sky/examples/terminal/terminal_file_impl.dart - Issue 1038813005: Move terminal example from //sky/examples to //examples

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Issue 1038813005: Move terminal example from //sky/examples to //examples (Closed) Base URL: git@github.com:domokit/mojo.git@master

Patch Set: Created 5 years, 8 months ago

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1 // Copyright 2015 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.

4

5 import 'dart:async';

6 import 'dart:core';

7 import 'package:mojo/public/dart/core.dart';

8 import 'package:mojo/services/files/public/interfaces/file.mojom.dart' as files;

9 import 'package:mojo/services/files/public/interfaces/types.mojom.dart' as files ;

10

11 import 'terminal_display.dart';

12

13 // This implements a \|mojo.files.File\| that acts like a (pseudo)terminal. Bytes

14 // written to the \|File\| will be read by this implementation and passed on to

15 // the (Dart) \|TerminalDisplay\| (using \|putChar()\|). A read from the \|File\| will

16 // be completed if/when \|TerminalDisplay\| makes a byte available (via

17 // \|getChar()\|).

18 // TODO(vtl): This implementation is very incomplete.

19 class TerminalFileImpl implements files.File {

20 final files.FileStub stub;

21 final TerminalDisplay _display;

22

23 TerminalFileImpl(this._display) : stub = new files.FileStub.unbound() {

24 stub.impl = this;

25 }

26

27 // \|files.File\| implementation:

28

29 @override

30 Future close(Function responseFactory) async {

31 // TODO(vtl): We should probably do more than just say OK.

32 return responseFactory(files.Error_OK);

33 }

34

35 @override

36 Future read(int numBytesToRead, int offset, int whence,

37 Function responseFactory) async {

38 if (numBytesToRead < 0) {

39 return responseFactory(files.Error_INVALID_ARGUMENT, null);

40 }

41

42 // TODO(vtl): Error if \|offset\|/\|whence\| not appropriate.

43

44 if (numBytesToRead == 0) {

45 return responseFactory(files.Error_OK, []);

46 }

47

48 return responseFactory(files.Error_OK, [await _display.getChar()]);

49 }

50

51 @override

52 Future write(List<int> bytesToWrite, int offset, int whence,

53 Function responseFactory) async {

54 // TODO(vtl): Error if \|offset\|/\|whence\| not appropriate.

55

56 for (var c in bytesToWrite) {

57 _display.putChar(c);

58 }

59 return responseFactory(files.Error_OK, bytesToWrite.length);

60 }

61

62 @override

63 Future readToStream(MojoDataPipeProducer source, int offset, int whence,

64 int numBytesToRead, Function responseFactory) async {

65 // TODO(vtl)

66 return responseFactory(files.Error_UNIMPLEMENTED);

67 }

68

69 @override

70 Future writeFromStream(MojoDataPipeConsumer sink, int offset, int whence,

71 Function responseFactory) async {

72 // TODO(vtl)

73 return responseFactory(files.Error_UNIMPLEMENTED);

74 }

75

76 @override

77 Future tell(Function responseFactory) async {

78 // TODO(vtl)

79 return responseFactory(files.Error_UNIMPLEMENTED, 0);

80 }

81

82 @override

83 Future seek(int offset, int whence, Function responseFactory) async {

84 // TODO(vtl)

85 return responseFactory(files.Error_UNIMPLEMENTED, 0);

86 }

87

88 @override

89 Future stat(Function responseFactory) async {

90 // TODO(vtl)

91 return responseFactory(files.Error_UNIMPLEMENTED, null);

92 }

93

94 @override

95 Future truncate(int size, Function responseFactory) async {

96 // TODO(vtl)

97 return responseFactory(files.Error_UNIMPLEMENTED);

98 }

99

100 @override

101 Future touch(files.TimespecOrNow atime, files.TimespecOrNow mtime,

102 Function responseFactory) async {

103 // TODO(vtl)

104 return responseFactory(files.Error_UNIMPLEMENTED);

105 }

106

107 @override

108 Future dup(Object file, Function responseFactory) async {

109 // TODO(vtl)

110 return responseFactory(files.Error_UNIMPLEMENTED);

111 }

112

113 @override

114 Future reopen(Object file, int openFlags, Function responseFactory) async {

115 // TODO(vtl)

116 return responseFactory(files.Error_UNIMPLEMENTED);

117 }

118

119 @override

120 Future asBuffer(Function responseFactory) async {

121 // TODO(vtl)

122 return responseFactory(files.Error_UNIMPLEMENTED, null);

123 }

124 }

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