Add rake task for uppdating locale files with slightly changed msgids

We don't really want to make all the translators retranslate strings
that are basically the same but slightly tweaked in the English version.
So this task just replaces the msgid in the app.po files for each locale.

1 files changed, 46 insertions, 1 deletions

diff --git a/lib/tasks/gettext.rake b/lib/tasks/gettext.rake
index 9bdb6169b..4df92b008 100644
--- a/lib/tasks/gettext.rake
+++ b/lib/tasks/gettext.rake
@@ -35,14 +35,59 @@ namespace :gettext do
         end
    end
 
+   desc 'Update locale files with slightly changed English msgids using a csv file of old to new strings'
+   task :update_msgids_from_csv do
+       mapping_file = find_mapping_file(ENV['MAPPING_FILE'])
+       mappings = {}
+       CSV.parse(clean_csv_mapping_file(mapping_file)) do |csv_line|
+           from,to = csv_line
+           mappings[from] = to
+       end
+       Dir.glob("locale/**/app.po").each do |po_file|
+           lang_mappings = mappings.clone
+           lines = []
+           File.read(po_file).each_line do |line|
+               /^msgid "(.*)"/ =~ line
+               if $1 && mappings[$1]
+                    lines << "msgid \"#{lang_mappings.delete($1)}\""
+                 else
+                    lines << line
+                end
+           end
+           puts "Mappings unused in #{po_file}: #{lang_mappings.keys}" unless lang_mappings.empty?
+           File.open(po_file, "w") { |f| f.puts(lines) }
+       end
+   end
+
+   # Use a quote for quote-escaping as CSV errors on the \" with "Missing or stray quote"
+   def clean_csv_mapping_file(file)
+       data = ''
+       File.foreach(file) do |line|
+         data += line.gsub('\"', '""')
+       end
+       data
+   end
+
    def find_theme(theme)
        unless theme
            puts "Usage: Specify an Alaveteli-theme with THEME=[theme directory name]"
-           exit(0)
+           exit(1)
        end
        theme
    end
 
+   def find_mapping_file(file)
+       unless file
+           puts "Usage: Specify a csv file mapping old to new strings with MAPPING_FILE=[file name]"
+           exit(1)
+       end
+       unless File.exists?(file)
+           puts "Error: MAPPING_FILE #{file} not found"
+           exit(1)
+       end
+       file
+   end
+
    def theme_files_to_translate(theme)
        Dir.glob("{lib/themes/#{theme}/lib}/**/*.{rb,erb}")
    end