Em 12/06/2011, às 14:00, Lars Tandle Kyllingstad <[email protected]>
escreveu:
On Sun, 2011-06-12 at 13:36 -0300, Jose Armando Garcia wrote:
On Sun, Jun 12, 2011 at 12:59 PM, Lars Tandle Kyllingstad
<[email protected]> wrote:
On Sun, 2011-06-12 at 12:41 -0300, Jose Armando Garcia wrote:
On Sun, Jun 12, 2011 at 12:15 PM, Lars Tandle Kyllingstad
<[email protected]> wrote:
On Sun, 2011-06-12 at 11:39 -0300, Jose Armando Garcia wrote:
On Wed, Jun 8, 2011 at 4:29 PM, Lars Tandle Kyllingstad
These functions are from the old std.path, and I haven't made any
changes to them in my version.
- toAbsolute()
- toCanonical()
In the comments where you say that it doesn't perform any IO you
should add these functions.
Does getcwd() perform any IO on Windows? AFAIK, on POSIX it just
queries /proc/self/cwd, which is a virtual file.
The way I look at IO is anything that is external to the process.
Another way to thinking about it is that
toAbsolute()'s and toCanonical()'s result is dependent on state
outside of the process. While the rest of the templates/functions
aren't.
The way I've interpreted the "no IO" principle of std.path is "no
disk/network IO", since those would come with an enormous performance
penalty as compared to in-memory operations. But maybe you are right.
Speaking of which can we add a template
called normalize (maybe you can come up with a better name) that
does
what canonical does but doesn't make it absolute. E.g.:
version(windows) assert(normilize("dir/file") == "dir\\file");
version(windows) assert(normilize("dir/./file") == "dir\\file");
//etc
That sounds like a good idea. Then I guess normalize("../foo")
should
just return "..\\foo", i.e. leave the ".." unresolved?
It is hard to resolve '..' without looking at the file system when
considering soft/sym link due to multiple parents. if 'somedir' is a
simlink "somedir/../" != ".".
That is a matter of choice, I guess. In both bash and zsh, if I type
cd some_dir/some_symlink/..
I end up in some_dir, regardless of where some_symlink is pointing.
That is how toCanonical() does things as well, and how I think
normalize() should work if I end up adding that.
But most program dont behave this way. For example ls, less and vim
don't do that. I am okay with resolving symlinks but just take note.
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