| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Network.Wai.Header
Description
Some helpers for dealing with WAI Headers.
Synopsis
- contentLength :: [(HeaderName, ByteString)] -> Maybe Integer
- parseQValueList :: ByteString -> [(ByteString, Maybe Int)]
- replaceHeader :: HeaderName -> ByteString -> [Header] -> [Header]
Documentation
contentLength :: [(HeaderName, ByteString)] -> Maybe Integer Source #
More useful for a response. A Wai Request already has a requestBodyLength
parseQValueList :: ByteString -> [(ByteString, Maybe Int)] Source #
Only to be used on header's values which support quality value syntax
A few things to keep in mind when using this function:
* The resulting Int will be anywhere from 1000 to 0 ("1" = 1000, "0.6" = 600, "0.025" = 25)
* The absence of a Q value will result in 'Just 1000'
* A bad parse of the Q value will result in a Nothing, e.g.
* Q value has more than 3 digits behind the dot
* Q value is missing
* Q value is higher than 1
* Q value is not a number
replaceHeader :: HeaderName -> ByteString -> [Header] -> [Header] Source #