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authorRebecca Turner <me@re-becca.org>2018-04-20 18:26:37 -0700
committerRebecca Turner <me@re-becca.org>2018-05-24 23:24:45 -0700
commit468ab4519e1b92473acefb22801497a1af6aebae (patch)
treebdac1d062cd4b094bde3a21147bab5d82c792ece /deps/npm/node_modules/byline/lib/byline.js
parentac8226115e2192a7a46ba07789fa5136f74223e1 (diff)
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deps: upgrade npm to 6.1.0
PR-URL: https://github.com/nodejs/node/pull/20190 Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Michaƫl Zasso <targos@protonmail.com>
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+// Copyright (C) 2011-2015 John Hewson
+//
+// 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.
+
+var stream = require('stream'),
+ util = require('util'),
+ timers = require('timers');
+
+// convinience API
+module.exports = function(readStream, options) {
+ return module.exports.createStream(readStream, options);
+};
+
+// basic API
+module.exports.createStream = function(readStream, options) {
+ if (readStream) {
+ return createLineStream(readStream, options);
+ } else {
+ return new LineStream(options);
+ }
+};
+
+// deprecated API
+module.exports.createLineStream = function(readStream) {
+ console.log('WARNING: byline#createLineStream is deprecated and will be removed soon');
+ return createLineStream(readStream);
+};
+
+function createLineStream(readStream, options) {
+ if (!readStream) {
+ throw new Error('expected readStream');
+ }
+ if (!readStream.readable) {
+ throw new Error('readStream must be readable');
+ }
+ var ls = new LineStream(options);
+ readStream.pipe(ls);
+ return ls;
+}
+
+//
+// using the new node v0.10 "streams2" API
+//
+
+module.exports.LineStream = LineStream;
+
+function LineStream(options) {
+ stream.Transform.call(this, options);
+ options = options || {};
+
+ // use objectMode to stop the output from being buffered
+ // which re-concatanates the lines, just without newlines.
+ this._readableState.objectMode = true;
+ this._lineBuffer = [];
+ this._keepEmptyLines = options.keepEmptyLines || false;
+ this._lastChunkEndedWithCR = false;
+
+ // take the source's encoding if we don't have one
+ var self = this;
+ this.on('pipe', function(src) {
+ if (!self.encoding) {
+ // but we can't do this for old-style streams
+ if (src instanceof stream.Readable) {
+ self.encoding = src._readableState.encoding;
+ }
+ }
+ });
+}
+util.inherits(LineStream, stream.Transform);
+
+LineStream.prototype._transform = function(chunk, encoding, done) {
+ // decode binary chunks as UTF-8
+ encoding = encoding || 'utf8';
+
+ if (Buffer.isBuffer(chunk)) {
+ if (encoding == 'buffer') {
+ chunk = chunk.toString(); // utf8
+ encoding = 'utf8';
+ }
+ else {
+ chunk = chunk.toString(encoding);
+ }
+ }
+ this._chunkEncoding = encoding;
+
+ // see: http://www.unicode.org/reports/tr18/#Line_Boundaries
+ var lines = chunk.split(/\r\n|[\n\v\f\r\x85\u2028\u2029]/g);
+
+ // don't split CRLF which spans chunks
+ if (this._lastChunkEndedWithCR && chunk[0] == '\n') {
+ lines.shift();
+ }
+
+ if (this._lineBuffer.length > 0) {
+ this._lineBuffer[this._lineBuffer.length - 1] += lines[0];
+ lines.shift();
+ }
+
+ this._lastChunkEndedWithCR = chunk[chunk.length - 1] == '\r';
+ this._lineBuffer = this._lineBuffer.concat(lines);
+ this._pushBuffer(encoding, 1, done);
+};
+
+LineStream.prototype._pushBuffer = function(encoding, keep, done) {
+ // always buffer the last (possibly partial) line
+ while (this._lineBuffer.length > keep) {
+ var line = this._lineBuffer.shift();
+ // skip empty lines
+ if (this._keepEmptyLines || line.length > 0 ) {
+ if (!this.push(this._reencode(line, encoding))) {
+ // when the high-water mark is reached, defer pushes until the next tick
+ var self = this;
+ timers.setImmediate(function() {
+ self._pushBuffer(encoding, keep, done);
+ });
+ return;
+ }
+ }
+ }
+ done();
+};
+
+LineStream.prototype._flush = function(done) {
+ this._pushBuffer(this._chunkEncoding, 0, done);
+};
+
+// see Readable::push
+LineStream.prototype._reencode = function(line, chunkEncoding) {
+ if (this.encoding && this.encoding != chunkEncoding) {
+ return new Buffer(line, chunkEncoding).toString(this.encoding);
+ }
+ else if (this.encoding) {
+ // this should be the most common case, i.e. we're using an encoded source stream
+ return line;
+ }
+ else {
+ return new Buffer(line, chunkEncoding);
+ }
+};