From: luigi scarso <luigi.scarso@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Use figures without file extension
Date: Sat, 26 May 2012 16:26:31 +0200 [thread overview]
Message-ID: <CAG5iGsDcSCfLaOsJpQRLyyo1TSXzC529UX5Nfm5p4pZ4g+_ucQ@mail.gmail.com> (raw)
In-Reply-To: <4FC0E752.9080002@wxs.nl>
On Sat, May 26, 2012 at 4:23 PM, Hans Hagen <pragma@wxs.nl> wrote:
> On 26-5-2012 16:04, Aditya Mahajan wrote:
>>
>> On Sat, 26 May 2012, Hans Hagen wrote:
>>
>>> On 26-5-2012 04:08, Aditya Mahajan wrote:
>>>>
>>>> Currently, ConTeXt only recognizes the type of figure from the file
>>>> extension. If a filename does not have an extension, \externalfigure
>>>> fails.
>>>>
>>>> For example:
>>>>
>>>> $ cp `luatools hacker.jpg` something
>>>
>>>
>>> ah .. i see, no extension .. too tricky to support that as they we'd
>>> need to run an identify on the image which is probably not what we want
>>
>>
>> However adding `method=jpeg` works, even if the image is not a jpeg!
>>
>>> i've made a simple 'identify' but am yet unsure how to use that in the
>>> current lookup strategy (as i want to avoid too much overhead ...
>>> using images without suffix is bad anyway)
>>
>>
>> I am using a script to typeset rss feed to a pdf for reading on kindle.
>> Some blog engines (e.g. typepad) do not set an extension for the image.
>> As such, I cannot control the input. For the moment, I am using a
>> workaround:
>>
>> \let\normalexternalfigure\externalfigure
>> \unexpanded\def\externalfigure
>> {\dodoubleargument\rssfeed_externalfigure}
>>
>> \def\rssfeed_externalfigure[#1][#2]%
>> {\normalexternalfigure[#1][\c!scale=2000, \c!method=JPEG, #2]}}
>>
>> Notice the method=JPEG.
>>
>> But, I think that I'll need to wrap a custom wrapper anyways, and some
>> pages contain gif images which cause luatex to crash.
>
>
> I'll add a virtual type 'auto':
>
> \externalfigure[yourname.auto]
This can be interesting
http://www.garykessler.net/library/file_sigs.html
--
luigi
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next prev parent reply other threads:[~2012-05-26 14:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-26 2:08 Aditya Mahajan
2012-05-26 9:28 ` Hans Hagen
2012-05-26 13:39 ` Hans Hagen
2012-05-26 14:04 ` Aditya Mahajan
2012-05-26 14:23 ` Hans Hagen
2012-05-26 14:26 ` luigi scarso [this message]
2012-05-27 1:43 ` Rogers, Michael K
2012-05-27 2:49 ` Aditya Mahajan
2012-05-27 13:09 ` Rogers, Michael K
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