ini-parser: emit errors for options not part of the XML spec

src/compound-option.cpp

@@ -60,10 +60,10 @@ void wf::config::update_compound_from_section(
         value[0] = suffix;
         for (size_t i = 0; i < entries.size(); ++i)
         {
-            if (const auto & entry_option =
-                    section->get_option_or(entries[i]->get_prefix() + suffix);
+            if (const auto & entry_option = section->get_option_or(entries[i]->get_prefix() + suffix);
                 entry_option && !should_ignore_option(entry_option))
             {
+                entry_option->priv->could_be_compound = true;
                 if (entries[i]->is_parsable(entry_option->get_value_str()))
                 {
                     value[i + 1] = entry_option->get_value_str();
@@ -83,9 +83,6 @@ void wf::config::update_compound_from_section(
                 value[i + 1] = *default_value;
             } else
             {
-                LOGE("The option ",
-                    section->get_name() + "/" + entries[i]->get_prefix() + suffix,
-                    " is neither specified nor has a default value");
                 value.clear();
                 break;
             }
@@ -94,6 +91,14 @@ void wf::config::update_compound_from_section(
         if (!value.empty())
         {
             stored_value.push_back(std::move(value));
+            for (size_t i = 0; i < entries.size(); ++i)
+            {
+                if (auto entry_option = section->get_option_or(entries[i]->get_prefix() + suffix))
+                {
+                    // The option was used as part of the compound option, do not issue warning for it!
+                    entry_option->priv->is_part_compound = true;
+                }
+            }
         }
     }
 

src/file.cpp

@@ -353,6 +353,10 @@ void wf::config::load_configuration_options_from_string(
         for (auto opt : section->get_registered_options())
         {
             opt->priv->option_in_config_file = (reloaded.count(opt) > 0);
+
+            opt->priv->is_part_compound  = false; // will be re-set when updating compound options
+            opt->priv->could_be_compound = false; // will be re-set when updating compound options
+
             if (!opt->priv->option_in_config_file && !opt->is_locked())
             {
                 opt->reset_to_default();
@@ -373,6 +377,27 @@ void wf::config::load_configuration_options_from_string(
             }
         }
     }
+
+    for (auto section : config.get_all_sections())
+    {
+        for (auto opt : section->get_registered_options())
+        {
+            if (!opt->priv->xml && !opt->priv->is_part_compound)
+            {
+                if (opt->priv->could_be_compound)
+                {
+                    LOGW("Option ", section->get_name(), "/", opt->get_name(),
+                        " could not be parsed as part of a compound option: missing entries or wrong type!");
+                } else
+                {
+                    LOGW("Loaded option ", section->get_name(), "/", opt->get_name(),
+                        ", which does not belong to any registered plugin, nor could be parsed as a part of ",
+                        "a compound list option. Make sure all the relevant XML files are installed and "
+                        "that the option name is spelled correctly!");
+                }
+            }
+        }
+    }
 }
 
 std::string wf::config::save_configuration_options_to_string(

src/option-impl.hpp

@@ -6,21 +6,6 @@
 #include <libxml/tree.h>
 #include <stdint.h>
 
-struct wf::config::option_base_t::impl
-{
-    std::string name;
-    wf::safe_list_t<updated_callback_t*> updated_handlers;
-
-    // Number of times the option has been locked
-    int32_t lock_count = 0;
-
-    // Associated XML node
-    xmlNode *xml;
-
-    // Is option in config file?
-    bool option_in_config_file = false;
-};
-
 namespace wf
 {
 namespace config
@@ -37,3 +22,23 @@ void update_compound_from_section(compound_option_t& option,
     const std::shared_ptr<section_t>& section);
 }
 }
+
+struct wf::config::option_base_t::impl
+{
+    std::string name;
+    wf::safe_list_t<updated_callback_t*> updated_handlers;
+
+    // Number of times the option has been locked
+    int32_t lock_count = 0;
+
+    // Associated XML node
+    xmlNode *xml = nullptr;
+
+    // Is option in config file?
+    bool option_in_config_file = false;
+
+    // Is option part of a successfully parsed compound option?
+    bool is_part_compound = false;
+    // Does this option match a compound option in part at least?
+    bool could_be_compound = false;
+};

test/file_test.cpp

@@ -94,6 +94,10 @@ TEST_CASE("wf::config::load_configuration_options_from_string")
     EXPECT_LINE(log, "Error in file test:5");
     EXPECT_LINE(log, "Error in file test:20");
     EXPECT_LINE(log, "Error in file test:21");
+
+    // reset logging state for subsequent tests
+    wf::log::initialize_logging(std::cout, wf::log::LOG_LEVEL_DEBUG,
+        wf::log::LOG_COLOR_MODE_OFF);
 }
 
 TEST_CASE("wf::config::load_configuration_options_from_string - "