How do I use REGEX in Delphi

To use regular expressions in Delphi, you can use the TRegEx class from the System.RegularExpressions unit. This class provides methods and properties for working with regular expressions, such as Match() and Replace() for matching and replacing strings, and Captures() and Groups() for accessing matched groups.

Here is an example of how you might use the TRegEx class in Delphi to search for and replace patterns in a string:

uses
  System.RegularExpressions;

var
  S: string;
  R: TRegEx;
begin
  S := ‘Hello, world!’;
  R := TRegEx.Create(‘world’, [roIgnoreCase]);
  if R.IsMatch(S) then
  begin
    // Replace “world” with “Delphi”
    S := R.Replace(S, ‘Delphi’);
    ShowMessage(S); // Outputs “Hello, Delphi!”
  end;
end;

uses

System.RegularExpressions;

var

S: string;

R: TRegEx;

begin

S := ‘Hello, world!’;

R := TRegEx.Create(‘world’, [roIgnoreCase]);

if R.IsMatch(S) then

begin

// Replace “world” with “Delphi”

S := R.Replace(S, ‘Delphi’);

ShowMessage(S); // Outputs “Hello, Delphi!”

end;

In this example, the TRegEx class is used to search for the pattern world in the string S, and then replace it with the string Delphi. The roIgnoreCase option is used to make the search case-insensitive. You can use the TRegEx class and its methods and properties in a similar way to work with regular expressions in your Delphi code.

How do I use REGEX in Delphi

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