Mercurial > hg > PaInt
annotate paint/package.py @ 78:ab0620d3755b
docstring
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Mon, 28 Jan 2013 18:45:52 -0800 |
| parents | 017b75cd61d8 |
| children | 4446cba4cee6 |
| 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 |
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127 def info(self): |
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128 """return info dictionary for package""" |
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129 self._log(">>> Getting the info") |
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130 return self.package_info(self._path())() |
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131 |
| 11 | 132 def dependencies(self): |
| 78 | 133 """list dependencies of a package""" |
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134 return self.package_info(self._path()).dependencies() |
| 24 | 135 |
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136 def extension(self): |
| 35 | 137 """filename extension of the package""" |
| 138 | |
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139 print ">>> extension:Getting package" |
| 35 | 140 package = self.package() |
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141 print ">>> extension:package=%s" % package |
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142 |
| 35 | 143 # determine the extension (XXX hacky) |
| 144 extensions = ('.tar.gz', '.zip', '.tar.bz2') | |
| 145 for ext in extensions: | |
| 36 | 146 if package.endswith(ext): |
| 35 | 147 return ext |
| 148 | |
| 149 raise Exception("Extension %s not found: %s" % (extensions, package)) | |
| 150 | |
| 151 def package(self, destination=None): | |
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152 """ |
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153 repackage the package to ensure its actually in the right form |
| 34 | 154 and return the path to the destination |
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155 - destination: if given, path to put the build in |
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156 """ |
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157 |
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158 self._log("package: Getting package directory, destination=%s" % repr(destination)) |
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159 |
| 33 | 160 if self._build_path: |
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161 self._log("package: build_path already set: %s" % self._build_path) |
| 34 | 162 if destination: |
| 163 shutil.copy(self._build_path, destination) | |
| 164 return os.path.abspath(destination) | |
| 165 | |
| 166 # return cached copy | |
| 33 | 167 return self._build_path |
| 168 | |
| 34 | 169 path = self._path() |
| 170 dist = os.path.join(path, 'dist') | |
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171 self._log("package: dist directory: %s; (path=%s)" % (dist, path)) |
| 34 | 172 if os.path.exists(dist): |
| 173 shutil.rmtree(dist) | |
| 174 | |
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175 command = [sys.executable, 'setup.py', 'sdist'] |
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176 self._log("package: running: %s" % ' '.join(command)) |
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177 call(command, cwd=path) |
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178 self._log("package: done running setup.py dist") |
| 34 | 179 |
| 180 assert os.path.exists(dist) | |
| 181 contents = os.listdir(dist) | |
| 182 assert len(contents) == 1 | |
| 183 | |
| 184 self._build_path = os.path.join(dist, contents[0]) | |
| 185 | |
| 186 # destination | |
| 187 # use an evil recursive trick | |
| 188 if destination: | |
| 36 | 189 return self.package(destination=destination) |
| 34 | 190 |
| 191 return self._build_path | |
| 192 | |
| 24 | 193 def download(self, directory): |
| 194 """download a package and all its dependencies using pip""" | |
| 28 | 195 if not os.path.exists(directory): |
| 196 os.makedirs(directory) | |
| 197 assert os.path.isdir(directory) | |
| 198 pip.main(['install', '--download', directory, self.src]) | |
| 199 | |
| 200 def pypi(self, directory): | |
| 201 """ | |
| 202 download packages for a pypi directory structure | |
| 203 http://k0s.org/portfolio/pypi.html | |
| 204 """ | |
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205 if not os.path.exists(directory): |
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206 os.makedirs(directory) |
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207 assert os.path.isdir(directory) |
| 28 | 208 tempdir = tempfile.mkdtemp() |
| 209 try: | |
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210 self.download(tempdir) |
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211 files = os.listdir(tempdir) |
| 52 | 212 self._log(">>> Files: %s" % files) |
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213 for f in files: |
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214 |
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215 # full path |
| 47 | 216 src = os.path.join(tempdir, f) |
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217 |
| 35 | 218 # make a package of the thing |
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219 print ">>> pypi:Packaging %s" % src |
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220 package = Package(src) |
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221 print ">>> pypi:DONE packaging %s" % src |
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222 |
| 36 | 223 # get destination dirname, filename |
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224 print ">>> pypi:Getting PyPI path" |
| 36 | 225 dirname, filename = package.pypi_path() |
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226 print ">>> pypi:DONE PyPI path: %s/%s" % (dirname, filename) |
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227 |
| 36 | 228 # make the directory if it doesn't exist |
| 229 subdir = os.path.join(directory, dirname) | |
| 230 if not os.path.exists(subdir): | |
| 231 os.makedirs(subdir) | |
| 232 assert os.path.isdir(subdir) | |
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233 |
| 36 | 234 # move the file |
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235 print ">>> pypi:Moving to PyPI path %s/%s" % (subdir, filename) |
| 47 | 236 package.package(destination=os.path.join(subdir, filename)) |
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237 print ">>> Done with %s" % src |
| 28 | 238 finally: |
| 239 shutil.rmtree(tempdir) | |
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240 |
| 36 | 241 def pypi_path(self): |
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242 """ |
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243 returns subpath 2-tuple appropriate for pypi path structure: |
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244 http://k0s.org/portfolio/pypi.html |
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245 """ |
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246 self._log(">>> pypi_path:Getting info") |
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247 info = self.info() |
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248 self._log(">>> pypi_path:DONE getting info") |
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249 |
| 36 | 250 # determine the extension |
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251 self._log(">>> pypi_path:Getting extension") |
| 36 | 252 extension = self.extension() |
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253 self._log(">>> pypi_path:DONE Getting extension: %s" % extension) |
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254 |
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255 # get the filename destination |
| 36 | 256 name = info['Name'] |
| 257 version = info['Version'] | |
| 258 filename = '%s-%s%s' % (name, version, extension) | |
| 259 return name, filename | |
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260 |
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261 |
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262 class PackageSet(object): |
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263 """ |
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264 a group of packages |
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265 """ |
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266 |
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267 def __init__(self, *packages): |
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268 self.packages = [] |
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269 for package in packages: |
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270 self.add(package) |
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271 raise NotImplementedError |
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272 |
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273 def add(self, package): |
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274 """ |
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275 add a package to the instance. |
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276 If Package instance, add that, otherwise convert |
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277 """ |
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278 |
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279 __iadd__ = add |
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280 |
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281 def dependencies(self): |
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282 """return dependecies for each package""" |
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283 |
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284 def unroll_dependencies(self): |
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285 """unroll dependencies for a package set""" |