Mercurial > hg > PaInt
annotate paint/package.py @ 65:6d6f5c5c26d4
add __del__ method
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Fri, 25 Jan 2013 13:46:11 -0800 |
| parents | 1a279bac0afa |
| children | af7609457dc6 |
| 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 |
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19 from subprocess import check_call as call |
| 19 | 20 |
| 10 | 21 __all__ = ['Package'] |
| 22 | |
| 4 | 23 class Package(object): |
| 33 | 24 """ |
| 25 class for python package introspection. | |
| 26 constructor takes the package 'src' | |
| 27 """ | |
| 4 | 28 |
| 50 | 29 def __init__(self, src, verbose=True): |
| 63 | 30 """ |
| 31 - src : URL or filesystem path to the package | |
| 32 """ | |
| 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 # package metadata provider |
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43 # TODO: this should be chooseable but currently the keys of the |
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44 # interfaces are not the same |
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45 self.package_info = info.EggInfo |
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46 |
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47 # TODO: list of temporary files/directories to be deleted |
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48 |
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49 def _log(self, message): |
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50 if self.verbose: |
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51 print '>>> %s' % message |
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52 |
| 34 | 53 def _path(self): |
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54 """filesystem path to package directory""" |
| 7 | 55 |
| 51 | 56 self._log(">>> _path:Getting path to package") |
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57 |
| 7 | 58 # return cached copy if it exists |
| 59 if self._tmppath: | |
| 60 return self._tmppath | |
| 61 | |
| 62 # fetch from the web if a URL | |
| 63 tmpfile = None | |
| 64 src = self.src | |
| 5 | 65 if utils.isURL(self.src): |
| 8 | 66 tmpfile = src = self.fetch() |
| 7 | 67 |
| 68 # unpack if an archive | |
| 28 | 69 if self._is_archive(src): |
| 8 | 70 try: |
| 37 | 71 self._unpack(src) |
| 8 | 72 finally: |
| 73 if tmpfile: | |
| 74 os.remove(tmpfile) | |
| 7 | 75 return self._tmppath |
| 76 | |
| 5 | 77 return self.src |
| 78 | |
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79 def fetch(self, filename=None): |
| 8 | 80 """fetch from remote source to a temporary file""" |
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81 if filename is None: |
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82 fd, filename = tempfile.mkstemp() |
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83 os.close(fd) |
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84 fp = file(filename, 'w') |
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85 resource = urllib2.urlopen(self.src) |
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86 fp.write(resource.read()) |
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87 fp.close() |
| 7 | 88 return filename |
| 89 | |
| 37 | 90 def _unpack(self, archive): |
| 7 | 91 """unpack the archive to a temporary destination""" |
| 92 # TODO: should handle zipfile additionally at least | |
| 93 # Ideally, this would be pluggable, etc | |
| 8 | 94 assert tarfile.is_tarfile(archive), "%s is not an archive" % self.src |
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95 tf = tarfile.TarFile.open(archive) |
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96 self._tmppath = tempfile.mkdtemp() |
| 19 | 97 members = tf.getmembers() |
| 98 | |
| 99 # cut off the top level directory | |
| 37 | 100 members = [i for i in members if os.path.sep in i.name] |
| 19 | 101 tld = set() |
| 102 for member in members: | |
| 103 directory, member.name = member.name.split(os.path.sep, 1) | |
| 104 tld.add(directory) | |
| 105 assert len(tld) == 1 | |
| 106 | |
| 107 # extract | |
| 108 for member in members: | |
| 109 tf.extract(member, path=self._tmppath) | |
| 110 tf.close() | |
| 7 | 111 |
| 28 | 112 def _is_archive(self, path): |
| 7 | 113 """returns if the filesystem path is an archive""" |
| 114 # TODO: should handle zipfile additionally at least | |
| 115 # Ideally, this would be pluggable, etc | |
| 116 return tarfile.is_tarfile(path) | |
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117 |
| 28 | 118 def _cleanup(self): |
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119 if self._tmppath: |
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120 shutil.rmtree(self._tmppath) |
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121 self._tmppath = None |
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122 |
| 65 | 123 __del__ = _cleanup |
| 11 | 124 |
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125 ### python-package-specific functionality |
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126 |
| 28 | 127 def _egg_info(self): |
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128 """build the egg_info directory""" |
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129 |
| 28 | 130 if self._egg_info_path: |
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131 # return cached copy |
| 28 | 132 return self._egg_info_path |
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133 |
| 34 | 134 directory = self._path() |
| 16 | 135 setup_py = os.path.join(directory, 'setup.py') |
| 136 if not os.path.exists(setup_py): | |
| 17 | 137 raise AssertionError("%s does not exist" % setup_py) |
| 11 | 138 |
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139 # setup the egg info |
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140 exception = None |
| 38 | 141 try: |
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142 code = call([sys.executable, 'setup.py', 'egg_info'], cwd=directory, stdout=subprocess.PIPE) |
| 45 | 143 except Exception, exception: |
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144 pass |
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145 if code or exception: |
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146 message = """Failure to generate egg_info |
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147 - src: %s |
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148 - directory: %s |
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149 """ % (self.src, directory) |
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150 if exception: |
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151 sys.stderr.write(message) |
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152 raise exception |
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153 else: |
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154 raise Exception(message) |
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155 |
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156 # get the .egg-info directory |
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157 egg_info = [i for i in os.listdir(directory) |
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158 if i.endswith('.egg-info')] |
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159 assert len(egg_info) == 1, 'Expected one .egg-info directory in %s, got: %s' % (directory, egg_info) |
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160 egg_info = os.path.join(directory, egg_info[0]) |
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161 assert os.path.isdir(egg_info), "%s is not a directory" % egg_info |
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162 |
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163 # cache it |
| 28 | 164 self._egg_info_path = egg_info |
| 165 return self._egg_info_path | |
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166 |
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167 def _pkg_info(self): |
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168 """returns path to PKG-INFO file""" |
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169 |
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170 if self._pkg_info_path: |
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171 # return cached value |
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172 return self._pkg_info_path |
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173 |
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174 try: |
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175 egg_info = self._egg_info() |
| 45 | 176 except Exception, exception: |
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177 # try to get the package info from a file |
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178 path = self._path() |
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179 pkg_info = os.path.join(path, 'PKG-INFO') |
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180 if os.path.exists(pkg_info): |
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181 self._pkg_info_path = pkg_info |
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182 return self._pkg_info_path |
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183 raise Exception("Cannot find or generate PKG-INFO") |
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184 |
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185 pkg_info = os.path.join(egg_info, 'PKG-INFO') |
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186 assert os.path.exists(pkg_info) |
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187 self._pkg_info_path = pkg_info |
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188 return self._pkg_info_path |
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189 |
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190 def info(self): |
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191 """return info dictionary for package""" |
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192 # could use pkginfo module |
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193 |
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194 self._log(">>> Getting the info") |
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195 |
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196 pkg_info = self._pkg_info() |
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197 |
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198 # read the package information |
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199 info_dict = {} |
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200 for line in file(pkg_info).readlines(): |
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201 if not line or line[0].isspace(): |
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202 continue # XXX neglects description |
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203 assert ':' in line |
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204 key, value = [i.strip() for i in line.split(':', 1)] |
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205 info_dict[key] = value |
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206 |
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207 # return the information |
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208 return info_dict |
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209 |
| 11 | 210 def dependencies(self): |
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211 """return the dependencies""" |
| 32 | 212 # TODO: should probably have a more detailed dict: |
| 213 # {'mozinfo': {'version': '>= 0.2', | |
| 214 # 'url': 'http://something.com/'}} | |
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215 # get the egg_info directory |
| 28 | 216 egg_info = self._egg_info() |
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217 |
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218 # read the dependencies |
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219 requires = os.path.join(egg_info, 'requires.txt') |
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220 if os.path.exists(requires): |
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221 dependencies = [i.strip() for i in file(requires).readlines() if i.strip()] |
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222 else: |
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223 dependencies = [] |
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224 dependencies = dict([(i, None) for i in dependencies]) |
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225 |
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226 # read the dependency links |
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227 dependency_links = os.path.join(egg_info, 'dependency_links.txt') |
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228 if os.path.exists(dependency_links): |
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229 links = [i.strip() for i in file(dependency_links).readlines() if i.strip()] |
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230 for link in links: |
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231 # XXX pretty ghetto |
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232 assert '#egg=' in link |
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233 url, dep = link.split('#egg=', 1) |
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234 if dep in dependencies: |
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235 dependencies[dep] = link |
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236 |
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237 return dependencies |
| 24 | 238 |
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239 def extension(self): |
| 35 | 240 """filename extension of the package""" |
| 241 | |
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242 print ">>> extension:Getting package" |
| 35 | 243 package = self.package() |
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244 print ">>> extension:package=%s" % package |
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245 |
| 35 | 246 # determine the extension (XXX hacky) |
| 247 extensions = ('.tar.gz', '.zip', '.tar.bz2') | |
| 248 for ext in extensions: | |
| 36 | 249 if package.endswith(ext): |
| 35 | 250 return ext |
| 251 | |
| 252 raise Exception("Extension %s not found: %s" % (extensions, package)) | |
| 253 | |
| 254 def package(self, destination=None): | |
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255 """ |
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256 repackage the package to ensure its actually in the right form |
| 34 | 257 and return the path to the destination |
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258 - destination: if given, path to put the build in |
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259 """ |
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260 |
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261 self._log("package: Getting package directory, destination=%s" % repr(destination)) |
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262 |
| 33 | 263 if self._build_path: |
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264 self._log("package: build_path already set: %s" % self._build_path) |
| 34 | 265 if destination: |
| 266 shutil.copy(self._build_path, destination) | |
| 267 return os.path.abspath(destination) | |
| 268 | |
| 269 # return cached copy | |
| 33 | 270 return self._build_path |
| 271 | |
| 34 | 272 path = self._path() |
| 273 dist = os.path.join(path, 'dist') | |
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274 self._log("package: dist directory: %s; (path=%s)" % (dist, path)) |
| 34 | 275 if os.path.exists(dist): |
| 276 shutil.rmtree(dist) | |
| 277 | |
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278 command = [sys.executable, 'setup.py', 'sdist'] |
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279 self._log("package: running: %s" % ' '.join(command)) |
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280 call(command, cwd=path) |
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281 self._log("package: done running setup.py dist") |
| 34 | 282 |
| 283 assert os.path.exists(dist) | |
| 284 contents = os.listdir(dist) | |
| 285 assert len(contents) == 1 | |
| 286 | |
| 287 self._build_path = os.path.join(dist, contents[0]) | |
| 288 | |
| 289 # destination | |
| 290 # use an evil recursive trick | |
| 291 if destination: | |
| 36 | 292 return self.package(destination=destination) |
| 34 | 293 |
| 294 return self._build_path | |
| 295 | |
| 24 | 296 def download(self, directory): |
| 297 """download a package and all its dependencies using pip""" | |
| 28 | 298 if not os.path.exists(directory): |
| 299 os.makedirs(directory) | |
| 300 assert os.path.isdir(directory) | |
| 301 pip.main(['install', '--download', directory, self.src]) | |
| 302 | |
| 303 def pypi(self, directory): | |
| 304 """ | |
| 305 download packages for a pypi directory structure | |
| 306 http://k0s.org/portfolio/pypi.html | |
| 307 """ | |
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308 if not os.path.exists(directory): |
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309 os.makedirs(directory) |
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310 assert os.path.isdir(directory) |
| 28 | 311 tempdir = tempfile.mkdtemp() |
| 312 try: | |
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313 self.download(tempdir) |
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314 files = os.listdir(tempdir) |
| 52 | 315 self._log(">>> Files: %s" % files) |
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316 for f in files: |
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317 |
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318 # full path |
| 47 | 319 src = os.path.join(tempdir, f) |
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320 |
| 35 | 321 # make a package of the thing |
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322 print ">>> pypi:Packaging %s" % src |
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323 package = Package(src) |
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324 print ">>> pypi:DONE packaging %s" % src |
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325 |
| 36 | 326 # get destination dirname, filename |
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327 print ">>> pypi:Getting PyPI path" |
| 36 | 328 dirname, filename = package.pypi_path() |
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329 print ">>> pypi:DONE PyPI path: %s/%s" % (dirname, filename) |
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330 |
| 36 | 331 # make the directory if it doesn't exist |
| 332 subdir = os.path.join(directory, dirname) | |
| 333 if not os.path.exists(subdir): | |
| 334 os.makedirs(subdir) | |
| 335 assert os.path.isdir(subdir) | |
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336 |
| 36 | 337 # move the file |
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338 print ">>> pypi:Moving to PyPI path %s/%s" % (subdir, filename) |
| 47 | 339 package.package(destination=os.path.join(subdir, filename)) |
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340 print ">>> Done with %s" % src |
| 28 | 341 finally: |
| 342 shutil.rmtree(tempdir) | |
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343 |
| 36 | 344 def pypi_path(self): |
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345 """ |
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346 returns subpath 2-tuple appropriate for pypi path structure: |
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347 http://k0s.org/portfolio/pypi.html |
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348 """ |
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349 print ">>> pypi_path:Getting info" |
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350 info = self.info() |
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351 print ">>> pypi_path:DONE getting info" |
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352 |
| 36 | 353 # determine the extension |
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354 print ">>> pypi_path:Getting extension" |
| 36 | 355 extension = self.extension() |
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356 print ">>> pypi_path:DONE Getting extension: %s" % extension |
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357 |
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358 # get the filename destination |
| 36 | 359 name = info['Name'] |
| 360 version = info['Version'] | |
| 361 filename = '%s-%s%s' % (name, version, extension) | |
| 362 return name, filename |