Mercurial > hg > PaInt
annotate paint/package.py @ 21:4df3e715817d
now have passing tests again
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Mon, 27 Feb 2012 13:44:52 -0800 |
| parents | 11bc01a089e7 |
| children | 54c1e7e43a54 |
| rev | line source |
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| 4 | 1 """ |
| 2 package model for python PAckage INTrospection | |
| 3 """ | |
| 4 | |
| 7 | 5 import os |
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6 import shutil |
| 19 | 7 import subprocess |
| 8 import sys | |
| 7 | 9 import tarfile |
| 5 | 10 import tempfile |
| 7 | 11 import urllib2 |
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12 import urlparse |
| 7 | 13 import utils |
| 5 | 14 |
| 19 | 15 try: |
| 16 from subprocess import check_call as call | |
| 17 except ImportError: | |
| 18 from subporcess import call | |
| 19 | |
| 10 | 20 __all__ = ['Package'] |
| 21 | |
| 4 | 22 class Package(object): |
| 7 | 23 # XXX much of this is generic resource stuff and should be split off |
| 4 | 24 |
| 25 def __init__(self, src): | |
| 26 self.src = src | |
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27 |
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28 # ephemeral data |
| 5 | 29 self._tmppath = None |
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30 self._egg_info = None |
| 5 | 31 |
| 32 def path(self): | |
| 33 """filesystem path to package""" | |
| 7 | 34 |
| 35 # return cached copy if it exists | |
| 36 if self._tmppath: | |
| 37 return self._tmppath | |
| 38 | |
| 39 # fetch from the web if a URL | |
| 40 tmpfile = None | |
| 41 src = self.src | |
| 5 | 42 if utils.isURL(self.src): |
| 8 | 43 tmpfile = src = self.fetch() |
| 7 | 44 |
| 45 # unpack if an archive | |
| 46 if self.is_archive(src): | |
| 8 | 47 try: |
| 48 self.unpack(src) | |
| 49 finally: | |
| 50 if tmpfile: | |
| 51 os.remove(tmpfile) | |
| 7 | 52 return self._tmppath |
| 53 | |
| 5 | 54 return self.src |
| 55 | |
| 56 def fetch(self): | |
| 8 | 57 """fetch from remote source to a temporary file""" |
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58 resource = urllib2.urlopen(self.src) |
| 11 | 59 fd, filename = tempfile.mkstemp() |
| 7 | 60 os.write(fd, resource.read()) |
| 61 os.close(fd) | |
| 62 return filename | |
| 63 | |
| 64 def unpack(self, archive): | |
| 65 """unpack the archive to a temporary destination""" | |
| 66 # TODO: should handle zipfile additionally at least | |
| 67 # Ideally, this would be pluggable, etc | |
| 8 | 68 assert tarfile.is_tarfile(archive), "%s is not an archive" % self.src |
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69 tf = tarfile.TarFile.open(archive) |
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70 self._tmppath = tempfile.mkdtemp() |
| 19 | 71 members = tf.getmembers() |
| 72 | |
| 73 # cut off the top level directory | |
| 74 assert not [i for i in members if not os.path.sep in i.name] | |
| 75 tld = set() | |
| 76 for member in members: | |
| 77 directory, member.name = member.name.split(os.path.sep, 1) | |
| 78 tld.add(directory) | |
| 79 assert len(tld) == 1 | |
| 80 | |
| 81 # extract | |
| 82 for member in members: | |
| 83 tf.extract(member, path=self._tmppath) | |
| 84 tf.close() | |
| 7 | 85 |
| 86 def is_archive(self, path): | |
| 87 """returns if the filesystem path is an archive""" | |
| 88 # TODO: should handle zipfile additionally at least | |
| 89 # Ideally, this would be pluggable, etc | |
| 90 return tarfile.is_tarfile(path) | |
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91 |
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92 def cleanup(self): |
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93 if self._tmppath: |
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94 shutil.rmtree(self._tmppath) |
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95 self._tmppath = None |
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96 |
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97 # __del__ = cleanup |
| 11 | 98 |
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99 ### python-package-specific functionality |
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100 |
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101 def egg_info(self): |
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102 """build the egg_info directory""" |
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103 |
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104 if self._egg_info: |
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105 # return cached copy |
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106 return self._egg_info |
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107 |
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108 directory = self.path() |
| 16 | 109 setup_py = os.path.join(directory, 'setup.py') |
| 110 if not os.path.exists(setup_py): | |
| 17 | 111 raise AssertionError("%s does not exist" % setup_py) |
| 11 | 112 |
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113 # setup the egg info |
| 19 | 114 call([sys.executable, 'setup.py', 'egg_info'], cwd=directory, stdout=subprocess.PIPE) |
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115 |
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116 # get the .egg-info directory |
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117 egg_info = [i for i in os.listdir(directory) |
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118 if i.endswith('.egg-info')] |
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119 assert len(egg_info) == 1, 'Expected one .egg-info directory in %s, got: %s' % (directory, egg_info) |
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120 egg_info = os.path.join(directory, egg_info[0]) |
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121 assert os.path.isdir(egg_info), "%s is not a directory" % egg_info |
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122 |
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123 # cache it |
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124 self._egg_info = egg_info |
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125 return self._egg_info |
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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 # could use pkginfo |
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130 |
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131 egg_info = self.egg_info() |
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132 |
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133 # read the package information |
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134 pkg_info = os.path.join(egg_info, 'PKG-INFO') |
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135 info_dict = {} |
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136 for line in file(pkg_info).readlines(): |
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137 if not line or line[0].isspace(): |
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138 continue # XXX neglects description |
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139 assert ':' in line |
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140 key, value = [i.strip() for i in line.split(':', 1)] |
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141 info_dict[key] = value |
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142 |
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143 # return the information |
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144 return info_dict |
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145 |
| 11 | 146 def dependencies(self): |
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147 """return the dependencies""" |
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148 |
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149 # get the egg_info directory |
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150 egg_info = self.egg_info() |
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151 |
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152 # read the dependencies |
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153 requires = os.path.join(egg_info, 'requires.txt') |
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154 if os.path.exists(requires): |
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155 dependencies = [i.strip() for i in file(requires).readlines() if i.strip()] |
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156 else: |
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157 dependencies = [] |
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158 dependencies = dict([(i, None) for i in dependencies]) |
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159 |
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160 # read the dependency links |
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161 dependency_links = os.path.join(egg_info, 'dependency_links.txt') |
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162 if os.path.exists(dependency_links): |
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163 links = [i.strip() for i in file(dependency_links).readlines() if i.strip()] |
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164 for link in links: |
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165 # XXX pretty ghetto |
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166 assert '#egg=' in link |
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167 url, dep = link.split('#egg=', 1) |
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168 if dep in dependencies: |
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169 dependencies[dep] = link |
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170 |
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171 return dependencies |