j2cfg: improve loading

- provide almost all implemented helper functions as functions and filters (was: only filters)
- improve diagnostic messages during load

j2cfg/j2cfg/__init__.py

@@ -8,8 +8,8 @@ import jinja2
 import wcmatch.wcmatch
 import yaml
 
-from .functions import *
 from .settings import *
+from .functions import *
 
 
 J2CFG_CONFIG_EXT = ['yml', 'yaml', 'json']
@@ -161,12 +161,6 @@ class J2cfg:
             'env_vars_preserve': J2CFG_PRESERVE_ENVS,
             'env_vars_passthrough': J2CFG_PASSTHROUGH_ENVS,
         })
-        for m in self.modules:
-            if m in self.kwargs:
-                print(f'J2cfg: kwargs already has {m} key',
-                      file=sys.stderr)
-                continue
-            self.kwargs[m] = importlib.import_module(m)
 
         self.j2fs_loaders = {
             d: jinja2.FileSystemLoader(
@@ -181,13 +175,26 @@ class J2cfg:
         )
 
         def init_env(e: jinja2.Environment):
+            for m in self.modules:
+                if m in e.globals:
+                    print(f'J2cfg: globals already has {m} key, module will not be imported',
+                          file=sys.stderr)
+                    continue
+                e.globals.update({m: importlib.import_module(m)})
+            for s in J2CFG_FUNCTIONS:
+                n = s.__name__
+                if n in e.globals:
+                    print(f'J2cfg: globals already has {n} key, function will not be imported',
+                          file=sys.stderr)
+                    continue
+                e.globals.update({n: s})
             for s in J2CFG_FILTERS:
                 n = s.__name__
                 if n in e.filters:
-                    print(f'J2cfg: filters already has {n} key',
+                    print(f'J2cfg: filters already has {n} key, filter will not be imported',
                           file=sys.stderr)
                     continue
-                e.filters[n] = s
+                e.filters.update({n: s})
 
         init_env(self.j2env)
 

j2cfg/j2cfg/functions.py

@@ -354,7 +354,7 @@ def join_prefix(prefix: str, *paths) -> str:
     return rv
 
 
-J2CFG_FILTERS = [
+J2CFG_FUNCTIONS = [
     any_to_env_dict,
     any_to_str_list,
     as_cgi_hdr,
@@ -380,8 +380,11 @@ J2CFG_FILTERS = [
     re_sub,
     remove_empty_str,
     remove_non_str,
-    sh_like_file_to_list,
     str_split_to_list,
     uniq,
     uniq_str_list,
 ]
+
+J2CFG_FILTERS = J2CFG_FUNCTIONS + [
+    sh_like_file_to_list,
+]