How to resolve the algorithm URL parser step by step in the Mathematica/Wolfram Language programming language

Published on 22 June 2024 08:30 PM
#Wolfram

How to resolve the algorithm URL parser step by step in the Mathematica/Wolfram Language programming language

Table of Contents

Problem Statement

URLs are strings with a simple syntax:

Parse a well-formed URL to retrieve the relevant information:   scheme, domain, path, ...

Note:   this task has nothing to do with URL encoding or URL decoding.

According to the standards, the characters: only need to be percent-encoded   (%)   in case of possible confusion. Also note that the path, query and fragment are case sensitive, even if the scheme and domain are not. The way the returned information is provided (set of variables, array, structured, record, object,...) is language-dependent and left to the programmer, but the code should be clear enough to reuse. Extra credit is given for clear error diagnostics.

According to T. Berners-Lee foo://example.com:8042/over/there?name=ferret#nose     should parse into:

urn:example:animal:ferret:nose     should parse into:

other URLs that must be parsed include:

Let's start with the solution:

Step by Step solution about How to resolve the algorithm URL parser step by step in the Mathematica/Wolfram Language programming language

The given Wolfram programming language code is using the URLParse function to parse a URL string and extract its components. Here's a detailed explanation of what each component represents:

  • foo://: This is the scheme of the URL. It specifies the protocol used to access the resource, in this case, it's "foo".

  • example.com: This is the host or domain name of the website or server where the resource is located.

  • :8042: This is the port number. It specifies the specific port on the server where the resource is accessible. In this case, it's port 8042.

  • /over/there: This is the path to the resource on the server. It specifies the location of the resource within the website's directory structure.

  • ?name=ferret: This is the query string. It contains additional information or parameters that can be used by the server to process the request. In this case, it's the key-value pair "name=ferret".

  • #nose: This is the fragment. It represents a specific part or section within the resource. It's often used to indicate an anchor point within a web page.

When you use the URLParse function, it returns a list of these individual components, allowing you to access and manipulate them separately.

In summary, the URLParse function helps in parsing a URL string, extracting its scheme, host, port, path, query string, and fragment into a list, making it easy to work with different parts of the URL separately.

Source code in the wolfram programming language

URLParse["foo://example.com:8042/over/there?name=ferret#nose"]

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