[darcs-users] 1.0.8 / 1.0.6 interop errors?

Eric Y. Kow eric.kow at gmail.com
Sun Jul 9 13:21:36 UTC 2006

On Sun, Jul 09, 2006 at 08:44:07 -0400, David Roundy wrote:
> > I wonder if it would be super-ugly for us to make a wrapper script
> > that calls cygpath on all arguments.  Or if there exists a library
> > version or something that we could invoke via FFI.
> Indeed, that would be a reasonable approach.  We'd just need something
> like a "work around cygwin" flag to control this behavior?

grepping the source code shows
   gitlib.c:#ifdef __CYGWIN__

I'm guessing this flag is set when compiling against cygwin

So here's what I propose as a set of actions a Windows developer
might undertake (any volunteers?)

Plan A
1. Determine if the cygwin lib exposes the path handling bits
   used to make Windows and cygpaths transparant (as Olivier
   mentions).  Is it a black box, or can we just invoke the
   stuff ourselves?

2. If we can invoke it ourselves, write an FFI wrapper for
   said functions

Plan B
1. Look at the Cygpath C++ source: http://tinyurl.com/famkm

2. Reimplement in 3 lines of Haskell or less :-) 

Plans A+B
3. Provide a function
     windowsToUnixPath :: FilePath -> FilePath
   that translates filepaths like "Z:\Program Files\Foo\Bar"
   into /cygpath/z/foo/bar

4. Wrap the relevant SSH functions with something like

   #ifdef __CYGWIN
     paths = map windowsToUnixPath paths_
     paths = paths_

Does this sound right?  Any takers?

Eric Kow                     http://www.loria.fr/~kow
PGP Key ID: 08AC04F9         Merci de corriger mon français.
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