how to change charset of printing text in ios in native code?

[zhake555]

in android PrintContent.java file i add this 2 lines of code to print text in Cyrillic like "привет".

esc.addSelectCodePage(EscCommand.CODEPAGE.PC866); esc.addText(content, "cp866");

cp866 is name of charset that support Cyrillic.

And how to edit code in ios like this to print in charset cp866?