ScriptResourceInfo.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / Orcas / RTM / ndp / fx / src / xsp / System / Web / Extensions / ui / ScriptResourceInfo.cs / 2 / ScriptResourceInfo.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI { 
    using System; 
    using System.Collections;
    using System.Collections.Generic; 
    using System.Globalization;
    using System.Reflection;
    using System.Text;
    using System.Web.Resources; 
    using System.Web.Util;
 
    internal class ScriptResourceInfo { 
        private string _contentType;
        private bool _performSubstitution; 
        private string _scriptName;
        private string _scriptResourceName;
        private string _typeName;
        private bool _isDebug; 

        private static readonly IDictionary _scriptCache = Hashtable.Synchronized(new Hashtable()); 
        private static readonly IDictionary _duplicateScriptAttributesChecked = Hashtable.Synchronized(new Hashtable()); 

        public static readonly ScriptResourceInfo Empty = new ScriptResourceInfo(); 

        public ScriptResourceInfo() {
            _contentType = "application/x-javascript";
        } 

        public ScriptResourceInfo(ScriptResourceAttribute attr) 
            : this() { 
            _scriptName = attr.ScriptName;
            _scriptResourceName = attr.ScriptResourceName; 
            _typeName = attr.TypeName;
        }

        public string ContentType { 
            get { return _contentType; }
            set { _contentType = value; } 
        } 

        public bool IsDebug { 
            get { return _isDebug; }
            set { _isDebug = value; }
        }
 
        public bool PerformSubstitution {
            get { return _performSubstitution; } 
            set { _performSubstitution = value; } 
        }
 
        public string ScriptName {
            get { return _scriptName; }
            set { _scriptName = value; }
        } 

        public string ScriptResourceName { 
            get { return _scriptResourceName; } 
        }
 
        public string TypeName {
            get { return _typeName; }
        }
 
        public static ScriptResourceInfo GetInstance(Assembly assembly, string resourceName) {
            // The first time this API is called, check for attributes that point to the same script 
            if (!_duplicateScriptAttributesChecked.Contains(assembly)) { 
                Dictionary scripts = new Dictionary();
                foreach (ScriptResourceAttribute attr 
                    in assembly.GetCustomAttributes(typeof(ScriptResourceAttribute), false)) {

                    string scriptName = attr.ScriptName;
                    if (scripts.ContainsKey(scriptName)) { 
                        throw new InvalidOperationException(
                            String.Format(CultureInfo.CurrentCulture, 
                                  AtlasWeb.ScriptResourceHandler_DuplicateScriptResources, 
                                  scriptName, assembly.GetName()));
                    } 
                    scripts.Add(scriptName, true);
                }

                _duplicateScriptAttributesChecked[assembly] = true; 
            }
            Pair cacheKey = new Pair(assembly, resourceName); 
            ScriptResourceInfo resourceInfo = (ScriptResourceInfo)_scriptCache[cacheKey]; 
            if (resourceInfo == null) {
                resourceInfo = ScriptResourceInfo.Empty; 
                object[] attrs = assembly.GetCustomAttributes(typeof(ScriptResourceAttribute), false);
                // First look for a script resource attribute with that name
                for (int i = 0; i < attrs.Length; i++) {
                    ScriptResourceAttribute sra = (ScriptResourceAttribute)attrs[i]; 
                    if (String.Equals(sra.ScriptName, resourceName, StringComparison.Ordinal)) {
                        resourceInfo = new ScriptResourceInfo(sra); 
                        break; 
                    }
                } 
                // Look for a web resource with that name, to get additional info if any
                attrs = assembly.GetCustomAttributes(typeof(WebResourceAttribute), false);
                for (int i = 0; i < attrs.Length; i++) {
                    WebResourceAttribute wra = (WebResourceAttribute)attrs[i]; 
                    if (String.Equals(wra.WebResource, resourceName, StringComparison.Ordinal)) {
                        if (resourceInfo == ScriptResourceInfo.Empty) { 
                            resourceInfo = new ScriptResourceInfo(); 
                            resourceInfo.ScriptName = resourceName;
                        } 
                        resourceInfo.ContentType = wra.ContentType;
                        resourceInfo.PerformSubstitution = wra.PerformSubstitution;
                        break;
                    } 
                }
                resourceInfo.IsDebug = resourceName.EndsWith(".debug.js", StringComparison.OrdinalIgnoreCase); 
 
                // Cache the results so we don't have to do this again
                _scriptCache[cacheKey] = resourceInfo; 
            }
            return resourceInfo;
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK