初始化

platform/command.go

@@ -0,0 +1,77 @@
+package platform
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"os/exec"
+	"strconv"
+	"strings"
+	"unicode/utf16"
+)
+
+// CommandError 保存后台命令失败时的原始诊断信息。
+// 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。
+type CommandError struct {
+	Command  string
+	Args     []string
+	ExitCode int
+	Output   string
+}
+
+func (e *CommandError) Error() string {
+	if strings.TrimSpace(e.Output) != "" {
+		return strings.TrimSpace(e.Output)
+	}
+	if e.ExitCode != 0 {
+		return e.Command + " exited with code " + strconv.Itoa(e.ExitCode)
+	}
+	return e.Command + " failed"
+}
+
+// RunHidden 在后台执行命令并合并 stdout/stderr。
+// 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。
+func RunHidden(ctx context.Context, name string, args ...string) (string, error) {
+	cmd := exec.CommandContext(ctx, name, args...)
+	configureHidden(cmd)
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+	e := cmd.Run()
+	out := strings.TrimSpace(strings.ReplaceAll(decodeOutput(stdout.Bytes()), "\x00", ""))
+	errOut := strings.TrimSpace(strings.ReplaceAll(decodeOutput(stderr.Bytes()), "\x00", ""))
+	if e != nil {
+		if out == "" {
+			out = errOut
+		} else if errOut != "" {
+			out += "\n" + errOut
+		}
+		if out == "" {
+			out = e.Error()
+		}
+		exitCode := -1
+		var exit *exec.ExitError
+		if errors.As(e, &exit) {
+			exitCode = exit.ExitCode()
+		}
+		return "", &CommandError{Command: name, Args: args, ExitCode: exitCode, Output: out}
+	}
+	return out, nil
+}
+
+// DecodeWSLList 兼容部分 Windows 版本返回的 UTF-16LE 发行版列表。
+func DecodeWSLList(b []byte) string { return decodeOutput(b) }
+
+func decodeOutput(b []byte) string {
+	if len(b) >= 2 && (b[1] == 0 || b[0] == 0xff && b[1] == 0xfe) {
+		if len(b)%2 != 0 {
+			b = b[:len(b)-1]
+		}
+		u := make([]uint16, 0, len(b)/2)
+		for i := 0; i+1 < len(b); i += 2 {
+			u = append(u, uint16(b[i])|uint16(b[i+1])<<8)
+		}
+		return strings.TrimPrefix(string(utf16.Decode(u)), "\ufeff")
+	}
+	return string(b)
+}