I have a exe
in go which prints utf-8 encoded strings, with special characters in it.
Since that exe is made to be used from a console window, its output is
The online book "Network programming with Go" (CC BY-NC-SA 3.0) has a chapter on Charsets (Managing character sets and encodings), in which Jan Newmarch details the conversion of one charset to another. But it seems cumbersome.
Here is a solution (I might have missed a much simpler one), using the library go-charset (from Roger Peppe).
I translate an utf-8
string to an ibm850
encoded one, allowing me to print in a DOS windows:
éèïöîôùòèìë
The translation function is detailed below:
package main
import (
"bytes"
"code.google.com/p/go-charset/charset"
_ "code.google.com/p/go-charset/data"
"fmt"
"io"
"log"
"strings"
)
func translate(tr charset.Translator, in string) (string, error) {
var buf bytes.Buffer
r := charset.NewTranslatingReader(strings.NewReader(in), tr)
_, err := io.Copy(&buf, r)
if err != nil {
return "", err
}
return string(buf.Bytes()), nil
}
func Utf2dos(in string) string {
dosCharset := "ibm850"
cs := charset.Info(dosCharset)
if cs == nil {
log.Fatal("no info found for %q", dosCharset)
}
fromtr, err := charset.TranslatorTo(dosCharset)
if err != nil {
log.Fatal("error making translator from %q: %v", dosCharset, err)
}
out, err := translate(fromtr, in)
if err != nil {
log.Fatal("error translating from %q: %v", dosCharset, err)
}
return out
}
func main() {
test := "éèïöîôùòèìë"
fmt.Println("utf-8:\n", test)
fmt.Println("ibm850:\n", Utf2dos(test))
}