How Can I Convert Text Encodings to UTF-8 Using Go\'s `encoding` Package?

Convert Encodings to UTF-8 with Go's encoding Package

The encoding package in Go provides support for converting text from one encoding to another, including UTF-8. Here's how you can utilize this package for text conversion:

To convert from one encoding to UTF-8, you can use the following steps:

1. Import the encoding package:

   import (
    "encoding/json"
    "fmt"
    "io/ioutil"
    "strings"
   )

2. Declare a bytes.Buffer to store the encoded text.
3. Create an encoder for the desired output encoding (UTF-8 in this case) and connect it to the buffer.
4. Encode the source text and write it to the buffer.
5. Close the encoder to flush any remaining data.

Here's an example that converts a UTF-8 string to ShiftJIS and back:

// Convert String from UTF-8 to another encoding
func convertEncoding(s string, encoding string) string {
    encoder := json.NewEncoder(new(bytes.Buffer))
    if err := encoder.Encode(s); err != nil {
        fmt.Println("Encoding failed:", err)
        return ""
    }
    encodedStr, err := ioutil.ReadAll(encoder.Buffered())
    if err != nil {
        fmt.Println("Reading encoded string failed:", err)
        return ""
    }
    return strings.TrimSpace(string(encodedStr))
}

func main() {
    original := "日本語"
    encoded := convertEncoding(original, "shift_jis")
    fmt.Println("Encoded:", encoded)
    decoded := convertEncoding(encoded, "utf-8")
    fmt.Println("Decoded:", decoded)
}

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