compresschecker

compress checker is a golang package that simplifies identifying compressed data in an efficient manner

How efficient is it?

All operations use zero allocations and complete under 40 ns on a modern machine

Supported Compression Formats

• zstd
• avro
• parquet
• xz
• rar
• zip
• gzip
• bzip2
• snappy
• 7zip

Example Usage

With a Reader

package main

import (
	"fmt"
	"github.com/darwayne/compresschecker"
	"strings"
)

func main() {
	var stream = strings.NewReader("hello word")
	var reader = compresschecker.NewReadChecker(stream)
	defer reader.Close()
	if reader.IsCompressed() {
		fmt.Println("compression detected", reader.CompressionType())
	} else {
		fmt.Println("no compression detected")
    }
}

With a string

package main

import (
	"fmt"
	"github.com/darwayne/compresschecker"
	"strings"
)

func main() {
	var stream = "hello word"
	info := compresschecker.FormatOfString(stream)
	if info.IsCompressed() {
		fmt.Println("compression detected", info)
	} else {
		fmt.Println("no compression detected")
    }
}

With a byte slice

package main

import (
	"fmt"
	"github.com/darwayne/compresschecker"
)

func main() {
	var stream = []byte("hello word")
	info := compresschecker.FormatOfBytes(stream)
	if info.IsCompressed() {
		fmt.Println("compression detected", info)
	} else {
		fmt.Println("no compression detected")
	}
}