77 lines
3.2 KiB
Haskell
77 lines
3.2 KiB
Haskell
{- git-annex standard repository groups
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-
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- Copyright 2012 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Types.StandardGroups where
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data StandardGroup
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= ClientGroup
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| TransferGroup
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| BackupGroup
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| IncrementalBackupGroup
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| SmallArchiveGroup
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| FullArchiveGroup
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| SourceGroup
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| ManualGroup
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| UnwantedGroup
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deriving (Eq, Ord, Enum, Bounded, Show)
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fromStandardGroup :: StandardGroup -> String
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fromStandardGroup ClientGroup = "client"
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fromStandardGroup TransferGroup = "transfer"
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fromStandardGroup BackupGroup = "backup"
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fromStandardGroup IncrementalBackupGroup = "incrementalbackup"
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fromStandardGroup SmallArchiveGroup = "smallarchive"
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fromStandardGroup FullArchiveGroup = "archive"
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fromStandardGroup SourceGroup = "source"
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fromStandardGroup ManualGroup = "manual"
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fromStandardGroup UnwantedGroup = "unwanted"
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toStandardGroup :: String -> Maybe StandardGroup
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toStandardGroup "client" = Just ClientGroup
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toStandardGroup "transfer" = Just TransferGroup
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toStandardGroup "backup" = Just BackupGroup
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toStandardGroup "incrementalbackup" = Just IncrementalBackupGroup
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toStandardGroup "smallarchive" = Just SmallArchiveGroup
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toStandardGroup "archive" = Just FullArchiveGroup
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toStandardGroup "source" = Just SourceGroup
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toStandardGroup "manual" = Just ManualGroup
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toStandardGroup "unwanted" = Just UnwantedGroup
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toStandardGroup _ = Nothing
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descStandardGroup :: StandardGroup -> String
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descStandardGroup ClientGroup = "client: a repository on your computer"
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descStandardGroup TransferGroup = "transfer: distributes files to clients"
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descStandardGroup BackupGroup = "full backup: backs up all files"
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descStandardGroup IncrementalBackupGroup = "incremental backup: backs up files not backed up elsewhere"
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descStandardGroup SmallArchiveGroup = "small archive: archives files located in \"archive\" directories"
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descStandardGroup FullArchiveGroup = "full archive: archives all files not archived elsewhere"
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descStandardGroup SourceGroup = "file source: moves files on to other repositories"
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descStandardGroup ManualGroup = "manual mode: only stores files you manually choose"
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descStandardGroup UnwantedGroup = "unwanted: remove content from this repository"
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{- See doc/preferred_content.mdwn for explanations of these expressions. -}
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preferredContent :: StandardGroup -> String
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preferredContent ClientGroup = lastResort
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"exclude=*/archive/* and exclude=archive/*"
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preferredContent TransferGroup = lastResort $
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"not (inallgroup=client and copies=client:2) and " ++ preferredContent ClientGroup
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preferredContent BackupGroup = "include=*"
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preferredContent IncrementalBackupGroup = lastResort $
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"include=* and (not copies=incrementalbackup:1)"
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preferredContent SmallArchiveGroup = lastResort $
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"(include=*/archive/* or include=archive/*) and " ++ preferredContent FullArchiveGroup
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preferredContent FullArchiveGroup = lastResort $
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"not (copies=archive:1 or copies=smallarchive:1)"
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preferredContent SourceGroup = "not (copies=1)"
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preferredContent ManualGroup = lastResort $
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"present and exclude=*/archive/* and exclude=archive/*"
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preferredContent UnwantedGroup = "exclude=*"
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{- Most repositories want any content that is only on untrusted
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- or dead repositories. -}
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lastResort :: String -> String
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lastResort s = "(" ++ s ++ ") or (not copies=semitrusted:1)"
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