mirror of
https://github.com/Start9Labs/start-os.git
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f2142f0bb3
* add documentation for ai agents * docs: consolidate CLAUDE.md and CONTRIBUTING.md, add style guidelines - Refactor CLAUDE.md to reference CONTRIBUTING.md for build/test/format info - Expand CONTRIBUTING.md with comprehensive build targets, env vars, and testing - Add code style guidelines section with conventional commits - Standardize SDK prettier config to use single quotes (matching web) - Add project-level Claude Code settings to disable co-author attribution * style(sdk): apply prettier with single quotes Run prettier across sdk/base and sdk/package to apply the standardized quote style (single quotes matching web). * docs: add USER.md for per-developer TODO filtering - Add agents/USER.md to .gitignore (contains user identifier) - Document session startup flow in CLAUDE.md: - Create USER.md if missing, prompting for identifier - Filter TODOs by @username tags - Offer relevant TODOs on session start * docs: add i18n documentation task to agent TODOs * docs: document i18n ID patterns in core/ Add agents/i18n-patterns.md covering rust-i18n setup, translation file format, t!() macro usage, key naming conventions, and locale selection. Remove completed TODO item and add reference in CLAUDE.md. * chore: clarify that all builds work on any OS with Docker
100 lines
2.5 KiB
TypeScript
100 lines
2.5 KiB
TypeScript
// a,g,h,A-Z,,,,-
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export function getRandomCharInSet(charset: string): string {
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const set = stringToCharSet(charset)
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let charIdx = Math.floor(
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(crypto.getRandomValues(new Uint32Array(1))[0] / 2 ** 32) * set.len,
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)
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for (let range of set.ranges) {
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if (range.len > charIdx) {
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return String.fromCharCode(range.start.charCodeAt(0) + charIdx)
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}
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charIdx -= range.len
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}
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throw new Error('unreachable')
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}
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function stringToCharSet(charset: string): CharSet {
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let set: CharSet = { ranges: [], len: 0 }
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let start: string | null = null
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let end: string | null = null
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let in_range = false
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for (let char of charset) {
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switch (char) {
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case ',':
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if (start !== null && end !== null) {
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if (start!.charCodeAt(0) > end!.charCodeAt(0)) {
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throw new Error('start > end of charset')
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}
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const len = end.charCodeAt(0) - start.charCodeAt(0) + 1
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set.ranges.push({
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start,
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end,
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len,
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})
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set.len += len
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start = null
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end = null
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in_range = false
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} else if (start !== null && !in_range) {
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set.len += 1
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set.ranges.push({ start, end: start, len: 1 })
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start = null
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} else if (start !== null && in_range) {
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end = ','
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} else if (start === null && end === null && !in_range) {
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start = ','
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} else {
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throw new Error('unexpected ","')
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}
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break
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case '-':
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if (start === null) {
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start = '-'
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} else if (!in_range) {
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in_range = true
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} else if (in_range && end === null) {
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end = '-'
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} else {
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throw new Error('unexpected "-"')
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}
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break
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default:
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if (start === null) {
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start = char
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} else if (in_range && end === null) {
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end = char
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} else {
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throw new Error(`unexpected "${char}"`)
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}
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}
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}
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if (start !== null && end !== null) {
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if (start!.charCodeAt(0) > end!.charCodeAt(0)) {
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throw new Error('start > end of charset')
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}
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const len = end.charCodeAt(0) - start.charCodeAt(0) + 1
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set.ranges.push({
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start,
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end,
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len,
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})
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set.len += len
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} else if (start !== null) {
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set.len += 1
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set.ranges.push({
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start,
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end: start,
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len: 1,
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})
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}
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return set
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}
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type CharSet = {
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ranges: {
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start: string
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end: string
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len: number
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}[]
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len: number
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}
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