public static List <string> getPathList(System.EnvironmentVariableTarget target)
{
List <string> pathList = new List <string>();
string pathStr = System.Environment.GetEnvironmentVariable("Path", target);
if (pathStr == null)
{
return(pathList);
}
pathStr = pathStr.TrimEnd(';');
if (pathStr.Length == 0)
{
return(pathList);
}
string[] pathArray = pathStr.Split(';');
foreach (string path in pathArray)
{
if (path.EndsWith("\\"))
{
pathList.Add(path.TrimEnd('\\'));
}
else
{
pathList.Add(path);
}
}
return(pathList);
}
public static void setPathList(List <string> pathList, System.EnvironmentVariableTarget target)
{
if (pathList.Count == 0)
{
return;
}
System.Environment.SetEnvironmentVariable("Path", System.String.Join(";", pathList) + ";", target);
}
public static string GetEnvironmentVariable(string variable,
System.EnvironmentVariableTarget target)
{
if (target != System.EnvironmentVariableTarget.Process)
{
throw new System.ArgumentException();
}
return(GetEnvironmentVariable(variable));
}
/// <summary>
/// Creates an environment variable by given <paramref name="name"/>, <paramref name="value"/> and optionally - <paramref name="target"/>.
/// </summary>
/// <param name="name">The name of the environment variable.</param>
/// <param name="value">The value of the environment variable.</param>
/// <param name="target">The <see cref="System.EnvironmentVariableTarget"/> of the variable.</param>
internal static void CreateEnvironmentVariable(string name, string value, System.EnvironmentVariableTarget target = System.EnvironmentVariableTarget.User)
{
try
{
System.Environment.SetEnvironmentVariable(name, value, target);
}
catch (System.Exception)
{
Internal.Error($"Cannot create environment variable with name {name} and value {value} due to exception.");
}
}
/// <summary>
/// Find environment variable values with given <paramref name="name"/>.
/// </summary>
/// <param name="name">Name of environment variable.</param>
/// <param name="target">Environment variable target.</param>
/// <returns>Array of results if found, an empty array if not found.</returns>
public static string[] GetAll(string name, System.EnvironmentVariableTarget target = System.EnvironmentVariableTarget.Process)
{
var result = System.Environment.GetEnvironmentVariable(name, target);
if (result == null)
{
return new string[] { }
}
;
return(result.Split(Path.PathSeparator));
}
/// <summary>
/// Find file with given <paramref name="filename"/> in environment <paramref name="envVariable"/>
/// and environment target <paramref name="target"/>.
/// </summary>
/// <param name="filename">Name of file.</param>
/// <param name="envVariable">Environment variable - default: PATH.</param>
/// <param name="target">Environment target to search in.</param>
/// <returns>FileInfo of file with given <paramref name="filename"/> if found - otherwise null.</returns>
public static FileInfo FindFile(string filename,
string envVariable = "PATH",
System.EnvironmentVariableTarget target = System.EnvironmentVariableTarget.Process)
{
var env = GetAll(envVariable, target);
foreach (var path in env)
{
if (File.Exists(path + Path.DirectorySeparatorChar + filename))
{
return(new FileInfo(path + Path.DirectorySeparatorChar + filename));
}
}
return(null);
}
/// <summary>
/// Find environment variable with given <paramref name="name"/>.
/// </summary>
/// <param name="name">Name of environment variable.</param>
/// <param name="target">Environment variable target.</param>
/// <returns>Value the environment variable carries - string.isNullOrEmpty == true if not found.</returns>
public static string Get(string name, System.EnvironmentVariableTarget target = System.EnvironmentVariableTarget.Process)
{
return(GetAll(name, target).FirstOrDefault());
}
