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https://github.com/go-gitea/gitea.git
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* Implementation for calculating language statistics Impement saving code language statistics to database Implement rendering langauge stats Add primary laguage to show in repository list Implement repository stats indexer queue Add indexer test Refactor to use queue module * Do not timeout for queues
174 lines
4.6 KiB
Go
174 lines
4.6 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package code
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import (
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"strconv"
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"strings"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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)
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type fileUpdate struct {
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Filename string
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BlobSha string
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}
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// repoChanges changes (file additions/updates/removals) to a repo
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type repoChanges struct {
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Updates []fileUpdate
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RemovedFilenames []string
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}
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func getDefaultBranchSha(repo *models.Repository) (string, error) {
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stdout, err := git.NewCommand("show-ref", "-s", git.BranchPrefix+repo.DefaultBranch).RunInDir(repo.RepoPath())
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if err != nil {
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return "", err
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}
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return strings.TrimSpace(stdout), nil
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}
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// getRepoChanges returns changes to repo since last indexer update
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func getRepoChanges(repo *models.Repository, revision string) (*repoChanges, error) {
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status, err := repo.GetIndexerStatus(models.RepoIndexerTypeCode)
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if err != nil {
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return nil, err
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}
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if len(status.CommitSha) == 0 {
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return genesisChanges(repo, revision)
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}
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return nonGenesisChanges(repo, revision)
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}
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func isIndexable(entry *git.TreeEntry) bool {
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if !entry.IsRegular() && !entry.IsExecutable() {
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return false
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}
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name := strings.ToLower(entry.Name())
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for _, g := range setting.Indexer.ExcludePatterns {
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if g.Match(name) {
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return false
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}
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}
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for _, g := range setting.Indexer.IncludePatterns {
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if g.Match(name) {
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return true
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}
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}
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return len(setting.Indexer.IncludePatterns) == 0
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}
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// parseGitLsTreeOutput parses the output of a `git ls-tree -r --full-name` command
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func parseGitLsTreeOutput(stdout []byte) ([]fileUpdate, error) {
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entries, err := git.ParseTreeEntries(stdout)
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if err != nil {
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return nil, err
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}
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var idxCount = 0
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updates := make([]fileUpdate, len(entries))
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for _, entry := range entries {
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if isIndexable(entry) {
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updates[idxCount] = fileUpdate{
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Filename: entry.Name(),
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BlobSha: entry.ID.String(),
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}
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idxCount++
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}
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}
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return updates[:idxCount], nil
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}
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// genesisChanges get changes to add repo to the indexer for the first time
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func genesisChanges(repo *models.Repository, revision string) (*repoChanges, error) {
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var changes repoChanges
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stdout, err := git.NewCommand("ls-tree", "--full-tree", "-r", revision).
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RunInDirBytes(repo.RepoPath())
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if err != nil {
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return nil, err
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}
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changes.Updates, err = parseGitLsTreeOutput(stdout)
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return &changes, err
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}
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// nonGenesisChanges get changes since the previous indexer update
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func nonGenesisChanges(repo *models.Repository, revision string) (*repoChanges, error) {
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diffCmd := git.NewCommand("diff", "--name-status",
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repo.CodeIndexerStatus.CommitSha, revision)
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stdout, err := diffCmd.RunInDir(repo.RepoPath())
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if err != nil {
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// previous commit sha may have been removed by a force push, so
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// try rebuilding from scratch
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log.Warn("git diff: %v", err)
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if err = indexer.Delete(repo.ID); err != nil {
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return nil, err
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}
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return genesisChanges(repo, revision)
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}
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var changes repoChanges
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updatedFilenames := make([]string, 0, 10)
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for _, line := range strings.Split(stdout, "\n") {
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line = strings.TrimSpace(line)
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if len(line) == 0 {
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continue
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}
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fields := strings.Split(line, "\t")
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if len(fields) < 2 {
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log.Warn("Unparseable output for diff --name-status: `%s`)", line)
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continue
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}
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filename := fields[1]
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if len(filename) == 0 {
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continue
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} else if filename[0] == '"' {
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filename, err = strconv.Unquote(filename)
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if err != nil {
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return nil, err
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}
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}
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switch status := fields[0][0]; status {
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case 'M', 'A':
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updatedFilenames = append(updatedFilenames, filename)
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case 'D':
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changes.RemovedFilenames = append(changes.RemovedFilenames, filename)
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case 'R', 'C':
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if len(fields) < 3 {
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log.Warn("Unparseable output for diff --name-status: `%s`)", line)
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continue
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}
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dest := fields[2]
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if len(dest) == 0 {
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log.Warn("Unparseable output for diff --name-status: `%s`)", line)
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continue
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}
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if dest[0] == '"' {
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dest, err = strconv.Unquote(dest)
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if err != nil {
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return nil, err
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}
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}
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if status == 'R' {
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changes.RemovedFilenames = append(changes.RemovedFilenames, filename)
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}
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updatedFilenames = append(updatedFilenames, dest)
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default:
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log.Warn("Unrecognized status: %c (line=%s)", status, line)
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}
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}
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cmd := git.NewCommand("ls-tree", "--full-tree", revision, "--")
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cmd.AddArguments(updatedFilenames...)
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lsTreeStdout, err := cmd.RunInDirBytes(repo.RepoPath())
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if err != nil {
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return nil, err
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}
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changes.Updates, err = parseGitLsTreeOutput(lsTreeStdout)
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return &changes, err
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}
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