mirror of https://github.com/qntm/base65536
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0d936eab75
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e375e2dcae
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@ -40,7 +40,7 @@
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"glob": "^7.1.6",
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"jest": "^26.4.0",
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"rollup": "^2.26.3",
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"safe-code-point": "^2.0.0",
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"safe-code-point": "^1.0.0",
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"standard": "^14.3.3",
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"start-server-and-test": "^1.11.3"
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},
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@ -18,26 +18,24 @@
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// transplanted into `base65536` for use. It is kept here for historical reasons
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// and to ensure reproducibility.
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import SafeCodePoint from 'safe-code-point'
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import safeCodePoint, { generalCategory } from 'safe-code-point'
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// Well these ergonomics are dreadful huh
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export default () => SafeCodePoint('8.0.0').then(safeCodePoint => {
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const safeRange = (min, max) => {
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const safeRange = (min, max) => {
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for (let codePoint = min; codePoint < max; codePoint++) {
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// Code points were chosen entirely from the "Letter, other" general
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// category, for reasons which I no longer recall. Unicode 8.0 was current
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// at the time.
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if (
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safeCodePoint.generalCategory(codePoint) !== 'Lo' ||
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!safeCodePoint(codePoint)
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generalCategory(codePoint, '8.0') !== 'Lo' ||
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!safeCodePoint(codePoint, '8.0')
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) {
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return false
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}
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}
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return true
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}
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}
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const getAllSafeRanges = rangeSize => {
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const getAllSafeRanges = rangeSize => {
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const allSafeRanges = []
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for (let codePoint = 0; codePoint < (1 << 16) + (1 << 20); codePoint += rangeSize) {
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if (safeRange(codePoint, codePoint + rangeSize)) {
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@ -45,20 +43,13 @@ export default () => SafeCodePoint('8.0.0').then(safeCodePoint => {
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}
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}
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return allSafeRanges
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}
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}
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const allSafeRanges = getAllSafeRanges(1 << 8)
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const allSafeRanges = getAllSafeRanges(1 << 8)
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const paddingBlockStart = String.fromCodePoint(allSafeRanges.shift())
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export const paddingBlockStart = String.fromCodePoint(allSafeRanges.shift())
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const blockStarts = allSafeRanges.slice(0, 1 << 8).map(x => String.fromCodePoint(x)).join('')
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return {
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safeCodePoint,
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paddingBlockStart,
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blockStarts
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}
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})
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export const blockStarts = allSafeRanges.slice(0, 1 << 8).map(x => String.fromCodePoint(x)).join('')
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// There are now implementations of
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// Base65536 in numerous programming languages beyond the original JavaScript,
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@ -1,22 +1,15 @@
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/* eslint-env jest */
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import gen from './gen'
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import { eastAsianWidth } from 'safe-code-point'
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import { paddingBlockStart, blockStarts } from './gen'
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describe('gen', () => {
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let generated
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beforeAll(() =>
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gen().then(g => {
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generated = g
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})
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)
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it('generates the correct padding block', () => {
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expect(generated.paddingBlockStart).toBe('ᔀ')
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expect(paddingBlockStart).toBe('ᔀ')
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})
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it('generates the correct blocks', () => {
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expect(generated.blockStarts).toBe(
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expect(blockStarts).toBe(
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'㐀㔀㘀㜀㠀㤀㨀㬀㰀㴀㸀㼀䀀䄀䈀䌀' +
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'䐀䔀䘀䜀䠀䤀䨀䬀䰀一伀倀儀刀匀吀' +
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'唀嘀圀堀夀娀嬀尀崀帀开怀愀戀挀搀' +
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@ -41,7 +34,7 @@ describe('gen', () => {
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// 243 of the blocks are 'W' (wide), the other 13 + 1 are 'N' (neutral,
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// which in effect is narrow). This is significant when considering
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// rendering and wrapping.
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const allBlockStarts = [...generated.blockStarts].map(x => x.codePointAt(0))
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const allBlockStarts = [...blockStarts].map(x => x.codePointAt(0))
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const neutralBlockStarts = [...'ᔀꔀ𐘀𒀀𒄀𒈀𓀀𓄀𓈀𓌀𔐀𔔀𖠀𖤀'].map(x => x.codePointAt(0))
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allBlockStarts.forEach(blockStart => {
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for (let i = 0; i < 1 << 8; i++) {
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@ -51,7 +44,7 @@ describe('gen', () => {
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neutralBlockStart <= codePoint &&
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codePoint < neutralBlockStart + (1 << 8)
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)
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expect(generated.safeCodePoint.eastAsianWidth(codePoint)).toBe(isInNeutralBlock ? 'N' : 'W')
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expect(eastAsianWidth(codePoint, '8.0')).toBe(isInNeutralBlock ? 'N' : 'W')
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}
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})
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})
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