@stdlib/esm/vendor/readable-stream.js

ES module distribution for Stdlib, a standard library for JavaScript and Node.js.

// Node.js is licensed for use as follows:
// 
// """
// Copyright Node.js contributors. All rights reserved.
// 
// 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.
// """
// 
// This license applies to parts of Node.js originating from the
// https://github.com/joyent/node repository:
// 
// """
// Copyright Joyent, Inc. and other Node contributors. All rights reserved.
// 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.
// """
// 
import Buffer from './buffer.js';
import process from './process.js';
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Writable(e);this._writableState=new WritableState(e,this),this.writable=!0,e&&("function"==typeof e.write&&(this._write=e.write),"function"==typeof e.writev&&(this._writev=e.writev),"function"==typeof e.destroy&&(this._destroy=e.destroy),"function"==typeof e.final&&(this._final=e.final)),streamBrowser.call(this)}function writeAfterEnd(e,t){var r=new Error("write after end");e.emit("error",r),processNextickArgs.nextTick(t,r)}function validChunk(e,t,r,n){var i=!0,o=!1;return null===r?o=new TypeError("May not write null values to stream"):"string"==typeof r||void 0===r||t.objectMode||(o=new TypeError("Invalid non-string/buffer chunk")),o&&(e.emit("error",o),processNextickArgs.nextTick(n,o),i=!1),i}function decodeChunk(e,t,r){return e.objectMode||!1===e.decodeStrings||"string"!=typeof t||(t=Buffer$1.from(t,r)),t}function writeOrBuffer(e,t,r,n,i,o){if(!r){var s=decodeChunk(t,n,i);n!==s&&(r=!0,i="buffer",n=s)}var a=t.objectMode?1:n.length;t.length+=a;var u=t.length<t.highWaterMark;if(u||(t.needDrain=!0),t.writing||t.corked){var f=t.lastBufferedRequest;t.lastBufferedRequest={chunk:n,encoding:i,isBuf:r,callback:o,next:null},f?f.next=t.lastBufferedRequest:t.bufferedRequest=t.lastBufferedRequest,t.bufferedRequestCount+=1}else doWrite(e,t,!1,a,n,i,o);return u}function doWrite(e,t,r,n,i,o,s){t.writelen=n,t.writecb=s,t.writing=!0,t.sync=!0,r?e._writev(i,t.onwrite):e._write(i,o,t.onwrite),t.sync=!1}function onwriteError(e,t,r,n,i){--t.pendingcb,r?(processNextickArgs.nextTick(i,n),processNextickArgs.nextTick(finishMaybe,e,t),e._writableState.errorEmitted=!0,e.emit("error",n)):(i(n),e._writableState.errorEmitted=!0,e.emit("error",n),finishMaybe(e,t))}function onwriteStateUpdate(e){e.writing=!1,e.writecb=null,e.length-=e.writelen,e.writelen=0}function onwrite(e,t){var r=e._writableState,n=r.sync,i=r.writecb;if(onwriteStateUpdate(r),t)onwriteError(e,r,n,t,i);else{var o=needFinish(r);o||r.corked||r.bufferProcessing||!r.bufferedRequest||clearBuffer(e,r),n?asyncWrite(afterWrite,e,r,o,i):afterWrite(e,r,o,i)}}function afterWrite(e,t,r,n){r||onwriteDrain(e,t),t.pendingcb--,n(),finishMaybe(e,t)}function onwriteDrain(e,t){0===t.length&&t.needDrain&&(t.needDrain=!1,e.emit("drain"))}function clearBuffer(e,t){t.bufferProcessing=!0;var r=t.bufferedRequest;if(e._writev&&r&&r.next){var n=t.bufferedRequestCount,i=new Array(n),o=t.corkedRequestsFree;o.entry=r;for(var s=0,a=!0;r;)i[s]=r,r.isBuf||(a=!1),r=r.next,s+=1;i.allBuffers=a,doWrite(e,t,!0,t.length,i,"",o.finish),t.pendingcb++,t.lastBufferedRequest=null,o.next?(t.corkedRequestsFree=o.next,o.next=null):t.corkedRequestsFree=new CorkedRequest(t),t.bufferedRequestCount=0}else{for(;r;){var u=r.chunk,f=r.encoding,l=r.callback;if(doWrite(e,t,!1,t.objectMode?1:u.length,u,f,l),r=r.next,t.bufferedRequestCount--,t.writing)break}null===r&&(t.lastBufferedRequest=null)}t.bufferedRequest=r,t.bufferProcessing=!1}function needFinish(e){return e.ending&&0===e.length&&null===e.bufferedRequest&&!e.finished&&!e.writing}function callFinal(e,t){e._final((function(r){t.pendingcb--,r&&e.emit("error",r),t.prefinished=!0,e.emit("prefinish"),finishMaybe(e,t)}))}function prefinish(e,t){t.prefinished||t.finalCalled||("function"==typeof e._final?(t.pendingcb++,t.finalCalled=!0,processNextickArgs.nextTick(callFinal,e,t)):(t.prefinished=!0,e.emit("prefinish")))}function finishMaybe(e,t){var r=needFinish(t);return r&&(prefinish(e,t),0===t.pendingcb&&(t.finished=!0,e.emit("finish"))),r}function endWritable(e,t,r){t.ending=!0,finishMaybe(e,t),r&&(t.finished?processNextickArgs.nextTick(r):e.once("finish",r)),t.ended=!0,e.writable=!1}function onCorkedFinish(e,t,r){var n=e.entry;for(e.entry=null;n;){var i=n.callback;t.pendingcb--,i(r),n=n.next}t.corkedRequestsFree?t.corkedRequestsFree.next=e:t.corkedRequestsFree=e}util$1.inherits(Writable,streamBrowser),WritableState.prototype.getBuffer=function(){for(var e=this.bufferedRequest,t=[];e;)t.push(e),e=e.next;return t},function(){try{Object.defineProperty(WritableState.prototype,"buffer",{get:internalUtil.deprecate((function(){return this.getBuffer()}),"_writableState.buffer is deprecated. Use _writabl