1 // Ported from https://github.com/mafintosh/end-of-stream with
2 // permission from the author, Mathias Buus (@mafintosh).
5 var ERR_STREAM_PREMATURE_CLOSE = require('../../../errors').codes.ERR_STREAM_PREMATURE_CLOSE;
7 function once(callback) {
13 for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
14 args[_key] = arguments[_key];
17 callback.apply(this, args);
23 function isRequest(stream) {
24 return stream.setHeader && typeof stream.abort === 'function';
27 function eos(stream, opts, callback) {
28 if (typeof opts === 'function') return eos(stream, null, opts);
30 callback = once(callback || noop);
31 var readable = opts.readable || opts.readable !== false && stream.readable;
32 var writable = opts.writable || opts.writable !== false && stream.writable;
34 var onlegacyfinish = function onlegacyfinish() {
35 if (!stream.writable) onfinish();
38 var writableEnded = stream._writableState && stream._writableState.finished;
40 var onfinish = function onfinish() {
43 if (!readable) callback.call(stream);
46 var readableEnded = stream._readableState && stream._readableState.endEmitted;
48 var onend = function onend() {
51 if (!writable) callback.call(stream);
54 var onerror = function onerror(err) {
55 callback.call(stream, err);
58 var onclose = function onclose() {
61 if (readable && !readableEnded) {
62 if (!stream._readableState || !stream._readableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
63 return callback.call(stream, err);
66 if (writable && !writableEnded) {
67 if (!stream._writableState || !stream._writableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
68 return callback.call(stream, err);
72 var onrequest = function onrequest() {
73 stream.req.on('finish', onfinish);
76 if (isRequest(stream)) {
77 stream.on('complete', onfinish);
78 stream.on('abort', onclose);
79 if (stream.req) onrequest();else stream.on('request', onrequest);
80 } else if (writable && !stream._writableState) {
82 stream.on('end', onlegacyfinish);
83 stream.on('close', onlegacyfinish);
86 stream.on('end', onend);
87 stream.on('finish', onfinish);
88 if (opts.error !== false) stream.on('error', onerror);
89 stream.on('close', onclose);
91 stream.removeListener('complete', onfinish);
92 stream.removeListener('abort', onclose);
93 stream.removeListener('request', onrequest);
94 if (stream.req) stream.req.removeListener('finish', onfinish);
95 stream.removeListener('end', onlegacyfinish);
96 stream.removeListener('close', onlegacyfinish);
97 stream.removeListener('finish', onfinish);
98 stream.removeListener('end', onend);
99 stream.removeListener('error', onerror);
100 stream.removeListener('close', onclose);
104 module.exports = eos;