/// <summary>
/// Excute the request and response the needes content
/// <para>Save the response in the Output cach for next requests</para>
/// </summary>
/// <param name="context"></param>
/// <param name="absoluteFiles"></param>
/// <param name="minify"></param>
/// <param name="versionHash"></param>
/// <param name="encodingMgr"></param>
public void Excute(HttpContext context, string[] absoluteFiles, Minifier minify, int versionHash, EncodingManager encodingMgr)
{
context.Response.Write(SR.GetString(SR.CREDIT_STRING));
List<string> exsitingFiles = new List<string>();
for (int i = 0; i < absoluteFiles.Length; i++)
{
WriteContent(context, GetFileContent(absoluteFiles[i], minify, exsitingFiles));
}
SetResponseCacheSettings(context, exsitingFiles.ToArray());
if (encodingMgr.IsEncodingEnabled)
{
encodingMgr.CompressResponse();
encodingMgr.SetResponseEncodingType();
}
}
/// <summary>
/// Process the request
/// </summary>
/// <param name="context"></param>
public virtual void ProcessRequest(HttpContext context)
{
int versionHash;
DateTime lastUpdate;
string[] relativeFiles = context.Request.QueryString["d"].Split(',');
string[] absoluteFiles = GetFilesInfo(relativeFiles,context, out versionHash,out lastUpdate);
context.Response.Clear();
SetHeaders(context, lastUpdate, versionHash);
CheckETag(context, versionHash);
Minifier currentMinifier = new Minifier(Minify);
EncodingManager encodingMgr = new EncodingManager(context);
if (!IsCompressContent())
{
encodingMgr.PreferredEncodingType = EncodingManager.EncodingType.None;
}
Settings.Instance.CurrentStorage.Excute(context, absoluteFiles, currentMinifier, versionHash, encodingMgr);
}
/// <summary>
/// Handles the PostReleaseRequestState event.
/// </summary>
/// <param name="sender">The object that raised the event (HttpApplication)</param>
/// <param name="e">The event data</param>
void OnPostReleaseRequestState(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;
if (app.Context == null)
return;
// This part of the module compress only handlers from type System.Web.UI.Page
// Other types such JavaScript or CSS files will be compressed in an httpHandelr.
// Here we check if the current handler if a Page, if so, we compress it.
if (app.Context.CurrentHandler is System.Web.UI.Page && app.Context.Response != null && Util.IsUIPageContentType(app.Context.Response.ContentType))
{
// Check if the path is not excluded.
if (!settings.IsValidPath(app.Request.AppRelativeCurrentExecutionFilePath))
return;
// Check if the mime type is not ecluded. (Use to exclude pages that generate specific mime type (such image or Excel...))
if (!settings.IsValidType(app.Response.ContentType))
return;
// Because there is a problem with async postbacks compression, we check here if the current request if an 'MS AJAX' call.
// If so, we will not compress it.
if (settings.CompressPage && !(Util.IsMsAjaxRequest(app.Context) && settings.MSAjaxVersion < 3.5))
{
EncodingManager encodingMgr = new EncodingManager(app.Context);
if (encodingMgr.IsEncodingEnabled)
{
encodingMgr.CompressResponse();
encodingMgr.SetResponseEncodingType();
}
}
if (settings.AutoMode)
{
bool processCss = settings.CompressCSS || settings.MinifyContent;
bool processJs = settings.CompressJavaScript || settings.MinifyContent;
app.Response.Filter = new AutoModeFilterStream(app.Response.Filter,app.Response.ContentEncoding, processJs,processCss);
}
}
}
/// <summary>
/// Handles the PreRequestHandlerExecute event.
/// The compression moved to this step to catch Server.Transfer operation
/// </summary>
/// <param name="sender">The object that raised the event (HttpApplication)</param>
/// <param name="e">The event data</param>
void context_PreRequestHandlerExecute(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;
if (app.Context == null || app.Context.Response == null)
return;
// This part of the module compress only handlers from type System.Web.UI.Page
// Other types such JavaScript or CSS files will be compressed in an httpHandelr.
// Here we check if the current handler if a Page handler, if so, we compress it.
if (app.Context.CurrentHandler is System.Web.UI.Page && app.Context.Response != null)
{
// Check if the path is not excluded.
if (!settings.IsValidPath(app.Request.AppRelativeCurrentExecutionFilePath))
return;
if (Util.IsToolkitScriptManagerCombiner(app.Request))
return;
if (settings.CompressPage && !Util.IsContainExcludedParamValue(app.Context) && !(Util.IsMsAjaxRequest(app.Context) && settings.MSAjaxVersion < 3.5))
{
EncodingManager encodingMgr = new EncodingManager(app.Context);
if (encodingMgr.IsEncodingEnabled)
{
// Add preferredEncoding to the context.items for use later in the pipeline
app.Context.Items.Add("preferredEncoding", encodingMgr.PreferredEncoding);
//Add the compression filter
encodingMgr.CompressResponse();
}
}
if (settings.AutoMode && !Util.IsMsAjaxRequest(app.Context))
{
bool processCss = settings.CompressCSS || settings.MinifyContent || settings.CombineCSS;
bool processJs = settings.CompressJavaScript || settings.MinifyContent;
app.Response.Filter = new AutoModeFilterStream(app.Response.Filter, app.Response.ContentEncoding, processJs, processCss, settings.CombineCSS, settings.CombineHeaderScripts);
}
}
}
private void OnPreRequestHandlerExecute(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;
// Check if the current request is Webresource.axd
if (app.Context.CurrentHandler is AssemblyResourceLoader)
{
HttpResponse response = app.Context.Response;
int queryHash = (app.Context.Request.QueryString.ToString()).GetHashCode();
// Check if the ETag is match. If so, we don't send nothing to the client, and stop here.
CheckETag(app, queryHash);
try
{
// Parse the QueryString into parts
Quadruplet<Char, String, String, String> urlInfo = GetDataFromQuery(app.Context.Request.QueryString);
// Load the assembly
Assembly assembly = GetAssembly(urlInfo.First, urlInfo.Second);
if (assembly == null)
ThrowHttpException(404, SR.WebResourceCompressionModule_AssemblyNotFound, urlInfo.Forth);
// Get the resource info from assembly.
Quadruplet<bool, bool, string, bool> resourceInfo = GetResourceInfo(assembly, urlInfo.Third);
if (!resourceInfo.First)
ThrowHttpException(404, SR.WebResourceCompressionModule_AssemblyNotFound, urlInfo.Forth);
// If the WebResource needs to perform substitution (WebResource inside WebResource), we leave it to the original AssemblyResourceLoader handler ;-)
if (resourceInfo.Second)
return;
response.Clear();
// Set the response cache headers
SetCachingHeadersForWebResource(response.Cache, queryHash);
// Set the response content type
response.ContentType = resourceInfo.Third;
EncodingManager encodingMgr = new EncodingManager(app.Context);
// Write content with compression
if (resourceInfo.Forth && (Settings.Instance.CompressWebResource || Settings.Instance.MinifyContent))
{
using (StreamReader resourceStream = new StreamReader(assembly.GetManifestResourceStream(urlInfo.Third), true))
{
ProcessAndWriteToStream(resourceStream, app.Context, encodingMgr);
}
}
// Write content without compression or minify
else
{
using (Stream resourceStream = assembly.GetManifestResourceStream(urlInfo.Third))
{
WriteToStream(resourceStream, response.OutputStream);
}
}
response.OutputStream.Flush();
app.CompleteRequest();
}
catch (ArgumentNullException)
{
return;
}
catch (TargetInvocationException)
{
return;
}
catch (System.Security.Cryptography.CryptographicException)
{
return;
}
}
}
/// <summary>
/// Process & Write a StreamReader to an output stream
/// </summary>
/// <param name="reader"></param>
/// <param name="context"></param>
/// <param name="encodingMgr"></param>
private static void ProcessAndWriteToStream(StreamReader reader, HttpContext context, EncodingManager encodingMgr)
{
string content = SR.GetString(SR.CREDIT_STRING);
if (Settings.Instance.MinifyContent)
{
if (context.Response.ContentType.Contains("javascript"))
{
JavaScriptMinifier _Minifier = new JavaScriptMinifier();
content += _Minifier.Minify(reader);
}
else if (context.Response.ContentType.Contains("css"))
{
CssMinifier _Minifier = new CssMinifier();
content += _Minifier.Minify(reader);
}
else
{
content += reader.ReadToEnd();
}
}
else
{
content += reader.ReadToEnd();
}
if (encodingMgr.IsEncodingEnabled && Settings.Instance.CompressWebResource)
{
encodingMgr.SetResponseEncodingType();
byte[] compressed = encodingMgr.CompressString(content);
context.Response.OutputStream.Write(compressed, 0, compressed.Length);
}
else
{
context.Response.Write(content);
}
}
/// <summary>
/// Excute the request and response the needes content
/// <para>Save the response in the file system for next requests</para>
/// </summary>
/// <param name="context"></param>
/// <param name="filesInfo"></param>
/// <param name="minify"></param>
/// <param name="versionHash"></param>
/// <param name="encodingMgr"></param>
public void Excute(HttpContext context, string[] filesInfo, Minifier minify, int versionHash, EncodingManager encodingMgr)
{
string phisicalRoot = context.Server.MapPath("~/") + cReferencesCache;
string fullPath;
if (encodingMgr.IsEncodingEnabled)
{
fullPath = phisicalRoot + "comp_" + encodingMgr.PreferredEncoding + "_" + versionHash + (minify.Target is JavaScriptCompressionHandler ? ".js" : ".css");
encodingMgr.SetResponseEncodingType();
}
else
{
fullPath = phisicalRoot + versionHash + (minify.Target is JavaScriptCompressionHandler ? ".js" : ".css");
}
SetResponseCacheSettings(context, null);
if (!File.Exists(fullPath))
{
lock (_syncObject)
{
if (!File.Exists(fullPath))
{
if (!Directory.Exists(phisicalRoot))
{
Directory.CreateDirectory(phisicalRoot);
}
if (encodingMgr.IsEncodingEnabled)
{
StringBuilder contentSb = new StringBuilder(SR.GetString(SR.CREDIT_STRING));
foreach (string fileName in filesInfo)
{
if (fileName.StartsWith("NOT_FOUND", StringComparison.Ordinal))
{
contentSb.AppendFormat(SR.File_FileNotFound + Environment.NewLine, Path.GetFileName(fileName.Split('|')[1]));
}
else
{
using (StreamReader reader = new StreamReader(fileName, context.Response.ContentEncoding))
{
if (Settings.Instance.IsValidPathForMinify(fileName))
{
contentSb.AppendLine(minify(reader));
}
else
{
contentSb.AppendLine(reader.ReadToEnd());
}
}
}
}
using (FileStream fs = new FileStream(fullPath, FileMode.Create))
{
byte[] compressedContent = encodingMgr.CompressString(contentSb.ToString());
fs.Write(compressedContent, 0, compressedContent.Length);
}
// Release the StringBuilder
contentSb.Length = 0;
}
else
{
using (FileStream fs = new FileStream(fullPath, FileMode.Create))
using (StreamWriter sw = new StreamWriter(fs,context.Response.ContentEncoding))
{
string content = SR.GetString(SR.CREDIT_STRING);
sw.WriteLine(content);
foreach (string fileName in filesInfo)
{
if (fileName.Length == 0)
{
content = string.Format(CultureInfo.CurrentCulture, SR.File_FileNotFound, Path.GetFileName(fileName));
}
else
{
using (StreamReader reader = new StreamReader(fileName, context.Response.ContentEncoding))
{
if (Settings.Instance.IsValidPathForMinify(fileName))
{
content = minify(reader);
}
else
{
content = reader.ReadToEnd();
}
}
}
sw.WriteLine(content);
}
}
}
}
}
}
context.Response.TransmitFile(fullPath);
}
