uribuilder.cs source code in C# .NET

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Code:

/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Net / System / uribuilder.cs / 1 / uribuilder.cs

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

namespace System { 
 
    using System.Net;
    using System.Text; 
    using System.Globalization;
    using System.Threading;

    ///  
    ///    [To be supplied.]
    ///  
    public class UriBuilder { 

    // fields 

        private bool m_changed = true;
        private string m_fragment = String.Empty;
        private string m_host = "localhost"; 
        private string m_password = String.Empty;
        private string m_path = "/"; 
        private int m_port = -1; 
        private string m_query = String.Empty;
        private string m_scheme = "http"; 
        private string m_schemeDelimiter = Uri.SchemeDelimiter;
        private Uri m_uri;
        private string m_username = String.Empty;
 
    // constructors
 
        ///  
        ///    [To be supplied.]
        ///  
        public UriBuilder() {
        }

        ///  
        ///    [To be supplied.]
        ///  
        public UriBuilder(string uri) { 

            // setting allowRelative=true for a string like www.acme.org 
            Uri tryUri = new Uri(uri, UriKind.RelativeOrAbsolute);

            if (tryUri.IsAbsoluteUri) {
                Init(tryUri); 
            }
            else { 
                uri = Uri.UriSchemeHttp + Uri.SchemeDelimiter + uri; 
                Init(new Uri(uri));
            } 
        }

        /// 
        ///    [To be supplied.] 
        /// 
        public UriBuilder(Uri uri) { 
            Init(uri); 
        }
 
        private void Init(Uri uri) {
            m_fragment = uri.Fragment;
            m_query = uri.Query;
            m_host = uri.Host; 
            m_path = uri.AbsolutePath;
            m_port = uri.Port; 
            m_scheme = uri.Scheme; 
            m_schemeDelimiter = uri.HasAuthority? Uri.SchemeDelimiter: ":";
 
            string userInfo = uri.UserInfo;

            if (!ValidationHelper.IsBlankString(userInfo)) {
 
                int index = userInfo.IndexOf(':');
 
                if (index != -1) { 
                    m_password = userInfo.Substring(index + 1);
                    m_username = userInfo.Substring(0, index); 
                }
                else {
                    m_username = userInfo;
                } 
            }
            SetFieldsFromUri(uri); 
        } 

        ///  
        ///    [To be supplied.]
        /// 
        public UriBuilder(string schemeName, string hostName) {
            Scheme = schemeName; 
            Host = hostName;
        } 
 
        /// 
        ///    [To be supplied.] 
        /// 
        public UriBuilder(string scheme, string host, int portNumber) : this(scheme, host) {
            Port = portNumber;
        } 

        ///  
        ///    [To be supplied.] 
        /// 
        public UriBuilder(string scheme, 
                          string host,
                          int port,
                          string pathValue
                          ) : this(scheme, host, port) 
        {
            Path = pathValue; 
        } 

        ///  
        ///    [To be supplied.]
        /// 
        public UriBuilder(string scheme,
                          string host, 
                          int port,
                          string path, 
                          string extraValue 
                          ) : this(scheme, host, port, path)
        { 
            try {
                Extra = extraValue;
            }
            catch (Exception exception) { 
                if (exception is ThreadAbortException || exception is StackOverflowException || exception is OutOfMemoryException) {
                    throw; 
                } 

                throw new ArgumentException("extraValue"); 
            }
        }

    // properties 

        private string Extra { 
            set { 
                if (value == null) {
                    value = String.Empty; 
                }
                if (value.Length > 0) {
                    if (value[0] == '#') {
                        Fragment = value.Substring(1); 
                    }
                    else if (value[0] == '?') { 
                        int end = value.IndexOf('#'); 
                        if (end == -1) {
                            end = value.Length; 
                        }
                        else {
                            Fragment = value.Substring(end+1);
                        } 
                        Query = value.Substring(1, end-1);
                    } else { 
                        throw new ArgumentException("value"); 
                    }
                } 
                else {
                    Fragment = String.Empty;
                    Query = String.Empty;
                } 
            }
        } 
 
        /// 
        ///    [To be supplied.] 
        /// 
        public string Fragment {
            get {
                return m_fragment; 
            }
            set { 
                if (value == null) { 
                    value = String.Empty;
                } 
                if (value.Length > 0) {
                    value = '#' + value;
                }
                m_fragment = value; 
                m_changed = true;
            } 
        } 

        ///  
        ///    [To be supplied.]
        /// 
        public string Host {
            get { 
                return m_host;
            } 
            set { 
                if (value == null) {
                    value = String.Empty; 
                }
                m_host = value;
                //probable ipv6 address -
                if (m_host.IndexOf(':') >= 0) { 
                    //set brackets
                    if (m_host[0] != '[') 
                        m_host = "[" + m_host + "]"; 
                }
                m_changed = true; 
            }
        }

        ///  
        ///    [To be supplied.]
        ///  
        public string Password { 
            get {
                return m_password; 
            }
            set {
                if (value == null) {
                    value = String.Empty; 
                }
                m_password = value; 
            } 
        }
 
        /// 
        ///    [To be supplied.]
        /// 
        public string Path { 
            get {
                return m_path; 
            } 
            set {
                if ((value == null) || (value.Length == 0)) { 
                    value = "/";
                }
                //if ((value[0] != '/') && (value[0] != '\\')) {
                //    value = '/' + value; 
                //}
                m_path = Uri.InternalEscapeString(ConvertSlashes(value)); 
                m_changed = true; 
            }
        } 

        /// 
        ///    [To be supplied.]
        ///  
        public int Port {
            get { 
                return m_port; 
            }
            set { 
                if (value < -1 || value > 0xFFFF) {
                    throw new ArgumentOutOfRangeException("value");
                }
                m_port = value; 
                m_changed = true;
            } 
        } 

        ///  
        ///    [To be supplied.]
        /// 
        public string Query {
            get { 
                return m_query;
            } 
            set { 
                if (value == null) {
                    value = String.Empty; 
                }
                if (value.Length > 0) {
                    value = '?' + value;
                } 
                m_query = value;
                m_changed = true; 
            } 
        }
 
        /// 
        ///    [To be supplied.]
        /// 
        public string Scheme { 
            get {
                return m_scheme; 
            } 
            set {
                if (value == null) { 
                    value = String.Empty;
                }

                int index = value.IndexOf(':'); 
                if (index != -1) {
                    value = value.Substring(0, index); 
                } 

                if (value.Length != 0) 
                {
                    if (!Uri.CheckSchemeName(value)) {
                        throw new ArgumentException("value");
                    } 
                    value = value.ToLower(CultureInfo.InvariantCulture);
                } 
                m_scheme  = value; 
                m_changed = true;
            } 
        }

        /// 
        ///    [To be supplied.] 
        /// 
        public Uri Uri { 
            get { 
                if (m_changed) {
                    m_uri = new Uri(ToString()); 
                    SetFieldsFromUri(m_uri);
                    m_changed = false;
                }
                return m_uri; 
            }
        } 
 
        /// 
        ///    [To be supplied.] 
        /// 
        public string UserName {
            get {
                return m_username; 
            }
            set { 
                if (value == null) { 
                    value = String.Empty;
                } 
                m_username = value;
            }
        }
 
    // methods
 
        private string ConvertSlashes(string path) { 

            StringBuilder sb = new StringBuilder(path.Length); 
            char ch;

            for (int i = 0; i < path.Length; ++i) {
                ch = path[i]; 
                if (ch == '\\') {
                    ch = '/'; 
                } 
                sb.Append(ch);
            } 
            return sb.ToString();
        }

        ///  
        ///    [To be supplied.]
        ///  
        public override bool Equals(object rparam) { 
            if (rparam == null) {
                return false; 
            }
            return Uri.Equals(rparam.ToString());
        }
 
        /// 
        ///    [To be supplied.] 
        ///  
        public override int GetHashCode() {
            return Uri.GetHashCode(); 
        }

        private void SetFieldsFromUri(Uri uri) {
            m_fragment = uri.Fragment; 
            m_query = uri.Query;
            m_host = uri.Host; 
            m_path = uri.AbsolutePath; 
            m_port = uri.Port;
            m_scheme = uri.Scheme; 
            m_schemeDelimiter = uri.HasAuthority? Uri.SchemeDelimiter: ":";

            string userInfo = uri.UserInfo;
 
            if (userInfo.Length > 0) {
 
                int index = userInfo.IndexOf(':'); 

                if (index != -1) { 
                    m_password = userInfo.Substring(index + 1);
                    m_username = userInfo.Substring(0, index);
                }
                else { 
                    m_username = userInfo;
                } 
            } 
        }
 
        /// 
        ///    [To be supplied.]
        /// 
        public override string ToString() { 

            if (m_username.Length == 0 && m_password.Length > 0) { 
                throw new UriFormatException(SR.GetString(SR.net_uri_BadUserPassword)); 
            }
 
            if (m_scheme.Length != 0)
            {
                UriParser syntax = UriParser.GetSyntax(m_scheme);
                if (syntax != null) 
                    m_schemeDelimiter = syntax.InFact(UriSyntaxFlags.MustHaveAuthority) ||
                                        (m_host.Length != 0 && syntax.NotAny(UriSyntaxFlags.MailToLikeUri) && syntax.InFact(UriSyntaxFlags.OptionalAuthority )) 
                            ? Uri.SchemeDelimiter 
                            : ":";
                else 
                    m_schemeDelimiter = m_host.Length != 0? Uri.SchemeDelimiter: ":";
            }

            string result = m_scheme.Length != 0? (m_scheme + m_schemeDelimiter): string.Empty; 
            return result
                    + m_username 
                    + ((m_password.Length > 0) ? (":" + m_password) : String.Empty) 
                    + ((m_username.Length > 0) ? "@" : String.Empty)
                    + m_host 
                    + (((m_port != -1) && (m_host.Length > 0)) ? (":" + m_port) : String.Empty)
                    + (((m_host.Length > 0) && (m_path.Length != 0) && (m_path[0] != '/')) ? "/" : String.Empty) + m_path
                    + m_query
                    + m_fragment; 
        }
    } 
}
                        

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