themes

kernel/bin/theme

@@ -0,0 +1,196 @@
+/* BARE_OS_BIN_API 1.0.0 — bump when staged /bin script semantics change (see developer guide). */
+/** Shared helpers for drive-resident /bin scripts (prepended before each command). */
+function bareStdin(ctx) {
+  return typeof ctx.shellStdin === 'string' ? ctx.shellStdin : ''
+}
+
+/** @param {number} mode @param {'file' | 'directory' | 'symlink'} type */
+function bareFormatModeString(mode, type) {
+  const typeChar = type === 'directory' ? 'd' : type === 'symlink' ? 'l' : '-'
+  const perm = mode & 0o777
+  const r = (bit) => (perm & bit ? 'r' : '-')
+  const w = (bit) => (perm & bit ? 'w' : '-')
+  const x = (bit) => (perm & bit ? 'x' : '-')
+  return (
+    typeChar +
+    r(0o400) +
+    w(0o200) +
+    x(0o100) +
+    r(0o040) +
+    w(0o020) +
+    x(0o010) +
+    r(0o004) +
+    w(0o002) +
+    x(0o001)
+  )
+}
+
+/** @param {number} mtimeMs @param {number} [nowMs] */
+function bareFormatLsMtime(mtimeMs, nowMs) {
+  const now = nowMs != null ? nowMs : Date.now()
+  const d = new Date(mtimeMs)
+  const months = [
+    'Jan',
+    'Feb',
+    'Mar',
+    'Apr',
+    'May',
+    'Jun',
+    'Jul',
+    'Aug',
+    'Sep',
+    'Oct',
+    'Nov',
+    'Dec'
+  ]
+  const mon = months[d.getMonth()]
+  const day = String(d.getDate()).padStart(2, ' ')
+  const sixMo = 180 * 24 * 3600 * 1000
+  if (Math.abs(now - mtimeMs) > sixMo) {
+    const yr = String(d.getFullYear()).padStart(4, ' ')
+    return mon + ' ' + day + '  ' + yr
+  }
+  const hh = String(d.getHours()).padStart(2, '0')
+  const mm = String(d.getMinutes()).padStart(2, '0')
+  return mon + ' ' + day + ' ' + hh + ':' + mm
+}
+
+/** @param {number} size */
+function barePosixBlocks(size) {
+  return Math.ceil(Number(size) / 512) || 0
+}
+
+/**
+ * Theme switcher: list presets, show current, set preset (updates ~/.barerc), re-apply.
+ * Uses ctx.bareOsListThemes / ctx.bareOsApplyTheme when provided by the booter.
+ */
+
+const FALLBACK_THEMES = [
+  'catppuccin_mocha',
+  'default',
+  'dracula',
+  'github_dark',
+  'gruvbox_dark',
+  'nord',
+  'solarized_dark',
+  'tokyo_night'
+]
+
+function themeListFromCtx(ctx) {
+  if (typeof ctx.bareOsListThemes === 'function') {
+    try {
+      const names = ctx.bareOsListThemes()
+      if (Array.isArray(names) && names.length) return names
+    } catch {
+      /* fall through */
+    }
+  }
+  return FALLBACK_THEMES.slice().sort()
+}
+
+async function readBarerc(ctx) {
+  try {
+    const buf = await ctx.vfs.readFile('~/.barerc')
+    return buf ? ctx.b4a.toString(buf) : ''
+  } catch {
+    return ''
+  }
+}
+
+async function writeBarerc(ctx, text) {
+  await ctx.vfs.writeFile('~/.barerc', ctx.b4a.from(text))
+}
+
+/**
+ * Ensure ~/.barerc contains `theme <name>` (replace first theme line or append).
+ * @param {Record<string, unknown>} ctx
+ * @param {string} name
+ */
+async function persistThemeLine(ctx, name) {
+  let text = await readBarerc(ctx)
+  const lines = text.split(/\r?\n/)
+  const themeRe = /^\s*theme\s+/
+  let replaced = false
+  const out = []
+  for (const line of lines) {
+    if (themeRe.test(line)) {
+      if (!replaced) {
+        out.push('theme ' + name)
+        replaced = true
+      }
+    } else out.push(line)
+  }
+  if (!replaced) {
+    if (out.length && out[out.length - 1].trim() !== '') out.push('')
+    out.push('theme ' + name)
+  }
+  const newText = out.join('\n')
+  if (!/\n$/.test(newText) && newText.length) await writeBarerc(ctx, newText + '\n')
+  else await writeBarerc(ctx, newText || 'theme ' + name + '\n')
+}
+
+async function run(ctx, argv) {
+  const env = ctx.vfs?.env || ctx.env || {}
+  const sub = argv[1] || 'list'
+
+  if (sub === 'list') {
+    for (const n of themeListFromCtx(ctx)) ctx.console.log(n)
+    return
+  }
+
+  if (sub === 'current') {
+    const t = env.BARE_OS_THEME != null ? String(env.BARE_OS_THEME) : 'default'
+    ctx.console.log(t)
+    const ls = env.LS_COLORS
+    if (ls != null && String(ls).length) {
+      ctx.console.log('LS_COLORS_len=' + String(ls).length)
+    }
+    return
+  }
+
+  if (sub === 'apply') {
+    if (typeof ctx.bareOsApplyTheme === 'function') {
+      await ctx.bareOsApplyTheme()
+    } else {
+      ctx.console.error('theme: bareOsApplyTheme not available')
+      ctx.exitCode = 1
+    }
+    return
+  }
+
+  if (sub === 'set') {
+    const name = argv[2]
+    if (!name) {
+      ctx.console.error('theme: usage: theme set <name>')
+      ctx.exitCode = 1
+      return
+    }
+    const norm = String(name)
+      .toLowerCase()
+      .trim()
+      .replace(/\s+/g, '_')
+    const valid = new Set(themeListFromCtx(ctx).map((s) => s.toLowerCase()))
+    if (!valid.has(norm)) {
+      ctx.console.error('theme: unknown preset: ' + name)
+      ctx.exitCode = 1
+      return
+    }
+    try {
+      await persistThemeLine(ctx, norm)
+    } catch (e) {
+      ctx.console.error('theme: ' + ((e && e.message) || e))
+      ctx.exitCode = 2
+      return
+    }
+    env.BARE_OS_THEME = norm
+    if (typeof ctx.bareOsApplyTheme === 'function') {
+      await ctx.bareOsApplyTheme()
+    }
+    return
+  }
+
+  ctx.console.error(
+    'theme: usage: theme [list|current|set <name>|apply]'
+  )
+  ctx.exitCode = 1
+}