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Re: [Bug-wget] [PATCH] New option: --rename-output: modify output filena

From: Tim Rühsen
Subject: Re: [Bug-wget] [PATCH] New option: --rename-output: modify output filename with perl
Date: Sat, 03 Aug 2013 16:11:59 +0200
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Ok, one step back.

We already have - conditionally compilable - PCRE library access plus POSIX 
regex for --adjust and --reject, switchable by --regex-type.

Why not use similar mechanisms for consistency ?


The content of REGEX then depends of the --regex-type (Posix is default).
--regex-type could be extended to support sh matching (fnmatch function).

The REGEX must contain a pattern for matching and a replacement string.

As a second option, we could introduce (now or later)
        --name-filter-program="program REGEX"

The 'program' answers each line it gets (the original filename) by excactly one 
output line (the new filename) as long as Wget does not close the pipe.
The 'program' needs to be started only once...

I admit, that I am not an regex expert (neither PCRE nor Posix) and I do not 
know, how a proper match/replace pattern would look like (e.g. what syntax or 
separation character should we use ?). Experts please....

The idea of having a program "to-get-it-all", e.g. meta information plus 
content via pipe and/or environment vars, should be another project whenever 
the need arises (i think is not the case right now).

Regards, Tim

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