diff corebio/_future/__init__.py @ 0:c55bdc2fb9fa

Uploaded

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/corebio/_future/__init__.py	Thu Oct 27 12:09:09 2011 -0400
@@ -0,0 +1,78 @@
+
+"""
+Private compatability module for running under python version 2.3.
+    
+Replacement for 
+  o  string.Template    -- introduced in python 2.4
+  o  subprocess         -- introduced in python 2.4
+  
+  o  resource_string    -- introduced in pkg_resource of setuptools
+  o  resource_stream
+  o  resource_filename
+
+from string import Template -> from corebio._future import Template
+
+"""
+
+
+try :
+    import pkg_resources
+except ImportError :
+    pkg_resources = None
+
+
+try :
+    from string import Template
+except ImportError :
+    from _string import Template
+
+
+
+
+def resource_string( modulename, resource, basefilename = None):
+    """Locate and return a resource as a string.
+    >>> f = resource_string( __name, 'somedatafile', __file__)
+    """
+    if pkg_resources : 
+        return pkg_resources.resource_string(modulename, resource)    
+    
+    f = resource_stream( modulename, resource, basefilename)
+    return f.read()
+    
+def resource_stream( modulename, resource, basefilename = None):
+    """Locate and return a resource as a stream.
+    >>> f = resource_stream( __name__, 'somedatafile', __file__)
+    """    
+    if pkg_resources :  
+        return pkg_resources.resource_stream(modulename, resource)    
+    
+    return open( resource_filename( modulename, resource, basefilename) )
+
+def resource_filename( modulename, resource, basefilename = None): 
+    """Locate and return a resource filename.
+    >>> f = resource_stream( __name__, 'somedatafile', __file__)
+
+    A resource is a data file stored with the python code in a package.
+    All three resource methods (resource_string,  resource_stream,
+    resource_filename) call the corresponding methods in the 'pkg_resources'
+    module, if installed. Otherwise, we resort to locating the resource
+    in the local filesystem. However, this does not work if the package
+    is located inside a zip file. 
+    """ 
+    if pkg_resources : 
+        return pkg_resources.resource_filename(modulename, resource)            
+    
+    if basefilename is None :
+        raise NotImplementedError(
+            "Require either basefilename or pkg_resources")
+    
+    import os
+    return os.path.join(os.path.dirname(basefilename), resource)
+
+
+
+
+
+
+
+
\ No newline at end of file