722a7c902d
In investigating #7947 it has become clear that the storage component of go-git repositories needs closing. This PR adds this Close function and adds the Close functions as necessary. In TransferOwnership the ctx.Repo.GitRepo is closed if it is open to help prevent the risk of multiple open files. Fixes #7947
125 lines
2.5 KiB
Go
125 lines
2.5 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 git
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import (
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"bufio"
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"fmt"
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"io"
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"os"
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"os/exec"
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"regexp"
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"code.gitea.io/gitea/modules/process"
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)
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// BlamePart represents block of blame - continuous lines with one sha
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type BlamePart struct {
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Sha string
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Lines []string
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}
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// BlameReader returns part of file blame one by one
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type BlameReader struct {
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cmd *exec.Cmd
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pid int64
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output io.ReadCloser
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scanner *bufio.Scanner
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lastSha *string
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}
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var shaLineRegex = regexp.MustCompile("^([a-z0-9]{40})")
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// NextPart returns next part of blame (sequencial code lines with the same commit)
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func (r *BlameReader) NextPart() (*BlamePart, error) {
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var blamePart *BlamePart
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scanner := r.scanner
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if r.lastSha != nil {
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blamePart = &BlamePart{*r.lastSha, make([]string, 0)}
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}
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for scanner.Scan() {
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line := scanner.Text()
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// Skip empty lines
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if len(line) == 0 {
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continue
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}
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lines := shaLineRegex.FindStringSubmatch(line)
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if lines != nil {
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sha1 := lines[1]
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if blamePart == nil {
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blamePart = &BlamePart{sha1, make([]string, 0)}
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}
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if blamePart.Sha != sha1 {
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r.lastSha = &sha1
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return blamePart, nil
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}
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} else if line[0] == '\t' {
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code := line[1:]
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blamePart.Lines = append(blamePart.Lines, code)
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}
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}
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r.lastSha = nil
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return blamePart, nil
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}
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// Close BlameReader - don't run NextPart after invoking that
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func (r *BlameReader) Close() error {
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process.GetManager().Remove(r.pid)
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if err := r.cmd.Wait(); err != nil {
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return fmt.Errorf("Wait: %v", err)
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}
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return nil
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}
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// CreateBlameReader creates reader for given repository, commit and file
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func CreateBlameReader(repoPath, commitID, file string) (*BlameReader, error) {
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gitRepo, err := OpenRepository(repoPath)
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if err != nil {
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return nil, err
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}
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gitRepo.Close()
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return createBlameReader(repoPath, GitExecutable, "blame", commitID, "--porcelain", "--", file)
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}
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func createBlameReader(dir string, command ...string) (*BlameReader, error) {
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cmd := exec.Command(command[0], command[1:]...)
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cmd.Dir = dir
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cmd.Stderr = os.Stderr
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stdout, err := cmd.StdoutPipe()
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if err != nil {
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return nil, fmt.Errorf("StdoutPipe: %v", err)
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}
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if err = cmd.Start(); err != nil {
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return nil, fmt.Errorf("Start: %v", err)
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}
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pid := process.GetManager().Add(fmt.Sprintf("GetBlame [repo_path: %s]", dir), cmd)
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scanner := bufio.NewScanner(stdout)
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return &BlameReader{
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cmd,
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pid,
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stdout,
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scanner,
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nil,
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}, nil
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}
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