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Handle partial write in FifoPosix #214

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Merged
merged 2 commits into from
Apr 22, 2025
Merged

Handle partial write in FifoPosix #214

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79953d2
Support partial write in FifoPosix
brianquinlan Apr 21, 2025
4d7f45b
Update fifo_posix.dart
brianquinlan Apr 21, 2025
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15 changes: 12 additions & 3 deletions pkgs/io_file/test/fifo_posix.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -43,13 +43,22 @@ class FifoPosix implements Fifo {
subscription.resume();
}

void write(int fd, Uint8List data) {
var offset = 0;
while (offset < data.length) {
final wrote = stdlibc.write(fd, data.buffer.asUint8List(offset));
if (wrote == -1) {
throw AssertionError('write failed: ${stdlibc.errno}');
}
offset += wrote;
}
}

subscription = receivePort.listen(
(message) => switch (message) {
Uint8List data => stdlibc.write(fd, data),

Uint8List data => write(fd, data),
Duration d => pause(d),
null => stdlibc.close(fd),

final other => throw UnsupportedError('unexpected message: $other'),
},
);
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