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https://github.com/go-gitea/gitea
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Symlinks are followed when you click on a link next to an entry, either until a file has been found or until we know that the link is dead. When the link cannot be accessed, we fall back to the current behavior of showing the document containing the target. --------- Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
98 lines
3.2 KiB
Go
98 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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package util
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import (
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"errors"
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"fmt"
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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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// 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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// 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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// 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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// 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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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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// 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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// 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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// 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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// 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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// 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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// 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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// 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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// 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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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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