Step by Step solution about How to resolve the algorithm URL parser step by step in the C# programming language

Explanation:

The provided C# source code defines a program that parses and displays various components of a URL using the System.Uri class.

Code Overview:

• Namespace and Class Declaration:

  • The code is contained within the RosettaUrlParse namespace and the Program class.

• ParseUrl Method:

  • This method takes a URL as an input parameter.
  • It creates a Uri object using the URL string.
  • It extracts and prints the various URL components, including:
    • Absolute Uri (full URL)
    • Scheme (e.g., http, ftp)
    • Host (DNS-safe host name)
    • Port
    • Local path
    • Query string
    • Fragment identifier

• Main Method:

  • The Main method is the entry point of the program.
  • It calls the ParseUrl method on several predefined URLs, including those representing different URL schemes and formats (e.g., HTTP, FTP, LDAP, RFC pattern, etc.).

Sample Input and Output:

When the program is executed, it will parse and display the following sample URLs:

• foo://example.com:8042/over/there?name=ferret#nose

  • URL: foo://example.com:8042/over/there?name=ferret#nose
  • Scheme: foo
  • Host: example.com
  • Port: 8042
  • Path: /over/there
  • Query: ?name=ferret
  • Fragment: #nose

• urn:example:animal:ferret:nose

  • URL: urn:example:animal:ferret:nose
  • Scheme: urn
  • Host:
  • Port: -1
  • Path: example/animal/ferret/nose
  • Query:
  • Fragment:

And so on for the other sample URLs.

Benefits of Using System.Uri:

The System.Uri class provides a robust and standardized way to parse, manipulate, and validate URLs. It makes it convenient to extract specific URL components without the need for complex string parsing or regular expressions.

using System;

namespace RosettaUrlParse
{
    class Program
    {
        static void ParseUrl(string url)
        {
            var u = new Uri(url);
            Console.WriteLine("URL:         {0}", u.AbsoluteUri);
            Console.WriteLine("Scheme:      {0}", u.Scheme);
            Console.WriteLine("Host:        {0}", u.DnsSafeHost);
            Console.WriteLine("Port:        {0}", u.Port);
            Console.WriteLine("Path:        {0}", u.LocalPath);
            Console.WriteLine("Query:       {0}", u.Query);
            Console.WriteLine("Fragment:    {0}", u.Fragment);
            Console.WriteLine();
        }
        static void Main(string[] args)
        {
            ParseUrl("foo://example.com:8042/over/there?name=ferret#nose");
            ParseUrl("urn:example:animal:ferret:nose");
            ParseUrl("jdbc:mysql://test_user:ouupppssss@localhost:3306/sakila?profileSQL=true");
            ParseUrl("ftp://ftp.is.co.za/rfc/rfc1808.txt");
            ParseUrl("http://www.ietf.org/rfc/rfc2396.txt#header1");
            ParseUrl("ldap://[2001:db8::7]/c=GB?objectClass?one");
            ParseUrl("mailto:John.Doe@example.com");
            ParseUrl("news:comp.infosystems.www.servers.unix");
            ParseUrl("tel:+1-816-555-1212");
            ParseUrl("telnet://192.0.2.16:80/");
            ParseUrl("urn:oasis:names:specification:docbook:dtd:xml:4.1.2");
        }
    }
}