Code Monkey home page Code Monkey logo

blast's Introduction

blast Go Documentation Travis

Golang library for both compressing and decompressing data in the PKWare Data Compression Library (DCL) compressed format, otherwise known as "explode" and "implode" which differ from PKZIP.

Based on:

blast.c in ZLIB written by Mark Adler https://github.com/madler/zlib/blob/master/contrib/blast/blast.c

implode.c Ladislav Zezula 2003 https://github.com/ladislav-zezula/StormLib/blob/master/src/pklib/implode.c

Installation

go get github.com/JoshVarga/blast

Features

Compress ("implode") data using the PKWARE DCL "implode" method
Decompress ("explode") data that has been compressed using PKWARE DCL "implode" method

Example

func ExampleNewWriter() {
	var b bytes.Buffer
	w := blast.NewWriter(&b, blast.Binary, blast.DictionarySize1024)
	w.Write([]byte("AIAIAIAIAIAIA"))
	w.Close()
	fmt.Println(b.Bytes())
	// Output: [0 4 130 36 37 143 128 127]
}

func ExampleNewReader() {
	buff := []byte{0, 4, 130, 36, 37, 143, 128, 127}
	b := bytes.NewReader(buff)
	r, err := blast.NewReader(b)
	if err != nil {
		panic(err)
	}
	io.Copy(os.Stdout, r)
	// Output: AIAIAIAIAIAIA
	r.Close()
}

License

Copyright (c) 2018 Josh Varga

Explode: Original C version: Copyright (C) 2003, 2012, 2013 Mark Adler, version 1.3, 24 Aug 2013

Implode: Original C version: Copyright (c) Ladislav Zezula 2003

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

blast's People

Stargazers

 avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar

Watchers

 avatar  avatar

blast's Issues

"runtime error: index out of range" while imploding large data

Hi
When trying to compress an large amount of data I get an error.
In my case with settings (Binary, DictionarySize1024) I get an error at around 12kb, with 2048 and 4096 even at less.

exploding works fine

panic: runtime error: index out of range [18446744073709551615] with length 8708

goroutine 1 [running]:
main.getBytePairHash(...)
        writer.go:175
main.sortBuffer(0xc0000ea000, 0x0, 0x2001)
        writer.go:218 +0x1a8
main.writeCmpData(0xc0000ea000)
        writer.go:613 +0x187
main.implode({0x23d6e0, 0xc0000c2480}, {0x23d700, 0xc0000c2450}, 0xc0000ea000, 0x1fa52590dd8, 0x11)
        writer.go:811 +0x22a
main.(*Writer).Close(...)
        writer.go:853

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    ๐Ÿ–– Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. ๐Ÿ“Š๐Ÿ“ˆ๐ŸŽ‰

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google โค๏ธ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.