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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
import { __awaiter } from "tslib";
import { Duplex } from 'stream';
import { AsyncByteStream } from '../../io/stream.mjs';
/** @ignore */
export function recordBatchWriterThroughNodeStream(options) {
return new RecordBatchWriterDuplex(new this(options));
}
/** @ignore */
class RecordBatchWriterDuplex extends Duplex {
constructor(writer, options) {
super(Object.assign(Object.assign({ allowHalfOpen: false }, options), { writableObjectMode: true, readableObjectMode: false }));
this._pulling = false;
this._writer = writer;
this._reader = new AsyncByteStream(writer);
}
_final(cb) {
const writer = this._writer;
writer === null || writer === void 0 ? void 0 : writer.close();
cb && cb();
}
_write(x, _, cb) {
const writer = this._writer;
writer === null || writer === void 0 ? void 0 : writer.write(x);
cb && cb();
return true;
}
_read(size) {
const it = this._reader;
if (it && !this._pulling && (this._pulling = true)) {
(() => __awaiter(this, void 0, void 0, function* () { return this._pulling = yield this._pull(size, it); }))();
}
}
_destroy(err, cb) {
const writer = this._writer;
if (writer) {
err ? writer.abort(err) : writer.close();
}
cb(this._reader = this._writer = null);
}
_pull(size, reader) {
return __awaiter(this, void 0, void 0, function* () {
let r = null;
while (this.readable && !(r = yield reader.next(size || null)).done) {
if (size != null && r.value) {
size -= r.value.byteLength;
}
if (!this.push(r.value) || size <= 0) {
break;
}
}
if (((r === null || r === void 0 ? void 0 : r.done) || !this.readable)) {
this.push(null);
yield reader.cancel();
}
return !this.readable;
});
}
}
//# sourceMappingURL=writer.mjs.map
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