public static Action <HttpContextBase> Create(IEnumerable <string> resourceNames, string mediaType, Encoding responseEncoding, bool cacheResponse)
{
Debug.Assert(resourceNames != null);
Debug.AssertStringNotEmpty(mediaType);
return(context =>
{
//
// Set the response headers for indicating the content type
// and encoding (if specified).
//
var response = context.Response;
response.ContentType = mediaType;
if (cacheResponse)
{
response.Cache.SetCacheability(HttpCacheability.Public);
response.Cache.SetExpires(DateTime.MaxValue);
}
if (responseEncoding != null)
{
response.ContentEncoding = responseEncoding;
}
foreach (var resourceName in resourceNames)
{
ManifestResourceHelper.WriteResourceToStream(response.OutputStream, typeof(ManifestResourceHandler), resourceName);
}
});
}
private static string CalculateHash()
{
var memoryStream = new MemoryStream();
foreach (var resourceName in _styleSheetResourceNames)
{
ManifestResourceHelper.WriteResourceToStream(memoryStream, typeof(StyleSheetHelper), resourceName);
}
return(MD5.Create()
.ComputeHash(memoryStream)
.Select(b => b.ToString("x2"))
.ToDelimitedString(string.Empty));
}
public void ProcessRequest(HttpContext context)
{
//
// Set the response headers for indicating the content type
// and encoding (if specified).
//
HttpResponse response = context.Response;
response.ContentType = _contentType;
if (_responseEncoding != null)
{
response.ContentEncoding = _responseEncoding;
}
ManifestResourceHelper.WriteResourceToStream(response.OutputStream, _resourceName);
}
private void InitializeDatabase()
{
string connectionString = ConnectionString;
Debug.AssertStringNotEmpty(connectionString);
string dbFilePath = ConnectionStringHelper.GetDataSourceFilePath(connectionString);
if (File.Exists(dbFilePath))
{
return;
}
//
// Make sure that we don't have multiple instances trying to create the database.
//
lock (_mdbInitializationLock)
{
//
// Just double-check that no other thread has created the database while
// we were waiting for the lock.
//
if (File.Exists(dbFilePath))
{
return;
}
//
// Create a temporary copy of the mkmdb.vbs script.
// We do this in the same directory as the resulting database for security permission purposes.
//
string scriptPath = Path.Combine(Path.GetDirectoryName(dbFilePath), _scriptResourceName);
using (FileStream scriptStream = new FileStream(scriptPath, FileMode.Create, FileAccess.Write, FileShare.None))
{
ManifestResourceHelper.WriteResourceToStream(scriptStream, _scriptResourceName);
}
//
// Run the script file to create the database using batch
// mode (//B), which suppresses script errors and prompts
// from displaying.
//
ProcessStartInfo psi = new ProcessStartInfo(
"cscript", "\"" + scriptPath + "\" \"" + dbFilePath + "\" //B //NoLogo");
psi.UseShellExecute = false; // i.e. CreateProcess
psi.CreateNoWindow = true; // Stay lean, stay mean
try
{
using (Process process = Process.Start(psi))
{
//
// A few seconds should be plenty of time to create the database.
//
TimeSpan tolerance = TimeSpan.FromSeconds(2);
if (!process.WaitForExit((int)tolerance.TotalMilliseconds))
{
//
// but it wasn't, so clean up and throw an exception!
// Realistically, I don't expect to ever get here!
//
process.Kill();
throw new Exception(string.Format(
"The Microsoft Access database creation script took longer than the allocated time of {0} seconds to execute. "
+ "The script was terminated prematurely.",
tolerance.TotalSeconds));
}
if (process.ExitCode != 0)
{
throw new Exception(string.Format(
"The Microsoft Access database creation script failed with exit code {0}.",
process.ExitCode));
}
}
}
finally
{
//
// Clean up after ourselves!!
//
File.Delete(scriptPath);
}
}
}
