From 48aac747cafd3aca44fc1fd4f0b6e5f072bb9879 Mon Sep 17 00:00:00 2001
From: hbristow <hilton.bristow@gmail.com>
Date: Tue, 6 Aug 2013 00:40:57 +1000
Subject: [PATCH] removed pkg_resources (setuptools) dependency from jinja.
 Matlab module now has no python dependencies beyond the core python libs

---
 modules/matlab/generator/gen_matlab.py      |  5 +-
 modules/matlab/generator/jinja2/__init__.py |  4 +-
 modules/matlab/generator/jinja2/loaders.py  | 65 ---------------------
 3 files changed, 5 insertions(+), 69 deletions(-)

diff --git a/modules/matlab/generator/gen_matlab.py b/modules/matlab/generator/gen_matlab.py
index f788c4a1b9..44b46fd949 100644
--- a/modules/matlab/generator/gen_matlab.py
+++ b/modules/matlab/generator/gen_matlab.py
@@ -26,7 +26,8 @@ class MatlabWrapperGenerator(object):
         parse_tree.build(ns)
        
         # setup the template engine
-        jtemplate = Environment(loader=PackageLoader('templates', ''), trim_blocks=True, lstrip_blocks=True)
+        template_dir = os.path.join(os.path.dirname(__file__), 'templates')
+        jtemplate    = Environment(loader=FileSystemLoader(template_dir), trim_blocks=True, lstrip_blocks=True)
 
         # add the custom filters
         jtemplate.filters['formatMatlabConstant'] = formatMatlabConstant
@@ -99,7 +100,7 @@ if __name__ == "__main__":
     from hdr_parser import CppHeaderParser
     from parse_tree import ParseTree, todict, constants
     from filters import *
-    from jinja2 import Environment, PackageLoader
+    from jinja2 import Environment, FileSystemLoader
 
     # get the IO from the command line arguments
     input_files = sys.argv[2:-1]
diff --git a/modules/matlab/generator/jinja2/__init__.py b/modules/matlab/generator/jinja2/__init__.py
index 8434dea180..fe9e8224d3 100644
--- a/modules/matlab/generator/jinja2/__init__.py
+++ b/modules/matlab/generator/jinja2/__init__.py
@@ -33,7 +33,7 @@ __version__ = '2.8-dev'
 from jinja2.environment import Environment, Template
 
 # loaders
-from jinja2.loaders import BaseLoader, FileSystemLoader, PackageLoader, \
+from jinja2.loaders import BaseLoader, FileSystemLoader, \
      DictLoader, FunctionLoader, PrefixLoader, ChoiceLoader, \
      ModuleLoader
 
@@ -58,7 +58,7 @@ from jinja2.utils import Markup, escape, clear_caches, \
 
 __all__ = [
     'Environment', 'Template', 'BaseLoader', 'FileSystemLoader',
-    'PackageLoader', 'DictLoader', 'FunctionLoader', 'PrefixLoader',
+    'DictLoader', 'FunctionLoader', 'PrefixLoader',
     'ChoiceLoader', 'BytecodeCache', 'FileSystemBytecodeCache',
     'MemcachedBytecodeCache', 'Undefined', 'DebugUndefined',
     'StrictUndefined', 'TemplateError', 'UndefinedError', 'TemplateNotFound',
diff --git a/modules/matlab/generator/jinja2/loaders.py b/modules/matlab/generator/jinja2/loaders.py
index a9a2625274..c19fd30db0 100644
--- a/modules/matlab/generator/jinja2/loaders.py
+++ b/modules/matlab/generator/jinja2/loaders.py
@@ -192,71 +192,6 @@ class FileSystemLoader(BaseLoader):
         return sorted(found)
 
 
-class PackageLoader(BaseLoader):
-    """Load templates from python eggs or packages.  It is constructed with
-    the name of the python package and the path to the templates in that
-    package::
-
-        loader = PackageLoader('mypackage', 'views')
-
-    If the package path is not given, ``'templates'`` is assumed.
-
-    Per default the template encoding is ``'utf-8'`` which can be changed
-    by setting the `encoding` parameter to something else.  Due to the nature
-    of eggs it's only possible to reload templates if the package was loaded
-    from the file system and not a zip file.
-    """
-
-    def __init__(self, package_name, package_path='templates',
-                 encoding='utf-8'):
-        from pkg_resources import DefaultProvider, ResourceManager, \
-                                  get_provider
-        provider = get_provider(package_name)
-        self.encoding = encoding
-        self.manager = ResourceManager()
-        self.filesystem_bound = isinstance(provider, DefaultProvider)
-        self.provider = provider
-        self.package_path = package_path
-
-    def get_source(self, environment, template):
-        pieces = split_template_path(template)
-        p = '/'.join((self.package_path,) + tuple(pieces))
-        if not self.provider.has_resource(p):
-            raise TemplateNotFound(template)
-
-        filename = uptodate = None
-        if self.filesystem_bound:
-            filename = self.provider.get_resource_filename(self.manager, p)
-            mtime = path.getmtime(filename)
-            def uptodate():
-                try:
-                    return path.getmtime(filename) == mtime
-                except OSError:
-                    return False
-
-        source = self.provider.get_resource_string(self.manager, p)
-        return source.decode(self.encoding), filename, uptodate
-
-    def list_templates(self):
-        path = self.package_path
-        if path[:2] == './':
-            path = path[2:]
-        elif path == '.':
-            path = ''
-        offset = len(path)
-        results = []
-        def _walk(path):
-            for filename in self.provider.resource_listdir(path):
-                fullname = path + '/' + filename
-                if self.provider.resource_isdir(fullname):
-                    _walk(fullname)
-                else:
-                    results.append(fullname[offset:].lstrip('/'))
-        _walk(path)
-        results.sort()
-        return results
-
-
 class DictLoader(BaseLoader):
     """Loads a template from a python dict.  It's passed a dict of unicode
     strings bound to template names.  This loader is useful for unittesting: