735 lines
19 KiB
Plaintext
735 lines
19 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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* Bubble + cow rendering for baresay (no imports; prepended before src/baresay.js).
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*/
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/** @param {string} text @param {number} width @param {boolean} noWrap */
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function bareBaresayWrap(text, width, noWrap) {
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const t = String(text || '').replace(/\r\n/g, '\n')
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if (noWrap) {
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const line = t.replace(/\n/g, ' ')
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return line.length ? [line] : ['']
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}
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const out = []
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const lim = Math.max(8, Math.min(200, width | 0)) || 40
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for (const para of t.split('\n')) {
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if (!para.trim()) {
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out.push('')
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continue
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}
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let rest = para.trim()
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while (rest.length) {
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if (rest.length <= lim) {
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out.push(rest)
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break
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}
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let cut = rest.lastIndexOf(' ', lim)
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if (cut <= 0) cut = lim
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const piece = rest.slice(0, cut).trimEnd()
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if (!piece.length) {
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out.push(rest.slice(0, lim))
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rest = rest.slice(lim).trimStart()
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} else {
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out.push(piece)
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rest = rest.slice(cut).trimStart()
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}
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}
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}
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return out.length ? out : ['']
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}
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/**
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* @param {string[]} lines
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* @param {{ think?: boolean, rainbow?: boolean }} opts
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*/
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function bareBaresayBalloon(lines, opts) {
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const think = !!(opts && opts.think)
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const rainbow = !!(opts && opts.rainbow)
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const rows = lines.map((l) => String(l))
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const n = rows.length
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const longest = Math.max(...rows.map((r) => r.length), 2)
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const padded = rows.map((r) => r.padEnd(longest))
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/** @type {string[]} */
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const mid = []
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if (n === 1) {
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const inner = think
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? '( ' + padded[0] + ' )'
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: '< ' + padded[0] + ' >'
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mid.push(inner)
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} else if (think) {
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for (let i = 0; i < n; i++) {
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mid.push('( ' + padded[i] + ' )')
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}
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} else {
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for (let i = 0; i < n; i++) {
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let L = '|'
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let R = '|'
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if (i === 0) {
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L = '/'
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R = '\\'
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} else if (i === n - 1) {
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L = '\\'
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R = '/'
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}
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mid.push(L + ' ' + padded[i] + ' ' + R)
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}
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}
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const topUnders = Math.max(0, mid[0].length - 2)
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const botDash = Math.max(0, mid[mid.length - 1].length - 2)
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/** @type {string[]} */
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const out = []
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out.push(' ' + '_'.repeat(topUnders))
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if (rainbow) {
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const ansi = bareBaresayRainbowCodes()
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let k = 0
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for (const line of mid) {
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const c = ansi[k % ansi.length]
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k++
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out.push(c + line + '\x1b[0m')
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}
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} else {
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for (const line of mid) out.push(line)
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}
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out.push(' ' + '-'.repeat(botDash))
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return out
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}
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function bareBaresayRainbowCodes() {
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return [
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'\x1b[31m',
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'\x1b[91m',
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'\x1b[33m',
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'\x1b[32m',
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'\x1b[36m',
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'\x1b[34m',
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'\x1b[35m'
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]
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}
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/** Extract figure body from .bare template text (Perl heredoc or raw). */
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function bareBaresayExtractCow(raw) {
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const s = String(raw || '').replace(/^\ufeff/, '')
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// cowsay uses: $the_cow = <<"EOC"; ← semicolon before newline
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const m = s.match(
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/\$the_cow\s*=\s*<<"EOC"\s*;?\s*\r?\n([\s\S]*?)\r?\n\s*EOC\s*(?:\r?\n|$)/m
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)
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if (m)
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return m[1].replace(/\r\n/g, '\n').replace(/\n+$/, '') + '\n'
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return s.replace(/\r\n/g, '\n').trimEnd() + '\n'
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}
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/**
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* @param {string} template
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* @param {string} eyes two chars
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* @param {string} tongue one char
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* @param {string} thoughts
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*/
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function bareBaresayFillCow(template, eyes, tongue, thoughts) {
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const e = (eyes || 'oo').slice(0, 2).padEnd(2, 'o')
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const L = e.charAt(0) || 'o'
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const R = e.charAt(1) || 'o'
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const tg = (tongue || ' ').slice(0, 1)
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const th = thoughts || '\\'
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return template
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.replace(/\$thoughts/g, th)
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.replace(/\$eyes/g, e)
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.replace(/\$L/g, L)
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.replace(/\$R/g, R)
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.replace(/\$tongue/g, tg)
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}
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/** @param {string} flag */
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function bareBaresayPreset(flag) {
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switch (flag) {
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case 'b':
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return { eyes: '==', tongue: ' ' }
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case 'd':
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return { eyes: 'XX', tongue: 'U' }
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case 'g':
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return { eyes: '$$', tongue: ' ' }
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case 'p':
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return { eyes: '@@', tongue: ' ' }
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case 's':
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return { eyes: '**', tongue: ' ' }
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case 't':
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return { eyes: '--', tongue: ' ' }
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case 'w':
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return { eyes: '@@', tongue: ' ' }
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case 'y':
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return { eyes: '..', tongue: ' ' }
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default:
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return { eyes: 'oo', tongue: ' ' }
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}
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}
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/**
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* @param {string} message
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* @param {string} cowBody filled lines (no vars)
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* @param {{ width: number, noWrap: boolean, think?: boolean, rainbow?: boolean }} opts
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*/
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function bareBaresayCompose(message, cowBody, opts) {
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const width = opts.width | 0
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const wrapped = bareBaresayWrap(message, width, opts.noWrap)
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const balloon = bareBaresayBalloon(wrapped, {
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think: opts.think,
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rainbow: opts.rainbow
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})
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const cowLines = cowBody.replace(/\s+$/, '').split('\n')
|
|
return balloon.concat(cowLines).join('\n') + '\n'
|
|
}
|
|
|
|
/** Minimal bear if no cowfile on disk (ASCII). */
|
|
function bareBaresayFallbackBearTemplate() {
|
|
return [
|
|
' $thoughts',
|
|
' $thoughts __ __',
|
|
' $thoughts / \\.-"""-./ \\',
|
|
' $thoughts \\ - - /',
|
|
' $thoughts | $L $R |',
|
|
' $thoughts \\ .-\'\'\'-. /',
|
|
" $thoughts '-\\__Y__/-'",
|
|
' $thoughts \u0060---\u0060'
|
|
].join('\n')
|
|
}
|
|
|
|
async function run(ctx, argv) {
|
|
const raw0 = argv && argv.length ? argv[0] : 'baresay'
|
|
const slash = String(raw0).lastIndexOf('/')
|
|
const prog =
|
|
slash >= 0 ? String(raw0).slice(slash + 1) || 'baresay' : String(raw0)
|
|
|
|
/** @param {string} msg */
|
|
const usage = (msg) => {
|
|
if (msg) ctx.console.error(prog + ': ' + msg)
|
|
ctx.console.error(
|
|
'usage: ' +
|
|
prog +
|
|
' [-h] [-l] [-n] [-W COLS] [-f name|path] [-e XX] [-T C] [-bdgpstwy] [--think] [--rainbow] [-R|--random] [MESSAGE...]\n' +
|
|
' ' +
|
|
prog +
|
|
' reads stdin when no MESSAGE and stdin is non-empty.'
|
|
)
|
|
ctx.exitCode = 2
|
|
}
|
|
|
|
let width = 40
|
|
let noWrap = false
|
|
let cowKey = 'bear'
|
|
let cowPath = ''
|
|
let listOnly = false
|
|
let eyes = 'oo'
|
|
let tongue = ' '
|
|
let think = false
|
|
let rainbow = false
|
|
let randomPick = false
|
|
/** @type {string[]} */
|
|
const operands = []
|
|
|
|
for (let i = 1; i < argv.length; i++) {
|
|
const a = argv[i]
|
|
if (a === '--') {
|
|
operands.push(...argv.slice(i + 1))
|
|
break
|
|
}
|
|
if (a === '-h' || a === '--help') {
|
|
usage('')
|
|
return
|
|
}
|
|
if (a === '-l') {
|
|
listOnly = true
|
|
continue
|
|
}
|
|
if (a === '-n') {
|
|
noWrap = true
|
|
continue
|
|
}
|
|
if (a === '--think' || a === '-th') {
|
|
think = true
|
|
continue
|
|
}
|
|
if (a === '--rainbow') {
|
|
rainbow = true
|
|
continue
|
|
}
|
|
if (a === '-R' || a === '--random') {
|
|
randomPick = true
|
|
continue
|
|
}
|
|
if (a === '-W' || a === '--width') {
|
|
const v = argv[++i]
|
|
const n = v != null ? parseInt(String(v), 10) : NaN
|
|
if (!Number.isFinite(n) || n < 1) {
|
|
usage('invalid width')
|
|
return
|
|
}
|
|
width = n
|
|
continue
|
|
}
|
|
if (a.startsWith('-W') && a.length > 2) {
|
|
const n = parseInt(a.slice(2), 10)
|
|
if (!Number.isFinite(n) || n < 1) {
|
|
usage('invalid width')
|
|
return
|
|
}
|
|
width = n
|
|
continue
|
|
}
|
|
if (a === '-f' || a === '--file') {
|
|
const v = argv[++i]
|
|
if (v == null) {
|
|
usage('missing character file')
|
|
return
|
|
}
|
|
if (v.startsWith('/') || v.startsWith('.')) cowPath = v
|
|
else cowKey = v.replace(/\.(bare|cow)$/i, '')
|
|
continue
|
|
}
|
|
if (a.startsWith('-f') && a.length > 2) {
|
|
const v = a.slice(2)
|
|
if (v.startsWith('/') || v.startsWith('.')) cowPath = v
|
|
else cowKey = v.replace(/\.(bare|cow)$/i, '')
|
|
continue
|
|
}
|
|
if (a === '-e') {
|
|
const v = argv[++i]
|
|
if (v == null || String(v).length < 1) {
|
|
usage('missing eyes')
|
|
return
|
|
}
|
|
eyes = String(v).slice(0, 2).padEnd(2, ' ')
|
|
continue
|
|
}
|
|
if (a.startsWith('-e') && a.length > 2) {
|
|
eyes = a.slice(2, 4).padEnd(2, ' ')
|
|
continue
|
|
}
|
|
if (a === '-T') {
|
|
const v = argv[++i]
|
|
tongue = v != null && String(v).length ? String(v).slice(0, 1) : ' '
|
|
continue
|
|
}
|
|
if (a.startsWith('-T') && a.length > 2) {
|
|
tongue = a.slice(2, 3) || ' '
|
|
continue
|
|
}
|
|
{
|
|
const mm = a.match(/^-([bdgpstwy])$/)
|
|
if (mm) {
|
|
const p = bareBaresayPreset(mm[1])
|
|
eyes = p.eyes
|
|
tongue = p.tongue
|
|
continue
|
|
}
|
|
}
|
|
if (a.startsWith('-') && a.length > 1) {
|
|
usage('unknown option: ' + a)
|
|
return
|
|
}
|
|
operands.push(a)
|
|
}
|
|
|
|
const vfs = ctx.vfs
|
|
const b4 = ctx.b4a
|
|
|
|
/** @returns {Promise<string[]>} */
|
|
async function listShareCows() {
|
|
const dir = '/share/baresay'
|
|
/** @type {string[]} */
|
|
const names = []
|
|
if (!vfs || typeof vfs.readdir !== 'function') return names
|
|
try {
|
|
for await (const n of vfs.readdir(dir)) {
|
|
if (typeof n === 'string' && /\.bare$/i.test(n)) {
|
|
names.push(n.replace(/\.bare$/i, ''))
|
|
}
|
|
}
|
|
} catch {
|
|
/* ignore */
|
|
}
|
|
return names.sort()
|
|
}
|
|
|
|
if (listOnly) {
|
|
const names = await listShareCows()
|
|
for (const n of names) ctx.console.log(n)
|
|
ctx.exitCode = 0
|
|
return
|
|
}
|
|
|
|
/** @type {string} */
|
|
let message = operands.join(' ')
|
|
if (!message.trim()) {
|
|
message = bareStdin(ctx).replace(/\r\n/g, '\n').trimEnd()
|
|
}
|
|
if (randomPick) {
|
|
const names = await listShareCows()
|
|
const pool = names.length ? names : ['bear']
|
|
cowKey = pool[Math.floor(Math.random() * pool.length)]
|
|
cowPath = ''
|
|
}
|
|
|
|
/** @returns {Promise<string | null>} */
|
|
async function readCowAt(path) {
|
|
if (!vfs || typeof vfs.readFile !== 'function') return null
|
|
try {
|
|
const buf = await vfs.readFile(path)
|
|
if (!buf) return null
|
|
return b4 ? b4.toString(buf) : String(buf)
|
|
} catch {
|
|
return null
|
|
}
|
|
}
|
|
|
|
let rawCow = ''
|
|
if (cowPath) {
|
|
rawCow = (await readCowAt(cowPath)) || ''
|
|
} else {
|
|
const p = '/share/baresay/' + cowKey + '.bare'
|
|
rawCow = (await readCowAt(p)) || ''
|
|
}
|
|
if (!rawCow.trim()) {
|
|
if (cowKey === 'bear' && !cowPath) {
|
|
rawCow = bareBaresayFallbackBearTemplate()
|
|
} else {
|
|
ctx.console.error(
|
|
prog +
|
|
': character file not found: ' +
|
|
(cowPath || '/share/baresay/' + cowKey + '.bare')
|
|
)
|
|
ctx.exitCode = 1
|
|
return
|
|
}
|
|
}
|
|
|
|
const template = bareBaresayExtractCow(rawCow)
|
|
const filled = bareBaresayFillCow(template, eyes, tongue, '\\')
|
|
const out = bareBaresayCompose(message, filled, {
|
|
width,
|
|
noWrap,
|
|
think,
|
|
rainbow
|
|
})
|
|
|
|
const w = globalThis.process?.stdout?.write
|
|
if (typeof w === 'function') {
|
|
w.call(globalThis.process.stdout, out)
|
|
} else {
|
|
ctx.console.log(out.replace(/\n$/, ''))
|
|
}
|
|
ctx.exitCode = 0
|
|
}
|