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authorFlorian Dold <florian.dold@gmail.com>2017-05-03 15:35:00 +0200
committerFlorian Dold <florian.dold@gmail.com>2017-05-03 15:35:00 +0200
commitde98e0b232509d5f40c135d540a70e415272ff85 (patch)
treea79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/stream-browserify/index.js
parente0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff)
downloadwallet-core-de98e0b232509d5f40c135d540a70e415272ff85.tar.xz
node_modules
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diff --git a/node_modules/stream-browserify/index.js b/node_modules/stream-browserify/index.js
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+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+module.exports = Stream;
+
+var EE = require('events').EventEmitter;
+var inherits = require('inherits');
+
+inherits(Stream, EE);
+Stream.Readable = require('readable-stream/readable.js');
+Stream.Writable = require('readable-stream/writable.js');
+Stream.Duplex = require('readable-stream/duplex.js');
+Stream.Transform = require('readable-stream/transform.js');
+Stream.PassThrough = require('readable-stream/passthrough.js');
+
+// Backwards-compat with node 0.4.x
+Stream.Stream = Stream;
+
+
+
+// old-style streams. Note that the pipe method (the only relevant
+// part of this class) is overridden in the Readable class.
+
+function Stream() {
+ EE.call(this);
+}
+
+Stream.prototype.pipe = function(dest, options) {
+ var source = this;
+
+ function ondata(chunk) {
+ if (dest.writable) {
+ if (false === dest.write(chunk) && source.pause) {
+ source.pause();
+ }
+ }
+ }
+
+ source.on('data', ondata);
+
+ function ondrain() {
+ if (source.readable && source.resume) {
+ source.resume();
+ }
+ }
+
+ dest.on('drain', ondrain);
+
+ // If the 'end' option is not supplied, dest.end() will be called when
+ // source gets the 'end' or 'close' events. Only dest.end() once.
+ if (!dest._isStdio && (!options || options.end !== false)) {
+ source.on('end', onend);
+ source.on('close', onclose);
+ }
+
+ var didOnEnd = false;
+ function onend() {
+ if (didOnEnd) return;
+ didOnEnd = true;
+
+ dest.end();
+ }
+
+
+ function onclose() {
+ if (didOnEnd) return;
+ didOnEnd = true;
+
+ if (typeof dest.destroy === 'function') dest.destroy();
+ }
+
+ // don't leave dangling pipes when there are errors.
+ function onerror(er) {
+ cleanup();
+ if (EE.listenerCount(this, 'error') === 0) {
+ throw er; // Unhandled stream error in pipe.
+ }
+ }
+
+ source.on('error', onerror);
+ dest.on('error', onerror);
+
+ // remove all the event listeners that were added.
+ function cleanup() {
+ source.removeListener('data', ondata);
+ dest.removeListener('drain', ondrain);
+
+ source.removeListener('end', onend);
+ source.removeListener('close', onclose);
+
+ source.removeListener('error', onerror);
+ dest.removeListener('error', onerror);
+
+ source.removeListener('end', cleanup);
+ source.removeListener('close', cleanup);
+
+ dest.removeListener('close', cleanup);
+ }
+
+ source.on('end', cleanup);
+ source.on('close', cleanup);
+
+ dest.on('close', cleanup);
+
+ dest.emit('pipe', source);
+
+ // Allow for unix-like usage: A.pipe(B).pipe(C)
+ return dest;
+};