linking to an external PDF file

linking to an external PDF file

[Alan Bowen]

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A how-to question that has come up:

Is there a way to establish to hyperlink to a specific page or footnote in
an external PDF document?

Alan

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Re: linking to an external PDF file

[Hans Hagen]

On 10/7/2018 6:26 PM, Alan Bowen wrote:
> A how-to question that has come up:
> 
> Is there a way to establish to hyperlink to a specific page or footnote 
> in an external PDF document?
-- first.tex --

\setupinteraction[state=start]

\starttext

     whatever \footnote[whatever:1]{whatever 1}

     \goto{note 3}[second::whatever:3]
     \goto{note 4}[second::whatever:4]

     \in{note (1)}[whatever:1]
     \in{note (2)}[whatever:2]
     \in{note (3)}[second::whatever:3]
     \in{note (4)}[second::whatever:4]

     \page

     whatever \footnote[whatever:2]{whatever 2}

     \goto{note 3}[second::whatever:3]
     \goto{note 4}[second::whatever:4]

     \in{note (1)}[whatever:1]
     \in{note (2)}[whatever:2]
     \in{note (3)}[second::whatever:3]
     \in{note (4)}[second::whatever:4]

\stoptext

-- second.tex --


\setupinteraction[state=start]

\starttext

     whatever \footnote[whatever:3]{whatever 3}

     \goto{note 1}[first::whatever:1]
     \goto{note 2}[first::whatever:2]

     \in{note (1)}[first::whatever:1]
     \in{note (2)}[first::whatever:2]
     \in{note (3)}[whatever:3]
     \in{note (4)}[whatever:4]

     \page

     whatever \footnote[whatever:4]{whatever 4}

     \goto{note 1}[first::whatever:1]
     \goto{note 2}[first::whatever:2]

     \in{note (1)}[first::whatever:1]
     \in{note (2)}[first::whatever:2]
     \in{note (3)}[whatever:3]
     \in{note (4)}[whatever:4]

\stoptext

-- 

the \in ref to the other doc will work ok in a next beta (normally one 
will use a proper project / component structure for such cases)

Hans

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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Re: linking to an external PDF file

[Pablo Rodriguez]

On 10/7/18 8:05 PM, Hans Hagen wrote:
> On 10/7/2018 6:26 PM, Alan Bowen wrote:
>> A how-to question that has come up:
>>
>> Is there a way to establish to hyperlink to a specific page or footnote 
>> in an external PDF document?

Many thanks for your reply, Hans.

Is there a way to hyperlink to an attached document? I mean, no matter
whether it has been generated by ConTeXt or not.

Many thanks for your help,

Pablo
-- 
http://www.ousia.tk
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Re: linking to an external PDF file

[Hans Hagen]

On 10/7/2018 8:19 PM, Pablo Rodriguez wrote:
> On 10/7/18 8:05 PM, Hans Hagen wrote:
>> On 10/7/2018 6:26 PM, Alan Bowen wrote:
>>> A how-to question that has come up:
>>>
>>> Is there a way to establish to hyperlink to a specific page or footnote
>>> in an external PDF document?
> 
> Many thanks for your reply, Hans.
> 
> Is there a way to hyperlink to an attached document? I mean, no matter
> whether it has been generated by ConTeXt or not.
i have no clue what you mean

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

Re: linking to an external PDF file

[Pablo Rodriguez]

On 10/7/18 8:33 PM, Hans Hagen wrote:
> On 10/7/2018 8:19 PM, Pablo Rodriguez wrote:
>> [...]
>> Is there a way to hyperlink to an attached document? I mean, no matter
>> whether it has been generated by ConTeXt or not.
> > i have no clue what you mean

Is there a way to link to a page or a destination (such as in
https://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf#page=500
or
https://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf#nameddest=G12.2456615)
to a document that is attached (using \attachment) in ConTeXt?

I hope it is clear now,

Pablo
-- 
http://www.ousia.tk
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Re: linking to an external PDF file

[Hans Hagen]

On 10/7/2018 8:41 PM, Pablo Rodriguez wrote:
> On 10/7/18 8:33 PM, Hans Hagen wrote:
>> On 10/7/2018 8:19 PM, Pablo Rodriguez wrote:
>>> [...]
>>> Is there a way to hyperlink to an attached document? I mean, no matter
>>> whether it has been generated by ConTeXt or not.
>>> i have no clue what you mean
> 
> Is there a way to link to a page or a destination (such as in
> https://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf#page=500
> or
> https://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf#nameddest=G12.2456615)
> to a document that is attached (using \attachment) in ConTeXt?
> 
> I hope it is clear now,
it points to the media mess .. which relates to either or not obsolete 
stuff (flash related)

anyway, i don't know as i never embed pdf docs and if i would i'd have 
no reason to refer to them (it probably depends on a viewer extracting 
the attachment, caching it and then providing access: it makes no sense 
to waste time on features that are not supported or maybe only by 
acrobat unless it's a well paid projects in which case throw away code 
is a bit less waste of time because it brings foon on the table)

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: linking to an external PDF file

[Henning Hraban Ramm]

Am 2018-10-07 um 20:05 schrieb Hans Hagen <j.hagen@xs4all.nl>:

> On 10/7/2018 6:26 PM, Alan Bowen wrote:
>> A how-to question that has come up:
>> Is there a way to establish to hyperlink to a specific page or footnote in an external PDF document?
> -- first.tex --
> 
> \setupinteraction[state=start]
> 
> \starttext
> 
>    whatever \footnote[whatever:1]{whatever 1}
> 
>    \goto{note 3}[second::whatever:3]
>    \goto{note 4}[second::whatever:4]


BTW if you don’t know a reference name (from a foreign PDF), you can link to the page like this:

\goto{TEST}[../../somepdffile::page(23)]

i.e. it works even with paths.

Greetlings, Hraban
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Re: linking to an external PDF file

[Hans van der Meer]

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I am embedding links to an UR in my documents. Although it is used in XML-documents, you might be able to use the gist of this code that generates a clickable link. Perhaps you find it useful. 

dr. Hans van der Meer

% Return the code when clicking the link.
\def\URIReturnCode#1{\ctxlua{tex.print(hvdm.urireturncode("#1"))}}

— Some Lua code needed:
-- Check URI

	socket.http.TIMEOUT = 5					-- set URI timeout in seconds
	hvdm.urireturncode = function (theuri)
		-- Differentiate between file and http protocols.
		local first,last = string.find(theuri, "file://")
		if first == nil then
			-- We have http to search for.
			local content, status, authinfo = socket.http.request{
				method = "HEAD",
				url = theuri,
				}
			return type(status) == "number" and status or "failure"
		else
			-- We must ascertain the existence of the file.
			local thefile = io.open(string.sub(theuri, last+1, -1), "r")
			if thefile then
				io.close(thefile)
				return "200"
			else
				return "404"
			end
		end
	end

% ..... Place an url link .....................................................

% BEWARE: spaces in file names must be %20 in the link !!!

% This global definition of the URLbase cannot be missed.
\def\THEURLBASE{http://}

% Signal the occurence of timeout on URI search.
\newif\ifURItimeout

\startxmlsetups xmlcommon:urlbase
	\edef\THEURLBASE{\xmlstrippednolines{#1}{.}}

	% Reset the URI timeout for new URLbase.
	\global\URItimeoutfalse
\stopxmlsetups

\startxmlsetups xmlcommon:url

	% Define the full uri.
	\edef\theurl{\THEURLBASE\xmlatt{#1}{link}}

	 % File suffix should be one of the list.
	\doifelse{\FileSuffixList{\xmlatt{#1}{link}}
			{pdf,jpg,jpeg,html,png,tif,tiff}}{\empty}
		{\def\suffix{.impossible}}% no suffix from the list here
		{\def\suffix{\empty}}% one of the list is present

	% First try link as given, beware of unreachable site.
	\ifURItimeout
		% For previously timeout on this site.
	\else
		\edef\returncode{\URIReturnCode{\theurl}}
		\doif{\returncode}{failure}
		{
			\global\URItimeouttrue
			\errorcall{#1}{url access fails for \THEURLBASE\xmlatt{#1}{link}}
		}
	\fi

	% On URI timeout there is no hope to find the file.
	\ifURItimeout
	\else
		% When there is no suffix from the list, try several.
		\doifnot{\suffix}{\empty}
		{
			\scratchcounter=200\relax
			\ifnum\returncode=\scratchcounter\else
				\def\suffix{.pdf}
				\edef\returncode{\URIReturnCode{\theurl\suffix}}
			\fi
			\ifnum\returncode=\scratchcounter\else
				\def\suffix{.jpg}
				\edef\returncode{\URIReturnCode{\theurl\suffix}}
			\fi
			\ifnum\returncode=\scratchcounter\else
				\def\suffix{.jpeg}
				\edef\returncode{\URIReturnCode{\theurl\suffix}}
			\fi
			\ifnum\returncode=\scratchcounter\else
				\def\suffix{.html}
				\edef\returncode{\URIReturnCode{\theurl\suffix}}
			\fi
			\ifnum\returncode=\scratchcounter\else
				\def\suffix{.png}
				\edef\returncode{\URIReturnCode{\theurl\suffix}}
			\fi
			\ifnum\returncode=\scratchcounter\else
				\def\suffix{.tiff}
				\edef\returncode{\URIReturnCode{\theurl\suffix}}
			\fi
			\ifnum\returncode=\scratchcounter\else
				\def\suffix{.tif}
				\edef\returncode{\URIReturnCode{\theurl\suffix}}
			\fi
		}

		% Give up if returncode other then 200.
		\ifnum\returncode=200\relax
			% Page number might be added.
			\doifelse{\xmlatt{#1}{page}}{\empty}
				{\let\thep\empty}
				{\edef\thep{\letterhash page=\xmlatt{#1}{page}}}

			% Place the link, ref-attribute prevales in the presentation.
			\doifelse{\xmlatt{#1}{ref}}{\empty}
				{\edef\temp{\xmlatt{#1}{link}}}
				{\edef\temp{\xmlatt{#1}{ref}}}
			\goto
				{\FirstLastCharacters{\temp}{\xmlatt{#1}{maxsize}}}
				[url(\theurl\suffix\thep)]
		\else
			\errorcall{#1}
				{\THEURLBASE\xmlatt{#1}{link} not found (\returncode)}
		\fi

	\fi	% end of URItimeout
\stopxmlsetups


> On 8 Oct 2018, at 00:39, Hans Hagen <j.hagen@xs4all.nl> wrote:
> 
> On 10/7/2018 8:41 PM, Pablo Rodriguez wrote:
>> On 10/7/18 8:33 PM, Hans Hagen wrote:
>>> On 10/7/2018 8:19 PM, Pablo Rodriguez wrote:
>>>> [...]
>>>> Is there a way to hyperlink to an attached document? I mean, no matter
>>>> whether it has been generated by ConTeXt or not.
>>>> i have no clue what you mean
>> Is there a way to link to a page or a destination (such as in
>> https://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf#page=500
>> or
>> https://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf#nameddest=G12.2456615)
>> to a document that is attached (using \attachment) in ConTeXt?
>> I hope it is clear now,
> it points to the media mess .. which relates to either or not obsolete stuff (flash related)
> 
> anyway, i don't know as i never embed pdf docs and if i would i'd have no reason to refer to them (it probably depends on a viewer extracting the attachment, caching it and then providing access: it makes no sense to waste time on features that are not supported or maybe only by acrobat unless it's a well paid projects in which case throw away code is a bit less waste of time because it brings foon on the table)
> 
> Hans
> 
> -----------------------------------------------------------------
>                                          Hans Hagen | PRAGMA ADE
>              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>       tel: 038 477 53 69 | www.pragma-ade.nl | 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://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________


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Re: linking to an external PDF file

[Pablo Rodriguez]

On 10/8/18 10:09 AM, Hans van der Meer wrote:
> I am embedding links to an URL in my documents. Although it is used in
> XML-documents, you might be able to use the gist of this code that
> generates a clickable link. Perhaps you find it useful. 

Many thanks for your reply, dr. Hans van der Meer.

Sorry, but I’m afraid I don’t see the way of generating an URL to a
non-external document in your code.

After all, the document is embedded in the PDF document itself.

Pablo

> % Return the code when clicking the link.
> \def\URIReturnCode#1{\ctxlua{tex.print(hvdm.urireturncode("#1"))}}
> 
> — Some Lua code needed:
> -- Check URI
> 
> socket.http.TIMEOUT = 5-- set URI timeout in seconds
> hvdm.urireturncode = function (theuri)
> -- Differentiate between file and http protocols.
> local first,last = string.find(theuri, "file://")
> if first == nil then
> -- We have http to search for.
> local content, status, authinfo = socket.http.request{
> method = "HEAD",
> url = theuri,
> }
> return type(status) == "number" and status or "failure"
> else
> -- We must ascertain the existence of the file.
> local thefile = io.open(string.sub(theuri, last+1, -1), "r")
> if thefile then
> io.close(thefile)
> return "200"
> else
> return "404"
> end
> end
> end
> 
> % ..... Place an url link
> .....................................................
> 
> % BEWARE: spaces in file names must be %20 in the link !!!
> 
> % This global definition of the URLbase cannot be missed.
> \def\THEURLBASE{http://}
> 
> % Signal the occurence of timeout on URI search.
> \newif\ifURItimeout
> 
> \startxmlsetups xmlcommon:urlbase
> \edef\THEURLBASE{\xmlstrippednolines{#1}{.}}
> 
> % Reset the URI timeout for new URLbase.
> \global\URItimeoutfalse
> \stopxmlsetups
> 
> \startxmlsetups xmlcommon:url
> 
> % Define the full uri.
> \edef\theurl{\THEURLBASE\xmlatt{#1}{link}}
> 
> % File suffix should be one of the list.
> \doifelse{\FileSuffixList{\xmlatt{#1}{link}}
> {pdf,jpg,jpeg,html,png,tif,tiff}}{\empty}
> {\def\suffix{.impossible}}% no suffix from the list here
> {\def\suffix{\empty}}% one of the list is present
> 
> % First try link as given, beware of unreachable site.
> \ifURItimeout
> % For previously timeout on this site.
> \else
> \edef\returncode{\URIReturnCode{\theurl}}
> \doif{\returncode}{failure}
> {
> \global\URItimeouttrue
> \errorcall{#1}{url access fails for \THEURLBASE\xmlatt{#1}{link}}
> }
> \fi
> 
> % On URI timeout there is no hope to find the file.
> \ifURItimeout
> \else
> % When there is no suffix from the list, try several.
> \doifnot{\suffix}{\empty}
> {
> \scratchcounter=200\relax
> \ifnum\returncode=\scratchcounter\else
> \def\suffix{.pdf}
> \edef\returncode{\URIReturnCode{\theurl\suffix}}
> \fi
> \ifnum\returncode=\scratchcounter\else
> \def\suffix{.jpg}
> \edef\returncode{\URIReturnCode{\theurl\suffix}}
> \fi
> \ifnum\returncode=\scratchcounter\else
> \def\suffix{.jpeg}
> \edef\returncode{\URIReturnCode{\theurl\suffix}}
> \fi
> \ifnum\returncode=\scratchcounter\else
> \def\suffix{.html}
> \edef\returncode{\URIReturnCode{\theurl\suffix}}
> \fi
> \ifnum\returncode=\scratchcounter\else
> \def\suffix{.png}
> \edef\returncode{\URIReturnCode{\theurl\suffix}}
> \fi
> \ifnum\returncode=\scratchcounter\else
> \def\suffix{.tiff}
> \edef\returncode{\URIReturnCode{\theurl\suffix}}
> \fi
> \ifnum\returncode=\scratchcounter\else
> \def\suffix{.tif}
> \edef\returncode{\URIReturnCode{\theurl\suffix}}
> \fi
> }
> 
> % Give up if returncode other then 200.
> \ifnum\returncode=200\relax
> % Page number might be added.
> \doifelse{\xmlatt{#1}{page}}{\empty}
> {\let\thep\empty}
> {\edef\thep{\letterhash page=\xmlatt{#1}{page}}}
> 
> % Place the link, ref-attribute prevales in the presentation.
> \doifelse{\xmlatt{#1}{ref}}{\empty}
> {\edef\temp{\xmlatt{#1}{link}}}
> {\edef\temp{\xmlatt{#1}{ref}}}
> \goto
> {\FirstLastCharacters{\temp}{\xmlatt{#1}{maxsize}}}
> [url(\theurl\suffix\thep)]
> \else
> \errorcall{#1}
> {\THEURLBASE\xmlatt{#1}{link} not found (\returncode)}
> \fi
> 
> \fi% end of URItimeout
> \stopxmlsetups
> 
> 
>> On 8 Oct 2018, at 00:39, Hans Hagen <j.hagen@xs4all.nl
>> <mailto:j.hagen@xs4all.nl>> wrote:
>>
>> On 10/7/2018 8:41 PM, Pablo Rodriguez wrote:
>>> On 10/7/18 8:33 PM, Hans Hagen wrote:
>>>> On 10/7/2018 8:19 PM, Pablo Rodriguez wrote:
>>>>> [...]
>>>>> Is there a way to hyperlink to an attached document? I mean, no matter
>>>>> whether it has been generated by ConTeXt or not.
>>>>> i have no clue what you mean
>>> Is there a way to link to a page or a destination (such as in
>>> https://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf#page=500
>>> or
>>> https://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf#nameddest=G12.2456615)
>>> to a document that is attached (using \attachment) in ConTeXt?
>>> I hope it is clear now,
>> it points to the media mess .. which relates to either or not obsolete
>> stuff (flash related)
>>
>> anyway, i don't know as i never embed pdf docs and if i would i'd have
>> no reason to refer to them (it probably depends on a viewer extracting
>> the attachment, caching it and then providing access: it makes no
>> sense to waste time on features that are not supported or maybe only
>> by acrobat unless it's a well paid projects in which case throw away
>> code is a bit less waste of time because it brings foon on the table)
>>
>> Hans


-- 
http://www.ousia.tk
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