Fixed PATH handling on windows.

1 files changed, 10 insertions, 2 deletions

diff --git a/compressor/utils/__init__.py b/compressor/utils/__init__.py
index 699e37d..766943c 100644
--- a/compressor/utils/__init__.py
+++ b/compressor/utils/__init__.py
@@ -59,17 +59,25 @@ def walk(root, topdown=True, onerror=None, followlinks=False):
                         yield (link_dirpath, link_dirnames, link_filenames)
 
 
+def get_pathext(default_pathext=None):
+    """
+    Returns the path extensions from environment or a default
+    """
+    if default_pathext is None:
+        default_pathext = os.pathsep.join(['.COM', '.EXE', '.BAT', '.CMD'])
+    return os.environ.get('PATHEXT', default_pathext)
+
 def find_command(cmd, paths=None, pathext=None):
     """
     Searches the PATH for the given command and returns its path
     """
     if paths is None:
-        paths = os.environ.get('PATH', []).split(os.pathsep)
+        paths = os.environ.get('PATH', '').split(os.pathsep)
     if isinstance(paths, basestring):
         paths = [paths]
     # check if there are funny path extensions for executables, e.g. Windows
     if pathext is None:
-        pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD')
+        pathext = get_pathext()
     pathext = [ext for ext in pathext.lower().split(os.pathsep)]
     # don't use extensions if the command ends with one of them
     if os.path.splitext(cmd)[1].lower() in pathext: