63 lines
1.6 KiB
JavaScript
63 lines
1.6 KiB
JavaScript
'use strict';
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var fo = require('../../file-operations');
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var readStream = require('../../src/read-contents/read-stream');
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function writeStream(file, optResolver, onWritten) {
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var flags = fo.getFlags({
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overwrite: optResolver.resolve('overwrite', file),
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append: optResolver.resolve('append', file),
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});
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var opt = {
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mode: file.stat.mode,
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// TODO: need to test this
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flags: flags,
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};
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// TODO: is this the best API?
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var outStream = fo.createWriteStream(file.path, opt, onFlush);
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file.contents.once('error', onComplete);
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outStream.once('error', onComplete);
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outStream.once('finish', onComplete);
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// TODO: should this use a clone?
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file.contents.pipe(outStream);
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function onComplete(streamErr) {
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// Cleanup event handlers before closing
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file.contents.removeListener('error', onComplete);
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outStream.removeListener('error', onComplete);
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outStream.removeListener('finish', onComplete);
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// Need to guarantee the fd is closed before forwarding the error
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outStream.once('close', onClose);
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outStream.end();
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function onClose(closeErr) {
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onWritten(streamErr || closeErr);
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}
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}
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// Cleanup
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function onFlush(fd, callback) {
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// TODO: removing this before readStream because it replaces the stream
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file.contents.removeListener('error', onComplete);
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// TODO: this is doing sync stuff & the callback seems unnecessary
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// TODO: Replace the contents stream or use a clone?
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readStream(file, complete);
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function complete() {
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if (typeof fd !== 'number') {
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return callback();
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}
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fo.updateMetadata(fd, file, callback);
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}
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}
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}
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module.exports = writeStream;
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