Add macros GETTEXT_PROCESS_POT() and GETTEXT_PROCESS_PO_FILES()

These macros (functions actually) can be used to process pot and
po files. Patch prepared by Raphael Kubo da Costa.

Alex

Modules/FindGettext.cmake

@@ -11,9 +11,22 @@
 #    given input po files into the binary output mo file. If the 
 #    ALL option is used, the translations will also be created when
 #    building the default target.
+# GETTEXT_PROCESS_POT( <potfile> [ALL] [INSTALL_DESTINATION <destdir>] LANGUAGES <lang1> <lang2> ... )
+#     Process the given pot file to mo files.
+#     If INSTALL_DESTINATION is given then automatically install rules will be created,
+#     the language subdirectory will be taken into account (by default use share/locale/).
+#     If ALL is specified, the pot file is processed when building the all traget.
+#     It creates a custom target "potfile".
+# GETTEXT_PROCESS_PO_FILES( <lang> [ALL] [INSTALL_DESTINATION <dir>] PO_FILES <po1> <po2> ... )
+#     Process the given po files to mo files for the given language.
+#     If INSTALL_DESTINATION is given then automatically install rules will be created,
+#     the language subdirectory will be taken into account (by default use share/locale/).
+#     If ALL is specified, the po files are processed when building the all traget.
+#     It creates a custom target "pofiles".
 
 #=============================================================================
 # Copyright 2007-2009 Kitware, Inc.
+# Copyright 2007      Alexander Neundorf <[email protected]>
 #
 # Distributed under the OSI-approved BSD License (the "License");
 # see accompanying file Copyright.txt for details.
@@ -29,6 +42,8 @@ FIND_PROGRAM(GETTEXT_MSGMERGE_EXECUTABLE msgmerge)
 
 FIND_PROGRAM(GETTEXT_MSGFMT_EXECUTABLE msgfmt)
 
+INCLUDE(CMakeParseArguments)
+
 MACRO(GETTEXT_CREATE_TRANSLATIONS _potFile _firstPoFileArg)
    # make it a real variable, so we can modify it here
    SET(_firstPoFile "${_firstPoFileArg}")
@@ -49,14 +64,14 @@ MACRO(GETTEXT_CREATE_TRANSLATIONS _potFile _firstPoFileArg)
       GET_FILENAME_COMPONENT(_lang ${_absFile} NAME_WE)
       SET(_gmoFile ${CMAKE_CURRENT_BINARY_DIR}/${_lang}.gmo)
 
-      ADD_CUSTOM_COMMAND( 
-         OUTPUT ${_gmoFile} 
+      ADD_CUSTOM_COMMAND(
+         OUTPUT ${_gmoFile}
          COMMAND ${GETTEXT_MSGMERGE_EXECUTABLE} --quiet --update --backup=none -s ${_absFile} ${_absPotFile}
          COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} -o ${_gmoFile} ${_absFile}
-         DEPENDS ${_absPotFile} ${_absFile} 
+         DEPENDS ${_absPotFile} ${_absFile}
       )
 
-      INSTALL(FILES ${_gmoFile} DESTINATION share/locale/${_lang}/LC_MESSAGES RENAME ${_potBasename}.mo) 
+      INSTALL(FILES ${_gmoFile} DESTINATION share/locale/${_lang}/LC_MESSAGES RENAME ${_potBasename}.mo)
       SET(_gmoFiles ${_gmoFiles} ${_gmoFile})
 
    ENDFOREACH (_currentPoFile )
@@ -65,6 +80,78 @@ MACRO(GETTEXT_CREATE_TRANSLATIONS _potFile _firstPoFileArg)
 
 ENDMACRO(GETTEXT_CREATE_TRANSLATIONS )
 
+
+FUNCTION(GETTEXT_PROCESS_POT_FILE _potFile)
+   SET(_gmoFiles)
+   SET(_options ALL)
+   SET(_oneValueArgs INSTALL_DESTINATION)
+   SET(_multiValueArgs LANGUAGES)
+
+   CMAKE_PARSE_ARGUMENTS(_parsedArguments "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
+
+   GET_FILENAME_COMPONENT(_potBasename ${_potFile} NAME_WE)
+   GET_FILENAME_COMPONENT(_absPotFile ${_potFile} ABSOLUTE)
+
+   FOREACH (_lang ${_parsedArguments_LANGUAGES})
+      SET(_poFile  "${CMAKE_CURRENT_BINARY_DIR}/${_lang}.po")
+      SET(_gmoFile "${CMAKE_CURRENT_BINARY_DIR}/${_lang}.gmo")
+
+      ADD_CUSTOM_COMMAND(
+         OUTPUT "${_poFile}"
+         COMMAND ${GETTEXT_MSGMERGE_EXECUTABLE} --quiet --update --backup=none -s ${_poFile} ${_absPotFile}
+         DEPENDS ${_absPotFile}
+      )
+
+      ADD_CUSTOM_COMMAND(
+         OUTPUT "${_gmoFile}"
+         COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} -o ${_gmoFile} ${_poFile}
+         DEPENDS ${_absPotFile} ${_poFile}
+      )
+
+      IF(_parsedArguments_INSTALL_DESTINATION)
+         INSTALL(FILES ${_gmoFile} DESTINATION ${_parsedArguments_INSTALL_DESTINATION}/${_lang}/LC_MESSAGES RENAME ${_potBasename}.mo)
+      ENDIF(_parsedArguments_INSTALL_DESTINATION)
+      LIST(APPEND _gmoFiles ${_gmoFile})
+   ENDFOREACH (_lang )
+
+   IF(_parsedArguments_ALL)
+      ADD_CUSTOM_TARGET(potfiles ALL DEPENDS ${_gmoFiles})
+   ELSE(_parsedArguments_ALL)
+      ADD_CUSTOM_TARGET(potfiles DEPENDS ${_gmoFiles})
+   ENDIF(_parsedArguments_ALL)
+ENDFUNCTION(GETTEXT_PROCESS_POT_FILE)
+
+
+FUNCTION(GETTEXT_PROCESS_PO_FILES _lang)
+   SET(_options ALL)
+   SET(_oneValueArgs INSTALL_DESTINATION)
+   SET(_multiValueArgs PO_FILES)
+   SET(_gmoFiles)
+
+   CMAKE_PARSE_ARGUMENTS(_parsedArguments "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
+
+   FOREACH(_current_PO_FILE ${_parsedArguments_PO_FILES})
+      GET_FILENAME_COMPONENT(_basename ${_current_PO_FILE} NAME_WE)
+      SET(_gmoFile ${CMAKE_CURRENT_BINARY_DIR}/${_basename}.gmo)
+      ADD_CUSTOM_COMMAND(OUTPUT ${_gmoFile}
+            COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} -o ${_gmoFile} ${_current_PO_FILE}
+            WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+            DEPENDS ${_current_PO_FILE}
+         )
+
+      IF(_parsedArguments_INSTALL_DESTINATION)
+         INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/${_basename}.gmo DESTINATION ${_parsedArguments_INSTALL_DESTINATION}/${_lang}/LC_MESSAGES/ RENAME ${_basename}.mo)
+      ENDIF(_parsedArguments_INSTALL_DESTINATION)
+      LIST(APPEND _gmoFiles ${_gmoFile})
+   ENDFOREACH(_current_PO_FILE)
+
+   IF(_parsedArguments_ALL)
+      ADD_CUSTOM_TARGET(pofiles ALL DEPENDS ${_gmoFiles})
+   ELSE(_parsedArguments_ALL)
+      ADD_CUSTOM_TARGET(pofiles DEPENDS ${_gmoFiles})
+   ENDIF(_parsedArguments_ALL)
+ENDFUNCTION(GETTEXT_PROCESS_PO_FILES)
+
 IF (GETTEXT_MSGMERGE_EXECUTABLE AND GETTEXT_MSGFMT_EXECUTABLE )
    SET(GETTEXT_FOUND TRUE)
 ELSE (GETTEXT_MSGMERGE_EXECUTABLE AND GETTEXT_MSGFMT_EXECUTABLE )
@@ -73,6 +160,3 @@ ELSE (GETTEXT_MSGMERGE_EXECUTABLE AND GETTEXT_MSGFMT_EXECUTABLE )
       MESSAGE(FATAL_ERROR "GetText not found")
    ENDIF (GetText_REQUIRED)
 ENDIF (GETTEXT_MSGMERGE_EXECUTABLE AND GETTEXT_MSGFMT_EXECUTABLE )
-
-
-