Parsing Raw Text Inputs In Web Applications Using ANTLR

Parsing Raw Text Inputs In Web Applications Using ANTLR

This tutorial will explain how you can create a parser to handle raw text inputs with the ANTLR toolkit. For demonstration, we will create a simple log parser application that will convert raw text to HTML-styled output.

Create a parser to handle raw text inputs with the ANTLR toolkit and webpack in this step-by-step tutorial and example build.

Web applications often accept inputs from the users. In most cases, web applications request each user input separately. For example, a typical web application will ask you to enter your first name, last name, and email address during the registration process.

This form-filling mechanism came from the initial Web 2.0 phase. Now, for a better user experience, almost all applications are trying to reduce the number of mandatory user inputs. For example, some applications now only ask for your login email at the registration.

Some web applications do complex user input processing, such as analyzing a log file, accepting a text with custom grammar (e.g., hashtags, internal document identifiers, and user mentions), and domain-specific search queries. If the pattern matching requirement is simple, we can implement a solution using regular expressions. However, if we need to have an extendable solution, we have to implement our own parsers.

This tutorial will explain how you can create a parser to handle raw text inputs with the ANTLR toolkit. For demonstration, we will create a simple log parser application that will convert raw text to HTML-styled output.

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