# HG changeset patch
# User Jeff Hammel <jhammel@mozilla.com>
# Date 1358989176 28800
# Node ID 13767ee2ddf466e09d3314fdea359f5b87069c76
# Parent  d5e5c74967842fb710463498250ee9c80edcfb9c
start adding an egg_info based information thingy

diff -r d5e5c7496784 -r 13767ee2ddf4 paint/info.py
--- a/paint/info.py	Wed Jan 23 16:26:14 2013 -0800
+++ b/paint/info.py	Wed Jan 23 16:59:36 2013 -0800
@@ -4,6 +4,7 @@
 
 import imp
 import os
+import subprocess
 import sys
 
 from subprocess import check_call as call
@@ -50,7 +51,26 @@
     """
 
     def __call__(self):
-        raise NotImplementedError("TODO")
+
+        info = self.read_pkg_info(self._pkg_info())
+        # TODO: install_requires
+        return info
+
+    @classmethod
+    def read_pkg_info(cls, path):
+        """reads PKG-INFO and returns a dict"""
+
+        # read the package information
+        info_dict = {}
+        for line in file(path).readlines():
+            if not line or line[0].isspace():
+                continue # XXX neglects description
+            assert ':' in line
+            key, value = [i.strip() for i in line.split(':', 1)]
+            info_dict[key] = value
+
+        # return the information
+        return info_dict
 
     def _egg_info(self):
         """build the egg_info directory"""
@@ -58,4 +78,46 @@
         if self._egg_info_path:
             return self._egg_info_path
 
-        raise NotImplementedError("TODO")
+        directory = os.path.dirname(self.setup_py)
+
+        # setup the egg info
+        try:
+            call([sys.executable, 'setup.py', 'egg_info'], cwd=directory, stdout=subprocess.PIPE)
+        except Exception:
+            print "Failure to generate egg_info: %s" % self.setup_py
+            raise
+
+        # get the .egg-info directory
+        egg_info = [i for i in os.listdir(directory)
+                    if i.endswith('.egg-info')]
+        assert len(egg_info) == 1, 'Expected one .egg-info directory in %s, got: %s' % (directory, egg_info)
+        egg_info = os.path.join(directory, egg_info[0])
+        assert os.path.isdir(egg_info), "%s is not a directory" % egg_info
+
+        # cache it
+        self._egg_info_path = egg_info
+        return self._egg_info_path
+
+    def _pkg_info(self):
+        """returns path to PKG-INFO file"""
+
+        if self._pkg_info_path:
+            # return cached value
+            return self._pkg_info_path
+
+        try:
+            egg_info = self._egg_info()
+        except Exception, exception:
+            # try to get the package info from a file
+            path = os.path.dirname(self.setup_py)
+            pkg_info = os.path.join(path, 'PKG-INFO')
+            if os.path.exists(pkg_info):
+                self._pkg_info_path = pkg_info
+                return self._pkg_info_path
+            raise Exception("Cannot find or generate PKG-INFO")
+
+        pkg_info = os.path.join(egg_info, 'PKG-INFO')
+        assert os.path.exists(pkg_info)
+        self._pkg_info_path = pkg_info
+        return self._pkg_info_path
+
diff -r d5e5c7496784 -r 13767ee2ddf4 paint/package.py
--- a/paint/package.py	Wed Jan 23 16:26:14 2013 -0800
+++ b/paint/package.py	Wed Jan 23 16:59:36 2013 -0800
@@ -200,7 +200,6 @@
             info_dict[key] = value
 
         # return the information
-        print ">>> Info: %s" % info_dict
         return info_dict
 
     def dependencies(self):