locales init

Signed-off-by: Nicolas Adenis-Lamarre <nicolas.adenis.lamarre@gmail.com>

Author: nadenislamarre

.gitignore

@@ -2,6 +2,7 @@
 *.slo
 *.lo
 *.o
+*.mo
 
 # Compiled Dynamic libraries
 *.so

CMakeLists.txt

@@ -235,6 +235,17 @@ else()
     endif()
 endif()
 
+# i18n
+find_program (MSGFMT_EXECUTABLE msgfmt)
+find_program (MSGMERGE_EXECUTABLE msgmerge)
+find_program (XGETTEXT_EXECUTABLE xgettext)
+if(MSGFMT_EXECUTABLE AND MSGMERGE_EXECUTABLE AND XGETTEXT_EXECUTABLE)
+  message (STATUS "Native language support enabled.")
+  add_definitions(-DHAVE_GETTEXT)
+  add_subdirectory (locale)
+endif()
+add_definitions(-DINSTALLATION_PREFIX_DIR=\"${CMAKE_INSTALL_PREFIX}\")
+
 #-------------------------------------------------------------------------------
 # set up build directories
 set(dir ${CMAKE_CURRENT_SOURCE_DIR})

es-app/src/main.cpp

@@ -24,6 +24,7 @@
 #ifdef WIN32
 #include <Windows.h>
 #endif
+#include "LocaleES.h"
 
 #include <FreeImage.h>
 
@@ -196,6 +197,28 @@ bool verifyHomeFolderExists()
 	return true;
 }
 
+void locales_init() {
+#ifdef HAVE_GETTEXT
+  char* btd;
+  char* cs;
+
+#define LOCALEDIR INSTALLATION_PREFIX_DIR "/share/locale"
+// local dir ; uncomment if you want to use locally compiled .mo files instead of .mo from the installation dir (present only after make install)
+//#define LOCALEDIR "./locale/lang"
+
+  setlocale (LC_MESSAGES, "");
+  textdomain("emulationstation");
+  if((btd=bindtextdomain("emulationstation", LOCALEDIR)) == NULL) {
+    return;
+  }
+
+  cs = bind_textdomain_codeset("emulationstation", "UTF-8");
+  if(cs == NULL) {
+    /* outch not enough memory, no real thing to do */
+  }
+#endif
+}
+
 // Returns true if everything is OK,
 bool loadSystemConfigFile(const char** errorString)
 {
@@ -287,6 +310,9 @@ int main(int argc, char* argv[])
 	//always close the log on exit
 	atexit(&onExit);
 
+	// Set locale
+	locales_init();
+
 	Window window;
 	SystemScreenSaver screensaver(&window);
 	PowerSaver::init();
@@ -311,9 +337,9 @@ int main(int argc, char* argv[])
 		LOG(LogInfo) << " ARB_texture_non_power_of_two: " << (glExts.find("ARB_texture_non_power_of_two") != std::string::npos ? "ok" : "MISSING");
 		if(splashScreen)
 		{
-			std::string progressText = "Loading...";
+			std::string progressText = _("Loading...");
 			if (splashScreenProgress)
-				progressText = "Loading system config...";
+				progressText = _("Loading system config...");
 			window.renderLoadingScreen(progressText);
 		}
 	}
@@ -333,7 +359,7 @@ int main(int argc, char* argv[])
 		// we can't handle es_systems.cfg file problems inside ES itself, so display the error message then quit
 		window.pushGui(new GuiMsgBox(&window,
 			errorMsg,
-			"QUIT", [] {
+			_("QUIT"), [] {
 				SDL_Event* quit = new SDL_Event();
 				quit->type = SDL_QUIT;
 				SDL_PushEvent(quit);
@@ -354,7 +380,7 @@ int main(int argc, char* argv[])
 	ViewController::get()->preload();
 
 	if(splashScreen && splashScreenProgress)
-		window.renderLoadingScreen("Done.");
+		window.renderLoadingScreen(_("Done."));
 
 	//choose which GUI to open depending on if an input configuration already exists
 	if(errorMsg == NULL)

es-app/src/views/SystemView.cpp

@@ -9,6 +9,7 @@
 #include "Settings.h"
 #include "SystemData.h"
 #include "Window.h"
+#include "LocaleES.h"
 
 // buffer values for scrolling velocity (left, stopped, right)
 const int logoBuffersLeft[] = { -5, -2, -1 };
@@ -255,11 +256,14 @@ void SystemView::onCursorChanged(const CursorState& /*state*/)
 	// also change the text after we've fully faded out
 	setAnimation(infoFadeOut, 0, [this, gameCount] {
 		std::stringstream ss;
+		char strbuf[256];
 
 		if (!getSelected()->isGameSystem())
 			ss << "CONFIGURATION";
-		else
-			ss << gameCount << " GAMES AVAILABLE";
+		else {
+		  snprintf(strbuf, 256, ngettext("%i GAME AVAILABLE", "%i GAMES AVAILABLE", gameCount), gameCount);
+		  ss << strbuf;
+		}
 
 		mSystemInfo.setText(ss.str());
 	}, false, 1);

es-core/CMakeLists.txt

@@ -12,6 +12,7 @@ set(CORE_HEADERS
 	${CMAKE_CURRENT_SOURCE_DIR}/src/InputManager.h
 	${CMAKE_CURRENT_SOURCE_DIR}/src/Log.h
 	${CMAKE_CURRENT_SOURCE_DIR}/src/MameNames.h
+	${CMAKE_CURRENT_SOURCE_DIR}/src/LocaleES.h
 	${CMAKE_CURRENT_SOURCE_DIR}/src/platform.h
 	${CMAKE_CURRENT_SOURCE_DIR}/src/PowerSaver.h
 	${CMAKE_CURRENT_SOURCE_DIR}/src/Renderer.h
@@ -88,6 +89,7 @@ set(CORE_SOURCES
 	${CMAKE_CURRENT_SOURCE_DIR}/src/InputManager.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/src/Log.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/src/MameNames.cpp
+	${CMAKE_CURRENT_SOURCE_DIR}/src/LocaleES.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/src/platform.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/src/PowerSaver.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/src/Renderer_draw_gl.cpp

es-core/src/LocaleES.cpp

@@ -0,0 +1,10 @@
+#include "LocaleES.h"
+
+#ifndef HAVE_GETTEXT
+char* ngettext(char* msgid, char* msgid_plural, unsigned long int n) {
+  if(n > 1) {
+    return msgid_plural;
+  }
+  return msgid;
+}
+#endif

es-core/src/LocaleES.h

@@ -0,0 +1,12 @@
+#ifndef _LOCALE_H_
+#define _LOCALE_H_
+
+#ifdef HAVE_GETTEXT
+  #include <libintl.h>
+  #define _(A) gettext(A)
+#else
+  #define _(A) A
+  char* ngettext(char* msgid, char* msgid_plural, unsigned long int n);
+#endif
+
+#endif

locale/CMakeLists.txt

@@ -0,0 +1,17 @@
+add_custom_target (i18n ALL COMMENT "Building i18n messages.")
+file (GLOB es_PO_FILES ${CMAKE_CURRENT_SOURCE_DIR}/lang/*)
+set(es_POT ${CMAKE_CURRENT_SOURCE_DIR}/emulationstation.pot)
+# update the pot
+MESSAGE("Building the pot file")
+add_custom_command (TARGET i18n COMMAND find "${CMAKE_SOURCE_DIR}/es-app" "${CMAKE_SOURCE_DIR}/es-core" -name "*.cpp" -o -name "*.h" | ${XGETTEXT_EXECUTABLE} -f - -o ${es_POT} --no-location --keyword=_)
+
+foreach (es_PO_INPUT ${es_PO_FILES})
+        get_filename_component (es_PO_LANG ${es_PO_INPUT} NAME_WE)
+	MESSAGE("LANG = ${es_PO_LANG}")
+	set (es_MO_OUTPUT ${es_PO_INPUT}/LC_MESSAGES/emulationstation.mo)
+	# update the po from the pot
+	add_custom_command (TARGET i18n COMMAND basename ${es_PO_INPUT} && ${MSGMERGE_EXECUTABLE} -U --no-fuzzy-matching ${es_PO_INPUT}/LC_MESSAGES/emulationstation.po ${es_POT})
+	# compile the po to mo
+        add_custom_command (TARGET i18n COMMAND ${MSGFMT_EXECUTABLE} -o ${es_MO_OUTPUT} ${es_PO_INPUT}/LC_MESSAGES/emulationstation.po --statistics)
+        install (FILES ${es_MO_OUTPUT} DESTINATION share/locale/${es_PO_LANG}/LC_MESSAGES RENAME emulationstation.mo)
+endforeach (es_PO_INPUT ${es_PO_FILES})

locale/checkLocale.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+(cd lang &&
+	for POLANG in *
+	do
+	    POFILE="./${POLANG}/LC_MESSAGES/emulationstation.po"
+	    echo -n "${POLANG}: "
+	    LANG=C msgfmt "${POFILE}" -o - --statistics > /dev/null
+	done
+ )

locale/emulationstation.pot

@@ -0,0 +1,37 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2019-07-19 10:06+0200\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\n"
+
+#, c-format
+msgid "%i GAME AVAILABLE"
+msgid_plural "%i GAMES AVAILABLE"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "Loading..."
+msgstr ""
+
+msgid "Loading system config..."
+msgstr ""
+
+msgid "QUIT"
+msgstr ""
+
+msgid "Done."
+msgstr ""