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gitea/modules/git/git.go

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Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2017 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 (
"context"
"fmt"
"os/exec"
"runtime"
"strings"
"time"
"code.gitea.io/gitea/modules/process"
"github.com/mcuadros/go-version"
)
// Version return this package's current version
func Version() string {
return "0.4.2"
}
var (
// Debug enables verbose logging on everything.
// This should be false in case Gogs starts in SSH mode.
Debug = false
// Prefix the log prefix
Prefix = "[git-module] "
// GitVersionRequired is the minimum Git version required
GitVersionRequired = "1.7.2"
// GitExecutable is the command name of git
// Could be updated to an absolute path while initialization
GitExecutable = "git"
// DefaultContext is the default context to run git commands in
DefaultContext = context.Background()
gitVersion string
)
func log(format string, args ...interface{}) {
if !Debug {
return
}
fmt.Print(Prefix)
if len(args) == 0 {
fmt.Println(format)
} else {
fmt.Printf(format+"\n", args...)
}
}
// BinVersion returns current Git version from shell.
func BinVersion() (string, error) {
if len(gitVersion) > 0 {
return gitVersion, nil
}
stdout, err := NewCommand("version").Run()
if err != nil {
return "", err
}
fields := strings.Fields(stdout)
if len(fields) < 3 {
return "", fmt.Errorf("not enough output: %s", stdout)
}
// Handle special case on Windows.
i := strings.Index(fields[2], "windows")
if i >= 1 {
gitVersion = fields[2][:i-1]
return gitVersion, nil
}
gitVersion = fields[2]
return gitVersion, nil
}
// SetExecutablePath changes the path of git executable and checks the file permission and version.
func SetExecutablePath(path string) error {
// If path is empty, we use the default value of GitExecutable "git" to search for the location of git.
if path != "" {
GitExecutable = path
}
absPath, err := exec.LookPath(GitExecutable)
if err != nil {
return fmt.Errorf("Git not found: %v", err)
}
GitExecutable = absPath
gitVersion, err := BinVersion()
if err != nil {
return fmt.Errorf("Git version missing: %v", err)
}
if version.Compare(gitVersion, GitVersionRequired, "<") {
return fmt.Errorf("Git version not supported. Requires version > %v", GitVersionRequired)
}
return nil
}
// Init initializes git module
func Init(ctx context.Context) error {
DefaultContext = ctx
// Git requires setting user.name and user.email in order to commit changes.
for configKey, defaultValue := range map[string]string{"user.name": "Gitea", "user.email": "gitea@fake.local"} {
if stdout, stderr, err := process.GetManager().Exec("git.Init(get setting)", GitExecutable, "config", "--get", configKey); err != nil || strings.TrimSpace(stdout) == "" {
// ExitError indicates this config is not set
if _, ok := err.(*exec.ExitError); ok || strings.TrimSpace(stdout) == "" {
if _, stderr, gerr := process.GetManager().Exec("git.Init(set "+configKey+")", "git", "config", "--global", configKey, defaultValue); gerr != nil {
return fmt.Errorf("Failed to set git %s(%s): %s", configKey, gerr, stderr)
}
} else {
return fmt.Errorf("Failed to get git %s(%s): %s", configKey, err, stderr)
}
}
}
// Set git some configurations.
if _, stderr, err := process.GetManager().Exec("git.Init(git config --global core.quotepath false)",
GitExecutable, "config", "--global", "core.quotepath", "false"); err != nil {
return fmt.Errorf("Failed to execute 'git config --global core.quotepath false': %s", stderr)
}
if version.Compare(gitVersion, "2.18", ">=") {
if _, stderr, err := process.GetManager().Exec("git.Init(git config --global core.commitGraph true)",
GitExecutable, "config", "--global", "core.commitGraph", "true"); err != nil {
return fmt.Errorf("Failed to execute 'git config --global core.commitGraph true': %s", stderr)
}
if _, stderr, err := process.GetManager().Exec("git.Init(git config --global gc.writeCommitGraph true)",
GitExecutable, "config", "--global", "gc.writeCommitGraph", "true"); err != nil {
return fmt.Errorf("Failed to execute 'git config --global gc.writeCommitGraph true': %s", stderr)
}
}
if runtime.GOOS == "windows" {
if _, stderr, err := process.GetManager().Exec("git.Init(git config --global core.longpaths true)",
GitExecutable, "config", "--global", "core.longpaths", "true"); err != nil {
return fmt.Errorf("Failed to execute 'git config --global core.longpaths true': %s", stderr)
}
}
return nil
}
// Fsck verifies the connectivity and validity of the objects in the database
func Fsck(ctx context.Context, repoPath string, timeout time.Duration, args ...string) error {
// Make sure timeout makes sense.
if timeout <= 0 {
timeout = -1
}
_, err := NewCommandContext(ctx, "fsck").AddArguments(args...).RunInDirTimeout(timeout, repoPath)
return err
}