From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Frozen callback.
Date: Tue, 02 Oct 2012 10:05:04 +0200 [thread overview]
Message-ID: <506AA030.90705@wxs.nl> (raw)
In-Reply-To: <CADVh14U7ZDLxJUFP2+h4AjxORkHhsJJOV8_Zc6C623XSwcb9eA@mail.gmail.com>
On 2-10-2012 02:30, Andre Caldas wrote:
>>> I am trying to redefine the ’open_read_file’ callback.
>>
>> [...]
>> direct callback access is disabled. There are usually some layers
>> of abstraction on top of them, different ones for different
>> callbacks. Mapping them all is a huge effort, so best refer to
>> the source.
>>
>> In your case the function resolvers.openers.helpers.textopener()
>> takes the place of the open_read_file callback. It can be found
>> in data-tex.lua.
>
> Shall I simply do something like this?
>
> local function textopener(tag, filename, filehandle, coding)
> result = old_textopener(tag, filename, filehandle, coding)
> -- Do lots of things
> return result
> end
>
> resolvers.openers.helpers.textopener = textopener
this is not the recommended way .. better do somethign like this:
\starttext
\startluacode
function document.MyCharacterMess(str,filename)
if file.nameonly(filename) == "ward" then
str = table.concat(string.totable(str,"."), " + ")
end
return str
end
local textfileactions = resolvers.openers.helpers.textfileactions
utilities.sequencers.appendaction(textfileactions,"system","document.MyCharacterMess")
\stopluacode
\input ward
\input knuth
\stoptext
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next prev parent reply other threads:[~2012-10-02 8:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-01 19:11 Andre Caldas
2012-10-01 20:02 ` Philipp Gesang
2012-10-02 0:30 ` Andre Caldas
2012-10-02 8:05 ` Hans Hagen [this message]
2012-10-02 11:31 ` Andre Caldas
2012-10-02 12:02 ` Sietse Brouwer
2012-10-02 12:13 ` Philipp Gesang
2012-10-02 12:37 ` Hans Hagen
2012-10-10 19:40 ` Andre Caldas
2012-10-02 11:41 ` Andre Caldas
2012-10-02 11:54 ` Wolfgang Schuster
2012-10-02 12:27 ` Hans Hagen
2012-10-01 20:49 ` Hans Hagen
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