public static string ExtractNativeResource <T>(string resource, ABI abi)
{
var split = resource.Split('.');
var basePath = AppDomain.CurrentDomain.BaseDirectory;
string path;
if (!abi.IsWindows())
{
// On Windows, LoadLibrary makes it available for DllImport
// regardless of the location. On Linux, we need to
// set LD_LIBRARY_PATH which is not possible to do from
// already running app that needs it. Extracting to the current
// directory is the simplest thing:
// - we do not support WoW64-like thing on Linux even if it exists, only 64 bit on Linux so far
// - location should be writable, while /usr/lib and /usr/local/lib are not writeable
// - on Windows there was IIS issue - it was reloading every time content changed,
// that is why we used temp folder.
// TODO currently need <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
// otherwise managed dll is in NuGet folder, while native is extracted into local bin
// folder. This flag is consistent with donet publish behavior that will place all
// dlls in one place, so it's OK for now.
path = Path.Combine(basePath, split[2] + "." + split[3]);
if (File.Exists(path))
{
return(path);
}
}
else
{
// On Windows same manages dll could be run from both x32/x64
// but LoadLibrary makes P/Invoke "just work" (TM)
basePath = Path.Combine(basePath, split[1]);
if (!Directory.Exists(basePath))
{
Directory.CreateDirectory(basePath);
}
path = Path.Combine(basePath, split[2] + "." + split[3]);
if (File.Exists(path))
{
return(path);
}
}
try
{
using (Stream resourceStream = GetResourceStream <T>(resource))
{
using (DeflateStream deflateStream = new DeflateStream(resourceStream, CompressionMode.Decompress))
{
using (
FileStream fileStream = new FileStream(path, FileMode.Create, FileAccess.Write,
FileShare.ReadWrite))
{
byte[] buffer = new byte[1048576];
int bytesRead;
do
{
bytesRead = deflateStream.Read(buffer, 0, buffer.Length);
if (bytesRead != 0)
{
fileStream.Write(buffer, 0, bytesRead);
}
}while (bytesRead != 0);
}
}
}
return(path);
}
catch (Exception ex)
{
Trace.TraceError(ex.ToString());
File.Delete(path);
return(null);
}
}
