blob: 8a32e0fb66c15418cc765a840022cc6145e9153f (
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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
{-# LANGUAGE OverloadedStrings #-}
module MdBlocks.Address
( Address(..)
, parseAddress
, addressOf
)
where
import Data.Text (Text)
import qualified Data.Text as T
import MdBlocks.Types
data Address
= GlobalId Text
| FileAddress FilePath Text
deriving (Show, Eq)
parseAddress :: String -> Either String Address
parseAddress input =
case T.breakOn "#" (T.pack input) of
(file, ident)
| T.null file ->
Left "address must contain a file path"
| T.null ident ->
Left "address must contain a block id after '#'"
| otherwise ->
Right
(FileAddress
(T.unpack file)
(T.drop 1 ident))
addressOf :: Block -> Text
addressOf b =
case mdId (blockMeta b) of
Just x ->
T.pack (blockFile b) <> "#" <> x
Nothing ->
T.pack (blockFile b)
<> "#"
<> T.pack (show (blockNumber b))
|
