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gitea/routers/web/repo/blame.go
Lunny Xiao b79c30435f
Use the database object format name but not read from git repoisitory everytime and fix possible migration wrong objectformat when migrating a sha256 repository (#29294)
Now we can get object format name from git command line or from the
database repository table. Assume the column is right, we don't need to
read from git command line every time.

This also fixed a possible bug that the object format is wrong when
migrating a sha256 repository from external.

<img width="658" alt="image"
src="https://github.com/go-gitea/gitea/assets/81045/6e9a9dcf-13bf-4267-928b-6bf2c2560423">
2024-02-24 06:55:19 +00:00

318 lines
8.3 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repo
import (
"fmt"
gotemplate "html/template"
"net/http"
"net/url"
"strconv"
"strings"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/charset"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/highlight"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/templates"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
files_service "code.gitea.io/gitea/services/repository/files"
)
type blameRow struct {
RowNumber int
Avatar gotemplate.HTML
RepoLink string
PartSha string
PreviousSha string
PreviousShaURL string
IsFirstCommit bool
CommitURL string
CommitMessage string
CommitSince gotemplate.HTML
Code gotemplate.HTML
EscapeStatus *charset.EscapeStatus
}
// RefBlame render blame page
func RefBlame(ctx *context.Context) {
fileName := ctx.Repo.TreePath
if len(fileName) == 0 {
ctx.NotFound("Blame FileName", nil)
return
}
branchLink := ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL()
treeLink := branchLink
rawLink := ctx.Repo.RepoLink + "/raw/" + ctx.Repo.BranchNameSubURL()
if len(ctx.Repo.TreePath) > 0 {
treeLink += "/" + util.PathEscapeSegments(ctx.Repo.TreePath)
}
var treeNames []string
paths := make([]string, 0, 5)
if len(ctx.Repo.TreePath) > 0 {
treeNames = strings.Split(ctx.Repo.TreePath, "/")
for i := range treeNames {
paths = append(paths, strings.Join(treeNames[:i+1], "/"))
}
ctx.Data["HasParentPath"] = true
if len(paths)-2 >= 0 {
ctx.Data["ParentPath"] = "/" + paths[len(paths)-1]
}
}
// Get current entry user currently looking at.
entry, err := ctx.Repo.Commit.GetTreeEntryByPath(ctx.Repo.TreePath)
if err != nil {
HandleGitError(ctx, "Repo.Commit.GetTreeEntryByPath", err)
return
}
blob := entry.Blob()
ctx.Data["Paths"] = paths
ctx.Data["TreeLink"] = treeLink
ctx.Data["TreeNames"] = treeNames
ctx.Data["BranchLink"] = branchLink
ctx.Data["RawFileLink"] = rawLink + "/" + util.PathEscapeSegments(ctx.Repo.TreePath)
ctx.Data["PageIsViewCode"] = true
ctx.Data["IsBlame"] = true
ctx.Data["FileSize"] = blob.Size()
ctx.Data["FileName"] = blob.Name()
ctx.Data["NumLines"], err = blob.GetBlobLineCount()
ctx.Data["NumLinesSet"] = true
if err != nil {
ctx.NotFound("GetBlobLineCount", err)
return
}
bypassBlameIgnore, _ := strconv.ParseBool(ctx.FormString("bypass-blame-ignore"))
result, err := performBlame(ctx, ctx.Repo.Repository.RepoPath(), ctx.Repo.Commit, fileName, bypassBlameIgnore)
if err != nil {
ctx.NotFound("CreateBlameReader", err)
return
}
ctx.Data["UsesIgnoreRevs"] = result.UsesIgnoreRevs
ctx.Data["FaultyIgnoreRevsFile"] = result.FaultyIgnoreRevsFile
// Get Topics of this repo
renderRepoTopics(ctx)
if ctx.Written() {
return
}
commitNames := processBlameParts(ctx, result.Parts)
if ctx.Written() {
return
}
renderBlame(ctx, result.Parts, commitNames)
ctx.HTML(http.StatusOK, tplRepoHome)
}
type blameResult struct {
Parts []*git.BlamePart
UsesIgnoreRevs bool
FaultyIgnoreRevsFile bool
}
func performBlame(ctx *context.Context, repoPath string, commit *git.Commit, file string, bypassBlameIgnore bool) (*blameResult, error) {
objectFormat := ctx.Repo.GetObjectFormat()
blameReader, err := git.CreateBlameReader(ctx, objectFormat, repoPath, commit, file, bypassBlameIgnore)
if err != nil {
return nil, err
}
r := &blameResult{}
if err := fillBlameResult(blameReader, r); err != nil {
_ = blameReader.Close()
return nil, err
}
err = blameReader.Close()
if err != nil {
if len(r.Parts) == 0 && r.UsesIgnoreRevs {
// try again without ignored revs
blameReader, err = git.CreateBlameReader(ctx, objectFormat, repoPath, commit, file, true)
if err != nil {
return nil, err
}
r := &blameResult{
FaultyIgnoreRevsFile: true,
}
if err := fillBlameResult(blameReader, r); err != nil {
_ = blameReader.Close()
return nil, err
}
return r, blameReader.Close()
}
return nil, err
}
return r, nil
}
func fillBlameResult(br *git.BlameReader, r *blameResult) error {
r.UsesIgnoreRevs = br.UsesIgnoreRevs()
previousHelper := make(map[string]*git.BlamePart)
r.Parts = make([]*git.BlamePart, 0, 5)
for {
blamePart, err := br.NextPart()
if err != nil {
return fmt.Errorf("BlameReader.NextPart failed: %w", err)
}
if blamePart == nil {
break
}
if prev, ok := previousHelper[blamePart.Sha]; ok {
if blamePart.PreviousSha == "" {
blamePart.PreviousSha = prev.PreviousSha
blamePart.PreviousPath = prev.PreviousPath
}
} else {
previousHelper[blamePart.Sha] = blamePart
}
r.Parts = append(r.Parts, blamePart)
}
return nil
}
func processBlameParts(ctx *context.Context, blameParts []*git.BlamePart) map[string]*user_model.UserCommit {
// store commit data by SHA to look up avatar info etc
commitNames := make(map[string]*user_model.UserCommit)
// and as blameParts can reference the same commits multiple
// times, we cache the lookup work locally
commits := make([]*git.Commit, 0, len(blameParts))
commitCache := map[string]*git.Commit{}
commitCache[ctx.Repo.Commit.ID.String()] = ctx.Repo.Commit
for _, part := range blameParts {
sha := part.Sha
if _, ok := commitNames[sha]; ok {
continue
}
// find the blamePart commit, to look up parent & email address for avatars
commit, ok := commitCache[sha]
var err error
if !ok {
commit, err = ctx.Repo.GitRepo.GetCommit(sha)
if err != nil {
if git.IsErrNotExist(err) {
ctx.NotFound("Repo.GitRepo.GetCommit", err)
} else {
ctx.ServerError("Repo.GitRepo.GetCommit", err)
}
return nil
}
commitCache[sha] = commit
}
commits = append(commits, commit)
}
// populate commit email addresses to later look up avatars.
for _, c := range user_model.ValidateCommitsWithEmails(ctx, commits) {
commitNames[c.ID.String()] = c
}
return commitNames
}
func renderBlame(ctx *context.Context, blameParts []*git.BlamePart, commitNames map[string]*user_model.UserCommit) {
repoLink := ctx.Repo.RepoLink
language, err := files_service.TryGetContentLanguage(ctx.Repo.GitRepo, ctx.Repo.CommitID, ctx.Repo.TreePath)
if err != nil {
log.Error("Unable to get file language for %-v:%s. Error: %v", ctx.Repo.Repository, ctx.Repo.TreePath, err)
}
lines := make([]string, 0)
rows := make([]*blameRow, 0)
escapeStatus := &charset.EscapeStatus{}
var lexerName string
avatarUtils := templates.NewAvatarUtils(ctx)
i := 0
commitCnt := 0
for _, part := range blameParts {
for index, line := range part.Lines {
i++
lines = append(lines, line)
br := &blameRow{
RowNumber: i,
}
commit := commitNames[part.Sha]
if index == 0 {
// Count commit number
commitCnt++
// User avatar image
commitSince := timeutil.TimeSinceUnix(timeutil.TimeStamp(commit.Author.When.Unix()), ctx.Locale)
var avatar string
if commit.User != nil {
avatar = string(avatarUtils.Avatar(commit.User, 18, "gt-mr-3"))
} else {
avatar = string(avatarUtils.AvatarByEmail(commit.Author.Email, commit.Author.Name, 18, "gt-mr-3"))
}
br.Avatar = gotemplate.HTML(avatar)
br.RepoLink = repoLink
br.PartSha = part.Sha
br.PreviousSha = part.PreviousSha
br.PreviousShaURL = fmt.Sprintf("%s/blame/commit/%s/%s", repoLink, url.PathEscape(part.PreviousSha), util.PathEscapeSegments(part.PreviousPath))
br.CommitURL = fmt.Sprintf("%s/commit/%s", repoLink, url.PathEscape(part.Sha))
br.CommitMessage = commit.CommitMessage
br.CommitSince = commitSince
}
if i != len(lines)-1 {
line += "\n"
}
fileName := fmt.Sprintf("%v", ctx.Data["FileName"])
line, lexerNameForLine := highlight.Code(fileName, language, line)
// set lexer name to the first detected lexer. this is certainly suboptimal and
// we should instead highlight the whole file at once
if lexerName == "" {
lexerName = lexerNameForLine
}
br.EscapeStatus, br.Code = charset.EscapeControlHTML(line, ctx.Locale)
rows = append(rows, br)
escapeStatus = escapeStatus.Or(br.EscapeStatus)
}
}
ctx.Data["EscapeStatus"] = escapeStatus
ctx.Data["BlameRows"] = rows
ctx.Data["CommitCnt"] = commitCnt
ctx.Data["LexerName"] = lexerName
}