first commit

build/node_modules/vinyl-fs/lib/dest/writeContents/writeStream.js

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+'use strict';
+
+var fs = require('graceful-fs');
+
+var fo = require('../../fileOperations');
+var streamFile = require('../../src/getContents/streamFile');
+
+function writeStream(writePath, file, written) {
+  var opt = {
+    mode: file.stat.mode,
+    flag: file.flag,
+  };
+
+  var outStream = fs.createWriteStream(writePath, opt);
+
+  file.contents.once('error', complete);
+  file.contents.once('end', readStreamEnd);
+  outStream.once('error', complete);
+  outStream.once('finish', complete);
+
+  // Streams are piped with end disabled, this prevents the
+  // WriteStream from closing the file descriptor after all
+  // data is written.
+  file.contents.pipe(outStream, { end: false });
+
+  function readStreamEnd() {
+    streamFile(file, complete);
+  }
+
+  function end(propagatedErr) {
+    outStream.end(onEnd);
+
+    function onEnd(endErr) {
+      written(propagatedErr || endErr);
+    }
+  }
+
+  // Cleanup
+  function complete(streamErr) {
+    file.contents.removeListener('error', complete);
+    file.contents.removeListener('end', readStreamEnd);
+    outStream.removeListener('error', complete);
+    outStream.removeListener('finish', complete);
+
+    if (streamErr) {
+      return end(streamErr);
+    }
+
+    if (typeof outStream.fd !== 'number') {
+      return end();
+    }
+
+    fo.updateMetadata(outStream.fd, file, end);
+  }
+}
+
+module.exports = writeStream;