on imposition and local or external files

on imposition and local or external files

[Pablo Rodríguez]

Hi there,

I would like to use imposition to rearrange an existing PDF as a 
booklet, but I don' have ConTeXt installed on the machine I would like 
to do it.

Using http://live.contextgarden.net/ might do the job, but I have 
problems to load the local file.

Is there any way to load a local file (or even an URL) with ConTeXt? How 
should I rewrite the following command to load a local file or an URL in 
ConteXt live?

\insertpages[original_file.pdf][width=0pt]

Thanks for your help,


Pablo
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___________________________________________________________________________________

Re: on imposition and local or external files

[Taco Hoekwater]

Pablo Rodríguez wrote:
> Hi there,
> 
> I would like to use imposition to rearrange an existing PDF as a 
> booklet, but I don' have ConTeXt installed on the machine I would like 
> to do it.
> 
> Using http://live.contextgarden.net/ might do the job, but I have 
> problems to load the local file.
> 
> Is there any way to load a local file (or even an URL) with ConTeXt? How 
> should I rewrite the following command to load a local file or an URL in 
> ConteXt live?

In mkii, this is simply impossible.

If you have the program "curl" installed, you can use an url as a
file name in context mkiv. You cannot reach a local file from
http://live.contextgarden.net, however (and that is a good thing).

Best wishes,
Taco
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Re: on imposition and local or external files

[luigi scarso]

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On Fri, Nov 7, 2008 at 11:03 AM, Taco Hoekwater <taco@elvenkind.com> wrote:

>
>
> Pablo Rodríguez wrote:
> > Hi there,
> >
> > I would like to use imposition to rearrange an existing PDF as a
> > booklet, but I don' have ConTeXt installed on the machine I would like
> > to do it.
> >
> > Using http://live.contextgarden.net/ might do the job, but I have
> > problems to load the local file.
> >
> > Is there any way to load a local file (or even an URL) with ConTeXt? How
> > should I rewrite the following command to load a local file or an URL in
> > ConteXt live?
>
> In mkii, this is simply impossible.
>
> If you have the program "curl" installed, you can use an url as a
> file name in context mkiv.

curl as os.spawn ?
Why don't use lua-curl
http://luaforge.net/projects/lua-curl/



-- 
luigi

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Re: on imposition and local or external files

[Hans Hagen]

luigi scarso wrote:
> 
> 
> On Fri, Nov 7, 2008 at 11:03 AM, Taco Hoekwater <taco@elvenkind.com 
> <mailto:taco@elvenkind.com>> wrote:
> 
> 
> 
>     Pablo Rodríguez wrote:
>      > Hi there,
>      >
>      > I would like to use imposition to rearrange an existing PDF as a
>      > booklet, but I don' have ConTeXt installed on the machine I would
>     like
>      > to do it.
>      >
>      > Using http://live.contextgarden.net/ might do the job, but I have
>      > problems to load the local file.
>      >
>      > Is there any way to load a local file (or even an URL) with
>     ConTeXt? How
>      > should I rewrite the following command to load a local file or an
>     URL in
>      > ConteXt live?
> 
>     In mkii, this is simply impossible.
> 
>     If you have the program "curl" installed, you can use an url as a
>     file name in context mkiv.
> 
> curl as os.spawn ?
> Why don't use lua-curl
> http://luaforge.net/projects/lua-curl/

we have the socket library and at some point i'll rewrite the code to 
use that

Hans


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               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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Re: on imposition and local or external files

[Taco Hoekwater]

luigi scarso wrote:
> 
> curl as os.spawn ?
> Why don't use lua-curl
> http://luaforge.net/projects/lua-curl/

300kb extra in the binary and an extra portability headache.

Luatex actually includes the luasocket libraries, so that
would be a better option, but it takes time to write the code
for a http/ftp fetcher to replace curl completely.

If you (or someone else) is interested in writing a replacement
for luat-crl.lua, have a look at:

   http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/

The bare bones usage (for http) is as simple as this:

   local http = require("socket.http")
   local content, responsecode, extra = http.request(arg[1])
   io.write (content)

but in real life, you have to deal with partial content,
errors codes, url escaping, etc. etc.

Best wishes,
Taco

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Re: on imposition and local or external files

[luigi scarso]

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On Fri, Nov 7, 2008 at 11:52 AM, Taco Hoekwater <taco@elvenkind.com> wrote:

>
>
> luigi scarso wrote:
> >
> > curl as os.spawn ?
> > Why don't use lua-curl
> > http://luaforge.net/projects/lua-curl/
>
> 300kb extra in the binary

true


> and an extra portability headache.
>
true and strongest than first.



>
> Luatex actually includes the luasocket libraries, so that
> would be a better option, but it takes time to write the code
> for a http/ftp fetcher to replace curl completely.
>
> If you (or someone else) is interested in writing a replacement
> for luat-crl.lua, have a look at:
>

no-no-no, it's difficult to compete with curl (IM(A)O) .


-- 
luigi

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Re: on imposition and local or external files

[Pablo Rodríguez]

Thanks, Taco, Luigi, Hans and Mojca.

Mojca Miklavec wrote:
>> Is there any way to load a local file (or even an URL) with ConTeXt? How
>> should I rewrite the following command to load a local file or an URL in
>> ConteXt live?
> 
> Live doesn't allow you to load local files. People could upload all
> kinds of junk.

Actually I wanted to get proper imposition for “The Future of The 
Internet — And How to Stop It” on a computer that doesn't have ConTeXt 
installed and on which I couldn't install ConTeXt even if I had 
administrator rights.

Sorry, but I don't understand the problem here. If people upload all 
kinds of junk, why is this an issue? Or does ConteXt live show or store 
data for other users than the uploader? I thought that it was not a 
hosting or publishing service.

Thanks for your help,


Pablo
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Re: on imposition and local or external files

[Peter Münster]

On Fri, Nov 07 2008, Taco Hoekwater wrote:
> 
> > curl as os.spawn ?
> > Why don't use lua-curl
> > http://luaforge.net/projects/lua-curl/
> 
> 300kb extra in the binary and an extra portability headache.

I don't understand all the trouble...
This works very well on live.contextgarden.net (luatex):

\starttext
bla
\externalfigure[http://pmrb.free.fr/tmp/hacker.jpg]
bla
\stoptext

Fetching a pdf instead of a jpg should be possible too, I believe...

Cheers, Peter

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Re: on imposition and local or external files

[Peter Münster]

On Fri, Nov 07 2008, Pablo Rodríguez wrote:

> Is there any way to load a local file (or even an URL) with ConTeXt? How 
> should I rewrite the following command to load a local file or an URL in 
> ConteXt live?
> 
> \insertpages[original_file.pdf][width=0pt]

I did not find any documentation about \insertpages[][] but I've just tried
it out:

\starttext
\insertpages[http://meeting.contextgarden.net/2008/talks/%
2008-08-21-taco-luatex/luatex-talk.pdf][width=0pt]
\stoptext

It just works!
Good luck, Peter

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Re: on imposition and local or external files

[Pablo Rodríguez]

Peter Münster wrote:
> On Fri, Nov 07 2008, Pablo Rodríguez wrote:
> 
>> Is there any way to load a local file (or even an URL) with ConTeXt? How 
>> should I rewrite the following command to load a local file or an URL in 
>> ConteXt live?
>>
>> \insertpages[original_file.pdf][width=0pt]
> 
> I did not find any documentation about \insertpages[][] but I've just tried
> it out:
> 
> \starttext
> \insertpages[http://meeting.contextgarden.net/2008/talks/%
> 2008-08-21-taco-luatex/luatex-talk.pdf][width=0pt]
> \stoptext
> 
> It just works!

Many thanks for your help, Peter.


Pablo
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Re: on imposition and local or external files

[Patrick Gundlach]

Hi,

> Sorry, but I don't understand the problem here. If people upload all 
> kinds of junk, why is this an issue? Or does ConteXt live show or store 
> data for other users than the uploader? I thought that it was not a 
> hosting or publishing service.

ConTeXt live does not store anything for more than a few minutes.

Patrick

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