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Monorepo for Tangled tangled.org
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Go
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566package gitutil
import ( "bytes" "context" "fmt" "os/exec" "strings" "syscall" "time")
// git runs network work in child processes, so killing only git leaves them running
// WaitDelay stops waits on output held open by git's childrenconst WaitDelay = 10 * time.Second
// Command kills git and its children when ctx is cancelledfunc Command(ctx context.Context, args ...string) *exec.Cmd { return Contain(exec.CommandContext(ctx, "git", args...))}
// Contain is for sandbox-rebuilt commands and direct git binariesfunc Contain(cmd *exec.Cmd) *exec.Cmd { if cmd.SysProcAttr == nil { cmd.SysProcAttr = &syscall.SysProcAttr{} } cmd.SysProcAttr.Setpgid = true cmd.WaitDelay = WaitDelay // exec rejects Cancel on commands not created with CommandContext if cmd.Cancel != nil { cmd.Cancel = func() error { if cmd.Process == nil { return nil } err := syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL) if err == syscall.ESRCH { return nil } return err } } return cmd}
func Run(ctx context.Context, args ...string) error { var stderr bytes.Buffer cmd := Command(ctx, args...) cmd.Stderr = &stderr if err := cmd.Run(); err != nil { return fmt.Errorf("%w: %s", err, strings.TrimSpace(stderr.String())) } return nil}
func Output(ctx context.Context, args ...string) ([]byte, error) { var stdout, stderr bytes.Buffer cmd := Command(ctx, args...) cmd.Stdout = &stdout cmd.Stderr = &stderr if err := cmd.Run(); err != nil { return nil, fmt.Errorf("%w: %s", err, strings.TrimSpace(stderr.String())) } return stdout.Bytes(), nil}