// Only for use by ProcessImpl.start()
internal String ToEnvironmentBlock()
{
// Sort Unicode-case-insensitively by name
List <Map_Entry <String, String> > list = new List <Map_Entry <String, String> >(this.EntrySet());
list.Sort(EntryComparator);
StringBuilder sb = new StringBuilder(this.Size() * 30);
int cmp = -1;
// Some versions of MSVCRT.DLL require SystemRoot to be set.
// So, we make sure that it is always set, even if not provided
// by the caller.
const String SYSTEMROOT = "SystemRoot";
foreach (Map_Entry <String, String> e in list)
{
String key = e.Key;
String value = e.Value;
if (cmp < 0 && (cmp = NameComparator.Compare(key, SYSTEMROOT)) > 0)
{
// Not set, so add it here
AddToEnvIfSet(sb, SYSTEMROOT);
}
AddToEnv(sb, key, value);
}
if (cmp < 0)
{
// Got to end of list and still not found
AddToEnvIfSet(sb, SYSTEMROOT);
}
if (sb.Length() == 0)
{
// Environment was empty and SystemRoot not set in parent
sb.Append('\u0000');
}
// Block is double NUL terminated
sb.Append('\u0000');
return(sb.ToString());
}
