枚举 Go (Golang) 中的注册表值

package main

import (
    "fmt"
    "log"
    "strconv"
    "strings"

    "golang.org/x/sys/windows/registry"
)

const regKey = `SOFTWARE\Microsoft\Windows NT\CurrentVersion`

func getSettingsFromRegistry() (settings map[string]string, error) {
    settings = make(map[string]string)

    k, err := registry.OpenKey(registry.LOCAL_MACHINE, regKey, registry.QUERY_VALUE)
    if err != nil {
        return nil, fmt.Errorf("open registry key %q: %w", regKey, err)
    }
    defer k.Close()

    params, err := k.ReadValueNames(0)
    if err != nil {
        return nil, fmt.Errorf("read value names %q: %w", regKey, err)
    }

    for _, param := range params {
        val, err := getRegistryValueAsString(k, param)
        if err != nil {
            return nil, fmt.Errorf("get value as string %q: %w", param, err)
        }
        settings[param] = val
    }

    log.Printf("%#v\n", settings)
    return settings, nil
}

func getRegistryValueAsString(key registry.Key, subKey string) (string, error) {
    valString, _, err := key.GetStringValue(subKey)
    if err == nil {
        return valString, nil
    }
    valStrings, _, err := key.GetStringsValue(subKey)
    if err == nil {
        return strings.Join(valStrings, "\n"), nil
    }
    valBinary, _, err := key.GetBinaryValue(subKey)
    if err == nil {
        return string(valBinary), nil
    }
    valInteger, _, err := key.GetIntegerValue(subKey)
    if err == nil {
        return strconv.FormatUint(valInteger, 10), nil
    }

    return "", fmt.Errorf("failed to get type for sub key %q", subKey)
}

func main() {
    settings, err := getSettingsFromRegistry()
    if err != nil {
        log.Fatalf("Failed to get settings from registry: %v", err)
    }

    for key, value := range settings {
        fmt.Printf("%s: %s\n", key, value)
    }
}