Nightwolf.RegexBuilder

Library to ease the pain of creating regular expressions, using a fluent-like syntax. This library is still under development, but should be usable in it's current form.

For example, given something like a SQL Statement that looks like:

CREATE TABLE dbo.Bob (a INT IDENTITY(1,1))
CREATE TABLE Bob (a INT IDENTITY(1,1))

And extracting the table name ("Bob"), the regex would look something like:

^CREATE TABLE (?:dbo\.)?([A-Za-z]+) \(

or if we wanted to be looser with allowing different whitespace:

^CREATE\s+TABLE\s+(?:dbo\.)?([A-Za-z]+)\s+\(

Instead, we can write something like:

var regex = new RegexBuilder(Scope.StartsWith)
    .Literal("CREATE TABLE ", true)
    .Literal("dbo.").Repeat(RegexRepeats.ZeroOrOne)
    .AnyOf(CharacterClass.AlphaLower).Repeat(RegexRepeats.OneOrMore).Capture()
    .Literal(" ", true)
    .ToRegex(RegexOptions.IgnoreCase);

Yes, it's more verbose, but it is more descriptive of what we're trying to capture and look for.