How to convert a URL-encoded string to its decoded form using strconv in Golang?

To convert a URL-encoded string to its decoded form using strconv in Golang, you can use the Unquote function from the strconv package.

Here is an example of how you can do it:

package main

import (
    "fmt"
    "net/url"
    "strconv"
)

func main() {
    // URL-encoded string
    encodedString := "%2Fhello%2Fworld%3Ffoo%3Dbar%26baz%3Dqux"

    // Decoding the URL-encoded string
    decodedString, err := url.QueryUnescape(encodedString)
    if err != nil {
        fmt.Println("Error while decoding:", err)
        return
    }

    // Unquoting the URL-encoded string (if needed)
    unquotedString, err := strconv.Unquote(decodedString)
    if err != nil {
        // If the decoded string was not surrounded by double quotes, it will return the same decoded string
        unquotedString = decodedString
    }

    fmt.Println("Decoded string:", unquotedString)
}

In this example, the url.QueryUnescape function is used to decode the URL-encoded string. Then, the strconv.Unquote function is used to unquote the decoded string, if it is surrounded by double quotes.