gitea/models/wiki.go
Tamal Saha 171b359877 Use gitea forked macaron (#7933)
Signed-off-by: Tamal Saha <tamal@appscode.com>
2019-08-23 12:40:29 -04:00

329 lines
8.6 KiB
Go

// Copyright 2015 The Gogs 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 models
import (
"fmt"
"net/url"
"os"
"path/filepath"
"strings"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/sync"
"github.com/unknwon/com"
)
var (
reservedWikiNames = []string{"_pages", "_new", "_edit", "raw"}
wikiWorkingPool = sync.NewExclusivePool()
)
// NormalizeWikiName normalizes a wiki name
func NormalizeWikiName(name string) string {
return strings.Replace(name, "-", " ", -1)
}
// WikiNameToSubURL converts a wiki name to its corresponding sub-URL.
func WikiNameToSubURL(name string) string {
return url.QueryEscape(strings.Replace(name, " ", "-", -1))
}
// WikiNameToFilename converts a wiki name to its corresponding filename.
func WikiNameToFilename(name string) string {
name = strings.Replace(name, " ", "-", -1)
return url.QueryEscape(name) + ".md"
}
// WikiFilenameToName converts a wiki filename to its corresponding page name.
func WikiFilenameToName(filename string) (string, error) {
if !strings.HasSuffix(filename, ".md") {
return "", ErrWikiInvalidFileName{filename}
}
basename := filename[:len(filename)-3]
unescaped, err := url.QueryUnescape(basename)
if err != nil {
return "", err
}
return NormalizeWikiName(unescaped), nil
}
// WikiCloneLink returns clone URLs of repository wiki.
func (repo *Repository) WikiCloneLink() *CloneLink {
return repo.cloneLink(x, true)
}
// WikiPath returns wiki data path by given user and repository name.
func WikiPath(userName, repoName string) string {
return filepath.Join(UserPath(userName), strings.ToLower(repoName)+".wiki.git")
}
// WikiPath returns wiki data path for given repository.
func (repo *Repository) WikiPath() string {
return WikiPath(repo.MustOwnerName(), repo.Name)
}
// HasWiki returns true if repository has wiki.
func (repo *Repository) HasWiki() bool {
return com.IsDir(repo.WikiPath())
}
// InitWiki initializes a wiki for repository,
// it does nothing when repository already has wiki.
func (repo *Repository) InitWiki() error {
if repo.HasWiki() {
return nil
}
if err := git.InitRepository(repo.WikiPath(), true); err != nil {
return fmt.Errorf("InitRepository: %v", err)
} else if err = createDelegateHooks(repo.WikiPath()); err != nil {
return fmt.Errorf("createDelegateHooks: %v", err)
}
return nil
}
// nameAllowed checks if a wiki name is allowed
func nameAllowed(name string) error {
for _, reservedName := range reservedWikiNames {
if name == reservedName {
return ErrWikiReservedName{name}
}
}
return nil
}
// updateWikiPage adds a new page to the repository wiki.
func (repo *Repository) updateWikiPage(doer *User, oldWikiName, newWikiName, content, message string, isNew bool) (err error) {
if err = nameAllowed(newWikiName); err != nil {
return err
}
wikiWorkingPool.CheckIn(com.ToStr(repo.ID))
defer wikiWorkingPool.CheckOut(com.ToStr(repo.ID))
if err = repo.InitWiki(); err != nil {
return fmt.Errorf("InitWiki: %v", err)
}
hasMasterBranch := git.IsBranchExist(repo.WikiPath(), "master")
basePath, err := CreateTemporaryPath("update-wiki")
if err != nil {
return err
}
defer func() {
if err := RemoveTemporaryPath(basePath); err != nil {
log.Error("Merge: RemoveTemporaryPath: %s", err)
}
}()
cloneOpts := git.CloneRepoOptions{
Bare: true,
Shared: true,
}
if hasMasterBranch {
cloneOpts.Branch = "master"
}
if err := git.Clone(repo.WikiPath(), basePath, cloneOpts); err != nil {
log.Error("Failed to clone repository: %s (%v)", repo.FullName(), err)
return fmt.Errorf("Failed to clone repository: %s (%v)", repo.FullName(), err)
}
gitRepo, err := git.OpenRepository(basePath)
if err != nil {
log.Error("Unable to open temporary repository: %s (%v)", basePath, err)
return fmt.Errorf("Failed to open new temporary repository in: %s %v", basePath, err)
}
if hasMasterBranch {
if err := gitRepo.ReadTreeToIndex("HEAD"); err != nil {
log.Error("Unable to read HEAD tree to index in: %s %v", basePath, err)
return fmt.Errorf("Unable to read HEAD tree to index in: %s %v", basePath, err)
}
}
newWikiPath := WikiNameToFilename(newWikiName)
if isNew {
filesInIndex, err := gitRepo.LsFiles(newWikiPath)
if err != nil {
log.Error("%v", err)
return err
}
for _, file := range filesInIndex {
if file == newWikiPath {
return ErrWikiAlreadyExist{newWikiPath}
}
}
} else {
oldWikiPath := WikiNameToFilename(oldWikiName)
filesInIndex, err := gitRepo.LsFiles(oldWikiPath)
if err != nil {
log.Error("%v", err)
return err
}
found := false
for _, file := range filesInIndex {
if file == oldWikiPath {
found = true
break
}
}
if found {
err := gitRepo.RemoveFilesFromIndex(oldWikiPath)
if err != nil {
log.Error("%v", err)
return err
}
}
}
// FIXME: The wiki doesn't have lfs support at present - if this changes need to check attributes here
objectHash, err := gitRepo.HashObject(strings.NewReader(content))
if err != nil {
log.Error("%v", err)
return err
}
if err := gitRepo.AddObjectToIndex("100644", objectHash, newWikiPath); err != nil {
log.Error("%v", err)
return err
}
tree, err := gitRepo.WriteTree()
if err != nil {
log.Error("%v", err)
return err
}
commitTreeOpts := git.CommitTreeOpts{
Message: message,
}
if hasMasterBranch {
commitTreeOpts.Parents = []string{"HEAD"}
}
commitHash, err := gitRepo.CommitTree(doer.NewGitSig(), tree, commitTreeOpts)
if err != nil {
log.Error("%v", err)
return err
}
if err := git.Push(basePath, git.PushOptions{
Remote: "origin",
Branch: fmt.Sprintf("%s:%s%s", commitHash.String(), git.BranchPrefix, "master"),
Env: FullPushingEnvironment(
doer,
doer,
repo,
repo.Name+".wiki",
0,
),
}); err != nil {
log.Error("%v", err)
return fmt.Errorf("Push: %v", err)
}
return nil
}
// AddWikiPage adds a new wiki page with a given wikiPath.
func (repo *Repository) AddWikiPage(doer *User, wikiName, content, message string) error {
return repo.updateWikiPage(doer, "", wikiName, content, message, true)
}
// EditWikiPage updates a wiki page identified by its wikiPath,
// optionally also changing wikiPath.
func (repo *Repository) EditWikiPage(doer *User, oldWikiName, newWikiName, content, message string) error {
return repo.updateWikiPage(doer, oldWikiName, newWikiName, content, message, false)
}
// DeleteWikiPage deletes a wiki page identified by its path.
func (repo *Repository) DeleteWikiPage(doer *User, wikiName string) (err error) {
wikiWorkingPool.CheckIn(com.ToStr(repo.ID))
defer wikiWorkingPool.CheckOut(com.ToStr(repo.ID))
if err = repo.InitWiki(); err != nil {
return fmt.Errorf("InitWiki: %v", err)
}
basePath, err := CreateTemporaryPath("update-wiki")
if err != nil {
return err
}
defer func() {
if err := RemoveTemporaryPath(basePath); err != nil {
log.Error("Merge: RemoveTemporaryPath: %s", err)
}
}()
if err := git.Clone(repo.WikiPath(), basePath, git.CloneRepoOptions{
Bare: true,
Shared: true,
Branch: "master",
}); err != nil {
log.Error("Failed to clone repository: %s (%v)", repo.FullName(), err)
return fmt.Errorf("Failed to clone repository: %s (%v)", repo.FullName(), err)
}
gitRepo, err := git.OpenRepository(basePath)
if err != nil {
log.Error("Unable to open temporary repository: %s (%v)", basePath, err)
return fmt.Errorf("Failed to open new temporary repository in: %s %v", basePath, err)
}
if err := gitRepo.ReadTreeToIndex("HEAD"); err != nil {
log.Error("Unable to read HEAD tree to index in: %s %v", basePath, err)
return fmt.Errorf("Unable to read HEAD tree to index in: %s %v", basePath, err)
}
wikiPath := WikiNameToFilename(wikiName)
filesInIndex, err := gitRepo.LsFiles(wikiPath)
found := false
for _, file := range filesInIndex {
if file == wikiPath {
found = true
break
}
}
if found {
err := gitRepo.RemoveFilesFromIndex(wikiPath)
if err != nil {
return err
}
} else {
return os.ErrNotExist
}
// FIXME: The wiki doesn't have lfs support at present - if this changes need to check attributes here
tree, err := gitRepo.WriteTree()
if err != nil {
return err
}
message := "Delete page '" + wikiName + "'"
commitHash, err := gitRepo.CommitTree(doer.NewGitSig(), tree, git.CommitTreeOpts{
Message: message,
Parents: []string{"HEAD"},
})
if err != nil {
return err
}
if err := git.Push(basePath, git.PushOptions{
Remote: "origin",
Branch: fmt.Sprintf("%s:%s%s", commitHash.String(), git.BranchPrefix, "master"),
Env: PushingEnvironment(doer, repo),
}); err != nil {
return fmt.Errorf("Push: %v", err)
}
return nil
}