feat: better mandatories support (centralized)

src/rougail/cli/__main__.py

@@ -27,7 +27,7 @@ from tiramisu.error import PropertiesOptionError
 from tiramisu import MetaConfig
 
 from rougail import Rougail
-from rougail.user_data import UserData
+from rougail.user_data import UserData, mandatories
 from rougail.config import get_rougail_config
 from rougail.utils import load_modules
 from rougail.error import RougailWarning
@@ -63,6 +63,10 @@ def _main(arguments, do_not_print):
             print(version)
         exit()
     layer_datas, metaconfig, config, err_warn = load_user_data(rougailconfig)
+    if config and (not rougailconfig["cli.load_config"] or not rougailconfig["cli.read_write"]):
+        config.property.read_only()
+    if rougailconfig["cli.mandatory"]:
+        mandatories(config, err_warn["errors"])
     output = get_output(rougailconfig,
                         metaconfig,
                         config,
@@ -106,7 +110,10 @@ def load_cmd_user_data(rougailconfig, arguments):
             for warning in user_data["warnings"]:
                 if isinstance(warning, dict):
                     for w, var in warning.items():
-                        warn(UserWarning(f'unable to load "{var.option.impl_get_display_name(var)}", {str(w)}'))
+                        if var:
+                            warn(UserWarning(f'unable to load "{var.option.impl_get_display_name(var)}", {str(w)}'))
+                        else:
+                            warn(UserWarning(f'{str(w)}'))
                 else:
                     warn(warning)
         if manage_warnings:
@@ -288,8 +295,6 @@ def load_user_data(rougailconfig):
 
 def get_output(rougailconfig, metaconfig, config, err_warn, layer_datas):
     # output
-    if config and (not rougailconfig["cli.load_config"] or not rougailconfig["cli.read_write"]):
-        config.property.read_only()
     output_name = rougailconfig["step.output"]
     path = Path(__file__).parent.parent / ("output_" + output_name) / "__init__.py"
     if not path.is_file():

src/rougail/cli/config.py

@@ -26,7 +26,6 @@ def get_rougail_config(
     options = f"""
 tiramisu_cache:
   redefine: true
-  hidden: true
   default:
     variable: _.cli.tiramisu_cache
 
@@ -100,6 +99,16 @@ cli:
 
   read_write: false  # {_('Configuration in output step is in read_write mode')}
 
+  mandatory:
+    description: {_('test mandatories variables')}
+    help: |-
+      {_("The configuration must be valid before process output. It's better to validate the values at the beginning of the process.")}
+    type: boolean
+    default:
+      jinja: |-
+        {{{{ cli.read_write == false }}}}
+      description: {_('if "cli.read_write" is false')}
+
   description_type:
     description: {_('Type of variables description')}
     alternative_name: cd