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Julian Ospald cfe626b6d4
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README.md

HPath

Support for well-typed paths in Haskell. Also provides ByteString based filepath manipulation.

Motivation

The motivation came during development of hsfm which has a pretty strict File type, but lacks a strict Path type, e.g. for user input.

The library that came closest to my needs was path, but the API turned out to be oddly complicated for my use case, so I decided to fork it.

Similarly, posix-paths was exactly what I wanted for the low-level operations, but upstream seems dead, so it is forked as well and merged into this library.

Differences to ‘path’

  • doesn’t attempt to fake IO-related information into the path, so whether a path points to a file or directory is up to your IO-code to decide...
  • trailing path separators will be preserved if they exist, no messing with that
  • uses safe ByteString for filepaths under the hood instead of unsafe String
  • fixes broken dirname
  • renames dirname/filename to basename/dirname to match the POSIX shell functions
  • introduces a new Path Fn for safe filename guarantees and a RelC class
  • allows pattern matching via unidirectional PatternSynonym
  • uses simple doctest for testing
  • allows ~/ as relative path, because on posix level ~ is just a regular filename that does NOT point to $HOME
  • remove TH, it sucks

Differences to ‘posix-paths’

  • hasTrailingPathSeparator behaves in the same way as System.FilePath
  • dropTrailingPathSeparator behaves in the same way as System.FilePath
  • added various functions like isValid, normalise and equalFilePath
  • uses the word8 package for save word8 literals instead of OverloadedStrings
  • has custom versions of openFd and getDirectoryContents