prepare for translations

CMakeLists.txt

@@ -93,7 +93,11 @@ else()
   endif()
 endif()
 
+# until ready
+set(WITH_LOCALE_DEFAULT OFF)
+
 option(BUILD_GUI "Build the tracker (disable to build only a headless player)" ${BUILD_GUI_DEFAULT})
+option(WITH_LOCALE "Use libintl for language support" ${WITH_LOCALE_DEFAULT})
 option(USE_RTMIDI "Build with MIDI support using RtMidi." ${USE_RTMIDI_DEFAULT})
 option(USE_SDL2 "Build with SDL2. Required to build with GUI." ${USE_SDL2_DEFAULT})
 option(USE_SNDFILE "Build with libsndfile. Required in order to work with audio files." ${USE_SNDFILE_DEFAULT})
@@ -171,6 +175,21 @@ if (WIN32)
   endif()
 endif()
 
+if (WITH_LOCALE)
+  if ("${CMAKE_VERSION}" VERSION_LESS "3.2")
+    message(FATAL_ERROR "CMake 3.2 or later required for locale support.")
+  else()
+    include(FindIntl)
+    if (NOT Intl_FOUND)
+      message(FATAL_ERROR "Could not find libintl!")
+    endif()
+    list(APPEND DEPENDENCIES_DEFINES HAVE_LOCALE)
+    list(APPEND DEPENDENCIES_INCLUDE_DIRS ${Intl_INCLUDE_DIRS})
+    list(APPEND DEPENDENCIES_LIBRARIES ${Intl_LIBRARIES})
+    message(STATUS "Using libintl")
+  endif()
+endif()
+
 if (SYSTEM_FFTW)
   find_package(PkgConfig REQUIRED)
   pkg_check_modules(FFTW REQUIRED fftw3>=3.3)
@@ -1141,6 +1160,17 @@ else()
   add_executable(furnace ${USED_SOURCES})
 endif()
 
+if (WITH_LOCALE)
+  set(FURNACE_LANGUAGES es pl pt_BR ru)
+  set(FURNACE_LANGUAGE_DEPENDS "")
+
+  foreach(I IN LISTS FURNACE_LANGUAGES)
+    add_custom_command(OUTPUT "locale/${I}/LC_MESSAGES/furnace.mo" COMMAND msgfmt ${CMAKE_SOURCE_DIR}/po/${I}.po -o "${CMAKE_BINARY_DIR}/locale/${I}/LC_MESSAGES/furnace.mo" DEPENDS po/${I}.po WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
+    list(APPEND FURNACE_LANGUAGE_DEPENDS "locale/${I}/LC_MESSAGES/furnace.mo")
+  endforeach()
+  add_custom_target(furnace-locale ALL DEPENDS ${FURNACE_LANGUAGE_DEPENDS})
+endif()
+
 target_include_directories(furnace SYSTEM PRIVATE ${DEPENDENCIES_INCLUDE_DIRS})
 target_compile_options(furnace PRIVATE ${DEPENDENCIES_COMPILE_OPTIONS})
 target_link_libraries(furnace PRIVATE ${DEPENDENCIES_LIBRARIES})

po/es.po

@@ -0,0 +1,23 @@
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: furnace 0.6.3\n"
+"Last-Translator: Automatically generated\n"
+"Language-Team: none\n"
+"Language: es\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: src/gui/debugWindow.cpp:662
+msgid "This is a language test."
+msgstr "Este es una prueba de idioma."
+
+#: src/gui/debugWindow.cpp:663
+msgid "This is another language test."
+msgstr "Este es otra prueba de idioma."
+
+#: src/main.cpp:510
+msgid "this is a test!"
+msgstr "este es una prueba!"

po/furnace.pot

@@ -0,0 +1,19 @@
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: furnace 0.6.3\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: src/gui/debugWindow.cpp:662
+msgid "This is a language test."
+msgstr ""
+
+#: src/gui/debugWindow.cpp:663
+msgid "This is another language test."
+msgstr ""
+
+#: src/main.cpp:510
+msgid "this is a test!"
+msgstr ""

po/pl.po

@@ -0,0 +1,24 @@
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: furnace 0.6.3\n"
+"Last-Translator: Automatically generated\n"
+"Language-Team: none\n"
+"Language: pl\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=3; plural=(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 "
+"|| n%100>=20) ? 1 : 2);\n"
+
+#: src/gui/debugWindow.cpp:662
+msgid "This is a language test."
+msgstr ""
+
+#: src/gui/debugWindow.cpp:663
+msgid "This is another language test."
+msgstr ""
+
+#: src/main.cpp:510
+msgid "this is a test!"
+msgstr ""

po/pt_BR.po

@@ -0,0 +1,23 @@
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: furnace 0.6.3\n"
+"Last-Translator: Automatically generated\n"
+"Language-Team: none\n"
+"Language: pt_BR\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+
+#: src/gui/debugWindow.cpp:662
+msgid "This is a language test."
+msgstr ""
+
+#: src/gui/debugWindow.cpp:663
+msgid "This is another language test."
+msgstr ""
+
+#: src/main.cpp:510
+msgid "this is a test!"
+msgstr ""

po/ru.po

@@ -0,0 +1,24 @@
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: furnace 0.6.3\n"
+"Last-Translator: Automatically generated\n"
+"Language-Team: none\n"
+"Language: ru\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && "
+"n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);\n"
+
+#: src/gui/debugWindow.cpp:662
+msgid "This is a language test."
+msgstr ""
+
+#: src/gui/debugWindow.cpp:663
+msgid "This is another language test."
+msgstr ""
+
+#: src/main.cpp:510
+msgid "this is a test!"
+msgstr ""

scripts/update-po.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+FUR_VERSION="0.6.3"
+
+EXPORT_LANGS=("es" "ru" "pl" "pt_BR")
+
+echo '#
+msgid ""
+msgstr ""' > po/furnace.pot
+echo '"Project-Id-Version: furnace '"$FUR_VERSION"'\n"' >> po/furnace.pot
+echo '"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+' >> po/furnace.pot
+
+find src/ -type f -regex ".*\(cpp\|h\)$" | xargs xgettext --omit-header -k_ -L C++ -o - >> po/furnace.pot
+
+cd po
+for i in ${EXPORT_LANGS[@]}; do
+  if [ -e "$i".po ]; then
+    echo "merging $i"".po..."
+    msgmerge --backup=none -U "$i".po furnace.pot
+  else
+    echo "creating $i"".po..."
+    msginit -i furnace.pot -l "$i".UTF-8 --no-translator
+  fi
+done

src/gui/debugWindow.cpp

@@ -658,6 +658,11 @@ void FurnaceGUI::drawDebug() {
       }
       ImGui::TreePop();
     }
+    if (ImGui::TreeNode("Locale Test")) {
+      ImGui::TextUnformatted(_("This is a language test."));
+      ImGui::TextUnformatted(_("This is another language test."));
+      ImGui::TreePop();
+    }
     if (ImGui::TreeNode("Osc Render Test")) {
       ImGui::InputInt("Length",&oscDebugLen);
       ImGui::InputInt("Height",&oscDebugHeight);

src/main.cpp

@@ -489,6 +489,27 @@ int main(int argc, char** argv) {
   zsmOutName="";
   cmdOutName="";
 
+#ifdef HAVE_LOCALE
+  const char* localeRet=NULL;
+  if ((localeRet=setlocale(LC_ALL,""))==NULL) {
+    logE("could not set locale!");
+  } else {
+    logV("locale: %s",localeRet);
+  }
+  if ((localeRet=bindtextdomain("furnace","locale"))==NULL) {
+    logE("could not bind text domain!");
+  } else {
+    logV("text domain 1: %s",localeRet);
+  }
+  if ((localeRet=textdomain("furnace"))==NULL) {
+    logE("could not text domain!");
+  } else {
+    logV("text domain 2: %s",localeRet);
+  }
+
+  logV(_("this is a test!"));
+#endif
+
   initParams();
 
   // parse arguments

src/ta-utils.h

@@ -42,6 +42,13 @@ typedef std::string String;
 #define MAX(a,b) (((a)>(b))?(a):(b))
 #define CLAMP(x,xMin,xMax) (MIN(MAX((x),(xMin)),(xMax)))
 
+#ifdef HAVE_LOCALE
+#include <libintl.h>
+#define _(_str) gettext(_str)
+#else
+#define _(_str) _str
+#endif
+
 typedef std::wstring WString;
 
 enum TAParamResult {