301 lines
9.1 KiB
Haskell
301 lines
9.1 KiB
Haskell
{-# LANGUAGE ApplicativeDo #-}
|
|
{-# LANGUAGE RecordWildCards #-}
|
|
|
|
module Opts where
|
|
|
|
import Data.Bool
|
|
import Data.List
|
|
import Data.Maybe
|
|
import Data.Version (showVersion)
|
|
import Options.Applicative
|
|
import Paths_werge (version)
|
|
|
|
data Tokenizer
|
|
= TokenizeFilter String
|
|
| TokenizeCharCategory
|
|
| TokenizeCharCategorySimple
|
|
deriving (Show)
|
|
|
|
tokenizer :: Parser Tokenizer
|
|
tokenizer =
|
|
asum
|
|
[ TokenizeFilter
|
|
<$> strOption
|
|
(long "tok-filter"
|
|
<> short 'F'
|
|
<> metavar "FILTER"
|
|
<> help "External program to separate the text to tokens")
|
|
, flag'
|
|
TokenizeCharCategorySimple
|
|
(long "simple-tokens"
|
|
<> short 'i'
|
|
<> help
|
|
"Use wider character class to separate the tokens (results in larger tokens and ignores case)")
|
|
, flag'
|
|
TokenizeCharCategory
|
|
(long "full-tokens"
|
|
<> short 'I'
|
|
<> help
|
|
"Separate characters by all known character classes (default)")
|
|
, pure TokenizeCharCategory
|
|
]
|
|
|
|
data ConflictMask = ConflictMask
|
|
{ cmResolveOverlaps :: Bool
|
|
, cmResolveSeparate :: Bool
|
|
} deriving (Show)
|
|
|
|
conflictMask :: String -> String -> Parser ConflictMask
|
|
conflictMask label objs = do
|
|
cmResolveOverlaps' <-
|
|
fmap not . switch
|
|
$ long (label ++ "-overlaps")
|
|
<> help ("Never resolve overlapping changes in " ++ objs)
|
|
cmResolveSeparate' <-
|
|
fmap not . switch
|
|
$ long (label ++ "-separate")
|
|
<> help
|
|
("Never resolve separate (non-overlapping) changes in " ++ objs)
|
|
cmAll <-
|
|
fmap not . switch
|
|
$ long (label ++ "-all") <> help ("Never resolve any changes in " ++ objs)
|
|
pure
|
|
ConflictMask
|
|
{ cmResolveSeparate = cmResolveSeparate' && cmAll
|
|
, cmResolveOverlaps = cmResolveOverlaps' && cmAll
|
|
}
|
|
|
|
data Resolution
|
|
= ResolveKeep
|
|
| ResolveMy
|
|
| ResolveOld
|
|
| ResolveYour
|
|
deriving (Show, Eq)
|
|
|
|
resolutionMode :: String -> Either String Resolution
|
|
resolutionMode x
|
|
| x `isPrefixOf` "keep" = Right ResolveKeep
|
|
| x `isPrefixOf` "my" = Right ResolveMy
|
|
| x `isPrefixOf` "old" = Right ResolveOld
|
|
| x `isPrefixOf` "your" = Right ResolveYour
|
|
| otherwise =
|
|
Left
|
|
$ "Could not parse value `"
|
|
++ x
|
|
++ "', use one of `keep', `my', `old', and `your'"
|
|
|
|
data SpaceResolution
|
|
= SpaceNormal
|
|
| SpaceSpecial Resolution
|
|
deriving (Show, Eq)
|
|
|
|
spaceMode :: String -> Either String SpaceResolution
|
|
spaceMode x
|
|
| x `isPrefixOf` "normal" = Right SpaceNormal
|
|
| Right y <- resolutionMode x = Right (SpaceSpecial y)
|
|
| otherwise =
|
|
Left
|
|
$ "Could not parse value `"
|
|
++ x
|
|
++ "', use one of `normal', `keep', `my', `old', and `your'"
|
|
|
|
data Config = Config
|
|
{ cfgTokenizer :: Tokenizer
|
|
, cfgZealous :: Bool
|
|
, cfgSpaceRetain :: Resolution
|
|
, cfgSpaceResolution :: SpaceResolution
|
|
, cfgSpaceConflicts :: ConflictMask
|
|
, cfgContext :: Int
|
|
, cfgResolution :: Resolution
|
|
, cfgConflicts :: ConflictMask
|
|
, cfgLabelStart :: String
|
|
, cfgLabelMyOld :: String
|
|
, cfgLabelDiff :: String
|
|
, cfgLabelOldYour :: String
|
|
, cfgLabelEnd :: String
|
|
} deriving (Show)
|
|
|
|
config :: Parser Config
|
|
config = do
|
|
cfgTokenizer <- tokenizer
|
|
cfgZealous <-
|
|
asum
|
|
[ flag' False $ long "no-zeal" <> help "avoid zealous mode (default)"
|
|
, flag' True
|
|
$ long "zeal"
|
|
<> short 'z'
|
|
<> help
|
|
"Try to zealously minify conflicts, potentially resolving them"
|
|
, pure False
|
|
]
|
|
cfgSpaceRetain <-
|
|
option (eitherReader resolutionMode)
|
|
$ long "space"
|
|
<> short 'S'
|
|
<> metavar "(keep|my|old|your)"
|
|
<> help
|
|
"Retain spacing from a selected version, or keep all space changes for merging (default: keep)"
|
|
<> value ResolveKeep
|
|
cfgSpaceResolution <-
|
|
asum
|
|
[ flag' (SpaceSpecial ResolveKeep)
|
|
$ short 's'
|
|
<> help
|
|
"Shortcut for `--resolve-space keep' (this separates space-only conflicts, enabling better automated resolution)"
|
|
, option (eitherReader spaceMode)
|
|
$ long "resolve-space"
|
|
<> metavar ("(normal|keep|my|old|your)")
|
|
<> value SpaceNormal
|
|
<> help
|
|
"Resolve conflicts in space-only tokens separately, and either keep unresolved conflicts, or resolve in favor of a given version; `normal' resolves the spaces together with other tokens, ignoring choices in --resolve-space-* (default: normal)"
|
|
]
|
|
cfgSpaceConflicts <- conflictMask "conflict-space" "space-only tokens"
|
|
cfgContext <-
|
|
option auto
|
|
$ long "expand-context"
|
|
<> short 'C'
|
|
<> metavar "N"
|
|
<> value 2
|
|
<> showDefault
|
|
<> help
|
|
"Consider changes that are at less than N tokens apart to be a single change; 0 turns off conflict expansion, 1 may cause bad resolutions of near conflicting edits"
|
|
cfgResolution <-
|
|
option (eitherReader resolutionMode)
|
|
$ long "resolve"
|
|
<> metavar "(keep|my|old|your)"
|
|
<> value ResolveKeep
|
|
<> help
|
|
"Resolve general conflicts in favor of a given version, or keep the conflicts (default: keep)"
|
|
cfgConflicts <- conflictMask "conflict" "general tokens"
|
|
color <-
|
|
flag False True
|
|
$ long "color"
|
|
<> short 'G'
|
|
<> help
|
|
"Use shorter, gaily colored output markers by default (requires ANSI color support; good for terminals or `less -R')"
|
|
labelStart <-
|
|
optional . strOption
|
|
$ long "label-start"
|
|
<> metavar "\"<<<<<\""
|
|
<> help "Label for beginning of the conflict"
|
|
labelMyOld <-
|
|
optional . strOption
|
|
$ long "label-mo"
|
|
<> metavar "\"|||||\""
|
|
<> help "Separator of local edits and original"
|
|
labelDiff <-
|
|
optional . strOption
|
|
$ long "label-diff"
|
|
<> metavar "\"|||||\""
|
|
<> help "Separator for old and new version"
|
|
labelOldYour <-
|
|
optional . strOption
|
|
$ long "label-oy"
|
|
<> metavar "\"=====\""
|
|
<> help "Separator of original and other people's edits"
|
|
labelEnd <-
|
|
optional . strOption
|
|
$ long "label-end"
|
|
<> metavar "\">>>>>\""
|
|
<> help "Label for end of the conflict"
|
|
pure
|
|
Config
|
|
{ cfgLabelStart =
|
|
bool "<<<<<" "\ESC[1;37m<\ESC[0;31m" color `fromMaybe` labelStart
|
|
, cfgLabelMyOld =
|
|
bool "|||||" "\ESC[1;37m|\ESC[1;30m" color `fromMaybe` labelMyOld
|
|
, cfgLabelDiff =
|
|
bool "|||||" "\ESC[1;37m|\ESC[0;32m" color `fromMaybe` labelDiff
|
|
, cfgLabelOldYour =
|
|
bool "=====" "\ESC[1;37m=\ESC[0;32m" color `fromMaybe` labelOldYour
|
|
, cfgLabelEnd =
|
|
bool ">>>>>" "\ESC[1;37m>\ESC[0m" color `fromMaybe` labelEnd
|
|
, ..
|
|
}
|
|
|
|
data Command
|
|
= CmdDiff3
|
|
{ d3my :: FilePath
|
|
, d3old :: FilePath
|
|
, d3your :: FilePath
|
|
}
|
|
| CmdGitMerge
|
|
{ gmFiles :: Maybe [FilePath]
|
|
, gmDoAdd :: Bool
|
|
}
|
|
| CmdDiff
|
|
{ diffOld :: FilePath
|
|
, diffNew :: FilePath
|
|
}
|
|
deriving (Show)
|
|
|
|
cmdDiff3 :: Parser Command
|
|
cmdDiff3 = do
|
|
d3my <- strArgument $ metavar "MYFILE" <> help "Version with local edits"
|
|
d3old <- strArgument $ metavar "OLDFILE" <> help "Original file version"
|
|
d3your <-
|
|
strArgument $ metavar "YOURFILE" <> help "Version with other people's edits"
|
|
pure CmdDiff3 {..}
|
|
|
|
cmdGitMerge :: Parser Command
|
|
cmdGitMerge = do
|
|
gmFiles <-
|
|
asum
|
|
[ fmap Just . some
|
|
$ strArgument
|
|
$ metavar "UNMERGED"
|
|
<> help
|
|
"Unmerged file tracked by git (can be specified repeatedly)"
|
|
, flag'
|
|
Nothing
|
|
(long "unmerged"
|
|
<> short 'u'
|
|
<> help "Process all files marked as unmerged by git")
|
|
]
|
|
gmDoAdd <-
|
|
asum
|
|
[ flag'
|
|
True
|
|
(long "add"
|
|
<> short 'a'
|
|
<> help "Run `git add' for fully merged files")
|
|
, flag' False (long "no-add" <> help "Prevent running `git add'")
|
|
, pure False
|
|
]
|
|
pure CmdGitMerge {..}
|
|
|
|
cmdDiff :: Parser Command
|
|
cmdDiff = do
|
|
diffOld <- strArgument $ metavar "OLDFILE" <> help "Original file version"
|
|
diffNew <- strArgument $ metavar "NEWFILE" <> help "File version with changes"
|
|
pure CmdDiff {..}
|
|
|
|
-- TODO have some option to output the (partially merged) my/old/your files so
|
|
-- that folks can continue with external program or so (such as meld)
|
|
cmd :: Parser Command
|
|
cmd =
|
|
hsubparser
|
|
$ mconcat
|
|
[ command "merge"
|
|
$ info cmdDiff3
|
|
$ progDesc "diff3-style merge of two changesets"
|
|
, command "git"
|
|
$ info cmdGitMerge
|
|
$ progDesc "Automerge unmerged files in git conflict"
|
|
, command "diff"
|
|
$ info cmdDiff
|
|
$ progDesc "Highlight differences between two files"
|
|
]
|
|
|
|
parseOpts :: IO (Config, Command)
|
|
parseOpts =
|
|
customExecParser (prefs helpShowGlobals)
|
|
$ info
|
|
(liftA2 (,) config cmd
|
|
<**> helper
|
|
<**> simpleVersioner (showVersion version))
|
|
(fullDesc
|
|
<> header
|
|
"werge -- blanks-friendly mergetool for tiny interdwindled changes"
|
|
<> footer "werge is a free software, use it accordingly.")
|