Escape < and > characters

[daniloc]

Hello,

Thanks for Parma, it's terrific!

I did discover that because XML is used under the hood, content with < and > causes problems with the output, essentially truncating anything before the first <.

This pull adds a function to escape these characters. An enum is provided to allow easy addition of future escaped characters:

enum EscapedCharacters: String, CaseIterable {
            
            case leftAngleBracket = "<",
                 rightAngleBracket = ">"
            
            func replacement() -> String {
                switch self {
                case .leftAngleBracket:
                    return "&lt;"
                case .rightAngleBracket:
                    return "&gt;"
                }
            }
            
            static func escapeString(_ string: String) -> String {
                var escapedValue = string
                
                self.allCases.forEach {
                    escapedValue = escapedValue.replacingOccurrences(of: $0.rawValue, with: $0.replacement())
                }
                
                return escapedValue
            }
        }

I hope you will find this addition useful, and open to any feedback if you'd prefer this to live elsewhere in the project than ParmaCore.

[dasautoooo]

Thanks, @daniloc , that's actually helpful!

[dasautoooo]

Hi @daniloc , I've merged this into a new branch, will make some small tweaks and merge it back to main.
Thank you!

[dasautoooo]

The changes are in Parma 0.3.0. Thanks again 🙌.