# concentrate > Produce binary data with a neat DSL Latest version **0.2.3** (published 2015-01-10) · BSD license · 0 weekly downloads ## Install ```sh npm install concentrate pnpm add concentrate yarn add concentrate bun add concentrate ``` ## Health **Score 15/100 (F)** — status: abandoned. Positive: no vulnerabilities. Warnings: low downloads; no types; no esm support; pre 1.0. Negative: abandoned; low maintenance score. ## Facts | | | |---|---| | Version | 0.2.3 | | Published | 2015-01-10 | | First published | 2012-10-28 | | Weekly downloads | 0 | | License | BSD | | TypeScript types | none | | Module format | CommonJS | | Node | ~0.10.0 | | Dependencies | 0 | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 36 | | Author | Conrad Pankoff | | Maintainers | deoxxa, marushkevych, arthurschreiber | | Keywords | concentrate, binary, data, produce, dsl | ## Links - npm: https://www.npmjs.com/package/concentrate - Repository: https://github.com/deoxxa/concentrate - Issues: https://github.com/deoxxa/concentrate/issues - npm.io page: https://npm.io/package/concentrate ## Alternatives - [gamedig](https://npm.io/package/gamedig.md) — 29.3K weekly downloads - [join-monster](https://npm.io/package/join-monster.md) — 12.8K weekly downloads - [masked](https://npm.io/package/masked.md) — 5.5K weekly downloads - [@comunica/actor-query-process-explain-logical](https://npm.io/package/@comunica/actor-query-process-explain-logical.md) — 4.7K weekly downloads - [@veracity/vui](https://npm.io/package/@veracity/vui.md) — 4.6K weekly downloads ## Recent versions - 0.2.3 (latest) — 2015-01-10 - 0.2.2 — 2013-04-06 - 0.1.1 — 2012-10-28 - 0.0.1 — 2012-10-28 ## README Concentrate =========== Produce binary data with a neat DSL. Overview -------- Concentrate allows you to efficiently create buffers by chaining together calls to write numbers, strings and even other buffers! Concentrate is also easily extendable so you can implement your own custom types. If you want to parse binary data, might I suggest [dissolve](https://github.com/deoxxa/dissolve)? Features -------- * Accurate handling of [u]int{8,16,32} numbers in both signed and unsigned variants using fast, built-in [Buffer](http://nodejs.org/docs/latest/api/buffer.html) methods * Fast and reliable operation through lazy compilation of results * Tiny (<150 LoC) implementation, allowing for easy debugging * Stream interface with explicit flushing for maximum speeeeeeed (inspired by felixge, so you know it's good!) Installation ------------ Available via [npm](http://npmjs.org/): > $ npm install concentrate Or via git: > $ git clone git://github.com/deoxxa/concentrate.git node_modules/concentrate Usage ----- Also see [example.js](https://github.com/deoxxa/concentrate/blob/master/example.js) and [example-complex.js](https://github.com/deoxxa/concentrate/blob/master/example-complex.js). ```javascript #!/usr/bin/env node var Concentrate = require("./index"); var data = Concentrate().uint8(1).uint8(2).uint32be(555).string("hi there", "utf8").result(); console.log(data); ``` ``` ``` Oh look! Streams! Also see [example-stream.js](https://github.com/deoxxa/concentrate/blob/master/example-stream.js). ```javascript #!/usr/bin/env node var Concentrate = require("./index"); var c = Concentrate(); c.on("end", function() { console.log("ended"); }); c.on("readable", function() { var e; while (e = c.read()) { console.log(e); } }); c.uint8(1).uint8(2).uint32be(555).string("hi there", "utf8").floatbe(2.1).doublebe(2.1).flush(); c.uint8(5).uint8(6); c.uint8(7); c.uint8(30); c.flush().end(); ``` ``` ended ``` Methods ------- All methods aside from `result` are chainable and all except `copy` return the same Concentrate instance they were called on. Execution Methods ----------------- * `copy()` - returns a new copy of the current Concentrate instance, copying the state of the current job list * `reset()` - resets the job list * `result()` - compiles the job list into a buffer and returns that buffer * `flush()` - compiles the current job list, emits it via the stream API, then clears the current job list * `end()` - ends the stream part of Concentrate (basically makes it emit "end") Writing methods --------------- * `buffer(data)` * `string(data, encoding)` - write a string with the given encoding * `int8(data)` - signed 8 bit integer * `sint8(data)` - signed 8 bit integer * `uint8(data)` - unsigned 8 bit integer * `int16(data)` - signed, little endian 16 bit integer * `int16le(data)` - signed, little endian 16 bit integer * `int16be(data)` - signed, big endian 16 bit integer * `sint16(data)` - signed, little endian 16 bit integer * `sint16le(data)` - signed, little endian 16 bit integer * `sint16be(data)` - signed, big endian 16 bit integer * `uint16(data)` - unsigned, little endian 16 bit integer * `uint16le(data)` - unsigned, little endian 16 bit integer * `uint16be(data)` - unsigned, big endian 16 bit integer * `int32(data)` - signed, little endian 32 bit integer * `int32le(data)` - signed, little endian 32 bit integer * `int32be(data)` - signed, big endian 32 bit integer * `sint32(data)` - signed, little endian 32 bit integer * `sint32le(data)` - signed, little endian 32 bit integer * `sint32be(data)` - signed, big endian 32 bit integer * `uint32(data)` - unsigned, little endian 32 bit integer * `uint32le(data)` - unsigned, little endian 32 bit integer * `uint32be(data)` - unsigned, big endian 32 bit integer * `floatbe(data)` - big endian 32 bit float * `floatle(data)` - little endian 32 bit float * `doublebe(data)` - big endian 64 bit double * `doublele(data)` - little endian 64 bit double License ------- 3-clause BSD. A copy is included with the source. Contact ------- * GitHub ([deoxxa](http://github.com/deoxxa)) * Twitter ([@deoxxa](http://twitter.com/deoxxa)) * ADN ([@deoxxa](https://alpha.app.net/deoxxa)) * Email ([deoxxa@fknsrs.biz](mailto:deoxxa@fknsrs.biz)) --- _Source: https://npm.io/package/concentrate · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._