chore: add iso-2022-jp-katakana table, for iso-2022-jp encoder

Author: ChALkeR

fallback/multi-byte.encodings.json

@@ -255,6 +255,7 @@
     0,96,"jTDyPYHPZsuW6DaOAK_MYbVV1Cc3hQPtxUtKV3vkuxWVbAKIJVtbpKg5G_YAYBudaZjpT-o5ZSoE-Ts1a64cjtcxYm6cmFG_wfn_U3Wf0xu-7iPUmOmX1uo8Q9XtOHkACQEHAQELY2oBEwAC1AcEAgMCAwj7AgYDAwkTCgLRAQUZCbwNAQEAAQAFAAMDAgABAgMCBQEHBAkGCLUDCAEBAAEFAQMDAgEDCwMCAwQCxiHoDyrAAgUKAAECBQA",
     0,96,"O3jA12FpgHMtTDt5TLAodifVF3BpNYprtGJ0H_7cxeYXTyeXYzCavakroFIokJoA_OmpTq4RLcHYQw10PC11jQ4JHAjxN8yXMs0Hvc5hHhwCjP6YLIeyHwDs_1ixvXIOEQm1AQMBAAEACQEICgIdwgAGABkAABQF3B_QEQsTzwIW9AAEAwsZBQ-xFQwFEdorErQAAhoTHsgFBQXfCCEN4QAA6QwNEgPOAQQBAAMCAwMAAQQACwAAAQcBBQs"
   ],
+  "iso-2022-jp-katakana":[12290,9,0,-13,249,-10,-82,1,1,1,1,57,1,1,-37,56,-91,1,1,1,1,0,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,0,0,0,0,0,2,2,2,2,2,0,0,0,0,1,1,1,0,0,0,0,0,1,3,-89,0],
   "gb18030-ranges": [0,128,36,37,2,4,7,9,5,6,31,32,8,10,6,9,1,3,4,6,3,4,1,3,1,2,4,5,17,18,7,8,15,16,24,25,3,4,4,5,29,30,98,99,1,2,1,2,1,2,1,2,1,2,1,2,1,2,28,29,87,88,15,16,101,102,1,4,13,14,183,200,1,8,7,24,1,8,55,56,14,78,1,2,7102,7103,2,6,1,3,2,4,7,9,9,10,1,3,1,2,5,6,112,113,86,87,1,2,3,4,12,13,10,11,62,74,4,14,22,26,2,6,110,111,6,7,1,2,3,4,4,5,2,6,2,3,1,2,1,6,2,3,5,9,5,6,10,11,3,4,5,6,13,15,2,6,6,8,37,38,3,4,11,12,25,26,82,83,333,343,10,50,100,176,4,40,13,28,3,6,10,12,16,18,8,10,8,10,3,4,2,4,18,22,31,33,2,3,54,55,1,2,2110,2111,2,3,3,4,2,4,10,11,15,16,2,3,3,4,4,5,2,4,3,4,14,15,293,305,4,8,1,20,5,7,2,11,20,21,2,85,7,11,2,88,5,8,6,43,246,256,7,8,113,114,234,236,12,15,2,3,34,35,9,10,2,4,2,3,113,114,43,44,298,299,111,112,11,12,765,766,85,86,96,98,14,15,147,148,218,219,287,288,113,114,885,886,264,265,471,472,116,117,4,5,43,44,248,249,373,374,20,21,193,194,5,6,82,83,16,17,441,442,50,51,2,3,4,6,1,3,20,21,3,4,22,24,703,704,39,44,111,118,148,149,81,20983,14426,18374,1,92,1,31,13,46,1,4,5,6,7,8,4,6,4,6,8,9,7,8,16,18,14,15,4295,4296,76,77,27,28,81,82,9,10,26,30,1,2,1,3,3,4,6,9,1,3,2,5,1030,1032,1,19,4,14,1,5,1,15,1,5,149,243,129,135,149606,26],
   "gb18030": [
     1,19970,3,1,1,8,-2,1,4,3,7,-1,-2,-2,2,4,-1,-1,-1,-1,1,4,3,3,-1,-1,-3,1,6,-3,-1,2,2,4,6,2,1,6,1,-2,10,1,7,1,-1,-2,1,5,2,5,-1,3,2,1,4,1,6,3,4,-2,4,1,3,2,1,9,-3,2,2,-1,3,7,-3,-1,2,3,-1,3,3,-1,-2,3,3,

fallback/multi-byte.table.js

@@ -104,6 +104,9 @@ export function getTable(id) {
     let a = 0, b = 0 // prettier-ignore
     const idx = indices[id]
     while (idx.length > 0) res.push([(a += idx.shift()), (b += idx.shift())]) // destroying, we remove it later anyway
+  } else if (id.endsWith('-katakana')) {
+    let a = -1
+    res = indices[id].map((x) => (a += x + 1))
   } else if (id === 'big5') {
     if (!Object.hasOwn(sizes, id)) throw new Error('Unknown encoding')
     res = new Uint32Array(sizes[id]) // array of strings or undefined

tests/multi-byte.tables.test.js

@@ -2,7 +2,7 @@ import { readFileSync } from 'node:fs'
 import { join } from 'node:path'
 import { test, describe } from 'node:test'
 import { getTable, sizes } from '../fallback/multi-byte.table.js'
-import { multiByte, gb18030ranges } from './encoding/fixtures/indexes.cjs'
+import { multiByte, gb18030ranges, katakana } from './encoding/fixtures/indexes.cjs'
 
 const encodings = Object.keys(sizes)
 
@@ -131,4 +131,8 @@ describe('multi-byte encodings index: WHATWG non-normative indexes.json', () =>
   test('gb18030-ranges', (t) => {
     t.assert.deepStrictEqual(getTable('gb18030-ranges'), gb18030ranges)
   })
+
+  test('iso-2022-jp-katakana', (t) => {
+    t.assert.deepStrictEqual(getTable('iso-2022-jp-katakana'), katakana)
+  })
 })