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forgejo/models/repo/wiki.go
zeripath 716fcfcf72
Make every not exist error unwrappable to a fs.ErrNotExist (#20891)
A lot of our code is repeatedly testing if individual errors are
specific types of Not Exist errors. This is repetitative and unnecesary.
`Unwrap() error` provides a common way of labelling an error as a
NotExist error and we can/should use this.

This PR has chosen to use the common `io/fs` errors e.g.
`fs.ErrNotExist` for our errors. This is in some ways not completely
correct as these are not filesystem errors but it seems like a
reasonable thing to do and would allow us to simplify a lot of our code
to `errors.Is(err, fs.ErrNotExist)` instead of
`package.IsErr...NotExist(err)`

I am open to suggestions to use a different base error - perhaps
`models/db.ErrNotExist` if that would be felt to be better.


Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: delvh <dev.lh@web.de>
2022-10-18 07:50:37 +02:00

97 lines
2.5 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package repo
import (
"fmt"
"path/filepath"
"strings"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/util"
)
// ErrWikiAlreadyExist represents a "WikiAlreadyExist" kind of error.
type ErrWikiAlreadyExist struct {
Title string
}
// IsErrWikiAlreadyExist checks if an error is an ErrWikiAlreadyExist.
func IsErrWikiAlreadyExist(err error) bool {
_, ok := err.(ErrWikiAlreadyExist)
return ok
}
func (err ErrWikiAlreadyExist) Error() string {
return fmt.Sprintf("wiki page already exists [title: %s]", err.Title)
}
func (err ErrWikiAlreadyExist) Unwrap() error {
return util.ErrAlreadyExist
}
// ErrWikiReservedName represents a reserved name error.
type ErrWikiReservedName struct {
Title string
}
// IsErrWikiReservedName checks if an error is an ErrWikiReservedName.
func IsErrWikiReservedName(err error) bool {
_, ok := err.(ErrWikiReservedName)
return ok
}
func (err ErrWikiReservedName) Error() string {
return fmt.Sprintf("wiki title is reserved: %s", err.Title)
}
func (err ErrWikiReservedName) Unwrap() error {
return util.ErrInvalidArgument
}
// ErrWikiInvalidFileName represents an invalid wiki file name.
type ErrWikiInvalidFileName struct {
FileName string
}
// IsErrWikiInvalidFileName checks if an error is an ErrWikiInvalidFileName.
func IsErrWikiInvalidFileName(err error) bool {
_, ok := err.(ErrWikiInvalidFileName)
return ok
}
func (err ErrWikiInvalidFileName) Error() string {
return fmt.Sprintf("Invalid wiki filename: %s", err.FileName)
}
func (err ErrWikiInvalidFileName) Unwrap() error {
return util.ErrInvalidArgument
}
// WikiCloneLink returns clone URLs of repository wiki.
func (repo *Repository) WikiCloneLink() *CloneLink {
return repo.cloneLink(true)
}
// WikiPath returns wiki data path by given user and repository name.
func WikiPath(userName, repoName string) string {
return filepath.Join(user_model.UserPath(userName), strings.ToLower(repoName)+".wiki.git")
}
// WikiPath returns wiki data path for given repository.
func (repo *Repository) WikiPath() string {
return WikiPath(repo.OwnerName, repo.Name)
}
// HasWiki returns true if repository has wiki.
func (repo *Repository) HasWiki() bool {
isDir, err := util.IsDir(repo.WikiPath())
if err != nil {
log.Error("Unable to check if %s is a directory: %v", repo.WikiPath(), err)
}
return isDir
}