Moved Jinja utility functions to S++.

addons/jinja.py

@@ -0,0 +1,35 @@
+
+import pathlib
+
+Import('env')
+
+def _jinja_load_config(env, config_name):
+    searched_paths = []
+    for scons_path in env['JINJA_CONFIG_SEARCHPATH']:
+        if hasattr(scons_path, 'abspath'):
+            scons_path = scons_path.abspath
+        path = pathlib.Path(scons_path) / f'{config_name}.yml'
+        if path.exists():
+            with path.open('r') as file:
+                import yaml
+                return yaml.safe_load(file)
+        searched_paths.append(f'\n{path}')
+    joined_paths = ''.join(searched_paths)
+    raise Exception(f'Could not find Jinja config file "{config_name}.yml". Searched: {joined_paths}')
+def _wrap_jinja(orig_jinja):
+    def _wrapped(env, target, **kwargs):
+        if 'source' not in kwargs:
+            kwargs['source'] = f'{target}.jinja'
+        target = orig_jinja(**kwargs)
+        if 'depends' in kwargs:
+            for dependency in kwargs['depends']:
+                env.Depends(target, dependency)
+        # env.Depends(alias_prepare, target)
+        return target
+    return _wrapped
+
+env.AddMethod(_wrap_jinja(env.Jinja), 'Jinja')
+env.Append(JINJA_FILTERS = {'load_config': _jinja_load_config})
+env.Append(JINJA_TEMPLATE_SEARCHPATH = ['data/jinja'])
+env['JINJA_CONFIG_SEARCHPATH'] = [env.Dir('#data/config')]
+Return('env')