Class: FileUtils::Entry_

Inherits:
Object
  • Object
show all
Includes:
StreamUtils_
Defined in:
lib/fileutils.rb

Overview

:nodoc: internal use only

Constant Summary collapse

S_IF_DOOR =
0xD000

Instance Method Summary collapse

Constructor Details

#initialize(a, b = nil, deref = false) ⇒ Entry_

Returns a new instance of Entry_.



1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
# File 'lib/fileutils.rb', line 1263

def initialize(a, b = nil, deref = false)
  @prefix = @rel = @path = nil
  if b
    @prefix = a
    @rel = b
  else
    @path = a
  end
  @deref = deref
  @stat = nil
  @lstat = nil
end

Instance Method Details

#blockdev?Boolean

Returns:

  • (Boolean)


1324
1325
1326
1327
# File 'lib/fileutils.rb', line 1324

def blockdev?
  s = lstat!
  s and s.blockdev?
end

#chardev?Boolean

Returns:

  • (Boolean)


1319
1320
1321
1322
# File 'lib/fileutils.rb', line 1319

def chardev?
  s = lstat!
  s and s.chardev?
end

#chmod(mode) ⇒ Object



1390
1391
1392
1393
1394
1395
1396
# File 'lib/fileutils.rb', line 1390

def chmod(mode)
  if symlink?
    File.lchmod mode, path() if have_lchmod?
  else
    File.chmod mode, path()
  end
end

#chown(uid, gid) ⇒ Object



1398
1399
1400
1401
1402
1403
1404
# File 'lib/fileutils.rb', line 1398

def chown(uid, gid)
  if symlink?
    File.lchown uid, gid, path() if have_lchown?
  else
    File.chown uid, gid, path()
  end
end

#copy(dest) ⇒ Object



1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
# File 'lib/fileutils.rb', line 1406

def copy(dest)
  case
  when file?
    copy_file dest
  when directory?
    if !File.exist?(dest) and descendant_diretory?(dest, path)
      raise ArgumentError, "cannot copy directory %s to itself %s" % [path, dest]
    end
    begin
      Dir.mkdir dest
    rescue
      raise unless File.directory?(dest)
    end
  when symlink?
    File.symlink File.readlink(path()), dest
  when chardev?
    raise "cannot handle device file" unless File.respond_to?(:mknod)
    mknod dest, ?c, 0666, lstat().rdev
  when blockdev?
    raise "cannot handle device file" unless File.respond_to?(:mknod)
    mknod dest, ?b, 0666, lstat().rdev
  when socket?
    raise "cannot handle socket" unless File.respond_to?(:mknod)
    mknod dest, nil, lstat().mode, 0
  when pipe?
    raise "cannot handle FIFO" unless File.respond_to?(:mkfifo)
    mkfifo dest, 0666
  when door?
    raise "cannot handle door: #{path()}"
  else
    raise "unknown file type: #{path()}"
  end
end

#copy_file(dest) ⇒ Object



1440
1441
1442
1443
1444
1445
1446
# File 'lib/fileutils.rb', line 1440

def copy_file(dest)
  File.open(path()) do |s|
    File.open(dest, 'wb', s.stat.mode) do |f|
      IO.copy_stream(s, f)
    end
  end
end

#copy_metadata(path) ⇒ Object



1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
# File 'lib/fileutils.rb', line 1448

def (path)
  st = lstat()
  if !st.symlink?
    File.utime st.atime, st.mtime, path
  end
  begin
    if st.symlink?
      begin
        File.lchown st.uid, st.gid, path
      rescue NotImplementedError
      end
    else
      File.chown st.uid, st.gid, path
    end
  rescue Errno::EPERM
    # clear setuid/setgid
    if st.symlink?
      begin
        File.lchmod st.mode & 01777, path
      rescue NotImplementedError
      end
    else
      File.chmod st.mode & 01777, path
    end
  else
    if st.symlink?
      begin
        File.lchmod st.mode, path
      rescue NotImplementedError
      end
    else
      File.chmod st.mode, path
    end
  end
end

#dereference?Boolean

Returns:

  • (Boolean)


1296
1297
1298
# File 'lib/fileutils.rb', line 1296

def dereference?
  @deref
end

#directory?Boolean

Returns:

  • (Boolean)


1309
1310
1311
1312
# File 'lib/fileutils.rb', line 1309

def directory?
  s = lstat!
  s and s.directory?
end

#door?Boolean

Returns:

  • (Boolean)


1341
1342
1343
1344
# File 'lib/fileutils.rb', line 1341

def door?
  s = lstat!
  s and (s.mode & 0xF000 == S_IF_DOOR)
end

#entriesObject



1346
1347
1348
1349
1350
1351
1352
# File 'lib/fileutils.rb', line 1346

def entries
  opts = {}
  opts[:encoding] = ::Encoding::UTF_8 if fu_windows?
  Dir.entries(path(), opts)\
      .reject {|n| n == '.' or n == '..' }\
      .map {|n| Entry_.new(prefix(), join(rel(), n.untaint)) }
end

#exist?Boolean

Returns:

  • (Boolean)


1300
1301
1302
# File 'lib/fileutils.rb', line 1300

def exist?
  lstat! ? true : false
end

#file?Boolean

Returns:

  • (Boolean)


1304
1305
1306
1307
# File 'lib/fileutils.rb', line 1304

def file?
  s = lstat!
  s and s.file?
end

#inspectObject



1276
1277
1278
# File 'lib/fileutils.rb', line 1276

def inspect
  "\#<#{self.class} #{path()}>"
end

#lstatObject



1376
1377
1378
1379
1380
1381
1382
# File 'lib/fileutils.rb', line 1376

def lstat
  if dereference?
    @lstat ||= File.stat(path())
  else
    @lstat ||= File.lstat(path())
  end
end

#lstat!Object



1384
1385
1386
1387
1388
# File 'lib/fileutils.rb', line 1384

def lstat!
  lstat()
rescue SystemCallError
  nil
end

#pathObject



1280
1281
1282
1283
1284
1285
1286
# File 'lib/fileutils.rb', line 1280

def path
  if @path
    File.path(@path)
  else
    join(@prefix, @rel)
  end
end

#pipe?Boolean

Returns:

  • (Boolean)


1334
1335
1336
1337
# File 'lib/fileutils.rb', line 1334

def pipe?
  s = lstat!
  s and s.pipe?
end

#platform_supportObject



1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
# File 'lib/fileutils.rb', line 1504

def platform_support
  return yield unless fu_windows?
  first_time_p = true
  begin
    yield
  rescue Errno::ENOENT
    raise
  rescue => err
    if first_time_p
      first_time_p = false
      begin
        File.chmod 0700, path()   # Windows does not have symlink
        retry
      rescue SystemCallError
      end
    end
    raise err
  end
end

#postorder_traverse {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
# File 'lib/fileutils.rb', line 1534

def postorder_traverse
  if directory?
    entries().each do |ent|
      ent.postorder_traverse do |e|
        yield e
      end
    end
  end
  yield self
end

#prefixObject



1288
1289
1290
# File 'lib/fileutils.rb', line 1288

def prefix
  @prefix || @path
end

#preorder_traverseObject Also known as: traverse



1524
1525
1526
1527
1528
1529
1530
# File 'lib/fileutils.rb', line 1524

def preorder_traverse
  stack = [self]
  while ent = stack.pop
    yield ent
    stack.concat ent.entries.reverse if ent.directory?
  end
end

#relObject



1292
1293
1294
# File 'lib/fileutils.rb', line 1292

def rel
  @rel
end

#removeObject



1484
1485
1486
1487
1488
1489
1490
# File 'lib/fileutils.rb', line 1484

def remove
  if directory?
    remove_dir1
  else
    remove_file
  end
end

#remove_dir1Object



1492
1493
1494
1495
1496
# File 'lib/fileutils.rb', line 1492

def remove_dir1
  platform_support {
    Dir.rmdir path().chomp(?/)
  }
end

#remove_fileObject



1498
1499
1500
1501
1502
# File 'lib/fileutils.rb', line 1498

def remove_file
  platform_support {
    File.unlink path
  }
end

#socket?Boolean

Returns:

  • (Boolean)


1329
1330
1331
1332
# File 'lib/fileutils.rb', line 1329

def socket?
  s = lstat!
  s and s.socket?
end

#statObject



1354
1355
1356
1357
1358
1359
1360
1361
1362
# File 'lib/fileutils.rb', line 1354

def stat
  return @stat if @stat
  if lstat() and lstat().symlink?
    @stat = File.stat(path())
  else
    @stat = lstat()
  end
  @stat
end

#stat!Object



1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
# File 'lib/fileutils.rb', line 1364

def stat!
  return @stat if @stat
  if lstat! and lstat!.symlink?
    @stat = File.stat(path())
  else
    @stat = lstat!
  end
  @stat
rescue SystemCallError
  nil
end

#symlink?Boolean

Returns:

  • (Boolean)


1314
1315
1316
1317
# File 'lib/fileutils.rb', line 1314

def symlink?
  s = lstat!
  s and s.symlink?
end

#wrap_traverse(pre, post) ⇒ Object



1545
1546
1547
1548
1549
1550
1551
1552
1553
# File 'lib/fileutils.rb', line 1545

def wrap_traverse(pre, post)
  pre.call self
  if directory?
    entries.each do |ent|
      ent.wrap_traverse pre, post
    end
  end
  post.call self
end