updates

kernel/bin/nl

@@ -0,0 +1,33 @@
+/** Shared helpers for drive-resident /bin scripts (prepended before each command). */
+function bareStdin(ctx) {
+  return typeof ctx.shellStdin === 'string' ? ctx.shellStdin : ''
+}
+
+async function run(ctx, argv) {
+  const vfs = ctx.vfs
+  const files = argv.slice(1).filter((a) => !a.startsWith('-'))
+  let body = ''
+  if (!files.length) {
+    body = bareStdin(ctx)
+    if (body === '') return
+  } else {
+    for (const f of files) {
+      const buf = await vfs.readFile(f)
+      if (!buf) {
+        ctx.console.error('nl: ' + f + ': No such file')
+        ctx.exitCode = 1
+        continue
+      }
+      body += ctx.b4a.toString(buf)
+    }
+  }
+  const lines = body.split('\n')
+  if (lines.length && lines[lines.length - 1] === '') lines.pop()
+  let n = 1
+  for (const line of lines) {
+    const num = String(n)
+    const pad = ' '.repeat(Math.max(0, 6 - num.length)) + num
+    ctx.console.log(pad + '\t' + line)
+    n++
+  }
+}