3a05d53761
No behavior changes (hopefully), just adding SeekInput and plumbing it through to the JSON display code for later use. Over the course of 2 grueling days. withFilesNotInGit reimplemented in terms of seekHelper should be the only possible behavior change. It seems to test as behaving the same. Note that seekHelper dummies up the SeekInput in the case where segmentPaths' gives up on sorting the expanded paths because there are too many input paths. When SeekInput later gets exposed as a json field, that will result in it being a little bit wrong in the case where 100 or more paths are passed to a git-annex command. I think this is a subtle enough problem to not matter. If it does turn out to be a problem, fixing it would require splitting up the input parameters into groups of < 100, which would make git ls-files run perhaps more than is necessary. May want to revisit this, because that fix seems fairly low-impact.
128 lines
4.3 KiB
Haskell
128 lines
4.3 KiB
Haskell
{- git-annex command data types
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-
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- Copyright 2010-2019 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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module Types.Command where
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import Data.Ord
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import Options.Applicative.Types (Parser)
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import Types
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import Types.DeferredParse
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import Types.ActionItem
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{- A command runs in these stages.
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-
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- a. The parser stage parses the command line and generates a CommandSeek
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- action. -}
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type CommandParser = Parser CommandSeek
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{- b. The check stage runs checks, that error out if
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- anything prevents the command from running. -}
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data CommandCheck = CommandCheck { idCheck :: Int, runCheck :: Annex () }
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{- c. The seek stage is passed input from the parser, looks through
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- the repo to find things to act on (ie, new files to add), and
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- runs commandAction to handle all necessary actions. -}
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type CommandSeek = Annex ()
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{- d. The start stage is run before anything is output, is passed some
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- value from the seek stage, and can check if anything needs to be
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- done, and early abort if not. It should run quickly and should
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- not modify Annex state or output anything. -}
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type CommandStart = Annex (Maybe (StartMessage, CommandPerform))
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{- e. The perform stage is run after a message is printed about the command
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- being run, and it should be where the bulk of the work happens. -}
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type CommandPerform = Annex (Maybe CommandCleanup)
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{- f. The cleanup stage is run only if the perform stage succeeds, and it
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- returns the overall success/fail of the command. -}
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type CommandCleanup = Annex Bool
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{- Input that was seeked on to make an ActionItem. Eg, the input filename,
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- or directory name. -}
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newtype SeekInput = SeekInput [String]
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deriving (Show)
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{- Message that is displayed when starting to perform an action on
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- something. The String is typically the name of the command or action
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- being performed.
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-}
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data StartMessage
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= StartMessage String ActionItem SeekInput
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| StartUsualMessages String ActionItem SeekInput
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-- ^ Like StartMessage, but makes sure to enable usual message
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-- display in case it was disabled by cmdnomessages.
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| StartNoMessage ActionItem
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-- ^ Starts, without displaying any message but also without
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-- disabling display of any of the usual messages.
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| CustomOutput ActionItem
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-- ^ Prevents any start, end, or other usual messages from
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-- being displayed, letting a command output its own custom format.
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deriving (Show)
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instance MkActionItem StartMessage where
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mkActionItem (StartMessage _ ai _) = ai
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mkActionItem (StartUsualMessages _ ai _) = ai
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mkActionItem (StartNoMessage ai) = ai
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mkActionItem (CustomOutput ai) = ai
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{- A command is defined by specifying these things. -}
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data Command = Command
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{ cmdcheck :: [CommandCheck]
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-- ^ check stage
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, cmdnocommit :: Bool
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-- ^ don't commit journalled state changes
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, cmdnomessages :: Bool
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-- ^ don't output normal messages
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, cmdname :: String
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, cmdparamdesc :: CmdParamsDesc
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-- ^ description of params for usage
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, cmdsection :: CommandSection
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, cmddesc :: String
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-- ^ description of command for usage
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, cmdparser :: CommandParser
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-- ^ command line parser
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, cmdglobaloptions :: [GlobalOption]
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-- ^ additional global options
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, cmdnorepo :: Maybe (Parser (IO ()))
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-- ^used when not in a repo
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}
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{- Command-line parameters, after the command is selected and options
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- are parsed. -}
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type CmdParams = [String]
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type CmdParamsDesc = String
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{- CommandCheck functions can be compared using their unique id. -}
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instance Eq CommandCheck where
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a == b = idCheck a == idCheck b
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instance Eq Command where
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a == b = cmdname a == cmdname b
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{- Order commands by name. -}
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instance Ord Command where
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compare = comparing cmdname
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{- The same sections are listed in doc/git-annex.mdwn -}
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data CommandSection
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= SectionCommon
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| SectionSetup
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| SectionMaintenance
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| SectionQuery
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| SectionMetaData
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| SectionUtility
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| SectionPlumbing
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| SectionTesting
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deriving (Eq, Ord, Enum, Bounded)
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descSection :: CommandSection -> String
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descSection SectionCommon = "Commonly used commands"
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descSection SectionSetup = "Repository setup commands"
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descSection SectionMaintenance = "Repository maintenance commands"
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descSection SectionQuery = "Query commands"
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descSection SectionMetaData = "Metadata commands"
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descSection SectionUtility = "Utility commands"
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descSection SectionPlumbing = "Plumbing commands"
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descSection SectionTesting = "Testing commands"
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