DiscoveryReference.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Services / Web / System / Web / Services / Discovery / DiscoveryReference.cs / 1305376 / DiscoveryReference.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Services.Discovery { 
 
    using System;
    using System.Xml.Serialization; 
    using System.Text.RegularExpressions;
    using System.IO;
    using System.Text;
    using System.Threading; 
    using System.Collections;
    using System.Diagnostics; 
    using System.Web.Services.Diagnostics; 

    ///  
    /// 
    ///    [To be supplied.]
    /// 
    public abstract class DiscoveryReference { 

        private DiscoveryClientProtocol clientProtocol; 
 
        /// 
        ///  
        ///    [To be supplied.]
        /// 
        [XmlIgnore]
        public DiscoveryClientProtocol ClientProtocol { 
            get { return clientProtocol; }
            set { clientProtocol = value; } 
        } 

        ///  
        /// 
        ///    [To be supplied.]
        /// 
        [XmlIgnore] 
        public virtual string DefaultFilename {
            get { 
                return FilenameFromUrl(Url); 
            }
        } 

        /// 
        /// 
        ///    [To be supplied.] 
        /// 
        public abstract void WriteDocument(object document, Stream stream); 
        ///  
        /// 
        ///    [To be supplied.] 
        /// 
        public abstract object ReadDocument(Stream stream);

        ///  
        /// 
        ///    [To be supplied.] 
        ///  
        [XmlIgnore]
        public abstract string Url { 
            get;
            set;
        }
 
        internal virtual void LoadExternals(Hashtable loadedExternals) {
        } 
 
        /// 
        ///  
        ///    [To be supplied.]
        /// 
        public static string FilenameFromUrl(string url) {
            // get everything after the last /, not including the one at the end of the string 
            int lastSlash = url.LastIndexOf('/', url.Length - 1);
            if (lastSlash >= 0) url = url.Substring(lastSlash + 1); 
 
            // get everything up to the first dot (the filename)
            int firstDot = url.IndexOf('.'); 
            if (firstDot >= 0) url = url.Substring(0, firstDot);

            // make sure we don't include the question mark and stuff that follows it
            int question = url.IndexOf('?'); 
            if (question >= 0) url = url.Substring(0, question);
            if (url == null || url.Length == 0) 
                return "item"; 
            return MakeValidFilename(url);
        } 

        private static bool FindChar(char ch, char[] chars) {
            for (int i = 0; i < chars.Length; i++) {
                if (ch == chars[i]) 
                    return true;
            } 
            return false; 
        }
 
        internal static string MakeValidFilename(string filename) {
            if (filename == null)
                return null;
 
            StringBuilder sb = new StringBuilder(filename.Length);
            for (int i = 0; i < filename.Length; i++) { 
                char c = filename[i]; 
                if (!FindChar(c, Path.InvalidPathChars))
                    sb.Append(c); 
            }
            string name = sb.ToString();
            if (name.Length == 0)
                name="item"; 

            return Path.GetFileName(name); 
        } 

        ///  
        /// 
        ///    [To be supplied.]
        /// 
        public void Resolve() { 
            if (ClientProtocol == null)
                throw new InvalidOperationException(Res.GetString(Res.WebResolveMissingClientProtocol)); 
 
            if (ClientProtocol.Documents[Url] != null)
                return; 
            if (ClientProtocol.InlinedSchemas[Url] != null)
                return;

            string newUrl = Url; 
            string oldUrl = Url;
            string contentType = null; 
            Stream stream = ClientProtocol.Download(ref newUrl, ref contentType); 
            if (ClientProtocol.Documents[newUrl] != null) {
                Url = newUrl; 
                return;
            }
            try {
                Url = newUrl; 
                Resolve(contentType, stream);
            } 
            catch { 
                Url = oldUrl;
                throw; 
            }
            finally {
                stream.Close();
            } 
        }
 
        internal Exception AttemptResolve(string contentType, Stream stream) { 
            try {
                Resolve(contentType, stream); 
                return null;
            }
            catch (Exception e) {
                if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) { 
                    throw;
                } 
                if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, this, "AttemptResolve", e); 
                return e;
            } 
        }

        /// 
        ///  
        ///    [To be supplied.]
        ///  
        protected internal abstract void Resolve(string contentType, Stream stream); 

        internal static string UriToString(string baseUrl, string relUrl) { 
            return (new Uri(new Uri(baseUrl), relUrl)).GetComponents(UriComponents.AbsoluteUri, UriFormat.SafeUnescaped);
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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DiscoveryReference.cs source code in C# .NET

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