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polyfill for TypedArray.fill

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This commit is contained in:
Jörg Breitbart
2018-11-21 00:07:28 +01:00
parent 36db03e713
commit ef6fb93a92
3 changed files with 211 additions and 12 deletions
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src/CharWidth.ts
+14 -12
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@@ -1,3 +1,5 @@
import { fill } from './core/TypedArrayUtils';
/**
* Copyright (c) 2016 The xterm.js authors. All rights reserved.
* @license MIT
@@ -91,26 +93,26 @@ export const wcwidth = (function(opts: {nul: number, control: number}): (ucs: nu
// create lookup table for BMP plane
const table = new Uint8Array(65536);
table.fill(1);
fill(table, 1);
table[0] = opts.nul;
// control chars
table.subarray(1, 32).fill(opts.control);
table.subarray(0x7f, 0xa0).fill(opts.control);
fill(table, opts.control, 1, 32);
fill(table, opts.control, 0x7f, 0xa0);
// apply wide char rules first
// wide chars
table.subarray(0x1100, 0x1160).fill(2);
fill(table, 2, 0x1100, 0x1160);
table[0x2329] = 2;
table[0x232a] = 2;
table.subarray(0x2e80, 0xa4d0).fill(2);
fill(table, 2, 0x2e80, 0xa4d0);
table[0x303f] = 1; // wrongly in last line
table.subarray(0xac00, 0xd7a4).fill(2);
table.subarray(0xf900, 0xfb00).fill(2);
table.subarray(0xfe10, 0xfe1a).fill(2);
table.subarray(0xfe30, 0xfe70).fill(2);
table.subarray(0xff00, 0xff61).fill(2);
table.subarray(0xffe0, 0xffe7).fill(2);
fill(table, 2, 0xac00, 0xd7a4);
fill(table, 2, 0xf900, 0xfb00);
fill(table, 2, 0xfe10, 0xfe1a);
fill(table, 2, 0xfe30, 0xfe70);
fill(table, 2, 0xff00, 0xff61);
fill(table, 2, 0xffe0, 0xffe7);
// apply combining last to ensure we overwrite
// wrongly wide set chars:
@@ -118,7 +120,7 @@ export const wcwidth = (function(opts: {nul: number, control: number}): (ucs: nu
// through to wide check so we simply do here the opposite
// combining 0
for (let r = 0; r < COMBINING_BMP.length; ++r) {
table.subarray(COMBINING_BMP[r][0], COMBINING_BMP[r][1] + 1).fill(0);
fill(table, 0, COMBINING_BMP[r][0], COMBINING_BMP[r][1] + 1);
}
return function (num: number): number {