78 lines
2.0 KiB
Go
78 lines
2.0 KiB
Go
package platform
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import (
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"bytes"
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"context"
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"errors"
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"os/exec"
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"strconv"
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"strings"
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"unicode/utf16"
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)
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// CommandError 保存后台命令失败时的原始诊断信息。
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// 服务层会把这些输出映射成稳定错误码，界面再按当前语言展示友好提示。
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type CommandError struct {
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Command string
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Args []string
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ExitCode int
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Output string
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}
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func (e *CommandError) Error() string {
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if strings.TrimSpace(e.Output) != "" {
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return strings.TrimSpace(e.Output)
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}
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if e.ExitCode != 0 {
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return e.Command + " exited with code " + strconv.Itoa(e.ExitCode)
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}
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return e.Command + " failed"
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}
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// RunHidden 在后台执行命令并合并 stdout/stderr。
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// Windows 下由平台文件设置 HideWindow 和 CREATE_NO_WINDOW，避免 Git/WSL 查询弹出终端窗口。
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func RunHidden(ctx context.Context, name string, args ...string) (string, error) {
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cmd := exec.CommandContext(ctx, name, args...)
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configureHidden(cmd)
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var stdout, stderr bytes.Buffer
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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e := cmd.Run()
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out := strings.TrimSpace(strings.ReplaceAll(decodeOutput(stdout.Bytes()), "\x00", ""))
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errOut := strings.TrimSpace(strings.ReplaceAll(decodeOutput(stderr.Bytes()), "\x00", ""))
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if e != nil {
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if out == "" {
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out = errOut
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} else if errOut != "" {
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out += "\n" + errOut
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}
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if out == "" {
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out = e.Error()
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}
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exitCode := -1
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var exit *exec.ExitError
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if errors.As(e, &exit) {
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exitCode = exit.ExitCode()
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}
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return "", &CommandError{Command: name, Args: args, ExitCode: exitCode, Output: out}
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}
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return out, nil
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}
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// DecodeWSLList 兼容部分 Windows 版本返回的 UTF-16LE 发行版列表。
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func DecodeWSLList(b []byte) string { return decodeOutput(b) }
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func decodeOutput(b []byte) string {
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if len(b) >= 2 && (b[1] == 0 || b[0] == 0xff && b[1] == 0xfe) {
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if len(b)%2 != 0 {
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b = b[:len(b)-1]
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}
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u := make([]uint16, 0, len(b)/2)
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for i := 0; i+1 < len(b); i += 2 {
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u = append(u, uint16(b[i])|uint16(b[i+1])<<8)
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}
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return strings.TrimPrefix(string(utf16.Decode(u)), "\ufeff")
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}
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return string(b)
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}
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