fs: use proper .destroy() implementation for SyncWriteStream
PR-URL: https://github.com/nodejs/node/pull/26690 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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@ -4,15 +4,13 @@ const { Writable } = require('stream');
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const { closeSync, writeSync } = require('fs');
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function SyncWriteStream(fd, options) {
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Writable.call(this);
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Writable.call(this, { autoDestroy: true });
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options = options || {};
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this.fd = fd;
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this.readable = false;
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this.autoClose = options.autoClose === undefined ? true : options.autoClose;
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this.on('end', () => this._destroy());
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}
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Object.setPrototypeOf(SyncWriteStream.prototype, Writable.prototype);
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@ -24,22 +22,18 @@ SyncWriteStream.prototype._write = function(chunk, encoding, cb) {
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return true;
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};
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SyncWriteStream.prototype._destroy = function() {
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SyncWriteStream.prototype._destroy = function(err, cb) {
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if (this.fd === null) // already destroy()ed
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return;
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return cb(err);
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if (this.autoClose)
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closeSync(this.fd);
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this.fd = null;
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return true;
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cb(err);
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};
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SyncWriteStream.prototype.destroySoon =
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SyncWriteStream.prototype.destroy = function() {
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this._destroy();
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this.emit('close');
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return true;
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};
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SyncWriteStream.prototype.destroy;
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module.exports = SyncWriteStream;
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@ -19,7 +19,6 @@ const filename = path.join(tmpdir.path, 'sync-write-stream.txt');
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assert.strictEqual(stream.fd, 1);
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assert.strictEqual(stream.readable, false);
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assert.strictEqual(stream.autoClose, true);
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assert.strictEqual(stream.listenerCount('end'), 1);
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}
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// Verify constructing the instance with specified options.
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@ -29,7 +28,6 @@ const filename = path.join(tmpdir.path, 'sync-write-stream.txt');
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assert.strictEqual(stream.fd, 1);
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assert.strictEqual(stream.readable, false);
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assert.strictEqual(stream.autoClose, false);
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assert.strictEqual(stream.listenerCount('end'), 1);
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}
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// Verify that the file will be written synchronously.
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@ -47,21 +45,28 @@ const filename = path.join(tmpdir.path, 'sync-write-stream.txt');
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const fd = fs.openSync(filename, 'w');
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const stream = new SyncWriteStream(fd);
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stream.on('close', common.mustCall(3));
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assert.strictEqual(stream.destroy(), true);
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stream.on('close', common.mustCall());
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assert.strictEqual(stream.destroy(), stream);
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assert.strictEqual(stream.fd, null);
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assert.strictEqual(stream.destroy(), true);
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assert.strictEqual(stream.destroySoon(), true);
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}
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// Verify that the 'end' event listener will also destroy the stream.
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// Verify that the stream will unset the fd after destroySoon().
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{
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const fd = fs.openSync(filename, 'w');
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const stream = new SyncWriteStream(fd);
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stream.on('close', common.mustCall());
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assert.strictEqual(stream.destroySoon(), stream);
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assert.strictEqual(stream.fd, null);
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}
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// Verify that calling end() will also destroy the stream.
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{
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const fd = fs.openSync(filename, 'w');
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const stream = new SyncWriteStream(fd);
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assert.strictEqual(stream.fd, fd);
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stream.emit('end');
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stream.end();
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assert.strictEqual(stream.fd, null);
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}
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