mirror of
https://github.com/go-gitea/gitea.git
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96 lines
3.1 KiB
Go
96 lines
3.1 KiB
Go
// Copyright 2025 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package git
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import (
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"context"
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"fmt"
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repo_model "code.gitea.io/gitea/models/repo"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/gitrepo"
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"code.gitea.io/gitea/modules/util"
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)
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// CompareInfo represents needed information for comparing references.
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type CompareInfo struct {
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BaseRepo *repo_model.Repository
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BaseRef git.RefName
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BaseCommitID string
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HeadRepo *repo_model.Repository
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HeadGitRepo *git.Repository
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HeadRef git.RefName
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HeadCommitID string
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DirectComparison bool
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MergeBase string
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Commits []*git.Commit
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NumFiles int
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}
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func (ci *CompareInfo) IsSameRepository() bool {
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return ci.BaseRepo.ID == ci.HeadRepo.ID
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}
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func (ci *CompareInfo) IsSameRef() bool {
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return ci.IsSameRepository() && ci.BaseRef == ci.HeadRef
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}
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// GetCompareInfo generates and returns compare information between base and head branches of repositories.
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func GetCompareInfo(ctx context.Context, baseRepo, headRepo *repo_model.Repository, headGitRepo *git.Repository, baseRef, headRef git.RefName, directComparison, fileOnly bool) (_ *CompareInfo, err error) {
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compareInfo := &CompareInfo{
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BaseRepo: baseRepo,
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BaseRef: baseRef,
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HeadRepo: headRepo,
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HeadGitRepo: headGitRepo,
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HeadRef: headRef,
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DirectComparison: directComparison,
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}
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compareInfo.BaseCommitID, err = gitrepo.GetFullCommitID(ctx, baseRepo, baseRef.String())
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if err != nil {
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return nil, err
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}
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compareInfo.HeadCommitID, err = gitrepo.GetFullCommitID(ctx, headRepo, headRef.String())
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if err != nil {
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return nil, err
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}
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// if they are not the same repository, then we need to fetch the base commit into the head repository
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// because we will use headGitRepo in the following code
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if baseRepo.ID != headRepo.ID {
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if err := gitrepo.FetchRemoteCommit(ctx, headRepo, baseRepo, compareInfo.BaseCommitID); err != nil {
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return nil, fmt.Errorf("FetchRemoteCommit: %w", err)
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}
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}
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if !directComparison {
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compareInfo.MergeBase, err = gitrepo.MergeBase(ctx, headRepo, compareInfo.BaseCommitID, compareInfo.HeadCommitID)
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if err != nil {
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return nil, fmt.Errorf("MergeBase: %w", err)
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}
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} else {
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compareInfo.MergeBase = compareInfo.BaseCommitID
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}
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// We have a common base - therefore we know that ... should work
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if !fileOnly {
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separator := util.Iif(directComparison, "..", "...")
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compareInfo.Commits, err = headGitRepo.ShowPrettyFormatLogToList(ctx, compareInfo.BaseCommitID+separator+compareInfo.HeadCommitID)
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if err != nil {
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return nil, fmt.Errorf("ShowPrettyFormatLogToList: %w", err)
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}
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} else {
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compareInfo.Commits = []*git.Commit{}
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}
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// Count number of changed files.
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// This probably should be removed as we need to use shortstat elsewhere
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// Now there is git diff --shortstat but this appears to be slower than simply iterating with --nameonly
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compareInfo.NumFiles, err = headGitRepo.GetDiffNumChangedFiles(compareInfo.BaseCommitID, compareInfo.HeadCommitID, directComparison)
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if err != nil {
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return nil, err
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}
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return compareInfo, nil
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}
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