FileSink class final
A DataSink that streams written chunks to a file on disk. Native platforms only.
Each chunk is appended as it arrives, so memory stays constant — the output never accumulates in RAM. Open it, pass it to an operation, then close it to flush and release the handle.
import 'package:pdf_manipulator/io.dart';
final out = await FileSink.create(File('/path/to/out.pdf'));
try {
await pdf.merge([a, b], out);
} finally {
await out.close();
}
Web has no filesystem; this class is exported from
package:pdf_manipulator/io.dart (not the main library) so web builds
never pull in dart:io.
- Implemented types
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
close(
) → Future< void> -
Flushes pending writes and releases the file handle. Idempotent: safe
to call more than once (e.g. from a
finallyplus an error path); the second and later calls are no-ops. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
write(
Uint8List chunk) → Future< void> -
Write a chunk. Called sequentially, never concurrently.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited