forgejo/routers/web/repo/blame.go
Giteabot 1f8d01c74d
Use information from previous blame parts (#28572) (#28577)
Backport #28572 by @KN4CK3R

Fixes #28545

`git blame` output can contain blocks without commit information if it
was outputted before (the `0dafa97ea3f6d9662299579e5be1875cd28baaae 48
26 1` line):
```
fec25436488499df7231f63b857f66457c193d5c 24 25 1
author Bastien Montagne
author-mail <bastien@blender.org>
author-time 1660731031
author-tz +0200
committer Bastien Montagne
committer-mail <bastien@blender.org>
committer-time 1660731031
committer-tz +0200
summary LibOverride: Add Make/Reset/Clear entries to IDTemplate contextual menu.
previous 839ece6477203382b7a7483062961540180ff1cd source/blender/editors/interface/interface_ops.c
filename source/blender/editors/interface/interface_ops.c
        #include "BLT_translation.h"
0dafa97ea3f6d9662299579e5be1875cd28baaae 48 26 1

3d57bc4397fca53bc9702a27bbf50102827829b0 27 27 1
author Hans Goudey
author-mail <hans@blender.org>
author-time 1700131315
author-tz +0100
committer Hans Goudey
committer-mail <hooglyboogly@noreply.localhost>
committer-time 1700131315
committer-tz +0100
summary Cleanup: Move several blenkernel headers to C++
previous 451c054d9b7d3148a646caa5a72fb127a5b5c408 source/blender/editors/interface/interface_ops.cc
filename source/blender/editors/interface/interface_ops.cc
        #include "BKE_context.hh"
```
This PR reuses data from the previous blame part to fill these gaps.

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
(cherry picked from commit 1183002b32)
2023-12-22 12:10:03 +01:00

335 lines
8.7 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"
)
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) {
blameReader, err := git.CreateBlameReader(ctx, 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, 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 := ""
indexFilename, worktree, deleteTemporaryFile, err := ctx.Repo.GitRepo.ReadTreeToTemporaryIndex(ctx.Repo.CommitID)
if err == nil {
defer deleteTemporaryFile()
filename2attribute2info, err := ctx.Repo.GitRepo.CheckAttribute(git.CheckAttributeOpts{
CachedOnly: true,
Attributes: []string{"linguist-language", "gitlab-language"},
Filenames: []string{ctx.Repo.TreePath},
IndexFile: indexFilename,
WorkTree: worktree,
})
if err != nil {
log.Error("Unable to load attributes for %-v:%s. Error: %v", ctx.Repo.Repository, ctx.Repo.TreePath, err)
}
language = filename2attribute2info[ctx.Repo.TreePath]["linguist-language"]
if language == "" || language == "unspecified" {
language = filename2attribute2info[ctx.Repo.TreePath]["gitlab-language"]
}
if language == "unspecified" {
language = ""
}
}
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
}