Demo for query storing
Change-Id: I947bcac841992c3f6cfd01ab337c265b0d01cb70
diff --git a/node_modules/end-of-stream/index.js b/node_modules/end-of-stream/index.js
new file mode 100644
index 0000000..c77f0d5
--- /dev/null
+++ b/node_modules/end-of-stream/index.js
@@ -0,0 +1,94 @@
+var once = require('once');
+
+var noop = function() {};
+
+var isRequest = function(stream) {
+ return stream.setHeader && typeof stream.abort === 'function';
+};
+
+var isChildProcess = function(stream) {
+ return stream.stdio && Array.isArray(stream.stdio) && stream.stdio.length === 3
+};
+
+var eos = function(stream, opts, callback) {
+ if (typeof opts === 'function') return eos(stream, null, opts);
+ if (!opts) opts = {};
+
+ callback = once(callback || noop);
+
+ var ws = stream._writableState;
+ var rs = stream._readableState;
+ var readable = opts.readable || (opts.readable !== false && stream.readable);
+ var writable = opts.writable || (opts.writable !== false && stream.writable);
+ var cancelled = false;
+
+ var onlegacyfinish = function() {
+ if (!stream.writable) onfinish();
+ };
+
+ var onfinish = function() {
+ writable = false;
+ if (!readable) callback.call(stream);
+ };
+
+ var onend = function() {
+ readable = false;
+ if (!writable) callback.call(stream);
+ };
+
+ var onexit = function(exitCode) {
+ callback.call(stream, exitCode ? new Error('exited with error code: ' + exitCode) : null);
+ };
+
+ var onerror = function(err) {
+ callback.call(stream, err);
+ };
+
+ var onclose = function() {
+ process.nextTick(onclosenexttick);
+ };
+
+ var onclosenexttick = function() {
+ if (cancelled) return;
+ if (readable && !(rs && (rs.ended && !rs.destroyed))) return callback.call(stream, new Error('premature close'));
+ if (writable && !(ws && (ws.ended && !ws.destroyed))) return callback.call(stream, new Error('premature close'));
+ };
+
+ var onrequest = function() {
+ stream.req.on('finish', onfinish);
+ };
+
+ if (isRequest(stream)) {
+ stream.on('complete', onfinish);
+ stream.on('abort', onclose);
+ if (stream.req) onrequest();
+ else stream.on('request', onrequest);
+ } else if (writable && !ws) { // legacy streams
+ stream.on('end', onlegacyfinish);
+ stream.on('close', onlegacyfinish);
+ }
+
+ if (isChildProcess(stream)) stream.on('exit', onexit);
+
+ stream.on('end', onend);
+ stream.on('finish', onfinish);
+ if (opts.error !== false) stream.on('error', onerror);
+ stream.on('close', onclose);
+
+ return function() {
+ cancelled = true;
+ stream.removeListener('complete', onfinish);
+ stream.removeListener('abort', onclose);
+ stream.removeListener('request', onrequest);
+ if (stream.req) stream.req.removeListener('finish', onfinish);
+ stream.removeListener('end', onlegacyfinish);
+ stream.removeListener('close', onlegacyfinish);
+ stream.removeListener('finish', onfinish);
+ stream.removeListener('exit', onexit);
+ stream.removeListener('end', onend);
+ stream.removeListener('error', onerror);
+ stream.removeListener('close', onclose);
+ };
+};
+
+module.exports = eos;