Prepare for moving editor and classref translations to godot-editor-l10n repo

- Separate editor interface and property translations.
- Add property translation in TranslationServer.
- The split and merge of the POT/PO/Makefiles and extract scripts is done
  directly in godot-editor-l10n, the files will be removed in the next commit.
- Remove the hardcoded "to_include" lists from the SCsub, we'll only commit the
  files which are ready to inclue.

10 files changed, 82 insertions, 11 deletions

diff --git a/core/string/translation.cpp b/core/string/translation.cpp
index 60dca8ebc6..b9d5d3b538 100644
--- a/core/string/translation.cpp
+++ b/core/string/translation.cpp
@@ -768,6 +768,20 @@ StringName TranslationServer::doc_translate_plural(const StringName &p_message,
 	return p_message_plural;
 }
 
+void TranslationServer::set_property_translation(const Ref<Translation> &p_translation) {
+	property_translation = p_translation;
+}
+
+StringName TranslationServer::property_translate(const StringName &p_message) const {
+	if (property_translation.is_valid()) {
+		StringName r = property_translation->get_message(p_message);
+		if (r) {
+			return r;
+		}
+	}
+	return p_message;
+}
+
 bool TranslationServer::is_pseudolocalization_enabled() const {
 	return pseudolocalization_enabled;
 }
diff --git a/core/string/translation.h b/core/string/translation.h
index 8646635eb8..01d239f81c 100644
--- a/core/string/translation.h
+++ b/core/string/translation.h
@@ -78,6 +78,7 @@ class TranslationServer : public Object {
 	HashSet<Ref<Translation>> translations;
 	Ref<Translation> tool_translation;
 	Ref<Translation> doc_translation;
+	Ref<Translation> property_translation;
 
 	bool enabled = true;
 
@@ -174,6 +175,8 @@ public:
 	void set_doc_translation(const Ref<Translation> &p_translation);
 	StringName doc_translate(const StringName &p_message, const StringName &p_context = "") const;
 	StringName doc_translate_plural(const StringName &p_message, const StringName &p_message_plural, int p_n, const StringName &p_context = "") const;
+	void set_property_translation(const Ref<Translation> &p_translation);
+	StringName property_translate(const StringName &p_message) const;
 
 	void setup();
 
diff --git a/editor/SCsub b/editor/SCsub
index 32ad88add5..dddec55ed6 100644
--- a/editor/SCsub
+++ b/editor/SCsub
@@ -75,10 +75,7 @@ if env.editor_build:
     # Generated with `make include-list` for each resource.
 
     # Editor translations
-    to_include = (
-        "ar,bg,ca,cs,de,el,eo,es_AR,es,fi,fr,gl,he,hu,id,it,ja,ko,lv,ms,nb,nl,pl,pt_BR,pt,ro,ru,sk,sv,th,tr,uk,vi,zh_CN,zh_TW"
-    ).split(",")
-    tlist = [env.Dir("#editor/translations").abspath + "/" + f + ".po" for f in to_include]
+    tlist = glob.glob(env.Dir("#editor/translations/editor").abspath + "/*.po")
     env.Depends("#editor/editor_translations.gen.h", tlist)
     env.CommandNoCache(
         "#editor/editor_translations.gen.h",
@@ -86,9 +83,17 @@ if env.editor_build:
         env.Run(editor_builders.make_editor_translations_header, "Generating editor translations header."),
     )
 
+    # Property translations
+    tlist = glob.glob(env.Dir("#editor/translations/properties").abspath + "/*.po")
+    env.Depends("#editor/property_translations.gen.h", tlist)
+    env.CommandNoCache(
+        "#editor/property_translations.gen.h",
+        tlist,
+        env.Run(editor_builders.make_property_translations_header, "Generating property translations header."),
+    )
+
     # Documentation translations
-    to_include = "de,es,fr,ja,zh_CN".split(",")
-    tlist = [env.Dir("#doc/translations").abspath + "/" + f + ".po" for f in to_include]
+    tlist = glob.glob(env.Dir("#doc/translations").abspath + "/*.po")
     env.Depends("#editor/doc_translations.gen.h", tlist)
     env.CommandNoCache(
         "#editor/doc_translations.gen.h",
diff --git a/editor/editor_builders.py b/editor/editor_builders.py
index 696e3b64ec..2a4f79548f 100644
--- a/editor/editor_builders.py
+++ b/editor/editor_builders.py
@@ -161,6 +161,10 @@ def make_editor_translations_header(target, source, env):
     make_translations_header(target, source, env, "editor")
 
 
+def make_property_translations_header(target, source, env):
+    make_translations_header(target, source, env, "property")
+
+
 def make_doc_translations_header(target, source, env):
     make_translations_header(target, source, env, "doc")
 
diff --git a/editor/editor_inspector.cpp b/editor/editor_inspector.cpp
index 42d8f48ea0..275e47e370 100644
--- a/editor/editor_inspector.cpp
+++ b/editor/editor_inspector.cpp
@@ -2974,11 +2974,11 @@ void EditorInspector::update_tree() {
 				// Only process group label if this is not the group or subgroup.
 				if ((i == 0 && component == group) || (i == 1 && component == subgroup)) {
 					if (section_name_style == EditorPropertyNameProcessor::STYLE_LOCALIZED) {
-						label = TTRGET(component);
+						label = EditorPropertyNameProcessor::get_singleton()->translate_group_name(component);
 						tooltip = component;
 					} else {
 						label = component;
-						tooltip = TTRGET(component);
+						tooltip = EditorPropertyNameProcessor::get_singleton()->translate_group_name(component);
 					}
 				} else {
 					label = EditorPropertyNameProcessor::get_singleton()->process_name(component, section_name_style);
diff --git a/editor/editor_property_name_processor.cpp b/editor/editor_property_name_processor.cpp
index 5380fddde2..a183e62618 100644
--- a/editor/editor_property_name_processor.cpp
+++ b/editor/editor_property_name_processor.cpp
@@ -30,6 +30,7 @@
 
 #include "editor_property_name_processor.h"
 
+#include "core/string/translation.h"
 #include "editor_settings.h"
 
 EditorPropertyNameProcessor *EditorPropertyNameProcessor::singleton = nullptr;
@@ -92,18 +93,30 @@ String EditorPropertyNameProcessor::process_name(const String &p_name, Style p_s
 		} break;
 
 		case STYLE_LOCALIZED: {
-			return TTRGET(_capitalize_name(p_name));
+			const String capitalized = _capitalize_name(p_name);
+			if (TranslationServer::get_singleton()) {
+				return TranslationServer::get_singleton()->property_translate(capitalized);
+			}
+			return capitalized;
 		} break;
 	}
 	ERR_FAIL_V_MSG(p_name, "Unexpected property name style.");
 }
 
+String EditorPropertyNameProcessor::translate_group_name(const String &p_name) const {
+	if (TranslationServer::get_singleton()) {
+		return TranslationServer::get_singleton()->property_translate(p_name);
+	}
+	return p_name;
+}
+
 EditorPropertyNameProcessor::EditorPropertyNameProcessor() {
 	ERR_FAIL_COND(singleton != nullptr);
 	singleton = this;
 
-	// The following initialization is parsed in `editor/translations/extract.py` with a regex.
+	// The following initialization is parsed by the l10n extraction script with a regex.
 	// The map name and value definition format should be kept synced with the regex.
+	// https://github.com/godotengine/godot-editor-l10n/blob/main/scripts/common.py
 	capitalize_string_remaps["2d"] = "2D";
 	capitalize_string_remaps["3d"] = "3D";
 	capitalize_string_remaps["aa"] = "AA";
@@ -263,7 +276,7 @@ EditorPropertyNameProcessor::EditorPropertyNameProcessor() {
 	capitalize_string_remaps["yz"] = "YZ";
 
 	// Articles, conjunctions, prepositions.
-	// The following initialization is parsed in `editor/translations/extract.py` with a regex.
+	// The following initialization is parsed in `editor/translations/scripts/common.py` with a regex.
 	// The word definition format should be kept synced with the regex.
 	stop_words = LocalVector<String>({
 			"a",
diff --git a/editor/editor_property_name_processor.h b/editor/editor_property_name_processor.h
index f32cb9f43a..8e3cecb45b 100644
--- a/editor/editor_property_name_processor.h
+++ b/editor/editor_property_name_processor.h
@@ -64,6 +64,9 @@ public:
 	// Turns property path segment into the given style.
 	String process_name(const String &p_name, Style p_style) const;
 
+	// Translate plain text group names.
+	String translate_group_name(const String &p_name) const;
+
 	EditorPropertyNameProcessor();
 	~EditorPropertyNameProcessor();
 };
diff --git a/editor/editor_settings.cpp b/editor/editor_settings.cpp
index 1c988840ac..8eb2551843 100644
--- a/editor/editor_settings.cpp
+++ b/editor/editor_settings.cpp
@@ -922,6 +922,7 @@ void EditorSettings::setup_language() {
 	}
 	// Load editor translation for configured/detected locale.
 	load_editor_translations(lang);
+	load_property_translations(lang);
 
 	// Load class reference translation.
 	load_doc_translations(lang);
diff --git a/editor/editor_translation.cpp b/editor/editor_translation.cpp
index 426daad823..54a9d2f068 100644
--- a/editor/editor_translation.cpp
+++ b/editor/editor_translation.cpp
@@ -35,6 +35,7 @@
 #include "core/io/translation_loader_po.h"
 #include "editor/doc_translations.gen.h"
 #include "editor/editor_translations.gen.h"
+#include "editor/property_translations.gen.h"
 
 Vector<String> get_editor_locales() {
 	Vector<String> locales;
@@ -101,3 +102,29 @@ void load_doc_translations(const String &p_locale) {
 		dtl++;
 	}
 }
+
+void load_property_translations(const String &p_locale) {
+	PropertyTranslationList *etl = _property_translations;
+	while (etl->data) {
+		if (etl->lang == p_locale) {
+			Vector<uint8_t> data;
+			data.resize(etl->uncomp_size);
+			int ret = Compression::decompress(data.ptrw(), etl->uncomp_size, etl->data, etl->comp_size, Compression::MODE_DEFLATE);
+			ERR_FAIL_COND_MSG(ret == -1, "Compressed file is corrupt.");
+
+			Ref<FileAccessMemory> fa;
+			fa.instantiate();
+			fa->open_custom(data.ptr(), data.size());
+
+			Ref<Translation> tr = TranslationLoaderPO::load_translation(fa);
+
+			if (tr.is_valid()) {
+				tr->set_locale(etl->lang);
+				TranslationServer::get_singleton()->set_property_translation(tr);
+				break;
+			}
+		}
+
+		etl++;
+	}
+}
diff --git a/editor/editor_translation.h b/editor/editor_translation.h
index 3717d0cbf5..bd6db32536 100644
--- a/editor/editor_translation.h
+++ b/editor/editor_translation.h
@@ -37,5 +37,6 @@
 Vector<String> get_editor_locales();
 void load_editor_translations(const String &p_locale);
 void load_doc_translations(const String &p_locale);
+void load_property_translations(const String &p_locale);
 
 #endif // EDITOR_TRANSLATION_H