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[READ-ONLY] Mirror of https://github.com/sxzz/hanji. 一字之間，照見五地字形 hanji.sxzz.moe
chinese-characters cjk han hanja hanji hanzi kanji
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104import { varietyOf } from './row.ts'
/** * A broad pattern choice: `v2` means every partition with two distinct forms. * Exact choices keep using their partition signature (`0001`, `0112`, ...), * so existing shared URLs continue to mean exactly what they did before. */const VARIETY_CHOICE = /^v([1-9]\d*)$/
/** * Every non-identical variety is on by default, including the fifth form that * becomes applicable when the opt-in Korean column is shown. Choices that need * more columns than are currently visible stay serialized but do not filter. */export const DEFAULT_PATTERN_CHOICES = ['v2', 'v3', 'v4', 'v5'] as constexport const ALL_PATTERN_CHOICES = 'all'
export const varietyChoice = (variety: number): string => `v${variety}`
export function choiceVariety(choice: string): number | undefined { const match = VARIETY_CHOICE.exec(choice) return match ? Number(match[1]) : undefined}
/** Does one broad or exact choice include this partition? */export function patternChoiceMatches( signature: string, choice: string,): boolean { const variety = choiceVariety(choice) return variety === undefined ? choice === signature : variety === varietyOf(signature)}
/** A row passes when any currently applicable choice includes its partition. */export const patternChoicesMatch = ( signature: string, choices: readonly string[],): boolean => choices.some((choice) => patternChoiceMatches(signature, choice))
/** * Choices made for hidden columns stay serialized but do not filter the table. * Exact signatures are scoped by their length; broad choices are available * only when that many forms can exist among the columns currently on show. */export function applicablePatternChoices( choices: readonly string[], availablePatterns: readonly string[],): string[] { const exact = new Set(availablePatterns) const varieties = new Set(availablePatterns.map(varietyOf)) return choices.filter((choice) => { const variety = choiceVariety(choice) return variety === undefined ? exact.has(choice) : varieties.has(variety) })}
/** * The group button switches between a broad choice and no choice. When exact * children are selected, pressing it replaces those children with the broad * choice instead, which reads as “all patterns with N forms”. */export function toggleVarietyChoice( choices: readonly string[], variety: number, groupPatterns: readonly string[],): string[] { const chosen = new Set(choices) const broad = varietyChoice(variety) if (chosen.has(broad)) chosen.delete(broad) else { for (const pattern of groupPatterns) chosen.delete(pattern) chosen.add(broad) } return [...chosen].toSorted()}
/** Choosing a child turns a broad group into a precise selection. */export function toggleExactPatternChoice( choices: readonly string[], signature: string,): string[] { const chosen = new Set(choices) if (chosen.has(signature)) chosen.delete(signature) else { chosen.delete(varietyChoice(varietyOf(signature))) chosen.add(signature) } return [...chosen].toSorted()}
/** `all` is the explicit URL spelling for no pattern filter. */export function parsePatternChoices(raw: string): string[] { if (raw === ALL_PATTERN_CHOICES) return [] return [...new Set(raw.split(',').filter(Boolean))].toSorted()}
export function serializePatternChoices(choices: readonly string[]): string { return choices.length ? [...new Set(choices)].toSorted().join(',') : ALL_PATTERN_CHOICES}