Mercurial > hg > PaInt
annotate paint/package.py @ 48:abfb267e8332
debugging info; lord i hate this
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Tue, 08 May 2012 10:45:16 -0700 |
| parents | 213cf933366d |
| children | 85374a69cf89 |
| rev | line source |
|---|---|
| 4 | 1 """ |
| 2 package model for python PAckage INTrospection | |
| 3 """ | |
| 4 | |
| 36 | 5 # TODO: use pkginfo.sdist more |
| 6 | |
| 7 | 7 import os |
| 28 | 8 import pip |
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9 import shutil |
| 19 | 10 import subprocess |
| 11 import sys | |
| 7 | 12 import tarfile |
| 5 | 13 import tempfile |
| 7 | 14 import urllib2 |
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15 import urlparse |
| 7 | 16 import utils |
| 5 | 17 |
| 19 | 18 try: |
| 19 from subprocess import check_call as call | |
| 20 except ImportError: | |
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21 from subprocess import call |
| 19 | 22 |
| 10 | 23 __all__ = ['Package'] |
| 24 | |
| 4 | 25 class Package(object): |
| 33 | 26 """ |
| 27 class for python package introspection. | |
| 28 constructor takes the package 'src' | |
| 29 """ | |
| 4 | 30 |
| 31 def __init__(self, src): | |
| 32 self.src = src | |
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33 |
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34 # ephemeral data |
| 5 | 35 self._tmppath = None |
| 28 | 36 self._egg_info_path = None |
| 33 | 37 self._build_path = None |
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38 self._pkg_info_path = None |
| 5 | 39 |
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40 # TODO: list of temporary files/directories to be deleted |
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41 |
| 34 | 42 def _path(self): |
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43 """filesystem path to package directory""" |
| 7 | 44 |
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45 print ">>> Getting path to package" |
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46 |
| 7 | 47 # return cached copy if it exists |
| 48 if self._tmppath: | |
| 49 return self._tmppath | |
| 50 | |
| 51 # fetch from the web if a URL | |
| 52 tmpfile = None | |
| 53 src = self.src | |
| 5 | 54 if utils.isURL(self.src): |
| 8 | 55 tmpfile = src = self.fetch() |
| 7 | 56 |
| 57 # unpack if an archive | |
| 28 | 58 if self._is_archive(src): |
| 8 | 59 try: |
| 37 | 60 self._unpack(src) |
| 8 | 61 finally: |
| 62 if tmpfile: | |
| 63 os.remove(tmpfile) | |
| 7 | 64 return self._tmppath |
| 65 | |
| 5 | 66 return self.src |
| 67 | |
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68 def fetch(self, filename=None): |
| 8 | 69 """fetch from remote source to a temporary file""" |
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70 if filename is None: |
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71 fd, filename = tempfile.mkstemp() |
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72 os.close(fd) |
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73 fp = file(filename, 'w') |
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74 resource = urllib2.urlopen(self.src) |
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75 fp.write(resource.read()) |
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76 fp.close() |
| 7 | 77 return filename |
| 78 | |
| 37 | 79 def _unpack(self, archive): |
| 7 | 80 """unpack the archive to a temporary destination""" |
| 81 # TODO: should handle zipfile additionally at least | |
| 82 # Ideally, this would be pluggable, etc | |
| 8 | 83 assert tarfile.is_tarfile(archive), "%s is not an archive" % self.src |
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84 tf = tarfile.TarFile.open(archive) |
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85 self._tmppath = tempfile.mkdtemp() |
| 19 | 86 members = tf.getmembers() |
| 87 | |
| 88 # cut off the top level directory | |
| 37 | 89 members = [i for i in members if os.path.sep in i.name] |
| 19 | 90 tld = set() |
| 91 for member in members: | |
| 92 directory, member.name = member.name.split(os.path.sep, 1) | |
| 93 tld.add(directory) | |
| 94 assert len(tld) == 1 | |
| 95 | |
| 96 # extract | |
| 97 for member in members: | |
| 98 tf.extract(member, path=self._tmppath) | |
| 99 tf.close() | |
| 7 | 100 |
| 28 | 101 def _is_archive(self, path): |
| 7 | 102 """returns if the filesystem path is an archive""" |
| 103 # TODO: should handle zipfile additionally at least | |
| 104 # Ideally, this would be pluggable, etc | |
| 105 return tarfile.is_tarfile(path) | |
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106 |
| 28 | 107 def _cleanup(self): |
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108 if self._tmppath: |
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109 shutil.rmtree(self._tmppath) |
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110 self._tmppath = None |
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111 |
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112 # __del__ = cleanup |
| 11 | 113 |
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114 ### python-package-specific functionality |
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115 |
| 28 | 116 def _egg_info(self): |
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117 """build the egg_info directory""" |
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118 |
| 28 | 119 if self._egg_info_path: |
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120 # return cached copy |
| 28 | 121 return self._egg_info_path |
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122 |
| 34 | 123 directory = self._path() |
| 16 | 124 setup_py = os.path.join(directory, 'setup.py') |
| 125 if not os.path.exists(setup_py): | |
| 17 | 126 raise AssertionError("%s does not exist" % setup_py) |
| 11 | 127 |
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128 # setup the egg info |
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129 exception = None |
| 38 | 130 try: |
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131 code = call([sys.executable, 'setup.py', 'egg_info'], cwd=directory, stdout=subprocess.PIPE) |
| 45 | 132 except Exception, exception: |
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133 pass |
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134 if code or exception: |
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135 message = """Failure to generate egg_info |
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136 - src: %s |
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137 - directory: %s |
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138 """ % (self.src, directory) |
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139 if exception: |
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140 sys.stderr.write(message) |
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141 raise exception |
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142 else: |
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143 raise Exception(message) |
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144 |
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145 # get the .egg-info directory |
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146 egg_info = [i for i in os.listdir(directory) |
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147 if i.endswith('.egg-info')] |
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148 assert len(egg_info) == 1, 'Expected one .egg-info directory in %s, got: %s' % (directory, egg_info) |
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149 egg_info = os.path.join(directory, egg_info[0]) |
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150 assert os.path.isdir(egg_info), "%s is not a directory" % egg_info |
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151 |
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152 # cache it |
| 28 | 153 self._egg_info_path = egg_info |
| 154 return self._egg_info_path | |
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155 |
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156 def _pkg_info(self): |
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157 """returns path to PKG-INFO file""" |
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158 |
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159 if self._pkg_info_path: |
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160 # return cached value |
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161 return self._pkg_info_path |
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162 |
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163 try: |
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164 egg_info = self._egg_info() |
| 45 | 165 except Exception, exception: |
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166 # try to get the package info from a file |
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167 path = self._path() |
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168 pkg_info = os.path.join(path, 'PKG-INFO') |
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169 if os.path.exists(pkg_info): |
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170 self._pkg_info_path = pkg_info |
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171 return self._pkg_info_path |
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172 raise Exception("Cannot find or generate PKG-INFO") |
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173 |
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174 pkg_info = os.path.join(egg_info, 'PKG-INFO') |
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175 assert 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 |
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179 def info(self): |
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180 """return info dictionary for package""" |
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181 # could use pkginfo module |
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182 |
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183 print ">>> Getting the info""" |
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184 |
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185 pkg_info = self._pkg_info() |
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186 |
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187 # read the package information |
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188 info_dict = {} |
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189 for line in file(pkg_info).readlines(): |
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190 if not line or line[0].isspace(): |
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191 continue # XXX neglects description |
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192 assert ':' in line |
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193 key, value = [i.strip() for i in line.split(':', 1)] |
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194 info_dict[key] = value |
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195 |
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196 # return the information |
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197 print ">>> Info: %s" % info_dict |
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198 return info_dict |
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199 |
| 11 | 200 def dependencies(self): |
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201 """return the dependencies""" |
| 32 | 202 # TODO: should probably have a more detailed dict: |
| 203 # {'mozinfo': {'version': '>= 0.2', | |
| 204 # 'url': 'http://something.com/'}} | |
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205 # get the egg_info directory |
| 28 | 206 egg_info = self._egg_info() |
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207 |
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208 # read the dependencies |
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209 requires = os.path.join(egg_info, 'requires.txt') |
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210 if os.path.exists(requires): |
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211 dependencies = [i.strip() for i in file(requires).readlines() if i.strip()] |
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212 else: |
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213 dependencies = [] |
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214 dependencies = dict([(i, None) for i in dependencies]) |
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215 |
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216 # read the dependency links |
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217 dependency_links = os.path.join(egg_info, 'dependency_links.txt') |
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218 if os.path.exists(dependency_links): |
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219 links = [i.strip() for i in file(dependency_links).readlines() if i.strip()] |
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220 for link in links: |
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221 # XXX pretty ghetto |
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222 assert '#egg=' in link |
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223 url, dep = link.split('#egg=', 1) |
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224 if dep in dependencies: |
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225 dependencies[dep] = link |
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226 |
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227 return dependencies |
| 24 | 228 |
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229 def extension(self): |
| 35 | 230 """filename extension of the package""" |
| 231 | |
| 232 package = self.package() | |
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233 |
| 35 | 234 # determine the extension (XXX hacky) |
| 235 extensions = ('.tar.gz', '.zip', '.tar.bz2') | |
| 236 for ext in extensions: | |
| 36 | 237 if package.endswith(ext): |
| 35 | 238 return ext |
| 239 | |
| 240 raise Exception("Extension %s not found: %s" % (extensions, package)) | |
| 241 | |
| 242 def package(self, destination=None): | |
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243 """ |
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244 repackage the package to ensure its actually in the right form |
| 34 | 245 and return the path to the destination |
| 246 - destination: if given, path to put the build in [TODO] | |
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247 """ |
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248 |
| 33 | 249 if self._build_path: |
| 34 | 250 if destination: |
| 251 shutil.copy(self._build_path, destination) | |
| 252 return os.path.abspath(destination) | |
| 253 | |
| 254 # return cached copy | |
| 33 | 255 return self._build_path |
| 256 | |
| 34 | 257 path = self._path() |
| 258 dist = os.path.join(path, 'dist') | |
| 259 if os.path.exists(dist): | |
| 260 shutil.rmtree(dist) | |
| 261 | |
| 262 call([sys.executable, 'setup.py', 'sdist'], cwd=path, stdout=subprocess.PIPE) | |
| 263 | |
| 264 assert os.path.exists(dist) | |
| 265 contents = os.listdir(dist) | |
| 266 assert len(contents) == 1 | |
| 267 | |
| 268 self._build_path = os.path.join(dist, contents[0]) | |
| 269 | |
| 270 # destination | |
| 271 # use an evil recursive trick | |
| 272 if destination: | |
| 36 | 273 return self.package(destination=destination) |
| 34 | 274 |
| 275 return self._build_path | |
| 276 | |
| 24 | 277 def download(self, directory): |
| 278 """download a package and all its dependencies using pip""" | |
| 28 | 279 if not os.path.exists(directory): |
| 280 os.makedirs(directory) | |
| 281 assert os.path.isdir(directory) | |
| 282 pip.main(['install', '--download', directory, self.src]) | |
| 283 | |
| 284 def pypi(self, directory): | |
| 285 """ | |
| 286 download packages for a pypi directory structure | |
| 287 http://k0s.org/portfolio/pypi.html | |
| 288 """ | |
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289 if not os.path.exists(directory): |
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290 os.makedirs(directory) |
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291 assert os.path.isdir(directory) |
| 28 | 292 tempdir = tempfile.mkdtemp() |
| 293 try: | |
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294 self.download(tempdir) |
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295 files = os.listdir(tempdir) |
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296 print ">>> Files: %s" % files |
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297 for f in files: |
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298 |
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299 # full path |
| 47 | 300 src = os.path.join(tempdir, f) |
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301 |
| 35 | 302 # make a package of the thing |
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303 print ">>> pypi:Packaging %s" % src |
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304 package = Package(src) |
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305 print ">>> pypi:DONE packaging %s" % src |
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306 |
| 36 | 307 # get destination dirname, filename |
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308 print ">>> pypi:Getting PyPI path" |
| 36 | 309 dirname, filename = package.pypi_path() |
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310 print ">>> pypi:DONE PyPI path: %s/%s" % (dirname, filename) |
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311 |
| 36 | 312 # make the directory if it doesn't exist |
| 313 subdir = os.path.join(directory, dirname) | |
| 314 if not os.path.exists(subdir): | |
| 315 os.makedirs(subdir) | |
| 316 assert os.path.isdir(subdir) | |
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317 |
| 36 | 318 # move the file |
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319 print ">>> pypi:Moving to PyPI path %s/%s" % (subdir, filename) |
| 47 | 320 package.package(destination=os.path.join(subdir, filename)) |
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321 print ">>> Done with %s" % src |
| 28 | 322 finally: |
| 323 shutil.rmtree(tempdir) | |
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324 |
| 36 | 325 def pypi_path(self): |
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326 """ |
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327 returns subpath 2-tuple appropriate for pypi path structure: |
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328 http://k0s.org/portfolio/pypi.html |
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329 """ |
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330 print ">>> pypi_path:Getting info" |
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331 info = self.info() |
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332 print ">>> pypi_path:DONE getting info" |
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333 |
| 36 | 334 # determine the extension |
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335 print ">>> pypi_path:Getting extension" |
| 36 | 336 extension = self.extension() |
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337 print ">>> pypi_path:DONE Getting extension: %s" % extension |
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338 |
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339 # get the filename destination |
| 36 | 340 name = info['Name'] |
| 341 version = info['Version'] | |
| 342 filename = '%s-%s%s' % (name, version, extension) | |
| 343 return name, filename |