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Re: xpath

X-seq: zsh-workers 24794
From: Peter Stephenson <p.w.stephenson@xxxxxxxxxxxx>
To: zsh-workers@xxxxxxxxxx
Subject: Re: xpath
Date: Sat, 5 Apr 2008 22:03:46 +0100
In-reply-to: <1207324882.20538.38.camel@xxxxxxx>
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References: <1207324882.20538.38.camel@xxxxxxx>

On Fri, 04 Apr 2008 09:01:22 -0700
Jack Bates <ms419@xxxxxxxxxxxxxx> wrote:
> I have need of a shell which supports *some* XPath syntax - specifically
> that for handling attributes. zsh is currently my shell of choice, and
> is quite powerful - I wonder if I can configure zsh to support this
> syntax?
> 
> I have a content repository mounted on my filesystem. Attributes are
> mapped to filesystem extended attributes. I want to use XPath
> expressions like: /myrepo/subdir/*[@user.repository_id = a16]

Just to be clear: do you need *exactly* xpath syntax, as given above?
If so, then the answer is no: this conflicts with ordinary shell syntax
where [...] specifies a character class and since any set of characters
can appear within it there's no way of interpreting it any other way.
Or are you happy with something that looks a bit like xpath syntax, and
can be converted (possibly automatically) into it?  If the latter, we
could probably come up with something using shell functions and glob
qualifiers.

-- 
Peter Stephenson <p.w.stephenson@xxxxxxxxxxxx>
Web page now at http://homepage.ntlworld.com/p.w.stephenson/

Follow-Ups:
- Re: xpath
  - From: Bart Schaefer

References:
- xpath
  - From: Jack Bates

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