linux-kernel - Re: Replace strings across all the files using script

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Message-ID: <1400270191.12373.12.camel@joe-AO725>
Date:	Fri, 16 May 2014 12:56:31 -0700
From:	Joe Perches <joe@...ches.com>
To:	anish singh <anish198519851985@...il.com>
Cc:	linux-kernel-mail <linux-kernel@...r.kernel.org>
Subject: Re: Replace strings across all the files using script

On Fri, 2014-05-16 at 12:07 -0700, anish singh wrote:
> I am planning to do some cleanup and want to
> replace some string as below across all the files
> in kernel.
>   pr_err("%s "
> TO
>   pr_err("%s: "
> 
> Basically adding semicolon after the %s.
> How can i do it across all the files? I don't
> want to individually go to each file and do it.

Presumably, this would be done only for files that use
__func__ as the first argument to printk.

Something like this might work moderately well.

$ git ls-files | grep '\.[ch]$' | \
  xargs perl -i -e 'local $/; while (<>) { s/\b(printk|pr_(?:emerg|crit|alert|err|notice|warn|warning|info))\s*\(\s*\"\%s(?:\s*\(\s*\)\s*)?(?:\s*:\s*)?\s*(?:\-\s*)?([^"]+)"\s*,(\s*)__func__\b/$1("%s: $2",$3__func__/g; print; }'


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