escaping filenames with externalfigure

escaping filenames with externalfigure

[Santy, Michael]

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Is there a way to escape special characters in filenames passed to externalfigure.  I'm encountering the situation where users are choosing images that may contain brackets or curly braces (e.g., flower[1].jpg or flower{1}.jpg).  If I pass filename containing these characters directly to externalfigure, the closing bracket is mistaken for the end of the filename.
\externalfigure[flower{1}.jpg] % works
\externalfigure[flower[1].jpg] % doesn't work

I then tried to define a variable that holds the filename and pass that variable to externalfigure, but it ran into problems with curly braces.

\def\myimagefilename{flower[1].jpg} 
\externalfigure[\myimagefilename] % works

\def\myimagefilename{flower{1}.jpg}
\externalfigure[\myimagefilename] % doesn't work

Does anyone have any idea how I could handle arbitrary filename inputs that contain brackets and curly braces?

Cheers,
Mike

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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Hans Hagen]

Santy, Michael wrote:
> Is there a way to escape special characters in filenames passed to externalfigure.  I'm encountering the situation where users are choosing images that may contain brackets or curly braces (e.g., flower[1].jpg or flower{1}.jpg).  If I pass filename containing these characters directly to externalfigure, the closing bracket is mistaken for the end of the filename.
> \externalfigure[flower{1}.jpg] % works
> \externalfigure[flower[1].jpg] % doesn't work
> 
> I then tried to define a variable that holds the filename and pass that variable to externalfigure, but it ran into problems with curly braces.
> 
> \def\myimagefilename{flower[1].jpg} 
> \externalfigure[\myimagefilename] % works
> 
> \def\myimagefilename{flower{1}.jpg}
> \externalfigure[\myimagefilename] % doesn't work
> 
> Does anyone have any idea how I could handle arbitrary filename inputs that contain brackets and curly braces?

maybe "name" works

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Santy, Michael]

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If I understand your suggestion correctly, specifying name doesn't work.

\externalfigure[][name=flower[1].jpg]
\externalfigure[name=flower[1].jpg]

Cheers,
Mike

-----Original Message-----
From: ntg-context-bounces@ntg.nl on behalf of Hans Hagen
Sent: Thu 12/27/2007 8:55 AM
To: mailing list for ConTeXt users
Subject: Re: [NTG-context] escaping filenames with externalfigure
 
Santy, Michael wrote:
> Is there a way to escape special characters in filenames passed to externalfigure.  I'm encountering the situation where users are choosing images that may contain brackets or curly braces (e.g., flower[1].jpg or flower{1}.jpg).  If I pass filename containing these characters directly to externalfigure, the closing bracket is mistaken for the end of the filename.
> \externalfigure[flower{1}.jpg] % works
> \externalfigure[flower[1].jpg] % doesn't work
> 
> I then tried to define a variable that holds the filename and pass that variable to externalfigure, but it ran into problems with curly braces.
> 
> \def\myimagefilename{flower[1].jpg} 
> \externalfigure[\myimagefilename] % works
> 
> \def\myimagefilename{flower{1}.jpg}
> \externalfigure[\myimagefilename] % doesn't work
> 
> Does anyone have any idea how I could handle arbitrary filename inputs that contain brackets and curly braces?

maybe "name" works

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________


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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Hans Hagen]

Santy, Michael wrote:
> Is there a way to escape special characters in filenames passed to externalfigure.  I'm encountering the situation where users are choosing images that may contain brackets or curly braces (e.g., flower[1].jpg or flower{1}.jpg).  If I pass filename containing these characters directly to externalfigure, the closing bracket is mistaken for the end of the filename.
> \externalfigure[flower{1}.jpg] % works
> \externalfigure[flower[1].jpg] % doesn't work

\externalfigure[{flower[1].jpg}] may also work

> I then tried to define a variable that holds the filename and pass that variable to externalfigure, but it ran into problems with curly braces.
> 
> \def\myimagefilename{flower[1].jpg} 
> \externalfigure[\myimagefilename] % works
> 
> \def\myimagefilename{flower{1}.jpg}
> \externalfigure[\myimagefilename] % doesn't work
> 
> Does anyone have any idea how I could handle arbitrary filename inputs that contain brackets and curly braces?
> 
> Cheers,
> Mike
> 
> 
> 
> ------------------------------------------------------------------------
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Santy, Michael]

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\externalfigure[{flower[1].jpg}] demonstrates the same behavior as \externalfigure[flower[1].jpg]

Cheers,
Mike


-----Original Message-----
From: ntg-context-bounces@ntg.nl on behalf of Hans Hagen
Sent: Thu 12/27/2007 8:56 AM
To: mailing list for ConTeXt users
Subject: Re: [NTG-context] escaping filenames with externalfigure
 
Santy, Michael wrote:
> Is there a way to escape special characters in filenames passed to externalfigure.  I'm encountering the situation where users are choosing images that may contain brackets or curly braces (e.g., flower[1].jpg or flower{1}.jpg).  If I pass filename containing these characters directly to externalfigure, the closing bracket is mistaken for the end of the filename.
> \externalfigure[flower{1}.jpg] % works
> \externalfigure[flower[1].jpg] % doesn't work

\externalfigure[{flower[1].jpg}] may also work

> I then tried to define a variable that holds the filename and pass that variable to externalfigure, but it ran into problems with curly braces.
> 
> \def\myimagefilename{flower[1].jpg} 
> \externalfigure[\myimagefilename] % works
> 
> \def\myimagefilename{flower{1}.jpg}
> \externalfigure[\myimagefilename] % doesn't work
> 
> Does anyone have any idea how I could handle arbitrary filename inputs that contain brackets and curly braces?
> 
> Cheers,
> Mike
> 
> 
> 
> ------------------------------------------------------------------------
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________


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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Wolfgang Schuster]

On Thu, 27 Dec 2007 15:56:14 +0100
Hans Hagen <pragma@wxs.nl> wrote:

> Santy, Michael wrote:
> > Is there a way to escape special characters in filenames passed to externalfigure.  I'm encountering the situation where users are choosing images that may contain brackets or curly braces (e.g., flower[1].jpg or flower{1}.jpg).  If I pass filename containing these characters directly to externalfigure, the closing bracket is mistaken for the end of the filename.
> > \externalfigure[flower{1}.jpg] % works
> > \externalfigure[flower[1].jpg] % doesn't work
> 
> \externalfigure[{flower[1].jpg}] may also work

This did not work, the bracket after 1 is interpreted as the end for
externalfigure and ConTeXt looks for a figure with the name "flower[1"
but brackets in figure names could be used with \useexternalfigure.

> > I then tried to define a variable that holds the filename and pass that variable to externalfigure, but it ran into problems with curly braces.
> > 
> > \def\myimagefilename{flower[1].jpg} 
> > \externalfigure[\myimagefilename] % works
> > 
> > \def\myimagefilename{flower{1}.jpg}
> > \externalfigure[\myimagefilename] % doesn't work
> > 
> > Does anyone have any idea how I could handle arbitrary filename inputs that contain brackets and curly braces?
> > 
> > Cheers,
> > Mike

Wolfgang
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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Wolfgang Schuster]

On Thu, 27 Dec 2007 08:09:55 -0600
"Santy, Michael" <Michael.Santy@dynetics.com> wrote:

> Is there a way to escape special characters in filenames passed to externalfigure.  I'm encountering the situation where users are choosing images that may contain brackets or curly braces (e.g., flower[1].jpg or flower{1}.jpg).  If I pass filename containing these characters directly to externalfigure, the closing bracket is mistaken for the end of the filename.
> \externalfigure[flower{1}.jpg] % works
> \externalfigure[flower[1].jpg] % doesn't work
> 
> I then tried to define a variable that holds the filename and pass that variable to externalfigure, but it ran into problems with curly braces.
> 
> \def\myimagefilename{flower[1].jpg} 
> \externalfigure[\myimagefilename] % works
> 
> \def\myimagefilename{flower{1}.jpg}
> \externalfigure[\myimagefilename] % doesn't work
> 
> Does anyone have any idea how I could handle arbitrary filename inputs that contain brackets and curly braces?

Yould could define symbolic names for the figures and access the
figures with this name, this allows you also to use bracketrs in the
file names.

\useexternalfigure[brace flower][flower{1}]
\useexternalfigure[bracket flower][{flower[1]}]

\starttext
\externalfigure[brace flower]
\externalfigure[bracket flower]
\stoptext

Wolfgang
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Santy, Michael]

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Wolfgang,

Thanks for the suggestion.  However, I'm using ConTeXt to typeset arbitrary XML input from users (and therefore arbitrary image filenames).  While your idea works for the two examples that I gave, it doesn't work if the curly braces aren't balanced in the filename (e.g., "flower{1.jpg").  Is there any general character escaping mechanism for macro arguments?

Cheers,
Mike

-----Original Message-----
From: ntg-context-bounces@ntg.nl on behalf of Wolfgang Schuster
Sent: Thu 12/27/2007 9:00 AM
To: ntg-context@ntg.nl
Subject: Re: [NTG-context] escaping filenames with externalfigure
 
On Thu, 27 Dec 2007 08:09:55 -0600
"Santy, Michael" <Michael.Santy@dynetics.com> wrote:

> Is there a way to escape special characters in filenames passed to externalfigure.  I'm encountering the situation where users are choosing images that may contain brackets or curly braces (e.g., flower[1].jpg or flower{1}.jpg).  If I pass filename containing these characters directly to externalfigure, the closing bracket is mistaken for the end of the filename.
> \externalfigure[flower{1}.jpg] % works
> \externalfigure[flower[1].jpg] % doesn't work
> 
> I then tried to define a variable that holds the filename and pass that variable to externalfigure, but it ran into problems with curly braces.
> 
> \def\myimagefilename{flower[1].jpg} 
> \externalfigure[\myimagefilename] % works
> 
> \def\myimagefilename{flower{1}.jpg}
> \externalfigure[\myimagefilename] % doesn't work
> 
> Does anyone have any idea how I could handle arbitrary filename inputs that contain brackets and curly braces?

Yould could define symbolic names for the figures and access the
figures with this name, this allows you also to use bracketrs in the
file names.

\useexternalfigure[brace flower][flower{1}]
\useexternalfigure[bracket flower][{flower[1]}]

\starttext
\externalfigure[brace flower]
\externalfigure[bracket flower]
\stoptext

Wolfgang
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________


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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Wolfgang Schuster]

> Wolfgang,
>
>  Thanks for the suggestion.  However, I'm using ConTeXt to typeset arbitrary
> XML input from users (and therefore arbitrary image filenames).  While your
> idea works for the two examples that I gave, it doesn't work if the curly
> braces aren't balanced in the filename (e.g., "flower{1.jpg").  Is there any
> general character escaping mechanism for macro arguments?
>
>  Cheers,
>  Mike

If you use xml as input format you could save the file name in a temporary
macro and use this macro now in the \externalfigure command. You already
gave a example for this.

Wolfgang
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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Santy, Michael]

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The problem that I've found with that approach is that the braces have to be balanced.

\def\myimagefilename{flower{1.jpg} % doesn't work
\def\myimagefilename{flower{1}.jpg} % works


-----Original Message-----
From: ntg-context-bounces@ntg.nl on behalf of Wolfgang Schuster
Sent: Thu 12/27/2007 9:27 AM
To: mailing list for ConTeXt users
Subject: Re: [NTG-context] escaping filenames with externalfigure
 
> Wolfgang,
>
>  Thanks for the suggestion.  However, I'm using ConTeXt to typeset arbitrary
> XML input from users (and therefore arbitrary image filenames).  While your
> idea works for the two examples that I gave, it doesn't work if the curly
> braces aren't balanced in the filename (e.g., "flower{1.jpg").  Is there any
> general character escaping mechanism for macro arguments?
>
>  Cheers,
>  Mike

If you use xml as input format you could save the file name in a temporary
macro and use this macro now in the \externalfigure command. You already
gave a example for this.

Wolfgang
___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________


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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Hans Hagen]

Santy, Michael wrote:
> The problem that I've found with that approach is that the braces have to be balanced.
> 
> \def\myimagefilename{flower{1.jpg} % doesn't work
> \def\myimagefilename{flower{1}.jpg} % works

no time for a detailed answer now, but in xml mode you can make { } 
letters which solves the problem

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: escaping filenames with externalfigure

[Santy, Michael]

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Hans,

> no time for a detailed answer now, but in xml mode you can make { } 
> letters which solves the problem

Could you please elaborate a bit?  I'm not familiar with ConTeXt's XML mode (other than for processing MathML).  One thing that I suspect is that XML mode would have an issue with '<' and '>' in the filenames.

Another thought: The image filenames are encoded in my original xml documents according to RFC 1738 (http://www.blooberry.com/indexdot/html/topics/urlencoding.htm).  In my XML -> ConTeXt XSL stylesheets I'm decoding those filenames.  Would it be useful for others if the externalfigure could understand url encoded filenames similar to something like this:

%
% includes the file "flower{1.jpg"
%
\externalfigure[flower%7B1.jpg][encoding=rfc1738]

This would give ConTeXt a general-purpose filename escaping mechanism.

Cheers,
Mike

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___________________________________________________________________________________