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mirror of https://github.com/go-gitea/gitea synced 2024-12-24 01:24:26 +00:00
gitea/modules/git/repo_compare.go
David Svantesson 25531c71a7 Mark PR reviews as stale at push and allow to dismiss stale approvals (#9532)
Fix #5997.

If a push causes the patch/diff of a PR towards target branch to change, all existing reviews for the PR will be set and shown as stale.
New branch protection option to dismiss stale approvals are added.
To show that a review is not based on the latest PR changes, an hourglass is shown
2020-01-09 01:47:45 +00:00

121 lines
3.8 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2019 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 git
import (
"container/list"
"fmt"
"io"
"strconv"
"strings"
"time"
logger "code.gitea.io/gitea/modules/log"
)
// CompareInfo represents needed information for comparing references.
type CompareInfo struct {
MergeBase string
Commits *list.List
NumFiles int
}
// GetMergeBase checks and returns merge base of two branches and the reference used as base.
func (repo *Repository) GetMergeBase(tmpRemote string, base, head string) (string, string, error) {
if tmpRemote == "" {
tmpRemote = "origin"
}
if tmpRemote != "origin" {
tmpBaseName := "refs/remotes/" + tmpRemote + "/tmp_" + base
// Fetch commit into a temporary branch in order to be able to handle commits and tags
_, err := NewCommand("fetch", tmpRemote, base+":"+tmpBaseName).RunInDir(repo.Path)
if err == nil {
base = tmpBaseName
}
}
stdout, err := NewCommand("merge-base", "--", base, head).RunInDir(repo.Path)
return strings.TrimSpace(stdout), base, err
}
// GetCompareInfo generates and returns compare information between base and head branches of repositories.
func (repo *Repository) GetCompareInfo(basePath, baseBranch, headBranch string) (_ *CompareInfo, err error) {
var (
remoteBranch string
tmpRemote string
)
// We don't need a temporary remote for same repository.
if repo.Path != basePath {
// Add a temporary remote
tmpRemote = strconv.FormatInt(time.Now().UnixNano(), 10)
if err = repo.AddRemote(tmpRemote, basePath, false); err != nil {
return nil, fmt.Errorf("AddRemote: %v", err)
}
defer func() {
if err := repo.RemoveRemote(tmpRemote); err != nil {
logger.Error("GetPullRequestInfo: RemoveRemote: %v", err)
}
}()
}
compareInfo := new(CompareInfo)
compareInfo.MergeBase, remoteBranch, err = repo.GetMergeBase(tmpRemote, baseBranch, headBranch)
if err == nil {
// We have a common base
logs, err := NewCommand("log", compareInfo.MergeBase+"..."+headBranch, prettyLogFormat).RunInDirBytes(repo.Path)
if err != nil {
return nil, err
}
compareInfo.Commits, err = repo.parsePrettyFormatLogToList(logs)
if err != nil {
return nil, fmt.Errorf("parsePrettyFormatLogToList: %v", err)
}
} else {
compareInfo.Commits = list.New()
compareInfo.MergeBase, err = GetFullCommitID(repo.Path, remoteBranch)
if err != nil {
compareInfo.MergeBase = remoteBranch
}
}
// Count number of changed files.
stdout, err := NewCommand("diff", "--name-only", remoteBranch+"..."+headBranch).RunInDir(repo.Path)
if err != nil {
return nil, err
}
compareInfo.NumFiles = len(strings.Split(stdout, "\n")) - 1
return compareInfo, nil
}
// GetDiffOrPatch generates either diff or formatted patch data between given revisions
func (repo *Repository) GetDiffOrPatch(base, head string, w io.Writer, formatted bool) error {
if formatted {
return repo.GetPatch(base, head, w)
}
return repo.GetDiff(base, head, w)
}
// GetDiff generates and returns patch data between given revisions.
func (repo *Repository) GetDiff(base, head string, w io.Writer) error {
return NewCommand("diff", "-p", "--binary", base, head).
RunInDirPipeline(repo.Path, w, nil)
}
// GetPatch generates and returns format-patch data between given revisions.
func (repo *Repository) GetPatch(base, head string, w io.Writer) error {
return NewCommand("format-patch", "--binary", "--stdout", base+"..."+head).
RunInDirPipeline(repo.Path, w, nil)
}
// GetDiffFromMergeBase generates and return patch data from merge base to head
func (repo *Repository) GetDiffFromMergeBase(base, head string, w io.Writer) error {
return NewCommand("diff", "-p", "--binary", base+"..."+head).
RunInDirPipeline(repo.Path, w, nil)
}