682 lines
21 KiB
C#
682 lines
21 KiB
C#
//
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// System.Web.UI.PageParser
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//
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// Authors:
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// Gonzalo Paniagua Javier (gonzalo@ximian.com)
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//
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// (C) 2002,2003 Ximian, Inc (http://www.ximian.com)
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// Copyright (C) 2005-2010 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Collections;
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using System.Collections.Specialized;
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using System.Globalization;
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using System.Security.Permissions;
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using System.Text;
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using System.Web.Compilation;
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using System.Web.Configuration;
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using System.Web.Hosting;
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using System.Web.Util;
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using System.IO;
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namespace System.Web.UI
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{
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// CAS - no InheritanceDemand here as the class is sealed
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[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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public sealed class PageParser : TemplateControlParser
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{
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static Type defaultPageBaseType;
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static Type defaultApplicationBaseType;
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static Type defaultPageParserFilterType;
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static Type defaultUserControlBaseType;
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static bool enableLongStringsAsResources = true;
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PagesEnableSessionState enableSessionState = PagesEnableSessionState.True;
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bool enableViewStateMac;
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bool enableViewStateMacSet;
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bool smartNavigation;
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bool haveTrace;
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bool trace;
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bool notBuffer;
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TraceMode tracemode = TraceMode.Default;
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string contentType;
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MainDirectiveAttribute <int> codepage;
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MainDirectiveAttribute <string> responseEncoding;
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MainDirectiveAttribute <int> lcid;
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MainDirectiveAttribute <string> clientTarget;
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MainDirectiveAttribute <string> masterPage;
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MainDirectiveAttribute <string> title;
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MainDirectiveAttribute <string> theme;
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MainDirectiveAttribute <string> metaDescription;
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MainDirectiveAttribute <string> metaKeywords;
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string culture;
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string uiculture;
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string errorPage;
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bool validateRequest;
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bool async;
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int asyncTimeout = -1;
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Type masterType;
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string masterVirtualPath;
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string styleSheetTheme;
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bool enable_event_validation;
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bool maintainScrollPositionOnPostBack;
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int maxPageStateFieldLength = -1;
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Type previousPageType;
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string previousPageVirtualPath;
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public static bool EnableLongStringsAsResources {
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get { return enableLongStringsAsResources; }
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set {
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BuildManager.AssertPreStartMethodsRunning ();
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enableLongStringsAsResources = value;
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}
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}
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public static Type DefaultPageBaseType {
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get { return defaultPageBaseType; }
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set {
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BuildManager.AssertPreStartMethodsRunning ();
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if (value != null && !typeof (Page).IsAssignableFrom (value))
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throw new ArgumentException (String.Format ("The value assigned to property '{0}' is invalid.", "DefaultPageBaseType"));
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defaultPageBaseType = value;
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}
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}
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public static Type DefaultApplicationBaseType {
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get { return defaultApplicationBaseType; }
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set {
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BuildManager.AssertPreStartMethodsRunning ();
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if (value != null && !typeof (HttpApplication).IsAssignableFrom (value))
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throw new ArgumentException (String.Format ("The value assigned to property '{0}' is invalid.", "DefaultApplicationBaseType"));
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defaultApplicationBaseType = value;
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}
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}
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public static Type DefaultPageParserFilterType {
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get { return defaultPageParserFilterType; }
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set {
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BuildManager.AssertPreStartMethodsRunning ();
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if (value != null && !typeof (PageParserFilter).IsAssignableFrom (value))
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throw new ArgumentException (String.Format ("The value assigned to property '{0}' is invalid.", "DefaultPageParserFilterType"));
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defaultPageParserFilterType = value;
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}
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}
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public static Type DefaultUserControlBaseType {
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get { return defaultUserControlBaseType; }
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set {
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if (value != null && !typeof (UserControl).IsAssignableFrom (value))
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throw new ArgumentException (String.Format ("The value assigned to property '{0}' is invalid.", "DefaultUserControlBaseType"));
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BuildManager.AssertPreStartMethodsRunning ();
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defaultUserControlBaseType = value;
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}
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}
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public PageParser ()
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{
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LoadConfigDefaults ();
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}
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internal PageParser (string virtualPath, string inputFile, HttpContext context)
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{
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this.VirtualPath = new VirtualPath (virtualPath);
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Context = context;
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BaseVirtualDir = VirtualPathUtility.GetDirectory (virtualPath, false);
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InputFile = inputFile;
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SetBaseType (null);
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AddApplicationAssembly ();
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LoadConfigDefaults ();
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}
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internal PageParser (VirtualPath virtualPath, TextReader reader, HttpContext context)
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: this (virtualPath, null, reader, context)
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{
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}
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internal PageParser (VirtualPath virtualPath, string inputFile, TextReader reader, HttpContext context)
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{
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this.VirtualPath = virtualPath;
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Context = context;
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BaseVirtualDir = virtualPath.DirectoryNoNormalize;
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Reader = reader;
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if (String.IsNullOrEmpty (inputFile))
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InputFile = virtualPath.PhysicalPath;
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else
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InputFile = inputFile;
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SetBaseType (null);
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AddApplicationAssembly ();
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LoadConfigDefaults ();
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}
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internal override void LoadConfigDefaults ()
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{
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base.LoadConfigDefaults ();
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PagesSection ps = PagesConfig;
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notBuffer = !ps.Buffer;
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enableSessionState = ps.EnableSessionState;
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enableViewStateMac = ps.EnableViewStateMac;
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smartNavigation = ps.SmartNavigation;
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validateRequest = ps.ValidateRequest;
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string value = ps.MasterPageFile;
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if (value.Length > 0)
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masterPage = new MainDirectiveAttribute <string> (value, true);
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enable_event_validation = ps.EnableEventValidation;
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maxPageStateFieldLength = ps.MaxPageStateFieldLength;
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value = ps.Theme;
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if (value.Length > 0)
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theme = new MainDirectiveAttribute <string> (value, true);
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styleSheetTheme = ps.StyleSheetTheme;
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if (styleSheetTheme.Length == 0)
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styleSheetTheme = null;
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maintainScrollPositionOnPostBack = ps.MaintainScrollPositionOnPostBack;
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}
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public static IHttpHandler GetCompiledPageInstance (string virtualPath, string inputFile, HttpContext context)
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{
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bool isFake = false;
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if (!String.IsNullOrEmpty (inputFile))
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isFake = !inputFile.StartsWith (HttpRuntime.AppDomainAppPath);
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return BuildManager.CreateInstanceFromVirtualPath (new VirtualPath (virtualPath, inputFile, isFake), typeof (IHttpHandler)) as IHttpHandler;
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}
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internal override void ProcessMainAttributes (IDictionary atts)
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{
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// note: the 'enableSessionState' configuration property is
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// processed in a case-sensitive manner while the page-level
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// attribute is processed case-insensitive
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string enabless = GetString (atts, "EnableSessionState", null);
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if (enabless != null) {
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if (String.Compare (enabless, "readonly", true, Helpers.InvariantCulture) == 0)
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enableSessionState = PagesEnableSessionState.ReadOnly;
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else if (String.Compare (enabless, "true", true, Helpers.InvariantCulture) == 0)
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enableSessionState = PagesEnableSessionState.True;
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else if (String.Compare (enabless, "false", true, Helpers.InvariantCulture) == 0)
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enableSessionState = PagesEnableSessionState.False;
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else
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ThrowParseException ("Invalid value for enableSessionState: " + enabless);
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}
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string value = GetString (atts, "CodePage", null);
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if (value != null) {
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if (responseEncoding != null)
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ThrowParseException ("CodePage and ResponseEncoding are mutually exclusive.");
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if (!BaseParser.IsExpression (value)) {
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int cpval = -1;
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try {
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cpval = (int) UInt32.Parse (value);
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} catch {
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ThrowParseException ("Invalid value for CodePage: " + value);
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}
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try {
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Encoding.GetEncoding (cpval);
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} catch {
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ThrowParseException ("Unsupported codepage: " + value);
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}
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codepage = new MainDirectiveAttribute <int> (cpval, true);
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} else
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codepage = new MainDirectiveAttribute <int> (value);
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}
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value = GetString (atts, "ResponseEncoding", null);
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if (value != null) {
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if (codepage != null)
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ThrowParseException ("CodePage and ResponseEncoding are mutually exclusive.");
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if (!BaseParser.IsExpression (value)) {
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try {
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Encoding.GetEncoding (value);
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} catch {
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ThrowParseException ("Unsupported encoding: " + value);
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}
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responseEncoding = new MainDirectiveAttribute <string> (value, true);
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} else
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responseEncoding = new MainDirectiveAttribute <string> (value);
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}
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contentType = GetString (atts, "ContentType", null);
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value = GetString (atts, "LCID", null);
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if (value != null) {
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if (!BaseParser.IsExpression (value)) {
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int parsedLcid = -1;
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try {
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parsedLcid = (int) UInt32.Parse (value);
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} catch {
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ThrowParseException ("Invalid value for LCID: " + value);
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}
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CultureInfo ci = null;
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try {
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ci = new CultureInfo (parsedLcid);
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} catch {
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ThrowParseException ("Unsupported LCID: " + value);
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}
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if (ci.IsNeutralCulture) {
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string suggestedCulture = SuggestCulture (ci.Name);
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string fmt = "LCID attribute must be set to a non-neutral Culture.";
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if (suggestedCulture != null) {
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ThrowParseException (fmt + " Please try one of these: " +
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suggestedCulture);
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} else {
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ThrowParseException (fmt);
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}
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}
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lcid = new MainDirectiveAttribute <int> (parsedLcid, true);
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} else
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lcid = new MainDirectiveAttribute <int> (value);
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}
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culture = GetString (atts, "Culture", null);
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if (culture != null) {
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if (lcid != null)
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ThrowParseException ("Culture and LCID are mutually exclusive.");
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CultureInfo ci = null;
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try {
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if (!culture.StartsWith ("auto"))
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ci = new CultureInfo (culture);
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} catch {
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ThrowParseException ("Unsupported Culture: " + culture);
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}
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if (ci != null && ci.IsNeutralCulture) {
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string suggestedCulture = SuggestCulture (culture);
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string fmt = "Culture attribute must be set to a non-neutral Culture.";
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if (suggestedCulture != null)
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ThrowParseException (fmt +
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" Please try one of these: " + suggestedCulture);
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else
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ThrowParseException (fmt);
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}
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}
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uiculture = GetString (atts, "UICulture", null);
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if (uiculture != null) {
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CultureInfo ci = null;
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try {
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if (!uiculture.StartsWith ("auto"))
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ci = new CultureInfo (uiculture);
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} catch {
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ThrowParseException ("Unsupported Culture: " + uiculture);
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}
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if (ci != null && ci.IsNeutralCulture) {
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string suggestedCulture = SuggestCulture (uiculture);
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string fmt = "UICulture attribute must be set to a non-neutral Culture.";
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if (suggestedCulture != null)
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ThrowParseException (fmt +
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" Please try one of these: " + suggestedCulture);
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else
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ThrowParseException (fmt);
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}
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}
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string tracestr = GetString (atts, "Trace", null);
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if (tracestr != null) {
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haveTrace = true;
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atts ["Trace"] = tracestr;
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trace = GetBool (atts, "Trace", false);
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}
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string tracemodes = GetString (atts, "TraceMode", null);
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if (tracemodes != null) {
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bool valid = true;
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try {
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tracemode = (TraceMode) Enum.Parse (typeof (TraceMode), tracemodes, false);
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} catch {
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valid = false;
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}
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if (!valid || tracemode == TraceMode.Default)
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ThrowParseException ("The 'tracemode' attribute is case sensitive and must be " +
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"one of the following values: SortByTime, SortByCategory.");
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}
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errorPage = GetString (atts, "ErrorPage", null);
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validateRequest = GetBool (atts, "ValidateRequest", validateRequest);
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value = GetString (atts, "ClientTarget", null);
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if (value != null) {
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if (!BaseParser.IsExpression (value)) {
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value = value.Trim ();
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ClientTargetSection sec = GetConfigSection <ClientTargetSection> ("system.web/clientTarget");
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ClientTarget ct = null;
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if ((ct = sec.ClientTargets [value]) == null)
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value = value.ToLowerInvariant ();
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if (ct == null && (ct = sec.ClientTargets [value]) == null) {
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ThrowParseException (String.Format (
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"ClientTarget '{0}' is an invalid alias. See the " +
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"documentation for <clientTarget> config. section.",
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clientTarget));
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}
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value = ct.UserAgent;
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clientTarget = new MainDirectiveAttribute <string> (value, true);
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} else
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clientTarget = new MainDirectiveAttribute <string> (value);
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}
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notBuffer = !GetBool (atts, "Buffer", true);
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async = GetBool (atts, "Async", false);
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string asyncTimeoutVal = GetString (atts, "AsyncTimeout", null);
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if (asyncTimeoutVal != null) {
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try {
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asyncTimeout = Int32.Parse (asyncTimeoutVal);
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} catch (Exception) {
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ThrowParseException ("AsyncTimeout must be an integer value");
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}
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}
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value = GetString (atts, "MasterPageFile", masterPage != null ? masterPage.Value : null);
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if (!String.IsNullOrEmpty (value)) {
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if (!BaseParser.IsExpression (value)) {
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value = System.Web.VirtualPathUtility.Combine(BaseVirtualDir, value);
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var vpp = HostingEnvironment.VirtualPathProvider;
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if (!vpp.FileExists (value))
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ThrowParseFileNotFound (value);
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value = vpp.CombineVirtualPaths (VirtualPath.Absolute, VirtualPathUtility.ToAbsolute (value));
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AddDependency (value, false);
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masterPage = new MainDirectiveAttribute <string> (value, true);
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} else
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masterPage = new MainDirectiveAttribute <string> (value);
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}
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value = GetString(atts, "Title", null);
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if (value != null) {
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if (!BaseParser.IsExpression (value))
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title = new MainDirectiveAttribute <string> (value, true);
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else
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title = new MainDirectiveAttribute <string> (value);
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}
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value = GetString (atts, "Theme", theme != null ? theme.Value : null);
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if (value != null) {
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if (!BaseParser.IsExpression (value))
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theme = new MainDirectiveAttribute <string> (value, true);
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else
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theme = new MainDirectiveAttribute <string> (value);
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}
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styleSheetTheme = GetString (atts, "StyleSheetTheme", styleSheetTheme);
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enable_event_validation = GetBool (atts, "EnableEventValidation", enable_event_validation);
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maintainScrollPositionOnPostBack = GetBool (atts, "MaintainScrollPositionOnPostBack", maintainScrollPositionOnPostBack);
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if (atts.Contains ("EnableViewStateMac")) {
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enableViewStateMac = GetBool (atts, "EnableViewStateMac", enableViewStateMac);
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enableViewStateMacSet = true;
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}
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value = GetString (atts, "MetaDescription", null);
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if (value != null) {
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if (!BaseParser.IsExpression (value))
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metaDescription = new MainDirectiveAttribute <string> (value, true);
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else
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metaDescription = new MainDirectiveAttribute <string> (value);
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}
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value = GetString (atts, "MetaKeywords", null);
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if (value != null) {
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if (!BaseParser.IsExpression (value))
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metaKeywords = new MainDirectiveAttribute <string> (value, true);
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else
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metaKeywords = new MainDirectiveAttribute <string> (value);
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}
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// Ignored by now
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GetString (atts, "SmartNavigation", null);
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base.ProcessMainAttributes (atts);
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}
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internal override void AddDirective (string directive, IDictionary atts)
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{
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bool isMasterType = String.Compare ("MasterType", directive, StringComparison.OrdinalIgnoreCase) == 0;
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bool isPreviousPageType = isMasterType ? false : String.Compare ("PreviousPageType", directive,
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StringComparison.OrdinalIgnoreCase) == 0;
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string typeName = null;
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string virtualPath = null;
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Type type = null;
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if (isMasterType || isPreviousPageType) {
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PageParserFilter pfilter = PageParserFilter;
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if (pfilter != null)
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pfilter.PreprocessDirective (directive.ToLowerInvariant (), atts);
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typeName = GetString (atts, "TypeName", null);
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virtualPath = GetString (atts, "VirtualPath", null);
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if (typeName != null && virtualPath != null)
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ThrowParseException (
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String.Format ("The '{0}' directive must have exactly one attribute: TypeName or VirtualPath", directive));
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if (typeName != null) {
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type = LoadType (typeName);
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if (type == null)
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ThrowParseException (String.Format ("Could not load type '{0}'.", typeName));
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if (isMasterType)
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masterType = type;
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else
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previousPageType = type;
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} else if (!String.IsNullOrEmpty (virtualPath)) {
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if (!HostingEnvironment.VirtualPathProvider.FileExists (virtualPath))
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ThrowParseFileNotFound (virtualPath);
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AddDependency (virtualPath, true);
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if (isMasterType)
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masterVirtualPath = virtualPath;
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else
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previousPageVirtualPath = virtualPath;
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} else
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ThrowParseException (String.Format ("The {0} directive must have either a TypeName or a VirtualPath attribute.", directive));
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if (type != null)
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AddAssembly (type.Assembly, true);
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} else
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base.AddDirective (directive, atts);
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}
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static string SuggestCulture (string culture)
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{
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string retval = null;
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foreach (CultureInfo ci in CultureInfo.GetCultures (CultureTypes.SpecificCultures)) {
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if (ci.Name.StartsWith (culture))
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retval += ci.Name + " ";
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}
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return retval;
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}
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internal Type GetCompiledPageType (string virtualPath, string inputFile, HttpContext context)
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{
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return BuildManager.GetCompiledType (virtualPath);
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}
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internal override Type CompileIntoType ()
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{
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|
AspGenerator generator = new AspGenerator (this);
|
|
return generator.GetCompiledType ();
|
|
}
|
|
|
|
internal bool EnableSessionState {
|
|
get {
|
|
return enableSessionState == PagesEnableSessionState.True ||
|
|
ReadOnlySessionState;
|
|
}
|
|
}
|
|
|
|
internal bool EnableViewStateMac {
|
|
get { return enableViewStateMac; }
|
|
}
|
|
|
|
internal bool EnableViewStateMacSet {
|
|
get { return enableViewStateMacSet; }
|
|
}
|
|
|
|
internal bool SmartNavigation {
|
|
get { return smartNavigation; }
|
|
}
|
|
|
|
internal bool ReadOnlySessionState {
|
|
get {
|
|
return enableSessionState == PagesEnableSessionState.ReadOnly;
|
|
}
|
|
}
|
|
|
|
internal bool HaveTrace {
|
|
get { return haveTrace; }
|
|
}
|
|
|
|
internal bool Trace {
|
|
get { return trace; }
|
|
}
|
|
|
|
internal TraceMode TraceMode {
|
|
get { return tracemode; }
|
|
}
|
|
internal override Type DefaultBaseType {
|
|
get {
|
|
Type ret = DefaultPageBaseType;
|
|
if (ret == null)
|
|
return base.DefaultBaseType;
|
|
|
|
return ret;
|
|
}
|
|
}
|
|
internal override string DefaultBaseTypeName {
|
|
get { return PagesConfig.PageBaseType; }
|
|
}
|
|
|
|
internal override string DefaultDirectiveName {
|
|
get { return "page"; }
|
|
}
|
|
|
|
internal string ContentType {
|
|
get { return contentType; }
|
|
}
|
|
|
|
internal MainDirectiveAttribute <string> ResponseEncoding {
|
|
get { return responseEncoding; }
|
|
}
|
|
|
|
internal MainDirectiveAttribute <int> CodePage {
|
|
get { return codepage; }
|
|
}
|
|
|
|
internal MainDirectiveAttribute <int> LCID {
|
|
get { return lcid; }
|
|
}
|
|
|
|
internal MainDirectiveAttribute <string> ClientTarget {
|
|
get { return clientTarget; }
|
|
}
|
|
|
|
internal MainDirectiveAttribute <string> MasterPageFile {
|
|
get { return masterPage; }
|
|
}
|
|
|
|
internal MainDirectiveAttribute <string> Title {
|
|
get { return title; }
|
|
}
|
|
|
|
internal MainDirectiveAttribute <string> Theme {
|
|
get { return theme; }
|
|
}
|
|
internal MainDirectiveAttribute <string> MetaDescription {
|
|
get { return metaDescription; }
|
|
}
|
|
|
|
internal MainDirectiveAttribute <string> MetaKeywords {
|
|
get { return metaKeywords; }
|
|
}
|
|
internal string Culture {
|
|
get { return culture; }
|
|
}
|
|
|
|
internal string UICulture {
|
|
get { return uiculture; }
|
|
}
|
|
|
|
internal string ErrorPage {
|
|
get { return errorPage; }
|
|
}
|
|
|
|
internal bool ValidateRequest {
|
|
get { return validateRequest; }
|
|
}
|
|
|
|
internal bool NotBuffer {
|
|
get { return notBuffer; }
|
|
}
|
|
|
|
internal bool Async {
|
|
get { return async; }
|
|
}
|
|
|
|
internal int AsyncTimeout {
|
|
get { return asyncTimeout; }
|
|
}
|
|
|
|
internal string StyleSheetTheme {
|
|
get { return styleSheetTheme; }
|
|
}
|
|
|
|
internal Type MasterType {
|
|
get {
|
|
if (masterType == null && !String.IsNullOrEmpty (masterVirtualPath))
|
|
masterType = BuildManager.GetCompiledType (masterVirtualPath);
|
|
|
|
return masterType;
|
|
}
|
|
}
|
|
|
|
internal bool EnableEventValidation {
|
|
get { return enable_event_validation; }
|
|
}
|
|
|
|
internal bool MaintainScrollPositionOnPostBack {
|
|
get { return maintainScrollPositionOnPostBack; }
|
|
}
|
|
|
|
internal int MaxPageStateFieldLength {
|
|
get { return maxPageStateFieldLength; }
|
|
}
|
|
|
|
internal Type PreviousPageType {
|
|
get {
|
|
if (previousPageType == null && !String.IsNullOrEmpty (previousPageVirtualPath)) {
|
|
string mappedPath = MapPath (previousPageVirtualPath);
|
|
previousPageType = GetCompiledPageType (previousPageVirtualPath, mappedPath, HttpContext.Current);
|
|
}
|
|
|
|
return previousPageType;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|