// Helper function to handle common scenario of translating a remote
// unmanaged char/wchar buffer in to a managed string object.
internal bool ReadString(out string str, int maxLength)
{
// Clear the return string
str = null;
// Ensure there is a buffer size
if (0 >= maxLength)
{
return(false);
}
// Ensure proper allocation
using (SafeCoTaskMem ptr = new SafeCoTaskMem(maxLength))
{
if (ptr.IsInvalid)
{
return(false);
}
// Copy remote buffer back to local process...
ReadFrom(ptr, new IntPtr(maxLength * sizeof(char)));
// Convert the local unmanaged buffer in to a string object
str = ptr.GetStringUni(maxLength);
// Note: lots of "old world" strings are null terminated
// Leaving the null termination in the System.String may lead
// to some issues when used with the StringBuilder
int nullTermination = str.IndexOf('\0');
if (-1 != nullTermination)
{
// We need to strip null terminated char and everything behind it from the str
str = str.Remove(nullTermination, maxLength - nullTermination);
}
return(true);
}
}
// Helper function to handle common scenario of translating a remote
// unmanaged char/wchar buffer in to a managed string object.
internal bool ReadString (out string str, int maxLength)
{
// Clear the return string
str = null;
// Ensure there is a buffer size
if (0 >= maxLength)
{
return false;
}
// Ensure proper allocation
using (SafeCoTaskMem ptr = new SafeCoTaskMem(maxLength))
{
if (ptr.IsInvalid)
{
return false;
}
// Copy remote buffer back to local process...
ReadFrom(ptr, new IntPtr(maxLength * sizeof (char)));
// Convert the local unmanaged buffer in to a string object
str = ptr.GetStringUni(maxLength);
// Note: lots of "old world" strings are null terminated
// Leaving the null termination in the System.String may lead
// to some issues when used with the StringBuilder
int nullTermination = str.IndexOf('\0');
if (-1 != nullTermination)
{
// We need to strip null terminated char and everything behind it from the str
str = str.Remove(nullTermination, maxLength - nullTermination);
}
return true;
}
}
