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			99 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			99 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| // Copyright 2022 The Gitea Authors. All rights reserved.
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| // SPDX-License-Identifier: MIT
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| 
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| package util
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| 
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| import (
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| 	"errors"
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| 	"fmt"
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| )
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| 
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| // Common Errors forming the base of our error system
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| //
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| // Many Errors returned by Gitea can be tested against these errors using "errors.Is".
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| var (
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| 	ErrInvalidArgument  = errors.New("invalid argument")        // also implies HTTP 400
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| 	ErrPermissionDenied = errors.New("permission denied")       // also implies HTTP 403
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| 	ErrNotExist         = errors.New("resource does not exist") // also implies HTTP 404
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| 	ErrAlreadyExist     = errors.New("resource already exists") // also implies HTTP 409
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| 	ErrContentTooLarge  = errors.New("content exceeds limit")   // also implies HTTP 413
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| 
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| 	// ErrUnprocessableContent implies HTTP 422, the syntax of the request content is correct,
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| 	// but the server is unable to process the contained instructions
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| 	ErrUnprocessableContent = errors.New("unprocessable content")
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| )
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| 
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| // errorWrapper provides a simple wrapper for a wrapped error where the wrapped error message plays no part in the error message
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| // Especially useful for "untyped" errors created with "errors.New(…)" that can be classified as 'invalid argument', 'permission denied', 'exists already', or 'does not exist'
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| type errorWrapper struct {
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| 	Message string
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| 	Err     error
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| }
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| 
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| // Error returns the message
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| func (w errorWrapper) Error() string {
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| 	return w.Message
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| }
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| 
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| // Unwrap returns the underlying error
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| func (w errorWrapper) Unwrap() error {
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| 	return w.Err
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| }
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| 
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| type LocaleWrapper struct {
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| 	err    error
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| 	TrKey  string
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| 	TrArgs []any
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| }
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| 
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| // Error returns the message
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| func (w LocaleWrapper) Error() string {
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| 	return w.err.Error()
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| }
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| 
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| // Unwrap returns the underlying error
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| func (w LocaleWrapper) Unwrap() error {
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| 	return w.err
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| }
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| 
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| // ErrorWrap returns an error that formats as the given text but unwraps as the provided error
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| func ErrorWrap(unwrap error, message string, args ...any) error {
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| 	if len(args) == 0 {
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| 		return errorWrapper{Message: message, Err: unwrap}
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| 	}
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| 	return errorWrapper{Message: fmt.Sprintf(message, args...), Err: unwrap}
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| }
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| 
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| // NewInvalidArgumentErrorf returns an error that formats as the given text but unwraps as an ErrInvalidArgument
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| func NewInvalidArgumentErrorf(message string, args ...any) error {
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| 	return ErrorWrap(ErrInvalidArgument, message, args...)
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| }
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| 
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| // NewPermissionDeniedErrorf returns an error that formats as the given text but unwraps as an ErrPermissionDenied
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| func NewPermissionDeniedErrorf(message string, args ...any) error {
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| 	return ErrorWrap(ErrPermissionDenied, message, args...)
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| }
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| 
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| // NewAlreadyExistErrorf returns an error that formats as the given text but unwraps as an ErrAlreadyExist
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| func NewAlreadyExistErrorf(message string, args ...any) error {
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| 	return ErrorWrap(ErrAlreadyExist, message, args...)
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| }
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| 
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| // NewNotExistErrorf returns an error that formats as the given text but unwraps as an ErrNotExist
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| func NewNotExistErrorf(message string, args ...any) error {
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| 	return ErrorWrap(ErrNotExist, message, args...)
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| }
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| 
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| // ErrorWrapLocale wraps an err with a translation key and arguments
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| func ErrorWrapLocale(err error, trKey string, trArgs ...any) error {
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| 	return LocaleWrapper{err: err, TrKey: trKey, TrArgs: trArgs}
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| }
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| 
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| func ErrorAsLocale(err error) *LocaleWrapper {
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| 	var e LocaleWrapper
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| 	if errors.As(err, &e) {
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| 		return &e
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| 	}
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| 	return nil
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| }
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