Mercurial > hg > PaInt
annotate paint/package.py @ 31:5fb1844db0b2
back to the drawring broad
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Fri, 30 Mar 2012 13:38:33 -0700 |
| parents | fe5f282dca9b |
| children | f2e31ac03bb3 |
| rev | line source |
|---|---|
| 4 | 1 """ |
| 2 package model for python PAckage INTrospection | |
| 3 """ | |
| 4 | |
| 7 | 5 import os |
| 28 | 6 import pip |
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7 import pypi |
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8 import shutil |
| 19 | 9 import subprocess |
| 10 import sys | |
| 7 | 11 import tarfile |
| 5 | 12 import tempfile |
| 7 | 13 import urllib2 |
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14 import urlparse |
| 7 | 15 import utils |
| 5 | 16 |
| 19 | 17 try: |
| 18 from subprocess import check_call as call | |
| 19 except ImportError: | |
| 20 from subporcess import call | |
| 21 | |
| 10 | 22 __all__ = ['Package'] |
| 23 | |
| 4 | 24 class Package(object): |
| 25 | |
| 26 def __init__(self, src): | |
| 27 self.src = src | |
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28 |
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29 # ephemeral data |
| 5 | 30 self._tmppath = None |
| 28 | 31 self._egg_info_path = None |
| 5 | 32 |
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33 # TODO: list of temporary files/directories to be deleted |
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34 |
| 5 | 35 def path(self): |
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36 """filesystem path to package directory""" |
| 7 | 37 |
| 38 # return cached copy if it exists | |
| 39 if self._tmppath: | |
| 40 return self._tmppath | |
| 41 | |
| 42 # fetch from the web if a URL | |
| 43 tmpfile = None | |
| 44 src = self.src | |
| 5 | 45 if utils.isURL(self.src): |
| 8 | 46 tmpfile = src = self.fetch() |
| 7 | 47 |
| 48 # unpack if an archive | |
| 28 | 49 if self._is_archive(src): |
| 8 | 50 try: |
| 51 self.unpack(src) | |
| 52 finally: | |
| 53 if tmpfile: | |
| 54 os.remove(tmpfile) | |
| 7 | 55 return self._tmppath |
| 56 | |
| 5 | 57 return self.src |
| 58 | |
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59 def fetch(self, filename=None): |
| 8 | 60 """fetch from remote source to a temporary file""" |
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61 if filename is None: |
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62 fd, filename = tempfile.mkstemp() |
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63 os.close(fd) |
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64 fp = file(filename, 'w') |
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65 resource = urllib2.urlopen(self.src) |
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66 fp.write(resource.read()) |
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67 fp.close() |
| 7 | 68 return filename |
| 69 | |
| 70 def unpack(self, archive): | |
| 71 """unpack the archive to a temporary destination""" | |
| 72 # TODO: should handle zipfile additionally at least | |
| 73 # Ideally, this would be pluggable, etc | |
| 8 | 74 assert tarfile.is_tarfile(archive), "%s is not an archive" % self.src |
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75 tf = tarfile.TarFile.open(archive) |
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76 self._tmppath = tempfile.mkdtemp() |
| 19 | 77 members = tf.getmembers() |
| 78 | |
| 79 # cut off the top level directory | |
| 80 assert not [i for i in members if not os.path.sep in i.name] | |
| 81 tld = set() | |
| 82 for member in members: | |
| 83 directory, member.name = member.name.split(os.path.sep, 1) | |
| 84 tld.add(directory) | |
| 85 assert len(tld) == 1 | |
| 86 | |
| 87 # extract | |
| 88 for member in members: | |
| 89 tf.extract(member, path=self._tmppath) | |
| 90 tf.close() | |
| 7 | 91 |
| 28 | 92 def _is_archive(self, path): |
| 7 | 93 """returns if the filesystem path is an archive""" |
| 94 # TODO: should handle zipfile additionally at least | |
| 95 # Ideally, this would be pluggable, etc | |
| 96 return tarfile.is_tarfile(path) | |
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97 |
| 28 | 98 def _cleanup(self): |
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99 if self._tmppath: |
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100 shutil.rmtree(self._tmppath) |
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101 self._tmppath = None |
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102 |
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103 # __del__ = cleanup |
| 11 | 104 |
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105 ### python-package-specific functionality |
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106 |
| 28 | 107 def _egg_info(self): |
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108 """build the egg_info directory""" |
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109 |
| 28 | 110 if self._egg_info_path: |
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111 # return cached copy |
| 28 | 112 return self._egg_info_path |
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113 |
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114 directory = self.path() |
| 16 | 115 setup_py = os.path.join(directory, 'setup.py') |
| 116 if not os.path.exists(setup_py): | |
| 17 | 117 raise AssertionError("%s does not exist" % setup_py) |
| 11 | 118 |
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119 # setup the egg info |
| 19 | 120 call([sys.executable, 'setup.py', 'egg_info'], cwd=directory, stdout=subprocess.PIPE) |
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121 |
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122 # get the .egg-info directory |
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123 egg_info = [i for i in os.listdir(directory) |
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124 if i.endswith('.egg-info')] |
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125 assert len(egg_info) == 1, 'Expected one .egg-info directory in %s, got: %s' % (directory, egg_info) |
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126 egg_info = os.path.join(directory, egg_info[0]) |
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127 assert os.path.isdir(egg_info), "%s is not a directory" % egg_info |
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128 |
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129 # cache it |
| 28 | 130 self._egg_info_path = egg_info |
| 131 return self._egg_info_path | |
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132 |
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133 def info(self): |
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134 """return info dictionary for package""" |
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135 # could use pkginfo |
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136 |
| 28 | 137 egg_info = self._egg_info() |
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138 |
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139 # read the package information |
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140 pkg_info = os.path.join(egg_info, 'PKG-INFO') |
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141 info_dict = {} |
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142 for line in file(pkg_info).readlines(): |
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143 if not line or line[0].isspace(): |
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144 continue # XXX neglects description |
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145 assert ':' in line |
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146 key, value = [i.strip() for i in line.split(':', 1)] |
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147 info_dict[key] = value |
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148 |
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149 # return the information |
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150 return info_dict |
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151 |
| 11 | 152 def dependencies(self): |
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153 """return the dependencies""" |
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154 |
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155 # get the egg_info directory |
| 28 | 156 egg_info = self._egg_info() |
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157 |
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158 # read the dependencies |
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159 requires = os.path.join(egg_info, 'requires.txt') |
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160 if os.path.exists(requires): |
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161 dependencies = [i.strip() for i in file(requires).readlines() if i.strip()] |
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162 else: |
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163 dependencies = [] |
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164 dependencies = dict([(i, None) for i in dependencies]) |
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165 |
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166 # read the dependency links |
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167 dependency_links = os.path.join(egg_info, 'dependency_links.txt') |
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168 if os.path.exists(dependency_links): |
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169 links = [i.strip() for i in file(dependency_links).readlines() if i.strip()] |
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170 for link in links: |
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171 # XXX pretty ghetto |
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172 assert '#egg=' in link |
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173 url, dep = link.split('#egg=', 1) |
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174 if dep in dependencies: |
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175 dependencies[dep] = link |
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176 |
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177 return dependencies |
| 24 | 178 |
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179 def extension(self): |
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180 """filename extension""" |
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181 |
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182 def repackage(self): |
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183 """ |
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184 repackage the package to ensure its actually in the right form |
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185 """ |
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186 |
| 24 | 187 def download(self, directory): |
| 188 """download a package and all its dependencies using pip""" | |
| 28 | 189 if not os.path.exists(directory): |
| 190 os.makedirs(directory) | |
| 191 assert os.path.isdir(directory) | |
| 192 pip.main(['install', '--download', directory, self.src]) | |
| 193 | |
| 194 def pypi(self, directory): | |
| 195 """ | |
| 196 download packages for a pypi directory structure | |
| 197 http://k0s.org/portfolio/pypi.html | |
| 198 """ | |
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199 if not os.path.exists(directory): |
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200 os.makedirs(directory) |
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201 assert os.path.isdir(directory) |
| 28 | 202 tempdir = tempfile.mkdtemp() |
| 203 try: | |
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204 self.download(tempdir) |
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205 for package in os.listdir(tempdir): |
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206 |
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207 # full path |
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208 src = os.path.join(tempdir, package) |
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209 |
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210 package = Package(src) |
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211 |
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212 # # get destination dirname, filename |
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213 # try: |
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214 # dirname, filename = pypi.pypi_path(src) |
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215 # except ValueError: |
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216 # # PKG-INFO not found |
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217 # pass # TODO |
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218 |
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219 # # make the directory if it doesn't exist |
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220 # subdir = os.path.join(directory, dirname) |
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221 # if not os.path.exists(subdir): |
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222 # os.makedirs(subdir) |
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223 # assert os.path.isdir(subdir) |
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224 |
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225 # # move the file |
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226 # shutil.move(src, os.path.join(subdir, filename)) |
| 28 | 227 finally: |
| 228 shutil.rmtree(tempdir) | |
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229 |
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230 def pypi_path(self, path): |
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231 """ |
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232 returns subpath 2-tuple appropriate for pypi path structure: |
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233 http://k0s.org/portfolio/pypi.html |
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234 """ |
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235 info = self.info() |
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236 # sdist = pkginfo.sdist.SDist(path) |
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237 |
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238 # determine the extension (XXX hacky) |
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239 extensions = ('.tar.gz', '.zip', '.tar.bz2') |
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240 for ext in extensions: |
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241 import pdb; pdb.set_trace() |
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242 if sdist.filename.endswith(ext): |
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243 break |
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244 else: |
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245 raise Exception("Extension %s not found: %s" % (extensions, sdist.filename)) |
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246 |
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247 # get the filename destination |
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248 filename = '%s-%s%s' % (info['name'], ext) |
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249 return sdist.name, filename |