blob: 54332a9f848f8fb0bce8a8e300b4bfa4bfd97cce (
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
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
--------------------------------------------------------------------------------
module Hakyll.Core.Provider.Internal
( Provider (..)
, newProvider
, resourceList
, resourceExists
, resourceMetadataResource
, resourceString
, resourceLBS
) where
--------------------------------------------------------------------------------
import Control.Applicative ((<$>))
import qualified Data.ByteString.Lazy as BL
import Data.IORef
import Data.Map (Map)
import qualified Data.Map as M
import Data.Set (Set)
import qualified Data.Set as S
import System.FilePath (addExtension)
--------------------------------------------------------------------------------
import Hakyll.Core.Store
import Hakyll.Core.Util.File
import Hakyll.Core.Identifier
--------------------------------------------------------------------------------
-- | Responsible for retrieving and listing resources
data Provider = Provider
{ -- | A list of all files found
providerSet :: Set Identifier
, -- | Cache keeping track of modified files
providerModifiedCache :: IORef (Map Identifier Bool)
, -- | Underlying persistent store for caching
providerStore :: Store
}
--------------------------------------------------------------------------------
-- | Create a resource provider
newProvider :: Store -- ^ Store to use
-> (FilePath -> Bool) -- ^ Should we ignore this file?
-> FilePath -- ^ Search directory
-> IO Provider -- ^ Resulting provider
newProvider store ignore directory = do
list <- map fromFilePath . filter (not . ignore) <$>
getRecursiveContents False directory
cache <- newIORef M.empty
return $ Provider (S.fromList list) cache store
--------------------------------------------------------------------------------
resourceList :: Provider -> [Identifier]
resourceList = S.toList . providerSet
--------------------------------------------------------------------------------
-- | Check if a given resource exists
resourceExists :: Provider -> Identifier -> Bool
resourceExists provider =
(`S.member` providerSet provider) . setVersion Nothing
--------------------------------------------------------------------------------
-- | Each resource may have an associated metadata resource (with a @.metadata@
-- filename)
resourceMetadataResource :: Identifier -> Identifier
resourceMetadataResource =
fromFilePath . flip addExtension "metadata" . toFilePath
--------------------------------------------------------------------------------
-- | Get the raw body of a resource as string
resourceString :: Identifier -> IO String
resourceString = readFile . toFilePath
--------------------------------------------------------------------------------
-- | Get the raw body of a resource of a lazy bytestring
resourceLBS :: Identifier -> IO BL.ByteString
resourceLBS = BL.readFile . toFilePath
|
