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Re: [Chicken-users] What's the current version of eggs?
From: |
Alejandro Forero Cuervo |
Subject: |
Re: [Chicken-users] What's the current version of eggs? |
Date: |
Tue, 26 Feb 2008 07:18:56 -0800 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
> For tagged eggs, the version number is the name of the most
> recently-added tag (correct)?
No. The version number is the greatest string sorting them as a human
would compare version numbers (eg. 1.12 is greater than 1.9.2, and the
date in which they were added is not relevant). There is an
exception: if the Subversion property "latest" is set in the tags/
directory, it takes precedence.
The specific logic (which I implemented a long time ago) is this:
(define (version-string->numbers string)
(map string->number (string-split string ".")))
(define (version-numbers> a b)
(and (not (null? a))
(or (null? b)
(> (car a) (car b))
(and (= (car a) (car b))
(version-numbers> (cdr a) (cdr b))))))
(define (pick-latest-version tags-dir)
(fold
(lambda (a pick)
(let ((a-nums (version-string->numbers a)))
(if (and (every number? a-nums) ; sanity check
(version-numbers>
a-nums
(version-string->numbers pick)))
a
pick)))
""
(directory tags-dir)))
Now that I think about it, perhaps this can be optimized using the
orders egg! ;-)
Thanks! :-)
Alejo.
http://azul.freaks-unidos.net/
- [Chicken-users] What's the current version of eggs?, Alejandro Forero Cuervo, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, felix winkelmann, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, Alejandro Forero Cuervo, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, Alejandro Forero Cuervo, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, felix winkelmann, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, Alejandro Forero Cuervo, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, felix winkelmann, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, Alejandro Forero Cuervo, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, felix winkelmann, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, Graham Fawcett, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?,
Alejandro Forero Cuervo <=
- Re: [Chicken-users] What's the current version of eggs?, Alejandro Forero Cuervo, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, Graham Fawcett, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, Alejandro Forero Cuervo, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, Leonardo Valeri Manera, 2008/02/26
- Re: [Chicken-users] What's the current version of eggs?, felix winkelmann, 2008/02/26
Re: [Chicken-users] What's the current version of eggs?, Peter Bex, 2008/02/26