31 lines
672 B
Crystal
31 lines
672 B
Crystal
|
class GistParams
|
||
|
|
class MissingGistId < Exception
|
||
|
|
end
|
||
|
|
|
||
|
|
GIST_ID_REGEX = /[a-f\d]+$/i
|
||
|
|
|
||
|
|
getter id : String
|
||
|
|
getter filename : String?
|
||
|
|
|
||
|
|
def self.extract_from_url(href : String)
|
||
|
|
uri = URI.parse(href)
|
||
|
|
maybe_id = Monads::Try(Regex::MatchData)
|
||
|
|
.new(->{ uri.path.match(GIST_ID_REGEX) })
|
||
|
|
.to_maybe
|
||
|
|
.fmap(->(matches : Regex::MatchData) { matches[0] })
|
||
|
|
case maybe_id
|
||
|
|
in Monads::Just
|
||
|
|
id = maybe_id.value!
|
||
|
|
in Monads::Nothing, Monads::Maybe
|
||
|
|
raise MissingGistId.new(href)
|
||
|
|
end
|
||
|
|
|
||
|
|
filename = uri.query_params["file"]?
|
||
|
|
|
||
|
|
new(id: id, filename: filename)
|
||
|
|
end
|
||
|
|
|
||
|
|
def initialize(@id : String, @filename : String?)
|
||
|
|
end
|
||
|
|
end
|