How Convert StringText To Binary And Conversely Using Go

Question

i want Convert Text(type=String) To Binary(type=String) And Conversely Using Go

some userfull link : Golang: How to convert String to binary representation & Convert string to binary in Go

but i need another.

i want example convert a text like hello to binary. and next can convert then binary to first text(hello).

var hash_text := hash("hello")//example return *****
var unhash_text := unhash(hash_text);//return hello

like this gist.github.com/hutt/8978333 (using php)

also speed for me is importamt.

what do you mean by "binary"? Your example of changing a string to ***** and magically transforming it back doesn't make any sense — Mr_Pink
– Mr_Pink, Commented Jan 31, 2017 at 15:03
I still don't understand. A string is just a slice of bytes, and can be converted directly to []byte, it already is as "binary" as you can get. Please show exactly the output you expect. — Mr_Pink
– Mr_Pink, Commented Jan 31, 2017 at 15:16
1101000 1100101 1101100 1101100 1101111 == hello in this php source — Love Python
– Love Python, Commented Jan 31, 2017 at 15:19

Mr_Pink · Accepted Answer · 2017-01-31 16:08:50Z

2

Convert each byte individually to its base 2 representation. You can use strconv.ParseUint to convert the base2 back to bytes.

func stringToBase2(s string) string {
    var buf bytes.Buffer
    for i := 0; i < len(s); i++ {
        fmt.Fprintf(&buf, "%08b", s[i])
    }
    return buf.String()
}

func base2ToString(s string) string {
    var out []byte
    for i := 0; i+8 <= len(s); i += 8 {
        b, err := strconv.ParseUint(s[i:i+8], 2, 8)
        if err != nil {
            panic(err)
        }
        out = append(out, byte(b))
    }
    return string(out)
}

https://play.golang.org/p/cLvoPHZ-hH

answered Jan 31, 2017 at 16:08

Mr_Pink

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9 Comments

Love Python Over a year ago

need try,catch to not show error if not binary.. example : fmt.Println(base2ToString("jdfgidjfigjdfidfg")) how fix this? show error : panic: strconv.ParseUint: parsing "jdfgidjf": invalid syntax??? how fix?

Mr_Pink Over a year ago

I purposely made it panic on invalid input. If you want to catch all errors, you are free to do so.

Mr_Pink Over a year ago

instead of panic, return the error and handle it. Have you gone over the basics of Go? Maybe take the Tour of Go

Mr_Pink Over a year ago

@LovePython: adler32 is a checksum, you can't "decode" it. Do you mean adler32.Checksum? Please take some time to learn the basics and how to check the documentation.

Love Python Over a year ago

oh, Ok. i have a text(number). how can minify this? what hash is better and minify?

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