1 files changed, 96 insertions, 0 deletions
diff --git a/models/repo/wiki.go b/models/repo/wiki.go
new file mode 100644
index 00000000..b378666a
--- /dev/null
+++ b/models/repo/wiki.go
@@ -0,0 +1,96 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+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
+}