blob: 8c335129b4c251747c6690be9ce59a7b19ef8d95 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
module Text.Hakyll.Util
( trim
, stripHTML
, link
) where
import Data.Char (isSpace)
-- | Trim a string (drop spaces and tabs at both sides).
trim :: String -> String
trim = reverse . trim' . reverse . trim'
where
trim' = dropWhile isSpace
-- | Strip html tags.
stripHTML :: String -> String
stripHTML [] = []
stripHTML str = let (beforeTag, rest) = break (== '<') str
(_, afterTag) = break (== '>') rest
in beforeTag ++ stripHTML (tail' afterTag)
-- We need a failsafe tail function.
where
tail' [] = []
tail' xs = tail xs
-- | Make a HTML link.
--
-- > link "foo" "bar.html" == "<a href='bar.html'>foo</a>"
link :: String -> String -> String
link text destination = "<a href=\"" ++ destination ++ "\">"
++ text ++ "</a>"
|
