Hi i cant flutter esc pos print Kazakh Letters.

[TamirlanBir]

Hi i cant flutter esc pos print Kazakh Letters.

Uint8List cash =
        await CharsetConverter.encode(encodPrint, "Қолма-қол ақша салу");

 print_bluetooth_thermal: ^1.0.9  charset_converter: ^2.1.1  esc_pos_utils_plus: ^2.0.2

 Unhandled Exception: PlatformException(encoding_failed, Encoding failed, reason unknown, null, null)
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:652:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:310:18)
<asynchronous suspension>
#2      CharsetConverter.encode (package:charset_converter/charset_converter.dart:19:20)
<asynchronous suspension>

[pr0gramista]

Hi, thanks for reporting the issue. What code page name did you try to encode with? And also is the issue with particular characters or with any?

[TamirlanBir]

Hi, I use parts CP866 and cp1251, and the error in the frequency of Kazakh letters ('ә', 'ғ', 'қ', 'ң', 'ө', 'ұ', 'ү', 'һ', 'і')

[pr0gramista]

Ah, I see. There is a Kazakh variant of CP1251, where those letters appear. Could you try to use KZ-1048 or its aliases STRK1048-2002, RK1048?

[TamirlanBir]

Ah, I see. There is a Kazakh variant of CP1251, where those letters appear. Could you try to use KZ-1048 or its aliases STRK1048-2002, RK1048?

Doesn't work( There is the list of codePages , and there only RK1048

[TamirlanBir]

@pr0gramista hello! any news?

[pr0gramista]

Hi, I am afraid I have none.

The package itself isn't providing any code pages, instead it is handled by calls to underlying libraries, which I have no control of.

Perhaps you can write a necessary code page yourself. Not sure how Kazakh language is represented, but it might be as simple as mapping bytes from a table of codes.

[pr0gramista]

As an example, perhaps something like this would be enough:

// https://www.iana.org/assignments/charset-reg/KZ-1048

var map = {
  0x0000: 0x00,
  0x0001: 0x01,
  0x0002: 0x02,
  0x0003: 0x03,
  0x0004: 0x04,
  0x0005: 0x05,
  0x0006: 0x06,
  0x0007: 0x07,
  0x0008: 0x08,
  0x0009: 0x09,
  0x000A: 0x0a,
  0x000B: 0x0b,
  0x000C: 0x0c,
  0x000D: 0x0d,
  0x000E: 0x0e,
  0x000F: 0x0f,
  0x0010: 0x10,
  0x0011: 0x11,
  0x0012: 0x12,
  0x0013: 0x13,
  0x0014: 0x14,
  0x0015: 0x15,
  0x0016: 0x16,
  0x0017: 0x17,
  0x0018: 0x18,
  0x0019: 0x19,
  0x001A: 0x1a,
  0x001B: 0x1b,
  0x001C: 0x1c,
  0x001D: 0x1d,
  0x001E: 0x1e,
  0x001F: 0x1f,
  0x0020: 0x20,
  0x0021: 0x21,
  0x0022: 0x22,
  0x0023: 0x23,
  0x0024: 0x24,
  0x0025: 0x25,
  0x0026: 0x26,
  0x0027: 0x27,
  0x0028: 0x28,
  0x0029: 0x29,
  0x002A: 0x2a,
  0x002B: 0x2b,
  0x002C: 0x2c,
  0x002D: 0x2d,
  0x002E: 0x2e,
  0x002F: 0x2f,
  0x0030: 0x30,
  0x0031: 0x31,
  0x0032: 0x32,
  0x0033: 0x33,
  0x0034: 0x34,
  0x0035: 0x35,
  0x0036: 0x36,
  0x0037: 0x37,
  0x0038: 0x38,
  0x0039: 0x39,
  0x003A: 0x3a,
  0x003B: 0x3b,
  0x003C: 0x3c,
  0x003D: 0x3d,
  0x003E: 0x3e,
  0x003F: 0x3f,
  0x0040: 0x40,
  0x0041: 0x41,
  0x0042: 0x42,
  0x0043: 0x43,
  0x0044: 0x44,
  0x0045: 0x45,
  0x0046: 0x46,
  0x0047: 0x47,
  0x0048: 0x48,
  0x0049: 0x49,
  0x004A: 0x4a,
  0x004B: 0x4b,
  0x004C: 0x4c,
  0x004D: 0x4d,
  0x004E: 0x4e,
  0x004F: 0x4f,
  0x0050: 0x50,
  0x0051: 0x51,
  0x0052: 0x52,
  0x0053: 0x53,
  0x0054: 0x54,
  0x0055: 0x55,
  0x0056: 0x56,
  0x0057: 0x57,
  0x0058: 0x58,
  0x0059: 0x59,
  0x005A: 0x5a,
  0x005B: 0x5b,
  0x005C: 0x5c,
  0x005D: 0x5d,
  0x005E: 0x5e,
  0x005F: 0x5f,
  0x0060: 0x60,
  0x0061: 0x61,
  0x0062: 0x62,
  0x0063: 0x63,
  0x0064: 0x64,
  0x0065: 0x65,
  0x0066: 0x66,
  0x0067: 0x67,
  0x0068: 0x68,
  0x0069: 0x69,
  0x006A: 0x6a,
  0x006B: 0x6b,
  0x006C: 0x6c,
  0x006D: 0x6d,
  0x006E: 0x6e,
  0x006F: 0x6f,
  0x0070: 0x70,
  0x0071: 0x71,
  0x0072: 0x72,
  0x0073: 0x73,
  0x0074: 0x74,
  0x0075: 0x75,
  0x0076: 0x76,
  0x0077: 0x77,
  0x0078: 0x78,
  0x0079: 0x79,
  0x007A: 0x7a,
  0x007B: 0x7b,
  0x007C: 0x7c,
  0x007D: 0x7d,
  0x007E: 0x7e,
  0x007F: 0x7f,
  0x0402: 0x80,
  0x0403: 0x81,
  0x201A: 0x82,
  0x0453: 0x83,
  0x201E: 0x84,
  0x2026: 0x85,
  0x2020: 0x86,
  0x2021: 0x87,
  0x20AC: 0x88,
  0x2030: 0x89,
  0x0409: 0x8a,
  0x2039: 0x8b,
  0x040A: 0x8c,
  0x049A: 0x8d,
  0x04BA: 0x8e,
  0x040F: 0x8f,
  0x0452: 0x90,
  0x2018: 0x91,
  0x2019: 0x92,
  0x201C: 0x93,
  0x201D: 0x94,
  0x2022: 0x95,
  0x2013: 0x96,
  0x2014: 0x97,
  0x2122: 0x99,
  0x0459: 0x9a,
  0x203A: 0x9b,
  0x045A: 0x9c,
  0x049B: 0x9d,
  0x04BB: 0x9e,
  0x045F: 0x9f,
  0x00A0: 0xa0,
  0x04B0: 0xa1,
  0x04B1: 0xa2,
  0x04D8: 0xa3,
  0x00A4: 0xa4,
  0x04E8: 0xa5,
  0x00A6: 0xa6,
  0x00A7: 0xa7,
  0x0401: 0xa8,
  0x00A9: 0xa9,
  0x0492: 0xaa,
  0x00AB: 0xab,
  0x00AC: 0xac,
  0x00AD: 0xad,
  0x00AE: 0xae,
  0x04AE: 0xaf,
  0x00B0: 0xb0,
  0x00B1: 0xb1,
  0x0406: 0xb2,
  0x0456: 0xb3,
  0x04E9: 0xb4,
  0x00B5: 0xb5,
  0x00B6: 0xb6,
  0x00B7: 0xb7,
  0x0451: 0xb8,
  0x2116: 0xb9,
  0x0493: 0xba,
  0x00BB: 0xbb,
  0x04D9: 0xbc,
  0x04A2: 0xbd,
  0x04A3: 0xbe,
  0x04AF: 0xbf,
  0x0410: 0xc0,
  0x0411: 0xc1,
  0x0412: 0xc2,
  0x0413: 0xc3,
  0x0414: 0xc4,
  0x0415: 0xc5,
  0x0416: 0xc6,
  0x0417: 0xc7,
  0x0418: 0xc8,
  0x0419: 0xc9,
  0x041A: 0xca,
  0x041B: 0xcb,
  0x041C: 0xcc,
  0x041D: 0xcd,
  0x041E: 0xce,
  0x041F: 0xcf,
  0x0420: 0xd0,
  0x0421: 0xd1,
  0x0422: 0xd2,
  0x0423: 0xd3,
  0x0424: 0xd4,
  0x0425: 0xd5,
  0x0426: 0xd6,
  0x0427: 0xd7,
  0x0428: 0xd8,
  0x0429: 0xd9,
  0x042A: 0xda,
  0x042B: 0xdb,
  0x042C: 0xdc,
  0x042D: 0xdd,
  0x042E: 0xde,
  0x042F: 0xdf,
  0x0430: 0xe0,
  0x0431: 0xe1,
  0x0432: 0xe2,
  0x0433: 0xe3,
  0x0434: 0xe4,
  0x0435: 0xe5,
  0x0436: 0xe6,
  0x0437: 0xe7,
  0x0438: 0xe8,
  0x0439: 0xe9,
  0x043A: 0xea,
  0x043B: 0xeb,
  0x043C: 0xec,
  0x043D: 0xed,
  0x043E: 0xee,
  0x043F: 0xef,
  0x0440: 0xf0,
  0x0441: 0xf1,
  0x0442: 0xf2,
  0x0443: 0xf3,
  0x0444: 0xf4,
  0x0445: 0xf5,
  0x0446: 0xf6,
  0x0447: 0xf7,
  0x0448: 0xf8,
  0x0449: 0xf9,
  0x044A: 0xfa,
  0x044B: 0xfb,
  0x044C: 0xfc,
  0x044D: 0xfd,
  0x044E: 0xfe,
  0x044F: 0xff,
};

void main() {
  print('сәлем, қалыңыз қалай?'
      .codeUnits
      .map((codeUnit) => map[codeUnit])
      .join(", "));
}