/// <summary>
/// Reads WSL-related information from a registry key and returns it as a model object.
/// </summary>
/// <param name="lxssKey">Registry key from which to read information.</param>
/// <param name="keyName">The GUID name under the LXSS registry key.</param>
/// <param name="parsedDefaultGuid">Default distribution's GUID key as recorded in the LXSS registry key.</param>
/// <returns>Returns the WSL distribution information obtained through registry information.</returns>
private static DistroRegistryInfo ReadFromRegistryKey(RegistryKey lxssKey, string keyName, Guid?parsedDefaultGuid)
{
if (!Guid.TryParse(keyName, out Guid parsedGuid))
{
return(null);
}
using (var distroKey = lxssKey.OpenSubKey(keyName))
{
var distroName = distroKey.GetValue("DistributionName", default(string)) as string;
if (string.IsNullOrWhiteSpace(distroName))
{
return(null);
}
var basePath = distroKey.GetValue("BasePath", default(string)) as string;
var normalizedPath = Path.GetFullPath(basePath);
var kernelCommandLine = (distroKey.GetValue("KernelCommandLine", default(string)) as string ?? string.Empty);
var result = new DistroRegistryInfo()
{
DistroId = parsedGuid,
DistroName = distroName,
BasePath = normalizedPath,
};
result.KernelCommandLine.AddRange(kernelCommandLine.Split(
new char[] { ' ', '\t', },
StringSplitOptions.RemoveEmptyEntries));
if (parsedDefaultGuid.HasValue && parsedDefaultGuid == parsedGuid)
{
result.IsDefault = true;
return(result);
}
}
return(null);
}
/// <summary>
/// Execute the specified command through the default shell of a specific WSL distribution, and get the result as a System.IO.Stream object.
/// </summary>
/// <param name="distroInfo">The WSL distribution on which to run the command.</param>
/// <param name="commandLine">The command you want to run.</param>
/// <param name="outputStream">The System.IO.Stream object to receive the results. It must be writable.</param>
/// <param name="bufferLength">Specifies the size of the buffer array to use when copying from anonymous pipes to the underlying stream. You do not need to specify a value.</param>
/// <returns>Returns the sum of the number of bytes received.</returns>
public static long RunWslCommand(this DistroRegistryInfo distroInfo, string commandLine, Stream outputStream, int bufferLength = 65535)
{
return(Wsl.RunWslCommand(distroInfo.DistroName, commandLine, outputStream, bufferLength));
}
