Minor changes

.idea/inspectionProfiles/profiles_settings.xml

@@ -1,5 +1,6 @@
 <component name="InspectionProjectProfileManager">
   <settings>
+    <option name="PROJECT_PROFILE" value="Default" />
     <option name="USE_PROJECT_PROFILE" value="false" />
     <version value="1.0" />
   </settings>

src/renderTemplate.py

@@ -24,8 +24,10 @@ infilegroup.add_argument('--toml', dest='toml_file', type=str, required=False,
 infilegroup.add_argument('--ini', dest='ini_file', type=str, required=False,
                          help='INI fil path')
 infilegroup.add_argument('--env', dest='env_file', action='store_true',
-                         help='Load environment variables')
+                         help='Load environment variables (from .env)')
 
+argsparser.add_argument('--showvars', dest='show_vars', action='store_true',
+                        help='Show all input variables and exit')
 argsparser.add_argument('--output', default='/dev/stdout',
                         help='Output File')
 argsparser.add_argument('infile', metavar="input-file",
@@ -33,8 +35,8 @@ argsparser.add_argument('infile', metavar="input-file",
 
 
 # Print Errors
-def print_error(*args, **kwargs):
-    print(*args, file=sys.stderr, **kwargs)
+def print_error(*cmdargs, **kwargs):
+    print(*cmdargs, file=sys.stderr, **kwargs)
 
 
 # Jinja Environment
@@ -46,6 +48,7 @@ jenv = Environment(autoescape=True,
 
 
 # Jinja Context Functions
+# -----------------------
 @jinja2.pass_context
 def get_filtered_variables(c, filter_str=None):
     ret_val = {}
@@ -89,16 +92,20 @@ jenv.filters['hostbyname'] = filter_hostbyname
 
 jenv.globals['variables'] = get_filtered_variables
 
+
 # Loader
 # ------
 def load_template(filename):
     try:
         with open(filename) as file_:
-            template = jenv.from_string(file_.read())
-        return template
+            input_template = jenv.from_string(file_.read())
+        return input_template
     except TemplateError as exc:
-        print_error("Template Error:", exc.message)
-        return None
+        print_error("ERROR: Reading template failed:", exc.message)
+    except FileNotFoundError:
+        print_error("ERROR:", filename, "- Template file not found")
+
+    return None
 
 
 def load_yaml_file(filename):
@@ -122,7 +129,7 @@ def load_toml_file(filename):
             except toml.TomlDecodeError as exc:
                 print_error("TOML error:", exc)
     else:
-        print_error("ERROR:", filename, "- File not found")
+        print_error("ERROR:", filename, "- TOML Input file not found")
 
     return None
 
@@ -135,7 +142,7 @@ def load_json_file(filename):
             except json.JSONDecodeError as exc:
                 print_error("JSON error: [", exc.lineno, ",", exc.colno, "]", exc.msg)
     else:
-        print_error("ERROR:", filename, "- File not found")
+        print_error("ERROR:", filename, "- JSON Input file not found")
 
     return None
 
@@ -146,36 +153,34 @@ def load_ini_file(filename):
         iniparser.read(filename)
         return iniparser.items()
     else:
-        print_error("ERROR:", filename, "- File not found")
+        print_error("ERROR:", filename, "- INI Input file not found")
 
     return None
 
 
 # Render
 # ------
-def render_template(template, outfile, variables=None):
+def render_template(tpl, outfile, variables=None):
     try:
         with open(outfile, 'w') as file_:
-            file_.write(template.render(variables)) if variables else file_.write(template.render())
-
+            output_content = tpl.render(variables) if variables else tpl.render()
+            file_.write(output_content)
     except TemplateError as exc:
         print_error("Rendering Error:", exc.message)
-        print_error("Values:")
-        for i, v in variables.items():
-            print_error(" %s = %s", i, v)
 
 
 if __name__ == '__main__':
     # Read command line arguments
     args = argsparser.parse_args()
 
-    tpl = load_template(args.infile)
+    # Load template file to ram
+    template = load_template(args.infile)
     content = None
 
-    # If template was found
-    if tpl:
+    if template:
+        # If template was found
         if args.env_file:
-            content = os.environ | dotenv_values("../test/.env")
+            content = os.environ | dotenv_values(".env")
         elif args.yaml_file:
             content = load_yaml_file(args.yaml_file)
         elif args.json_file:
@@ -185,9 +190,12 @@ if __name__ == '__main__':
         elif args.ini_file:
             content = load_ini_file(args.ini_file)
 
-        # Render template with or without external content
-        render_template(tpl, args.output, content) if content else render_template(tpl, args.output)
-    else:
-        exit(1)
+        if content:
+            if args.show_vars:
+                for i, v in content.items():
+                    print_error(i, "=", v)
+            else:
+                # Render template with or without external content
+                render_template(template, args.output, content) if content else render_template(template, args.output)
 
     exit(0)