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_.



1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
# File 'lib/fileutils.rb', line 1208

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)


1274
1275
1276
1277
# File 'lib/fileutils.rb', line 1274

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

#chardev?Boolean

Returns:

  • (Boolean)


1269
1270
1271
1272
# File 'lib/fileutils.rb', line 1269

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

#chmod(mode) ⇒ Object



1340
1341
1342
1343
1344
1345
1346
# File 'lib/fileutils.rb', line 1340

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

#chown(uid, gid) ⇒ Object



1348
1349
1350
1351
1352
1353
1354
# File 'lib/fileutils.rb', line 1348

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



1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
# File 'lib/fileutils.rb', line 1356

def copy(dest)
  case
  when file?
    copy_file dest
  when directory?
    if !File.exist?(dest) and descendant_directory?(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



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

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



1398
1399
1400
1401
1402
1403
1404
1405
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
# File 'lib/fileutils.rb', line 1398

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)


1241
1242
1243
# File 'lib/fileutils.rb', line 1241

def dereference?
  @deref
end

#directory?Boolean

Returns:

  • (Boolean)


1259
1260
1261
1262
# File 'lib/fileutils.rb', line 1259

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

#door?Boolean

Returns:

  • (Boolean)


1291
1292
1293
1294
# File 'lib/fileutils.rb', line 1291

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

#entriesObject



1296
1297
1298
1299
1300
1301
1302
# File 'lib/fileutils.rb', line 1296

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)


1245
1246
1247
1248
1249
1250
1251
1252
# File 'lib/fileutils.rb', line 1245

def exist?
  begin
    lstat
    true
  rescue Errno::ENOENT
    false
  end
end

#file?Boolean

Returns:

  • (Boolean)


1254
1255
1256
1257
# File 'lib/fileutils.rb', line 1254

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

#inspectObject



1221
1222
1223
# File 'lib/fileutils.rb', line 1221

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

#lstatObject



1326
1327
1328
1329
1330
1331
1332
# File 'lib/fileutils.rb', line 1326

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

#lstat!Object



1334
1335
1336
1337
1338
# File 'lib/fileutils.rb', line 1334

def lstat!
  lstat()
rescue SystemCallError
  nil
end

#pathObject



1225
1226
1227
1228
1229
1230
1231
# File 'lib/fileutils.rb', line 1225

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

#pipe?Boolean

Returns:

  • (Boolean)


1284
1285
1286
1287
# File 'lib/fileutils.rb', line 1284

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

#platform_supportObject



1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
# File 'lib/fileutils.rb', line 1454

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_traverseObject



1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
# File 'lib/fileutils.rb', line 1484

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

#prefixObject



1233
1234
1235
# File 'lib/fileutils.rb', line 1233

def prefix
  @prefix || @path
end

#preorder_traverseObject Also known as: traverse



1474
1475
1476
1477
1478
1479
1480
# File 'lib/fileutils.rb', line 1474

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

#relObject



1237
1238
1239
# File 'lib/fileutils.rb', line 1237

def rel
  @rel
end

#removeObject



1434
1435
1436
1437
1438
1439
1440
# File 'lib/fileutils.rb', line 1434

def remove
  if directory?
    remove_dir1
  else
    remove_file
  end
end

#remove_dir1Object



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

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

#remove_fileObject



1448
1449
1450
1451
1452
# File 'lib/fileutils.rb', line 1448

def remove_file
  platform_support {
    File.unlink path
  }
end

#socket?Boolean

Returns:

  • (Boolean)


1279
1280
1281
1282
# File 'lib/fileutils.rb', line 1279

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

#statObject



1304
1305
1306
1307
1308
1309
1310
1311
1312
# File 'lib/fileutils.rb', line 1304

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

#stat!Object



1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
# File 'lib/fileutils.rb', line 1314

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)


1264
1265
1266
1267
# File 'lib/fileutils.rb', line 1264

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

#wrap_traverse(pre, post) ⇒ Object



1496
1497
1498
1499
1500
1501
1502
1503
1504
# File 'lib/fileutils.rb', line 1496

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