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From: Alexey Tourbin <at@altlinux.ru>
To: ALT Devel discussion list <devel@lists.altlinux.org>
Subject: Re: [devel] [git update] packages/file: tags/4.19-alt2
Date: Wed, 28 Feb 2007 20:26:35 +0300
Message-ID: <20070228172635.GJ32320@localhost.localdomain> (raw)
In-Reply-To: <20070228163837.GI32320@localhost.localdomain>

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On Wed, Feb 28, 2007 at 07:38:37PM +0300, Alexey Tourbin wrote:
> On Wed, Feb 28, 2007 at 06:55:27PM +0300, Alexey Tourbin wrote:
> > > По какому правилу он определился как Perl5 module source text?
> > 
> > $ egrep '^package[ \t]+[A-Za-z][^.;]*;' /usr/lib/perl5/pod/perlfunc.pod
> > package in more than one place; it merely influences which symbol table
> > $
> > 
> > Хе-хе, лажа какая.  Сейчас исправлю.
> 
> Там размер регулярного выражения ограничен 32 байтами.  То есть я
> нормальное регвыражение написал, но скомпилировать magic теперь не
> получается.  А если увеличить место под строку регулярного выражения,
> то он опять не компилируется, потому что там фиксированное место под
> дисковую структуру.
> 
> 32 байта под регулярное выражение для определения типа файла -- это они
> дураки или придуряются?

Эврика!!

0       regex           ^package[[:space:]]+            1
>0      regex           ^[A-Za-z_][A-Za-z0-9_]*         2
>>0     regex           ^(::[A-Za-z_][A-Za-z0-9_]*)*    3
>>>0    regex           ^[[:space:]]*;                  YES

$ file -m file/magic/Magdir/perl /usr/lib/perl5/strict.pm
/usr/lib/perl5/strict.pm: 1 2 3 YES
$

> commit 397f39398ea30bead80d46bb8ccdcb69f34c5b71
> Author: Alexey Tourbin <at@altlinux>
> Date:   Wed Feb 28 19:14:33 2007 +0300
> 
>     magic/Magdir/perl: use rigorous regular expression for Perl5 modules
> 
> diff --git a/file/magic/Magdir/perl b/file/magic/Magdir/perl
> index 2e989d7..1244b10 100644
> --- a/file/magic/Magdir/perl
> +++ b/file/magic/Magdir/perl
> @@ -14,7 +14,7 @@
>  0	string		eval\ '(exit\ $?0)'\ &&\ eval\ 'exec	perl script text
>  
>  # a couple more, by ldv
> -0	regex		\^package[\ \	]+[A-Za-z][^.;]*;		Perl5 module source text
> +0	regex		\^package[[:space:]]+[A-Za-z_][A-Za-z0-9_]*(::[A-Za-z_][A-Za-z0-9_]*)*[[:space:]]*;		Perl5 module source text
>  
>  # Perl POD documents
>  # From: Tom Hukins <tom@eborcom.com>



> _______________________________________________
> Devel mailing list
> Devel@lists.altlinux.org
> https://lists.altlinux.org/mailman/listinfo/devel


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  reply	other threads:[~2007-02-28 17:26 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-28  7:26 ` Alexey Tourbin
2007-02-28 13:09   ` Dmitry V. Levin
2007-02-28 15:46     ` Alexey Tourbin
2007-02-28 15:55       ` Alexey Tourbin
2007-02-28 16:38         ` Alexey Tourbin
2007-02-28 17:26           ` Alexey Tourbin [this message]
2007-02-28 18:24             ` Alexey Tourbin

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