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translation_provider.go
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translation_provider.go
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package microsoft
import (
"encoding/xml"
"fmt"
"io/ioutil"
"net/url"
"github.com/st3v/tracerr"
"github.com/st3v/translator/http"
)
// The TranslationProvider communicates with Microsoft's
// API to provide a translation for a given text.
type TranslationProvider interface {
Translate(text, from, to string) (string, error)
Detect(text string) (string, error)
}
type translationProvider struct {
router Router
httpClient http.Client
}
func newTranslationProvider(authenticator http.Authenticator, router Router) TranslationProvider {
return &translationProvider{
router: router,
httpClient: http.NewClient(authenticator),
}
}
func (p *translationProvider) Translate(text, from, to string) (string, error) {
uri := fmt.Sprintf(
"%s?text=%s&from=%s&to=%s",
p.router.TranslationURL(),
url.QueryEscape(text),
url.QueryEscape(from),
url.QueryEscape(to))
response, err := p.httpClient.SendRequest("GET", uri, nil, "text/plain")
if err != nil {
return "", tracerr.Wrap(err)
}
body, err := ioutil.ReadAll(response.Body)
defer response.Body.Close()
if err != nil {
return "", tracerr.Wrap(err)
}
translation := &xmlString{}
err = xml.Unmarshal(body, &translation)
if err != nil {
return "", tracerr.Wrap(err)
}
return translation.Value, nil
}
func (p *translationProvider) Detect(text string) (string, error) {
uri := fmt.Sprintf(
"%s?text=%s",
p.router.DetectURL(),
url.QueryEscape(text))
response, err := p.httpClient.SendRequest("GET", uri, nil, "text/plain")
if err != nil {
return "", tracerr.Wrap(err)
}
body, err := ioutil.ReadAll(response.Body)
defer response.Body.Close()
if err != nil {
return "", tracerr.Wrap(err)
}
detect := &xmlString{}
err = xml.Unmarshal(body, &detect)
if err != nil {
return "", tracerr.Wrap(err)
}
return detect.Value, nil
}