From 41274688299db4c25199e77ca1b4583fe4d6ea98 Mon Sep 17 00:00:00 2001
From: Fabien Meghazi <fme@openerp.com>
Date: Fri, 7 Nov 2014 16:07:54 +0100
Subject: [PATCH] [ADD] ir.qweb FileSystemLoader

---
 openerp/addons/base/ir/ir_qweb.py      | 21 +++++++++++++++++++++
 openerp/addons/base/tests/test_qweb.py | 13 +++++++------
 2 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/openerp/addons/base/ir/ir_qweb.py b/openerp/addons/base/ir/ir_qweb.py
index ae1ddfadb4f..e9421aa3524 100644
--- a/openerp/addons/base/ir/ir_qweb.py
+++ b/openerp/addons/base/ir/ir_qweb.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 import collections
+import copy
 import cStringIO
 import datetime
 import hashlib
@@ -61,6 +62,26 @@ def raise_qweb_exception(etype=None, **kw):
         e.qweb['cause'] = original
         raise
 
+class FileSystemLoader(object):
+    def __init__(self, path):
+        # TODO: support multiple files #add_file() + add cache
+        self.path = path
+        self.doc = etree.parse(path).getroot()
+
+    def __iter__(self):
+        for node in self.doc:
+            name = node.get('t-name')
+            if name:
+                yield name
+
+    def __call__(self, name):
+        for node in self.doc:
+            if node.get('t-name') == name:
+                root = etree.Element('templates')
+                root.append(copy.deepcopy(node))
+                arch = etree.tostring(root, encoding='utf-8', xml_declaration=True)
+                return arch
+
 class QWebContext(dict):
     def __init__(self, cr, uid, data, loader=None, templates=None, context=None):
         self.cr = cr
diff --git a/openerp/addons/base/tests/test_qweb.py b/openerp/addons/base/tests/test_qweb.py
index 9ac4388cbe2..82bc0ade76d 100644
--- a/openerp/addons/base/tests/test_qweb.py
+++ b/openerp/addons/base/tests/test_qweb.py
@@ -7,7 +7,7 @@ import re
 import collections
 
 from lxml import etree
-import openerp.addons.base.ir.ir_qweb
+from openerp.addons.base.ir.ir_qweb import QWebContext, FileSystemLoader
 import openerp.modules
 
 from openerp.tests import common
@@ -112,12 +112,13 @@ class TestQWeb(common.TransactionCase):
         return lambda: self.run_test_file(os.path.join(path, f))
 
     def run_test_file(self, path):
-        context = openerp.addons.base.ir.ir_qweb.QWebContext(self.cr, self.uid, {})
-        qweb = self.env['ir.qweb']
         doc = etree.parse(path).getroot()
-        qweb.load_document(doc, None, context)
-        for template in context.templates:
-            if template.startswith('_'): continue
+        loader = FileSystemLoader(path)
+        context = QWebContext(self.cr, self.uid, {}, loader=loader)
+        qweb = self.env['ir.qweb']
+        for template in loader:
+            if not template or template.startswith('_'):
+                continue
             param = doc.find('params[@id="{}"]'.format(template))
             # OrderedDict to ensure JSON mappings are iterated in source order
             # so output is predictable & repeatable