100 lines
2.6 KiB
Plaintext
100 lines
2.6 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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function joinDirFile(dir, name) {
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if (!dir || dir === '.') return name
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const d = dir.endsWith('/') ? dir.slice(0, -1) : dir
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return d + '/' + name
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}
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async function run(ctx, argv) {
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const names = argv.slice(1).filter((a) => !a.startsWith('-'))
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if (!names.length) {
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ctx.console.error('which: missing argument')
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ctx.exitCode = 1
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return
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}
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const pathEnv = ctx.vfs.env.PATH || '/bin'
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const dirs = pathEnv.split(':').filter(Boolean)
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let miss = 0
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for (const cmd of names) {
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if (cmd.includes('/')) {
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const buf = await ctx.vfs.readFile(cmd)
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if (buf != null) ctx.console.log(ctx.vfs.resolveLogical(cmd))
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else miss++
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continue
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}
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let found = false
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for (const dir of dirs) {
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const p = joinDirFile(dir, cmd)
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const buf = await ctx.drive.get(p, { follow: true })
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if (buf) {
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ctx.console.log(p)
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found = true
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break
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}
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}
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if (!found) miss++
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}
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if (miss) ctx.exitCode = 1
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}
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