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<dt>Revision</dt> <dd><a href="https://trac.macports.org/changeset/147824">147824</a></dd>
<dt>Author</dt> <dd>stromnov@macports.org</dd>
<dt>Date</dt> <dd>2016-04-16 17:00:55 -0700 (Sat, 16 Apr 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>py-entrypoints: new port</pre>
<h3>Added Paths</h3>
<ul>
<li>trunk/dports/python/py-entrypoints/</li>
<li><a href="#trunkdportspythonpyentrypointsPortfile">trunk/dports/python/py-entrypoints/Portfile</a></li>
<li>trunk/dports/python/py-entrypoints/files/</li>
<li><a href="#trunkdportspythonpyentrypointsfilesentrypointspy">trunk/dports/python/py-entrypoints/files/entrypoints.py</a></li>
<li><a href="#trunkdportspythonpyentrypointsfilessetuppy">trunk/dports/python/py-entrypoints/files/setup.py</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkdportspythonpyentrypointsPortfile"></a>
<div class="addfile"><h4>Added: trunk/dports/python/py-entrypoints/Portfile (0 => 147824)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/python/py-entrypoints/Portfile (rev 0)
+++ trunk/dports/python/py-entrypoints/Portfile 2016-04-17 00:00:55 UTC (rev 147824)
</span><span class="lines">@@ -0,0 +1,37 @@
</span><ins>+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim: fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
+# $Id$
+
+PortSystem 1.0
+PortGroup python 1.0
+
+name py-entrypoints
+version 0.2
+revision 0
+categories-append devel
+platforms darwin
+license BSD
+supported_archs noarch
+
+python.versions 27 34 35
+
+maintainers stromnov openmaintainer
+
+description Discover and load entry points from installed packages.
+long_description ${description}
+
+homepage https://github.com/takluyver/entrypoints
+master_sites pypi:[string index ${python.rootname} 0]/${python.rootname}
+
+distfiles
+
+if {${name} ne ${subport}} {
+
+ post-extract {
+ file mkdir ${worksrcpath}
+ file copy ${filespath}/setup.py ${filespath}/entrypoints.py ${worksrcpath}
+ }
+
+ livecheck.type none
+} else {
+ livecheck.type pypi
+}
</ins><span class="cx">Property changes on: trunk/dports/python/py-entrypoints/Portfile
</span><span class="cx">___________________________________________________________________
</span></span></pre></div>
<a id="svnkeywords"></a>
<div class="addfile"><h4>Added: svn:keywords</h4></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4>Added: svn:eol-style</h4></div>
<a id="trunkdportspythonpyentrypointsfilesentrypointspy"></a>
<div class="addfile"><h4>Added: trunk/dports/python/py-entrypoints/files/entrypoints.py (0 => 147824)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/python/py-entrypoints/files/entrypoints.py (rev 0)
+++ trunk/dports/python/py-entrypoints/files/entrypoints.py 2016-04-17 00:00:55 UTC (rev 147824)
</span><span class="lines">@@ -0,0 +1,204 @@
</span><ins>+"""Discover and load entry points from installed packages."""
+import configparser
+from contextlib import contextmanager
+import glob
+from importlib import import_module
+import io
+import itertools
+import os.path as osp
+import re
+import sys
+import warnings
+import zipfile
+
+entry_point_pattern = re.compile(r"""
+(?P<modulename>\w+(\.\w+)*)
+(:(?P<objectname>\w+(\.\w+)*))?
+\s*
+(\[(?P<extras>.+)\])?
+$
+""", re.VERBOSE)
+
+__version__ = '0.2'
+
+class BadEntryPoint(Exception):
+ """Raised when an entry point can't be parsed.
+ """
+ def __init__(self, epstr):
+ self.epstr = epstr
+
+ def __str__(self):
+ return "Couldn't parse entry point spec: %r" % self.epstr
+
+ @staticmethod
+ @contextmanager
+ def err_to_warnings():
+ try:
+ yield
+ except BadEntryPoint as e:
+ warnings.warn(str(e))
+
+class NoSuchEntryPoint(Exception):
+ """Raised by :func:`get_single` when no matching entry point is found."""
+ def __init__(self, group, name):
+ self.group = group
+ self.name = name
+
+ def __str__(self):
+ return "No {!r} entry point found in group {!r}".format(self.name, self.group)
+
+
+class EntryPoint(object):
+ def __init__(self, name, module_name, object_name, extras=None, distro=None):
+ self.name = name
+ self.module_name = module_name
+ self.object_name = object_name
+ self.extras = extras
+ self.distro = distro
+
+ def __repr__(self):
+ return "EntryPoint(%r, %r, %r, %r)" % \
+ (self.name, self.module_name, self.object_name, self.distro)
+
+ def load(self):
+ """Load the object to which this entry point refers.
+ """
+ mod = import_module(self.module_name)
+ obj = mod
+ if self.object_name:
+ for attr in self.object_name.split('.'):
+ obj = getattr(obj, attr)
+ return obj
+
+ @classmethod
+ def from_string(cls, epstr, name, distro=None):
+ """Parse an entry point from the syntax in entry_points.txt
+
+ :param str epstr: The entry point string (not including 'name =')
+ :param str name: The name of this entry point
+ :param Distribution distro: The distribution in which the entry point was found
+ :rtype: EntryPoint
+ :raises BadEntryPoint: if *epstr* can't be parsed as an entry point.
+ """
+ m = entry_point_pattern.match(epstr)
+ if m:
+ mod, obj, extras = m.group('modulename', 'objectname', 'extras')
+ if extras is not None:
+ extras = re.split(',\s*', extras)
+ return cls(name, mod, obj, extras, distro)
+ else:
+ raise BadEntryPoint(epstr)
+
+class Distribution(object):
+ def __init__(self, name, version):
+ self.name = name
+ self.version = version
+
+ def __repr__(self):
+ return "Distribution(%r, %r)" % (self.name, self.version)
+
+
+def iter_files_distros(path=None, repeated_distro='first'):
+ if path is None:
+ path = sys.path
+
+ # Distributions found earlier in path will shadow those with the same name
+ # found later. If these distributions used different module names, it may
+ # actually be possible to import both, but in most cases this shadowing
+ # will be correct.
+ distro_names_seen = set()
+
+ for folder in path:
+ if folder.rstrip('/\\').endswith('.egg'):
+ # Gah, eggs
+ egg_name = osp.basename(folder)
+ if '-' in egg_name:
+ distro = Distribution(*egg_name.split('-')[:2])
+
+ if (repeated_distro == 'first') \
+ and (distro.name in distro_names_seen):
+ continue
+ distro_names_seen.add(distro.name)
+ else:
+ distro = None
+
+ if osp.isdir(folder):
+ ep_path = osp.join(folder, 'EGG-INFO', 'entry_points.txt')
+ if osp.isfile(ep_path):
+ cp = configparser.ConfigParser()
+ cp.read(ep_path)
+ yield cp, distro
+
+ elif zipfile.is_zipfile(folder):
+ z = zipfile.ZipFile(folder)
+ try:
+ info = z.getinfo('EGG-INFO/entry_points.txt')
+ except KeyError:
+ continue
+ cp = configparser.ConfigParser()
+ with z.open(info) as f:
+ fu = io.TextIOWrapper(f)
+ cp.read_file(fu,
+ source=osp.join(folder, 'EGG-INFO', 'entry_points.txt'))
+ yield cp, distro
+
+ for path in itertools.chain(
+ glob.iglob(osp.join(folder, '*.dist-info', 'entry_points.txt')),
+ glob.iglob(osp.join(folder, '*.egg-info', 'entry_points.txt'))
+ ):
+ distro_name_version = osp.splitext(osp.basename(osp.dirname(path)))[0]
+ if '-' in distro_name_version:
+ distro = Distribution(*distro_name_version.split('-', 1))
+
+ if (repeated_distro == 'first') \
+ and (distro.name in distro_names_seen):
+ continue
+ distro_names_seen.add(distro.name)
+ else:
+ distro = None
+ cp = configparser.ConfigParser()
+ cp.read(path)
+ yield cp, distro
+
+def get_single(group, name, path=None):
+ """Find a single entry point.
+
+ Returns an :class:`EntryPoint` object, or raises :exc:`NoSuchEntryPoint`
+ if no match is found.
+ """
+ for config, distro in iter_files_distros(path=path):
+ if (group in config) and (name in config[group]):
+ epstr = config[group][name]
+ with BadEntryPoint.err_to_warnings():
+ return EntryPoint.from_string(epstr, name, distro)
+
+ raise NoSuchEntryPoint(group, name)
+
+def get_group_named(group, path=None):
+ """Find a group of entry points with unique names.
+
+ Returns a dictionary of names to :class:`EntryPoint` objects.
+ """
+ result = {}
+ for ep in get_group_all(group, path=path):
+ if ep.name not in result:
+ result[ep.name] = ep
+ return result
+
+def get_group_all(group, path=None):
+ """Find all entry points in a group.
+
+ Returns a list of :class:`EntryPoint` objects.
+ """
+ result = []
+ for config, distro in iter_files_distros(path=path):
+ if group in config:
+ for name, epstr in config[group].items():
+ with BadEntryPoint.err_to_warnings():
+ result.append(EntryPoint.from_string(epstr, name, distro))
+
+ return result
+
+if __name__ == '__main__':
+ import pprint
+ pprint.pprint(get_group_all('console_scripts'))
</ins></span></pre></div>
<a id="trunkdportspythonpyentrypointsfilessetuppy"></a>
<div class="addfile"><h4>Added: trunk/dports/python/py-entrypoints/files/setup.py (0 => 147824)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/python/py-entrypoints/files/setup.py (rev 0)
+++ trunk/dports/python/py-entrypoints/files/setup.py 2016-04-17 00:00:55 UTC (rev 147824)
</span><span class="lines">@@ -0,0 +1,11 @@
</span><ins>+from distutils.core import setup
+
+setup(
+ name='entrypoints',
+ version='0.2',
+ description='Discover and load entry points from installed packages.',
+ author='Thomas Kluyver',
+ author_email='thomas@kluyver.me.uk',
+ url='https://github.com/takluyver/entrypoints',
+ py_modules=['entrypoints'],
+)
</ins></span></pre>
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