// Copyright 2022 The Gitea Authors. All rights reserved.// SPDX-License-Identifier: MIT package process import (	"bytes"	"context"	"io"	"os/exec"	"time") // Exec a command and use the default timeout.func (pm *Manager) Exec(desc, cmdName string, args ...string) (string, string, error) {	return pm.ExecDir(DefaultContext, -1, "", desc, cmdName, args...)} // ExecTimeout a command and use a specific timeout duration.func (pm *Manager) ExecTimeout(timeout time.Duration, desc, cmdName string, args ...string) (string, string, error) {	return pm.ExecDir(DefaultContext, timeout, "", desc, cmdName, args...)} // ExecDir a command and use the default timeout.func (pm *Manager) ExecDir(ctx context.Context, timeout time.Duration, dir, desc, cmdName string, args ...string) (string, string, error) {	return pm.ExecDirEnv(ctx, timeout, dir, desc, nil, cmdName, args...)} // ExecDirEnv runs a command in given path and environment variables, and waits for its completion// up to the given timeout (or DefaultTimeout if -1 is given).// Returns its complete stdout and stderr// outputs and an error, if any (including timeout)func (pm *Manager) ExecDirEnv(ctx context.Context, timeout time.Duration, dir, desc string, env []string, cmdName string, args ...string) (string, string, error) {	return pm.ExecDirEnvStdIn(ctx, timeout, dir, desc, env, nil, cmdName, args...)} // ExecDirEnvStdIn runs a command in given path and environment variables with provided stdIN, and waits for its completion// up to the given timeout (or DefaultTimeout if timeout <= 0 is given).// Returns its complete stdout and stderr// outputs and an error, if any (including timeout)func (pm *Manager) ExecDirEnvStdIn(ctx context.Context, timeout time.Duration, dir, desc string, env []string, stdIn io.Reader, cmdName string, args ...string) (string, string, error) {	if timeout <= 0 {		timeout = 60 * time.Second	} 	stdOut := new(bytes.Buffer)	stdErr := new(bytes.Buffer) 	ctx, _, finished := pm.AddContextTimeout(ctx, timeout, desc)	defer finished() 	cmd := exec.CommandContext(ctx, cmdName, args...)	cmd.Dir = dir	cmd.Env = env	cmd.Stdout = stdOut	cmd.Stderr = stdErr	if stdIn != nil {		cmd.Stdin = stdIn	}	SetSysProcAttribute(cmd) 	if err := cmd.Start(); err != nil {		return "", "", err	} 	err := cmd.Wait()	if err != nil {		err = &Error{			PID:         GetPID(ctx),			Description: desc,			Err:         err,			CtxErr:      ctx.Err(),			Stdout:      stdOut.String(),			Stderr:      stdErr.String(),		}	} 	return stdOut.String(), stdErr.String(), err}