From 9a5537fcc6d3ea98909360636a45bd3cf3aba1d1 Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <jak@debian.org>
Date: Sun, 7 Aug 2016 16:01:18 +0200
Subject: CMake: Translations: Build apt-all.pot and update .po files

Merge all the per-domain templates into one template file using
msgcomm, stripping any line numbers in the input files, and sorting
the output per file.

This should create reasonably stable .pot and .po files that do not
change just because files move around. It should also be resilient
against some line changes, as long as one translated line is not
moved before/after another translated line.

Gbp-Dch: ignore
---
 CMake/Translations.cmake | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 44 insertions(+), 2 deletions(-)

(limited to 'CMake')

diff --git a/CMake/Translations.cmake b/CMake/Translations.cmake
index 1b9781d69..6a9862005 100644
--- a/CMake/Translations.cmake
+++ b/CMake/Translations.cmake
@@ -13,6 +13,13 @@ function(apt_add_translation_domain)
     set(abs_scripts "")
     set(targets ${NLS_TARGETS})
     set(domain ${NLS_DOMAIN})
+    set(xgettext_params
+        --add-comments
+        --foreign
+        --package-name=${PROJECT_NAME}
+        --package-version=${PACKAGE_VERSION}
+        --msgid-bugs-address=${PACKAGE_MAIL}
+    )
     foreach(source ${NLS_SCRIPTS})
             string(SUBSTRING ${source} 0 1 init_char)
             string(COMPARE EQUAL ${init_char} "/" is_absolute)
@@ -50,19 +57,21 @@ function(apt_add_translation_domain)
         set(sh_pot ${PROJECT_BINARY_DIR}/${domain}.sh.pot)
         # Create the template for this specific sub-domain
         add_custom_command (OUTPUT ${sh_pot}
-            COMMAND xgettext --add-comments --foreign -L Shell
+            COMMAND xgettext ${xgettext_params} -L Shell
                              -o ${sh_pot} ${scripts}
             DEPENDS ${abs_scripts}
+            VERBATIM
             WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
         )
     endif()
 
 
     add_custom_command (OUTPUT ${PROJECT_BINARY_DIR}/${domain}.c.pot
-        COMMAND xgettext --add-comments --foreign -k_ -kN_
+        COMMAND xgettext ${xgettext_params} -k_ -kN_
                          --keyword=P_:1,2
                          -o ${PROJECT_BINARY_DIR}/${domain}.c.pot ${files}
         DEPENDS ${abs_files}
+        VERBATIM
         WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
     )
 
@@ -100,3 +109,36 @@ function(apt_add_translation_domain)
 
     add_custom_target(nls-${domain} ALL DEPENDS ${mofiles})
 endfunction()
+
+# Usage: apt_add_update_po(output domain [domain ...])
+function(apt_add_update_po)
+    set(options)
+    set(oneValueArgs TEMPLATE)
+    set(multiValueArgs DOMAINS)
+    cmake_parse_arguments(NLS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+    set(output ${CMAKE_CURRENT_SOURCE_DIR}/${NLS_TEMPLATE}.pot)
+    foreach(domain ${NLS_DOMAINS})
+        list(APPEND potfiles ${PROJECT_BINARY_DIR}/${domain}.pot)
+    endforeach()
+
+    get_filename_component(master_name ${output} NAME_WE)
+    add_custom_target(nls-${master_name}
+                       COMMAND msgcomm --sort-by-file --add-location=file
+                                        --more-than=0 --output=${output}
+                                ${potfiles}
+                       DEPENDS ${potfiles})
+
+    file(GLOB translations "${PROJECT_SOURCE_DIR}/po/*.po")
+    if (NOT TARGET update-po)
+        add_custom_target(update-po)
+    endif()
+    foreach(translation ${translations})
+            get_filename_component(langcode ${translation} NAME_WE)
+            add_custom_target(update-po-${langcode}
+                COMMAND msgmerge -q --update --backup=none ${translation} ${output}
+                DEPENDS nls-${master_name}
+            )
+            add_dependencies(update-po update-po-${langcode})
+    endforeach()
+    add_dependencies(update-po nls-${master_name})
+endfunction()
-- 
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