redis-glob: Specify valid redis globs

[ bsd3, library, redis, web ] [ Propose Tags ]

Supplies functions that parse and use redis glob patterns. As in redis commands like KEYS, that filter using globs.

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Dependencies ascii-char (>=1.0.1 && <1.1), base (>=4.11 && <5.0), bytestring (>= && <0.11 || >= && <0.12.2), megaparsec (>=9.2.1 && <9.7) [details]
License BSD-3-Clause
Author Tim Emiola
Category Web, Redis
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Source repo head: git clone
Uploaded by adetokunbo at 2024-02-29T07:33:14Z
Distributions LTSHaskell:, NixOS:, Stackage:
Reverse Dependencies 1 direct, 3 indirect [details]
Downloads 500 total (24 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2024-02-29 [all 1 reports]

Readme for redis-glob-

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GitHub CI Stackage Nightly Hackage Hackage Dependencies BSD3

redis-glob checks that glob expressions for use with Redis are valid. Redis commands like KEYS use glob expressions to match keys in redis.

If the glob expression is invalid, the command returns an empty result, which unfortunately is the same as if the expression was valid but had no results.

Use validate to confirm if a glob expression is valid. It parses the expression in the same way as the actual redis glob implementation, returning Nothing for invalid expressions.

matches can be used to confirm that a bytestring matches a glob expression if the the glob expression is valid.


{-# LANGUAGE OverloadedStrings #-}

import Redis.Glob
import qualified Data.ByteString.Lazy.Char8 as CL

isOK :: CL.ByteString -> IO ()
isOk b = do
  CL.putStrLn $ "Is " <> b <> " ok? " <> maybe "n" (const "y") (validate b)
  CL.putStrLn $ "Does it match hello? " <> if (b `matches` "hello") then "y" else "n"

main :: IO()
main = do
  isOK "h?llo"     -- Is h?llo ok? y
                   -- Does it match hello? y
  isOK "y[a-b]llo" -- Is y[a-b]llo ok? y"
                   -- Does it match hello? n
  isOK "h[a-]llo"  -- Is h[a-]llo ok? n
                   -- Does it match hello? n