github.com/wangyougui/gf/v2@v2.6.5/i18n/gi18n/gi18n_ctx.go (about)

     1  // Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
     2  //
     3  // This Source Code Form is subject to the terms of the MIT License.
     4  // If a copy of the MIT was not distributed with this file,
     5  // You can obtain one at https://github.com/wangyougui/gf.
     6  
     7  // Package gi18n implements internationalization and localization.
     8  package gi18n
     9  
    10  import (
    11  	"context"
    12  
    13  	"github.com/wangyougui/gf/v2/os/gctx"
    14  )
    15  
    16  const (
    17  	ctxLanguage gctx.StrKey = "I18nLanguage"
    18  )
    19  
    20  // WithLanguage append language setting to the context and returns a new context.
    21  func WithLanguage(ctx context.Context, language string) context.Context {
    22  	if ctx == nil {
    23  		ctx = context.TODO()
    24  	}
    25  	return context.WithValue(ctx, ctxLanguage, language)
    26  }
    27  
    28  // LanguageFromCtx retrieves and returns language name from context.
    29  // It returns an empty string if it is not set previously.
    30  func LanguageFromCtx(ctx context.Context) string {
    31  	if ctx == nil {
    32  		return ""
    33  	}
    34  	v := ctx.Value(ctxLanguage)
    35  	if v != nil {
    36  		return v.(string)
    37  	}
    38  	return ""
    39  }