summaryrefslogtreecommitdiff
path: root/src/Hakyll/Core/Provider.hs
blob: 00b694d53d601d257516d0d13f7816451c2a919f (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
--------------------------------------------------------------------------------
-- | This module provides an wrapper API around the file system which does some
-- caching.
module Hakyll.Core.Provider
    ( -- * Constructing resource providers
      Internal.Provider
    , newProvider

      -- * Querying resource properties
    , Internal.resourceList
    , Internal.resourceExists
    , Internal.resourceModified
    , Internal.resourceModificationTime

      -- * Access to raw resource content
    , Internal.resourceString
    , Internal.resourceLBS

      -- * Access to metadata and body content
    , Internal.resourceMetadata
    , Internal.resourceBody
    ) where


--------------------------------------------------------------------------------
import qualified Hakyll.Core.Provider.Internal      as Internal
import qualified Hakyll.Core.Provider.MetadataCache as Internal
import           Hakyll.Core.Store                  (Store)


--------------------------------------------------------------------------------
-- | Create a resource provider
newProvider :: Store                 -- ^ Store to use
            -> (FilePath -> Bool)    -- ^ Should we ignore this file?
            -> FilePath              -- ^ Search directory
            -> IO Internal.Provider  -- ^ Resulting provider
newProvider store ignore directory = do
    -- Delete metadata cache where necessary
    p <- Internal.newProvider store ignore directory
    mapM_ (Internal.resourceInvalidateMetadataCache p) $
        filter (Internal.resourceModified p) $ Internal.resourceList p
    return p