Update TDEL10n module

+ Add option to determine comments to extract.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

modules/TDEL10n.cmake

@@ -129,6 +129,7 @@ endfunction( )
 #####   tde_l10n_create_template(
 #####     [CATALOG] file_name
 #####     [SOURCES source_spec [source_spec]]
+#####     [COMMENT tag]
 #####     [EXCLUDES regex [regex]]
 #####     [KEYWORDS keyword [keyword]]
 #####     [ATTRIBUTES attrib_spec [attrib_spec]]
@@ -148,6 +149,7 @@ endfunction( )
 #####     d) Specify the name of the individual file.
 #####     The methods from b) to d) can be combined.
 #####   EXCLUDES determines which files are to be excluded from processing
+#####   COMMENT determines additional comment to extract by xgettext.
 #####   KEYWORDS determines additional keywords for xgettext.
 #####     Use "-" if is needed to disable default keywords.
 #####   ATTRIBUTES determines files and specification for extractattr:
@@ -176,6 +178,7 @@ macro( tde_l10n_create_template )
   unset( _pots )
   unset( _dest )
   unset( _keywords_add )
+  unset( _comment )
   unset( _attributes )
   unset( _pot )
   unset( _directive )
@@ -213,6 +216,13 @@ macro( tde_l10n_create_template )
       set( _directive 1 )
     endif( )
 
+    # found directive "COMMENT"
+    if( "+${_arg}" STREQUAL "+COMMENT" )
+      unset( _comment )
+      set( _var _comment )
+      set( _directive 1 )
+    endif( )
+
     # found directive "KEYWORDS"
     if( "+${_arg}" STREQUAL "+KEYWORDS" )
       unset( _keywords_add )
@@ -331,6 +341,15 @@ macro( tde_l10n_create_template )
     tde_message_fatal( "no source files found" )
   endif( )
 
+  # prepare comment
+  if( NOT "${_comment}" STREQUAL "" )
+    if( "${_comment}" STREQUAL "-" OR "${_comment}" STREQUAL "all" )
+      set( _comment "-c" )
+    else( )
+      set( _comment "-c${_comment}" )
+    endif( )
+  endif( )
+
   # prepare keywords
   unset( _keywords_c )
   unset( _keywords_desktop )
@@ -417,7 +436,7 @@ macro( tde_l10n_create_template )
   if( _files )
     execute_process(
       COMMAND ${KDE_XGETTEXT_EXECUTABLE} --foreign-user -C
-        ${_keywords_c} -o - ${_files}
+        ${_comment} ${_keywords_c} -o - ${_files}
       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
       OUTPUT_VARIABLE _pot
     )