diff options
Diffstat (limited to 'Utility/Path.hs')
| -rw-r--r-- | Utility/Path.hs | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/Utility/Path.hs b/Utility/Path.hs index c3e893d16..7427bfe27 100644 --- a/Utility/Path.hs +++ b/Utility/Path.hs @@ -126,14 +126,19 @@ absPath file = do - relPathCwdToFile "/tmp/foo/bar" == "" -} relPathCwdToFile :: FilePath -> IO FilePath -relPathCwdToFile f = relPathDirToFile <$> getCurrentDirectory <*> absPath f +relPathCwdToFile f = do + c <- getCurrentDirectory + relPathDirToFile c f -{- Constructs a relative path from a directory to a file. - - - - Both must be absolute, and cannot contain .. etc. (eg use absPath first). +{- Constructs a relative path from a directory to a file. -} +relPathDirToFile :: FilePath -> FilePath -> IO FilePath +relPathDirToFile from to = relPathDirToFileAbs <$> absPath from <*> absPath to + +{- This requires the first path to be absolute, and the + - second path cannot contain ../ or ./ -} -relPathDirToFile :: FilePath -> FilePath -> FilePath -relPathDirToFile from to = join s $ dotdots ++ uncommon +relPathDirToFileAbs :: FilePath -> FilePath -> FilePath +relPathDirToFileAbs from to = join s $ dotdots ++ uncommon where s = [pathSeparator] pfrom = split s from @@ -149,7 +154,7 @@ prop_relPathDirToFile_basics from to | from == to = null r | otherwise = not (null r) where - r = relPathDirToFile from to + r = relPathDirToFileAbs from to prop_relPathDirToFile_regressionTest :: Bool prop_relPathDirToFile_regressionTest = same_dir_shortcurcuits_at_difference @@ -158,7 +163,7 @@ prop_relPathDirToFile_regressionTest = same_dir_shortcurcuits_at_difference - location, but it's not really the same directory. - Code used to get this wrong. -} same_dir_shortcurcuits_at_difference = - relPathDirToFile (joinPath [pathSeparator : "tmp", "r", "lll", "xxx", "yyy", "18"]) + relPathDirToFileAbs (joinPath [pathSeparator : "tmp", "r", "lll", "xxx", "yyy", "18"]) (joinPath [pathSeparator : "tmp", "r", ".git", "annex", "objects", "18", "gk", "SHA256-foo", "SHA256-foo"]) == joinPath ["..", "..", "..", "..", ".git", "annex", "objects", "18", "gk", "SHA256-foo", "SHA256-foo"] @@ -187,7 +192,7 @@ relHome :: FilePath -> IO String relHome path = do home <- myHomeDir return $ if dirContains home path - then "~/" ++ relPathDirToFile home path + then "~/" ++ relPathDirToFileAbs home path else path {- Checks if a command is available in PATH. |