first commit

node_modules/vinyl-fs/lib/dest/write-contents/write-stream.js

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