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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,10 +1,6 @@ | ||
| language: node_js | ||
| sudo: false | ||
| node_js: | ||
| - 0.12 | ||
| - iojs | ||
| - 4 | ||
| - 5 | ||
| - 6 | ||
| notifications: | ||
| email: | ||
|
|
||
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Learn more about bidirectional Unicode characters
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,111 +1,113 @@ | ||
| 'use strict'; | ||
|
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| var stream = require('stream'); | ||
| var Transform = stream.Transform; | ||
| var util = require('util'); | ||
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| module.exports = DataStream; | ||
| const stream = require('stream'); | ||
| const Transform = stream.Transform; | ||
|
|
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| /** | ||
| * Escapes dots in the beginning of lines. Ends the stream with <CR><LF>.<CR><LF> | ||
| * Also makes sure that only <CR><LF> sequences are used for linebreaks | ||
| * | ||
| * @param {Object} options Stream options | ||
| */ | ||
| function DataStream(options) { | ||
| // init Transform | ||
| this.options = options || {}; | ||
| this._curLine = ''; | ||
| class DataStream extends Transform { | ||
|
|
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| this.inByteCount = 0; | ||
| this.outByteCount = 0; | ||
| this.lastByte = false; | ||
| constructor(options) { | ||
| super(options); | ||
| // init Transform | ||
| this.options = options || {}; | ||
| this._curLine = ''; | ||
|
|
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| Transform.call(this, this.options); | ||
| } | ||
| util.inherits(DataStream, Transform); | ||
| this.inByteCount = 0; | ||
| this.outByteCount = 0; | ||
| this.lastByte = false; | ||
|
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| /** | ||
| * Escapes dots | ||
| */ | ||
| DataStream.prototype._transform = function (chunk, encoding, done) { | ||
| var chunks = []; | ||
| var chunklen = 0; | ||
| var i, len, lastPos = 0; | ||
| var buf; | ||
|
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| if (!chunk || !chunk.length) { | ||
| return done(); | ||
| } | ||
|
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| if (typeof chunk === 'string') { | ||
| chunk = new Buffer(chunk); | ||
| } | ||
| /** | ||
| * Escapes dots | ||
| */ | ||
| _transform(chunk, encoding, done) { | ||
| let chunks = []; | ||
| let chunklen = 0; | ||
| let i, len, lastPos = 0; | ||
| let buf; | ||
|
|
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| this.inByteCount += chunk.length; | ||
| if (!chunk || !chunk.length) { | ||
| return done(); | ||
| } | ||
|
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| for (i = 0, len = chunk.length; i < len; i++) { | ||
| if (chunk[i] === 0x2E) { // . | ||
| if ( | ||
| (i && chunk[i - 1] === 0x0A) || | ||
| (!i && (!this.lastByte || this.lastByte === 0x0A)) | ||
| ) { | ||
| buf = chunk.slice(lastPos, i + 1); | ||
| chunks.push(buf); | ||
| chunks.push(new Buffer('.')); | ||
| chunklen += buf.length + 1; | ||
| lastPos = i + 1; | ||
| } | ||
| } else if (chunk[i] === 0x0A) { // . | ||
| if ( | ||
| (i && chunk[i - 1] !== 0x0D) || | ||
| (!i && this.lastByte !== 0x0D) | ||
| ) { | ||
| if (i > lastPos) { | ||
| buf = chunk.slice(lastPos, i); | ||
| if (typeof chunk === 'string') { | ||
| chunk = new Buffer(chunk); | ||
| } | ||
|
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| this.inByteCount += chunk.length; | ||
|
|
||
| for (i = 0, len = chunk.length; i < len; i++) { | ||
| if (chunk[i] === 0x2E) { // . | ||
| if ( | ||
| (i && chunk[i - 1] === 0x0A) || | ||
| (!i && (!this.lastByte || this.lastByte === 0x0A)) | ||
| ) { | ||
| buf = chunk.slice(lastPos, i + 1); | ||
| chunks.push(buf); | ||
| chunklen += buf.length + 2; | ||
| } else { | ||
| chunklen += 2; | ||
| chunks.push(new Buffer('.')); | ||
| chunklen += buf.length + 1; | ||
| lastPos = i + 1; | ||
| } | ||
| } else if (chunk[i] === 0x0A) { // . | ||
| if ( | ||
| (i && chunk[i - 1] !== 0x0D) || | ||
| (!i && this.lastByte !== 0x0D) | ||
| ) { | ||
| if (i > lastPos) { | ||
| buf = chunk.slice(lastPos, i); | ||
| chunks.push(buf); | ||
| chunklen += buf.length + 2; | ||
| } else { | ||
| chunklen += 2; | ||
| } | ||
| chunks.push(new Buffer('\r\n')); | ||
| lastPos = i + 1; | ||
| } | ||
| chunks.push(new Buffer('\r\n')); | ||
| lastPos = i + 1; | ||
| } | ||
| } | ||
| } | ||
|
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||
| if (chunklen) { | ||
| // add last piece | ||
| if (lastPos < chunk.length) { | ||
| buf = chunk.slice(lastPos); | ||
| chunks.push(buf); | ||
| chunklen += buf.length; | ||
| if (chunklen) { | ||
| // add last piece | ||
| if (lastPos < chunk.length) { | ||
| buf = chunk.slice(lastPos); | ||
| chunks.push(buf); | ||
| chunklen += buf.length; | ||
| } | ||
|
|
||
| this.outByteCount += chunklen; | ||
| this.push(Buffer.concat(chunks, chunklen)); | ||
| } else { | ||
| this.outByteCount += chunk.length; | ||
| this.push(chunk); | ||
| } | ||
|
|
||
| this.outByteCount += chunklen; | ||
| this.push(Buffer.concat(chunks, chunklen)); | ||
| } else { | ||
| this.outByteCount += chunk.length; | ||
| this.push(chunk); | ||
| this.lastByte = chunk[chunk.length - 1]; | ||
| done(); | ||
| } | ||
|
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| this.lastByte = chunk[chunk.length - 1]; | ||
| done(); | ||
| }; | ||
|
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| /** | ||
| * Finalizes the stream with a dot on a single line | ||
| */ | ||
| DataStream.prototype._flush = function (done) { | ||
| var buf; | ||
| if (this.lastByte === 0x0A) { | ||
| buf = new Buffer('.\r\n'); | ||
| } else if (this.lastByte === 0x0D) { | ||
| buf = new Buffer('\n.\r\n'); | ||
| } else { | ||
| buf = new Buffer('\r\n.\r\n'); | ||
| /** | ||
| * Finalizes the stream with a dot on a single line | ||
| */ | ||
| _flush(done) { | ||
| let buf; | ||
| if (this.lastByte === 0x0A) { | ||
| buf = new Buffer('.\r\n'); | ||
| } else if (this.lastByte === 0x0D) { | ||
| buf = new Buffer('\n.\r\n'); | ||
| } else { | ||
| buf = new Buffer('\r\n.\r\n'); | ||
| } | ||
| this.outByteCount += buf.length; | ||
| this.push(buf); | ||
| done(); | ||
| } | ||
| this.outByteCount += buf.length; | ||
| this.push(buf); | ||
| done(); | ||
| }; | ||
|
|
||
| } | ||
|
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| module.exports = DataStream; |
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