590 lines
16 KiB
Plaintext
590 lines
16 KiB
Plaintext
/* BARE_OS_BIN_API 1.0.0 — bump when staged /bin script semantics change (see developer guide). */
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/** Shared helpers for drive-resident /bin scripts (prepended before each command). */
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function bareStdin(ctx) {
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return typeof ctx.shellStdin === 'string' ? ctx.shellStdin : ''
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}
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/** @param {number} mode @param {'file' | 'directory' | 'symlink'} type */
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function bareFormatModeString(mode, type) {
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const typeChar = type === 'directory' ? 'd' : type === 'symlink' ? 'l' : '-'
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const perm = mode & 0o777
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const r = (bit) => (perm & bit ? 'r' : '-')
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const w = (bit) => (perm & bit ? 'w' : '-')
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const x = (bit) => (perm & bit ? 'x' : '-')
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return (
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typeChar +
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r(0o400) +
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w(0o200) +
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x(0o100) +
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r(0o040) +
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w(0o020) +
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x(0o010) +
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r(0o004) +
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w(0o002) +
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x(0o001)
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)
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}
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/** @param {number} mtimeMs @param {number} [nowMs] */
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function bareFormatLsMtime(mtimeMs, nowMs) {
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const now = nowMs != null ? nowMs : Date.now()
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const d = new Date(mtimeMs)
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const months = [
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'Jan',
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'Feb',
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'Mar',
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'Apr',
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'May',
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'Jun',
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'Jul',
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'Aug',
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'Sep',
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'Oct',
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'Nov',
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'Dec'
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]
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const mon = months[d.getMonth()]
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const day = String(d.getDate()).padStart(2, ' ')
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const sixMo = 180 * 24 * 3600 * 1000
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if (Math.abs(now - mtimeMs) > sixMo) {
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const yr = String(d.getFullYear()).padStart(4, ' ')
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return mon + ' ' + day + ' ' + yr
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}
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const hh = String(d.getHours()).padStart(2, '0')
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const mm = String(d.getMinutes()).padStart(2, '0')
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return mon + ' ' + day + ' ' + hh + ':' + mm
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}
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/** @param {number} size */
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function barePosixBlocks(size) {
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return Math.ceil(Number(size) / 512) || 0
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}
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/**
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* Raw stdout for NUL/binary when **`process.stdout.write`** is missing.
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* If **`ctx.bareOsBinWrite(Uint8Array|string)`** is set (tests / host), use it.
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* @param {Record<string, unknown>} ctx
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* @param {string | Uint8Array} chunk
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* @returns {boolean}
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*/
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function bareOsEmitRaw(ctx, chunk) {
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if (typeof ctx.bareOsBinWrite === 'function') {
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const b4 = ctx.b4a
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const u8 =
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typeof chunk === 'string'
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? b4 && typeof b4.from === 'function'
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? b4.from(chunk)
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: new TextEncoder().encode(chunk)
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: chunk
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ctx.bareOsBinWrite(u8 instanceof Uint8Array ? u8 : new Uint8Array(u8))
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return true
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}
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const w = globalThis.process?.stdout?.write
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if (typeof w === 'function') {
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w.call(globalThis.process.stdout, chunk)
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return true
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}
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return false
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}
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/** Session env map (`vfs.env`, then `ctx.env`). Never throws. */
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function bareOsEnv(ctx) {
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const v = ctx && ctx.vfs && ctx.vfs.env
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if (v && typeof v === 'object') return v
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const e = ctx && ctx.env
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if (e && typeof e === 'object') return e
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return {}
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}
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/**
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* Strict POSIX-ish decimal integer (no octal, no exponent, no empty).
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* @param {unknown} s
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* @returns {number}
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*/
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function bareOsParseDecInt(s) {
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const t = String(s == null ? '' : s).trim()
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if (!/^[+-]?(?:0|[1-9][0-9]*)$/.test(t)) return NaN
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const n = Number.parseInt(t, 10)
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return Number.isSafeInteger(n) ? n : NaN
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}
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/** @param {unknown} s */
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function bareOsParseNonNegInt(s) {
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const n = bareOsParseDecInt(s)
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return n >= 0 ? n : NaN
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}
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/**
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* @param {Record<string, unknown>} ctx
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* @param {string} name
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* @param {number} fallback
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* @param {number} [min]
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* @param {number} [max]
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*/
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function bareOsEnvInt(ctx, name, fallback, min, max) {
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const raw = bareOsEnv(ctx)[name]
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if (raw == null || raw === '') return fallback
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const n = Number.parseInt(String(raw), 10)
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if (!Number.isFinite(n)) return fallback
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let v = n
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if (min != null && v < min) v = min
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if (max != null && v > max) v = max
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return v
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}
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/**
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* @param {Record<string, unknown>} ctx
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* @param {string} msg
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* @param {number} [code]
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*/
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function bareOsFail(ctx, msg, code) {
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if (msg) ctx.console.error(msg)
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ctx.exitCode = code == null ? 1 : code
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}
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/** @param {unknown} e */
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function bareOsIsNotFoundErr(e) {
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const code = e && typeof e === 'object' ? e.code : ''
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if (code === 'ENOENT') return true
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const msg = String((e && e.message) || e || '')
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return /ENOENT|No such file|not found/i.test(msg)
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}
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/**
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* @param {Record<string, unknown>} ctx
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* @param {unknown} buf
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* @returns {Uint8Array}
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*/
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function bareOsToU8(ctx, buf) {
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if (!buf) return new Uint8Array(0)
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if (buf instanceof Uint8Array) return buf
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if (ctx && ctx.b4a && typeof ctx.b4a.from === 'function') return ctx.b4a.from(buf)
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return new Uint8Array(buf)
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}
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/** @param {string} dir @param {string} name */
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function bareOsJoinPath(dir, name) {
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const d = String(dir || '').replace(/\/+$/, '')
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const n = String(name || '').replace(/^\/+/, '')
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if (!d || d === '/') return '/' + n
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return d + '/' + n
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}
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/** @param {string} p */
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function bareOsBaseName(p) {
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const t = String(p || '').replace(/\/+$/, '')
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if (!t || t === '/') return t === '/' ? '/' : ''
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const i = t.lastIndexOf('/')
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return i < 0 ? t : t.slice(i + 1) || t
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}
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/** @param {string} p */
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function bareOsParentDir(p) {
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const t = String(p || '').replace(/\/+$/, '') || '/'
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if (t === '/') return '/'
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const i = t.lastIndexOf('/')
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return i <= 0 ? '/' : t.slice(0, i) || '/'
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}
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/** @param {string} p */
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function bareOsNormPath(p) {
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return String(p || '').replace(/\/+$/, '') || '/'
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}
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/**
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* @param {Record<string, unknown>} ctx
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* @param {string} p
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*/
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function bareOsResolvePath(ctx, p) {
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if (ctx && ctx.vfs && typeof ctx.vfs.resolveLogical === 'function') {
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try {
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return String(ctx.vfs.resolveLogical(p) || p)
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} catch {
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/* fall through */
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}
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}
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return String(p || '')
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}
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/**
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* True when dest is src or lives under src (self-copy / self-move).
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* @param {Record<string, unknown>} ctx
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* @param {string} src
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* @param {string} dest
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*/
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function bareOsDestInsideSrc(ctx, src, dest) {
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const s = bareOsNormPath(bareOsResolvePath(ctx, src))
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const d = bareOsNormPath(bareOsResolvePath(ctx, dest))
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if (s === d) return true
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if (s === '/') return d !== '/'
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return d === s || d.startsWith(s + '/')
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}
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const BARE_OS_B64_ALPH =
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'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
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/** @param {Uint8Array} u8 */
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function bareOsB64Encode(u8) {
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let out = ''
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let i = 0
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for (; i + 2 < u8.length; i += 3) {
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const n = (u8[i] << 16) | (u8[i + 1] << 8) | u8[i + 2]
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out +=
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BARE_OS_B64_ALPH[(n >> 18) & 63] +
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BARE_OS_B64_ALPH[(n >> 12) & 63] +
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BARE_OS_B64_ALPH[(n >> 6) & 63] +
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BARE_OS_B64_ALPH[n & 63]
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}
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const rest = u8.length - i
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if (rest === 1) {
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const n = u8[i] << 16
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out += BARE_OS_B64_ALPH[(n >> 18) & 63] + BARE_OS_B64_ALPH[(n >> 12) & 63] + '=='
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} else if (rest === 2) {
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const n = (u8[i] << 16) | (u8[i + 1] << 8)
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out +=
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BARE_OS_B64_ALPH[(n >> 18) & 63] +
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BARE_OS_B64_ALPH[(n >> 12) & 63] +
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BARE_OS_B64_ALPH[(n >> 6) & 63] +
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'='
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}
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return out
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}
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/**
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* RFC 4648 Base64 decode (also accepts URL-safe alphabet). Rejects junk.
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* @param {string} s
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* @returns {Uint8Array}
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*/
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function bareOsB64Decode(s) {
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const t = String(s).replace(/\s+/g, '')
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if (!t) return new Uint8Array(0)
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if (t.length % 4 === 1) throw new Error('invalid base64 length')
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let pad = 0
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if (t.endsWith('==')) pad = 2
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else if (t.endsWith('=')) pad = 1
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const body = pad ? t.slice(0, t.length - pad) : t
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const bytes = []
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let buf = 0
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let bits = 0
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for (let i = 0; i < body.length; i++) {
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const c = body[i]
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let v = BARE_OS_B64_ALPH.indexOf(c)
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if (v < 0) {
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if (c === '-') v = 62
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else if (c === '_') v = 63
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else throw new Error('invalid base64 character')
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}
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buf = (buf << 6) | v
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bits += 6
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if (bits >= 8) {
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bits -= 8
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bytes.push((buf >> bits) & 255)
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}
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}
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if (pad) {
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const want = Math.floor((body.length * 6) / 8)
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if (bytes.length > want) bytes.length = want
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}
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return new Uint8Array(bytes)
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}
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/**
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* @param {string} s
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* @returns {Uint8Array}
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*/
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function bareOsHexDecode(s) {
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const t = String(s).replace(/\s+/g, '')
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if (t.length % 2 !== 0) throw new Error('odd hex length')
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const out = new Uint8Array(t.length / 2)
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for (let i = 0; i < out.length; i++) {
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const pair = t.slice(i * 2, i * 2 + 2)
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if (!/^[0-9a-fA-F]{2}$/.test(pair)) throw new Error('invalid hex')
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out[i] = Number.parseInt(pair, 16)
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}
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return out
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}
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/** @param {Uint8Array} u8 */
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function bareOsHexEncode(u8) {
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let s = ''
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for (let i = 0; i < u8.length; i++) s += u8[i].toString(16).padStart(2, '0')
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return s
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}
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/**
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* Shared GNU-style checksum FILE / stdin loop used by *sum commands.
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* @param {Record<string, unknown>} ctx
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* @param {string[]} argv
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* @param {{
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* cmd: string,
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* help?: string,
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* digest: (u8: Uint8Array) => string | Promise<string>
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* }} opts
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*/
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async function bareChecksumRun(ctx, argv, opts) {
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const cmd = String(opts.cmd || 'checksum')
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const help =
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opts.help ||
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'usage: ' +
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cmd +
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' [FILE]...\nWith no FILE, or when FILE is -, read standard input.'
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const digest = opts.digest
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const paths = []
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for (let i = 1; i < argv.length; i++) {
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const a = argv[i]
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if (a === '-h' || a === '--help') {
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ctx.console.log(help)
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ctx.exitCode = 0
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return
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}
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if (a.startsWith('-') && a !== '-') {
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ctx.console.error(cmd + ': unsupported option ' + a)
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ctx.exitCode = 1
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return
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}
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paths.push(a)
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}
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const b4 = ctx.b4a
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async function one(name, buf) {
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const u8 = buf instanceof Uint8Array ? buf : new Uint8Array(buf)
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try {
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const hex = await digest(u8)
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ctx.console.log(hex + ' ' + name)
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} catch (e) {
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ctx.console.error(cmd + ': ' + (e.message || e))
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ctx.exitCode = 1
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}
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}
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if (!paths.length || (paths.length === 1 && paths[0] === '-')) {
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await one('-', b4.from(bareStdin(ctx)))
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return
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}
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for (const p of paths) {
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if (p === '-') {
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await one('-', b4.from(bareStdin(ctx)))
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continue
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}
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const b = await ctx.vfs.readFile(p)
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if (!b) {
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ctx.console.error(cmd + ': ' + p + ': No such file')
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ctx.exitCode = 1
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continue
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}
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await one(p, b)
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}
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}
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/**
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* WebCrypto hex digest; throws the same missing-subtle message as the old *sum files.
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* @param {string} algo
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* @param {string} missingMsg
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* @returns {(u8: Uint8Array) => Promise<string>}
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*/
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function bareSubtleHexDigest(algo, missingMsg) {
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return async function (u8) {
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const subtle = globalThis.crypto?.subtle
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if (!subtle || typeof subtle.digest !== 'function') {
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throw new Error(missingMsg)
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}
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const hash = await subtle.digest(algo, u8)
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return bareOsHexEncode(new Uint8Array(hash))
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}
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}
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/**
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* Owner/group name → uid/gid used by chown / chgrp.
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* @param {string} spec
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* @param {Record<string, string>} env
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* @returns {number | null}
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*/
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function parseGroupSpec(spec, env) {
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const s = String(spec).trim()
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if (!s) return null
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if (/^\d+$/.test(s)) {
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const n = Number.parseInt(s, 10)
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return Number.isFinite(n) ? n : null
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}
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const g = (env.GROUP || env.USER || 'guest').trim()
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if (s === 'root') return 0
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if (s === 'guest' || s === 'nobody') return 65534
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if (g && s === g) {
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const gid = Number.parseInt(String(env.GID ?? '65534'), 10)
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return Number.isFinite(gid) ? gid : 65534
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}
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return null
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}
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/**
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* User name / numeric uid used by chown.
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* @param {string} spec
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* @param {Record<string, string>} env
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* @returns {{ uid: number | null, gid: number | null }}
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*/
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function parseIdSpec(spec, env) {
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const s = String(spec).trim()
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if (!s) return { uid: null, gid: null }
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if (/^\d+$/.test(s)) {
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const n = Number.parseInt(s, 10)
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return { uid: Number.isFinite(n) ? n : null, gid: null }
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}
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const u = (env.USER || env.LOGNAME || '').trim()
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if (s === 'root') return { uid: 0, gid: null }
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if (s === 'guest' || s === 'nobody') return { uid: 65534, gid: null }
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if (u && s === u) {
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const uid = Number.parseInt(String(env.UID ?? '65534'), 10)
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return { uid: Number.isFinite(uid) ? uid : 65534, gid: null }
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}
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return { uid: null, gid: null }
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}
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/**
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* Inspect the guest TUI SDK (`ctx.tui` / `ctx.sdk`).
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* Subcommands: default info, --json, demo.
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*/
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async function run(ctx, argv) {
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const args = argv.slice(1)
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for (const a of args) {
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if (a === '-h' || a === '--help') {
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ctx.console.log('Usage: tui [--json] [demo]')
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ctx.console.log(
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'Inspect ctx.tui (version, TTY, size, theme). tui demo runs a sample app.'
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)
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return
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}
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}
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if (!ctx.tui) {
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ctx.console.error('tui: ctx.tui missing (set BARE_OS_TUI=0 disables it)')
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ctx.exitCode = 1
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return
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}
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if (args[0] === 'demo') {
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await tuiRunDemo(ctx)
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return
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}
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const theme = ctx.tui.theme()
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const size = ctx.tui.size()
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const info = {
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version: ctx.tui.version,
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ctxApi: ctx.bareOsCtxApiVersion || '',
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isTTY: ctx.tui.isTTY(),
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width: size.width,
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height: size.height,
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theme: theme.name,
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colorDepth: theme.depth,
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noColor: theme.noColor,
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tuiSdk:
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ctx.bareOsRuntimeCaps &&
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ctx.bareOsRuntimeCaps.features &&
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ctx.bareOsRuntimeCaps.features.tuiSdk === true
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}
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if (args[0] === '--json' || args.indexOf('--json') >= 0) {
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ctx.console.log(JSON.stringify(info))
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return
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}
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ctx.console.log('tui ' + info.version)
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ctx.console.log('ctxApi ' + info.ctxApi)
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ctx.console.log('tty ' + (info.isTTY ? 'yes' : 'no'))
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ctx.console.log('size ' + info.width + 'x' + info.height)
|
|
ctx.console.log('theme ' + info.theme + ' depth=' + info.colorDepth)
|
|
ctx.console.log('tuiSdk ' + (info.tuiSdk ? 'on' : 'off'))
|
|
}
|
|
|
|
function tuiWrap(text, w) {
|
|
const words = String(text).split(' ')
|
|
const out = []
|
|
let line = ''
|
|
for (const word of words) {
|
|
if (line && line.length + 1 + word.length > w) {
|
|
out.push(line)
|
|
line = word
|
|
} else {
|
|
line = line ? line + ' ' + word : word
|
|
}
|
|
}
|
|
if (line) out.push(line)
|
|
return out.join('\n')
|
|
}
|
|
|
|
async function tuiRunDemo(ctx) {
|
|
if (!ctx.tui.isTTY()) {
|
|
ctx.console.error('tui demo: needs a TTY')
|
|
ctx.exitCode = 1
|
|
return
|
|
}
|
|
const items = [
|
|
{
|
|
title: 'ctx.tui',
|
|
desc: 'First-party guest TUI: TEA Program, style, widgets. No import.'
|
|
},
|
|
{
|
|
title: 'vfs',
|
|
desc: 'Use ctx.vfs for files. Filepicker talks to VFS, not host fs.'
|
|
},
|
|
{
|
|
title: 'theme',
|
|
desc: 'BARE_OS_THEME and NO_COLOR / BARE_OS_COLOR_DEPTH apply to style().'
|
|
}
|
|
]
|
|
const app = {
|
|
list: ctx.tui.list.create({
|
|
items: items,
|
|
height: 8,
|
|
width: 16,
|
|
filterable: true
|
|
}),
|
|
detail: ctx.tui.viewport.create({ width: 40, height: 8 }),
|
|
width: 80,
|
|
height: 24,
|
|
init: function () {
|
|
this._sync()
|
|
return null
|
|
},
|
|
_sync: function () {
|
|
const it = this.list.selectedItem()
|
|
this.detail.setContent(
|
|
it ? tuiWrap(it.desc, this.detail.width || 40) : ''
|
|
)
|
|
},
|
|
update: function (msg) {
|
|
if (ctx.tui.key.matches(msg, 'q', 'ctrl+c')) return [this, ctx.tui.quit]
|
|
if (msg && msg.type === 'resize') {
|
|
this.width = msg.width
|
|
this.height = msg.height
|
|
this.list.height = Math.max(4, this.height - 6)
|
|
this.detail.height = Math.max(4, this.height - 6)
|
|
this.detail.width = Math.max(12, this.width - 22)
|
|
}
|
|
const pair = this.list.update(msg)
|
|
this.list = pair[0]
|
|
this._sync()
|
|
const d = this.detail.update(msg)
|
|
this.detail = d[0]
|
|
return [this, pair[1] || d[1]]
|
|
},
|
|
view: function () {
|
|
const left = ctx.tui
|
|
.style()
|
|
.border(ctx.tui.style.borders.rounded)
|
|
.width(18)
|
|
.render(this.list.view())
|
|
const right = ctx.tui
|
|
.style()
|
|
.border(ctx.tui.style.borders.rounded)
|
|
.width(this.detail.width || 40)
|
|
.render(this.detail.view())
|
|
const body = ctx.tui.style.joinHorizontal(
|
|
ctx.tui.style.position.top,
|
|
left,
|
|
' ',
|
|
right
|
|
)
|
|
return 'tui demo\n' + body + '\n↑/↓ select · / filter · q quit'
|
|
}
|
|
}
|
|
await ctx.tui.run(app)
|
|
}
|