Intl_translation
This package provides message extraction and code generation from translated messages for the Intl package. It's a separate package so as to not require a dependency on analyzer for all users.
Extracting And Using Translated Messages
When your program contains messages that need translation, these must be extracted from the program source, sent to human translators, and the results need to be incorporated.
To extract messages, run the extract_to_arb.dart program.
pub run intl_translation:extract_to_arb --output-dir=target/directory
my_program.dart more_of_my_program.dart
This will produce a file intl_messages.arb with the messages from all of these
programs. This is an ARB format file which can be used for input to
translation tools like Localizely or (the deprecated) Google
Translator Toolkit. The resulting
translations can be used to generate a set of libraries using the
generate_from_arb.dart program.
This expects to receive a series of files, one per locale.
pub run intl_translation:generate_from_arb --generated-file-prefix=<prefix>
<my_dart_files> <translated_ARB_files>
This will generate Dart libraries, one per locale, which contain the
translated versions. Your Dart libraries can import the primary file,
named <prefix>messages_all.dart, and then call the initialization
for a specific locale. Once that's done, any
Intl.message calls made in the context of that locale
will automatically print the translated version instead of the
original.
import "my_prefix_messages_all.dart";
...
initializeMessages("dk").then(printSomeMessages);
Once the Future returned from the initialization call completes, the message data is available.