104 lines
2.6 KiB
Go
104 lines
2.6 KiB
Go
package translator
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"golang.org/x/text/language"
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"io"
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"net/http"
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"net/url"
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"time"
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)
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// NewGoogleTranslatorTokenFree 创建一个新的无token的Google翻译器实例
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func NewGoogleTranslatorTokenFree() *GoogleTranslatorTokenFree {
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return &GoogleTranslatorTokenFree{
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httpClient: &http.Client{Timeout: defaultTimeout},
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Timeout: defaultTimeout,
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languages: initGoogleLanguages(),
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}
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}
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// SetTimeout 设置请求超时时间
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func (t *GoogleTranslatorTokenFree) SetTimeout(timeout time.Duration) {
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t.Timeout = timeout
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t.httpClient.Timeout = timeout
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}
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// Translate 使用Go语言提供的标准语言标签进行文本翻译
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func (t *GoogleTranslatorTokenFree) Translate(text string, from language.Tag, to language.Tag) (string, error) {
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return t.translate(text, from.String(), to.String())
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}
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// TranslateWithParams 使用简单字符串参数进行文本翻译
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func (t *GoogleTranslatorTokenFree) TranslateWithParams(text string, params TranslationParams) (string, error) {
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if params.Timeout > 0 {
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t.SetTimeout(params.Timeout)
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}
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return t.translate(text, params.From, params.To)
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}
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// translate 执行实际翻译操作（无token版本）
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func (t *GoogleTranslatorTokenFree) translate(text, from, to string) (string, error) {
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ctx, cancel := context.WithTimeout(context.Background(), t.Timeout)
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defer cancel()
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// 构建请求URL（无token版本）
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apiURL := "https://translate.googleapis.com/translate_a/t"
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params := url.Values{}
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params.Set("client", "dict-chrome-ex")
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params.Set("sl", from)
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params.Set("tl", to)
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params.Set("q", text)
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fullURL := apiURL + "?" + params.Encode()
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// 创建请求
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req, err := http.NewRequestWithContext(ctx, "GET", fullURL, nil)
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if err != nil {
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return "", err
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}
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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// 发送请求
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resp, err := t.httpClient.Do(req)
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if err != nil {
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return "", ErrBadNetwork
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return "", fmt.Errorf("API error: status code %d", resp.StatusCode)
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}
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// 读取响应
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return "", err
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}
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// 解析JSON响应
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var result []interface{}
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if err := json.Unmarshal(body, &result); err != nil {
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return "", err
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}
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// 提取翻译文本
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var translatedTexts []string
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visitArrayItems(result, func(obj interface{}) {
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if text, ok := obj.(string); ok {
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translatedTexts = append(translatedTexts, text)
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}
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})
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if len(translatedTexts) == 0 {
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return "", errors.New("no translation found")
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}
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// 返回第一个翻译结果
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return translatedTexts[0], nil
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}
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