Chinese Code Page?

[neohboonyee99]

I am trying to print a receipt which contains Chinese words. (Generic Bluetooth thermal printer) end up the Chinese character just become some weird symbol. Is there a need to change the code page used by the printer? (Current CP850)

[waqadArshad]

You need to go to capabilities.json -- for me the path was: C:\Flutter\flutter 3.3.1\flutter.pub-cache\hosted\pub.dartlang.org\esc_pos_utils-1.1.0\lib\resources). This is the package file.

The default section looks like this:

And in the default section, add the following in the codePages map:

 "253": "UTF-8",

Now in the file it would look something like this:

after this, go to your flutter code and add this:

    final profile = await CapabilityProfile.load(name: 'default');
    final generator = Generator(PaperSize.mm80, profile);
    bytes += generator.setGlobalCodeTable('UTF-8');

after that add the following package in your pubspec.yaml file:

charset_converter: ^2.1.1

now, do something like this:

bytes += generator.textEncoded(
        await CharsetConverter.encode("UTF-8", 'Size 1 Product 1: 招牌韮黃鍋貼 , Signature: Pork W/ Yellow Chive'),
        styles: const PosStyles(align: PosAlign.left, bold: true));

Remember to use UTF-8 and also remember to use this same encoding setting for your printer:

[waqadArshad]

Hi, if you don't want to bother with that, you can use my fork:

https://github.com/waqadArshad/esc_pos_utils

as:

  esc_pos_utils:
    git:
      url: https://github.com/waqadArshad/esc_pos_utils.git

and if it fixes your issue, please remember to STAR the repo.