From: Pea <zsh@raveland.org>
To: Peter Stephenson <pws@csr.com>
Cc: zsh-workers@sunsite.dk
Subject: Re: _canonical_path not working on *BSD
Date: Wed, 26 Mar 2008 17:38:24 +0100 [thread overview]
Message-ID: <20080326173824.0a55c00d@coredump.raveland.priv> (raw)
In-Reply-To: <200803261621.m2QGLptV017966@news01.csr.com>
Le Wed, 26 Mar 2008 16:21:51 +0000,
Peter Stephenson <pws@csr.com> a écrit :
> Peter Stephenson wrote:
> > Hmm... sorry about all the traffic... actually, it still doesn't
> > guarantee to give a canonical path as "readlink -f" does, since it
> > doesn't check if the value returned is itself a symbolic link, and
> > also it returns empty instead of the original file if it wasn't a
> > link. We would need to do something like the following... if I've
> > correctly divined that the intention in both cases is that if a
> > file exists at all we should always use the name, but converted to
> > the canonical form.
>
> Sigh. Or even this. This time, I've guarded against loops in the
> symbolic links.
>
> I'm still not quite sure what the test of the status from readlink in
> the second case was for, seeing as "readlink -qf /nonexistent" returns
> status 0. I've interpreted it as a test for a file that actually
> exists. In the present context it may not matter.
>
> Index: Completion/Unix/Type/_canonical_paths
> ===================================================================
> RCS file: /cvsroot/zsh/zsh/Completion/Unix/Type/_canonical_paths,v
> retrieving revision 1.1
> diff -u -r1.1 _canonical_paths
> --- Completion/Unix/Type/_canonical_paths 28 May 2006 18:36:06
> -0000 1.1 +++ Completion/Unix/Type/_canonical_paths 26
> Mar 2008 16:16:14 -0000 @@ -27,18 +27,38 @@
>
> shift 2
>
> -if (( ! $+commands[readlink] )); then
> +if ! zmodload -F zsh/stat b:zstat 2>/dev/null; then
> _wanted "$tag" expl "$desc" compadd $__gopts $@ && ret=0
> return ret
> fi
>
> +typeset REPLY
> typeset -a matches files
>
> +_canonical_paths_get_canonical_path() {
> + typeset newfile
> + typeset -A seen
> +
> + REPLY=$1
> + # Guard against loops.
> + while [[ -z ${seen[$REPLY]} ]]; do
> + seen[$REPLY]=1
> + newfile=$(zstat +link $REPLY 2>/dev/null)
> + if [[ -n $newfile ]]; then
> + REPLY=$newfile
> + else
> + break
> + fi
> + done
> +}
> +
> +
> if (( $__opts[(I)-N] )); then
> files=($@)
> else
> for __index in $@; do
> - files+=$(readlink -qf $__index)
> + _canonical_paths_get_canonical_path $__index
> + files+=($REPLY)
> done
> fi
>
> @@ -48,8 +68,9 @@
> expref=${~origpref}
> [[ $origpref == (|*/). ]] && rltrim=.
> curpref=${${expref%$rltrim}:-./}
> - canpref=$(readlink -qf $curpref)
> - if [[ $? -eq 0 ]]; then
> + if zstat $curpref >&/dev/null; then
> + _canonical_paths_get_canonical_path $curpref
> + canpref=$REPLY
> [[ $curpref == */ && $canpref == *[^/] ]] && canpref+=/
> canpref+=$rltrim
> [[ $expref == *[^/] && $canpref == */ ]] && origpref+=/
>
>
This almost works:
umount [TAB] gives me:
[pea@coredump:~]% umount
/ /dev/sd0a /dev/svnd0a /home/pea
umout /[TAB] gives me:
[pea@coredump:~]% umount /
/ /dev/sd0a /dev/svnd0a /home/pea
But umount /d[TAB] or umount /de[TAB] or umount /h[TAB] give me
nothing...
It worked with readlinks
next prev parent reply other threads:[~2008-03-26 16:38 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-26 10:44 Baptiste Daroussin
2008-03-26 15:01 ` Debian bugs (Re: _canonical_path not working on *BSD) Bart Schaefer
2008-03-26 15:25 ` Clint Adams
2008-03-26 15:05 ` _canonical_path not working on *BSD Peter Stephenson
2008-03-26 15:27 ` Baptiste Daroussin
2008-03-26 15:34 ` Peter Stephenson
2008-03-26 15:51 ` Pea
2008-03-26 15:59 ` Clint Adams
2008-03-26 15:21 ` Pea
2008-03-26 15:36 ` Bart Schaefer
2008-03-26 15:40 ` Peter Stephenson
2008-03-26 16:04 ` Peter Stephenson
2008-03-26 16:18 ` Bart Schaefer
2008-03-26 16:21 ` Peter Stephenson
2008-03-26 16:38 ` Pea [this message]
2008-03-26 16:46 ` Peter Stephenson
2008-03-26 17:08 ` Pea
2008-03-26 17:17 ` Baptiste Daroussin
2008-03-27 10:23 ` Peter Stephenson
2008-03-27 11:08 ` Pea
2008-03-27 11:25 ` Peter Stephenson
2008-03-27 12:15 ` PATCH: cd -q (was Re: _canonical_path ...) Peter Stephenson
2008-03-27 12:25 ` Stephane Chazelas
2008-03-27 12:35 ` Mikael Magnusson
2008-03-27 12:48 ` Peter Stephenson
2008-03-27 12:56 ` Mikael Magnusson
2008-03-27 18:45 ` Peter Stephenson
2008-03-28 8:16 ` Pea
2008-03-28 11:01 ` Mikael Magnusson
2008-03-28 14:35 ` Peter Stephenson
2008-03-27 12:31 ` _canonical_path not working on *BSD Pea
2008-03-27 15:39 ` Bart Schaefer
2008-03-27 18:06 ` Peter Stephenson
2008-03-28 1:01 ` Bart Schaefer
2008-03-28 7:51 ` Mikael Magnusson
2008-03-28 10:01 ` Peter Stephenson
2008-03-26 16:25 ` Pea
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