txt') |
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223 if os.path.exists(dependency_links): |
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224 links = [i.strip() for i in file(dependency_links).readlines() if i.strip()] |
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225 for link in links: |
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226 # XXX pretty ghetto |
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227 assert '#egg=' in link |
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228 url, dep = link.split('#egg=', 1) |
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229 if dep in dependencies: |
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230 dependencies[dep] = link |
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231 |
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232 return dependencies |
| 24 | 233 |
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234 def extension(self): |
| 35 | 235 """filename extension of the package""" |
| 236 | |
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237 print ">>> extension:Getting package" |
| 35 | 238 package = self.package() |
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239 print ">>> extension:package=%s" % package |
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240 |
| 35 | 241 # determine the extension (XXX hacky) |
| 242 extensions = ('.tar.gz', '.zip', '.tar.bz2') | |
| 243 for ext in extensions: | |
| 36 | 244 if package.endswith(ext): |
| 35 | 245 return ext |
| 246 | |
| 247 raise Exception("Extension %s not found: %s" % (extensions, package)) | |
| 248 | |
| 249 def package(self, destination=None): | |
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250 """ |
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251 repackage the package to ensure its actually in the right form |
| 34 | 252 and return the path to the destination |
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253 - destination: if given, path to put the build in |
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254 """ |
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255 |
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256 self._log("package: Getting package directory, destination=%s" % repr(destination)) |
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257 |
| 33 | 258 if self._build_path: |
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259 self._log("package: build_path already set: %s" % self._build_path) |
| 34 | 260 if destination: |
| 261 shutil.copy(self._build_path, destination) | |
| 262 return os.path.abspath(destination) | |
| 263 | |
| 264 # return cached copy | |
| 33 | 265 return self._build_path |
| 266 | |
| 34 | 267 path = self._path() |
| 268 dist = os.path.join(path, 'dist') | |
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269 self._log("package: dist directory: %s; (path=%s)" % (dist, path)) |
| 34 | 270 if os.path.exists(dist): |
| 271 shutil.rmtree(dist) | |
| 272 | |
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273 command = [sys.executable, 'setup.py', 'sdist'] |
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274 self._log("package: running: %s" % ' '.join(command)) |
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275 call(command, cwd=path) |
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276 self._log("package: done running setup.py dist") |
| 34 | 277 |
| 278 assert os.path.exists(dist) | |
| 279 contents = os.listdir(dist) | |
| 280 assert len(contents) == 1 | |
| 281 | |
| 282 self._build_path = os.path.join(dist, contents[0]) | |
| 283 | |
| 284 # destination | |
| 285 # use an evil recursive trick | |
| 286 if destination: | |
| 36 | 287 return self.package(destination=destination) |
| 34 | 288 |
| 289 return self._build_path | |
| 290 | |
| 24 | 291 def download(self, directory): |
| 292 """download a package and all its dependencies using pip""" | |
| 28 | 293 if not os.path.exists(directory): |
| 294 os.makedirs(directory) | |
| 295 assert os.path.isdir(directory) | |
| 296 pip.main(['install', '--download', directory, self.src]) | |
| 297 | |
| 298 def pypi(self, directory): | |
| 299 """ | |
| 300 download packages for a pypi directory structure | |
| 301 http://k0s.org/portfolio/pypi.html | |
| 302 """ | |
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303 if not os.path.exists(directory): |
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304 os.makedirs(directory) |
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305 assert os.path.isdir(directory) |
| 28 | 306 tempdir = tempfile.mkdtemp() |
| 307 try: | |
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308 self.download(tempdir) |
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309 files = os.listdir(tempdir) |
| 52 | 310 self._log(">>> Files: %s" % files) |
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311 for f in files: |
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312 |
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313 # full path |
| 47 | 314 src = os.path.join(tempdir, f) |
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315 |
| 35 | 316 # make a package of the thing |
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317 print ">>> pypi:Packaging %s" % src |
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318 package = Package(src) |
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319 print ">>> pypi:DONE packaging %s" % src |
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320 |
| 36 | 321 # get destination dirname, filename |
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322 print ">>> pypi:Getting PyPI path" |
| 36 | 323 dirname, filename = package.pypi_path() |
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324 print ">>> pypi:DONE PyPI path: %s/%s" % (dirname, filename) |
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325 |
| 36 | 326 # make the directory if it doesn't exist |
| 327 subdir = os.path.join(directory, dirname) | |
| 328 if not os.path.exists(subdir): | |
| 329 os.makedirs(subdir) | |
| 330 assert os.path.isdir(subdir) | |
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331 |
| 36 | 332 # move the file |
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333 print ">>> pypi:Moving to PyPI path %s/%s" % (subdir, filename) |
| 47 | 334 package.package(destination=os.path.join(subdir, filename)) |
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335 print ">>> Done with %s" % src |
| 28 | 336 finally: |
| 337 shutil.rmtree(tempdir) | |
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338 |
| 36 | 339 def pypi_path(self): |
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340 """ |
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341 returns subpath 2-tuple appropriate for pypi path structure: |
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342 http://k0s.org/portfolio/pypi.html |
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343 """ |
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344 print ">>> pypi_path:Getting info" |
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345 info = self.info() |
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346 print ">>> pypi_path:DONE getting info" |
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347 |
| 36 | 348 # determine the extension |
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349 print ">>> pypi_path:Getting extension" |
| 36 | 350 extension = self.extension() |
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351 print ">>> pypi_path:DONE Getting extension: %s" % extension |
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352 |
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353 # get the filename destination |
| 36 | 354 name = info['Name'] |
| 355 version = info['Version'] | |
| 356 filename = '%s-%s%s' % (name, version, extension) | |
| 357 return name, filename |