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Add Target.onwrite callback

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This commit is contained in:
Vanilagy
2025-09-02 17:34:09 +02:00
parent 55dd8cdb4c
commit 9d47b3c5dc
4 changed files with 32 additions and 5 deletions
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src/writer.ts
+10 -2
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@@ -6,7 +6,7 @@
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
import { BufferTarget, StreamTarget, StreamTargetChunk } from './target';
import { BufferTarget, NullTarget, StreamTarget, StreamTargetChunk } from './target';
import { assert } from './misc';
export abstract class Writer {
@@ -156,8 +156,9 @@ export class BufferTargetWriter extends Writer {
this.ensureSize(this.pos + data.byteLength);
this.bytes.set(data, this.pos);
this.pos += data.byteLength;
this.target.onwrite?.(this.pos, this.pos + data.byteLength);
this.pos += data.byteLength;
this.maxPos = Math.max(this.maxPos, this.pos);
}
@@ -250,6 +251,8 @@ export class StreamTargetWriter extends Writer {
data: data.slice(),
start: this.pos,
});
this.target.onwrite?.(this.pos, this.pos + data.byteLength);
this.pos += data.byteLength;
this.lastWriteEnd = Math.max(this.lastWriteEnd, this.pos);
@@ -463,8 +466,13 @@ export class StreamTargetWriter extends Writer {
export class NullTargetWriter extends Writer {
private pos = 0;
constructor(private target: NullTarget) {
super();
}
write(data: Uint8Array) {
this.maybeTrackWrites(data);
this.target.onwrite?.(this.pos, this.pos + data.byteLength);
this.pos += data.byteLength;
}