Org Publish HTML and PDF With GPG Files

Org Publish HTML and PDF With GPG Files

[lehi]

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Good Afternoon,

I have my org directory filled with encrypted files ending in ".org.gpg". The publish documentation says that org-mode will automatically replace references to ".org" files with ".html", but this is not an automatic action if the files are ".org.gpg". The resulting HTML files must then be edited (in batch with a call to sed) for the page links to work like expected. This happens when exporting to PDF as well. I have been looking over the org-mode documentation and I have found no real answer to this problem other than looking at the publishing source code and modifying it to additionally catch ".org.gpg" files.

Is there some customization setting within Emacs that I could edit that would allow for this to work the way I expect? Or would this require changing the way the publishing works?

v/r,

MR. Lehi Toskin

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Re: Org Publish HTML and PDF With GPG Files

[Tim Cross]

lehi@tosk.in writes:

> Good Afternoon,
>
> I have my org directory filled with encrypted files ending in ".org.gpg". The publish documentation says that org-mode will
> automatically replace references to ".org" files with ".html", but this is not an automatic action if the files are ".org.gpg". The
> resulting HTML files must then be edited (in batch with a call to sed) for the page links to work like expected. This happens
> when exporting to PDF as well. I have been looking over the org-mode documentation and I have found no real answer to
> this problem other than looking at the publishing source code and modifying it to additionally catch ".org.gpg" files.
>
> Is there some customization setting within Emacs that I could edit that would allow for this to work the way I expect? Or
> would this require changing the way the publishing works?
>

I was hoping someone who was more informed than me would respond here.

I don't think there is an 'out of the box' solution for this issue. Part
of the problem is likely because the handling of the gpg decryption is
an Emacs function done outside of org mode i.e. org-mode is not really
aware the original file was an encrypted gpg file, it only see the
decrypted version. This makes it hard for org to know which links ending
in .gpg should be translated and which ones should not (for example, a
link to an encrypted gpg file to be served by the web server rather than
a link to another org file). This makes it a little challenging to come
up with a solution which will work for all use cases.

The good news is that org-mode does support the ability to modify what
happens during an export (publishing is really exporting as html). Have
a look in the org manual at the "Advanced Export Configuration" section
of the manual (under the Exporting section). In particular, you might be
able to achieve the translation of links such that the .gpg are stripped
using export filters.

Re: Org Publish HTML and PDF With GPG Files

[Ihor Radchenko]

Tim Cross <theophilusx@gmail.com> writes:

> I don't think there is an 'out of the box' solution for this issue. Part
> of the problem is likely because the handling of the gpg decryption is
> an Emacs function done outside of org mode i.e. org-mode is not really
> aware the original file was an encrypted gpg file, it only see the
> decrypted version. This makes it hard for org to know which links ending
> in .gpg should be translated and which ones should not (for example, a
> link to an encrypted gpg file to be served by the web server rather than
> a link to another org file). This makes it a little challenging to come
> up with a solution which will work for all use cases.

I do not think that things are that difficult. org->html link conversion
assumes that the linked .org file is also exported generating the
.html file. If I understand correctly, .org.gpg files are also exported
during publishing process. (Lehi Toskin, could you kindly confirm this?)

Thus, we may simply extend `org-html-link' to work on .org.gpg files in
addition to .org files.

-- 
Ihor Radchenko,
Org mode contributor,
Learn more about Org mode at https://orgmode.org/.
Support Org development at https://liberapay.com/org-mode,
or support my work at https://liberapay.com/yantar92

Re: Org Publish HTML and PDF With GPG Files

[lehi]

> Tim Cross theophilusx@gmail.com writes:
> I do not think that things are that difficult. org->html link conversion
> 
> assumes that the linked .org file is also exported generating the
> .html file. If I understand correctly, .org.gpg files are also exported
> during publishing process. (Lehi Toskin, could you kindly confirm this?)
> 
> Thus, we may simply extend `org-html-link' to work on .org.gpg files in
> addition to .org files.

Yes, this is it exactly.

Re: Org Publish HTML and PDF With GPG Files

[David Masterson]

lehi@tosk.in writes:

>> Tim Cross theophilusx@gmail.com writes:
>> I do not think that things are that difficult. org->html link conversion
>> 
>> assumes that the linked .org file is also exported generating the
>> .html file. If I understand correctly, .org.gpg files are also exported
>> during publishing process. (Lehi Toskin, could you kindly confirm this?)
>> 
>> Thus, we may simply extend `org-html-link' to work on .org.gpg files in
>> addition to .org files.
>
> Yes, this is it exactly.
>

Does org-publish have options for files with org-crypt entries?

-- 
David Masterson

[PATCH] Re: Org Publish HTML and PDF With GPG Files

[Ihor Radchenko]

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lehi@tosk.in writes:

>> Thus, we may simply extend `org-html-link' to work on .org.gpg files in
>> addition to .org files.
>
> Yes, this is it exactly.

Can you try the attached patch?

-- 
Ihor Radchenko,
Org mode contributor,
Learn more about Org mode at https://orgmode.org/.
Support Org development at https://liberapay.com/org-mode,
or support my work at https://liberapay.com/yantar92


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From dcbda721705ed54c378bcefa0ec9116b8203ecc8 Mon Sep 17 00:00:00 2001
Message-Id: <dcbda721705ed54c378bcefa0ec9116b8203ecc8.1662378219.git.yantar92@gmail.com>
From: Ihor Radchenko <yantar92@gmail.com>
Date: Mon, 5 Sep 2022 19:40:13 +0800
Subject: [PATCH] ox-publish: Allow linking to encrypted Org files

* lisp/ox-html.el (org-html-link): Convert .org.gpg file links to
.html, in addition to previously performed .org -> .html convertion.
(org-html-link-org-files-as-html): Update the docstring.
* doc/org-manual.org (Publishing links):
* etc/ORG-NEWS (Publishing now supports links to encrypted Org files):
Document the new feature.
---
 doc/org-manual.org | 17 ++++++++++-------
 etc/ORG-NEWS       |  6 ++++++
 lisp/ox-html.el    | 15 +++++++++------
 3 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/doc/org-manual.org b/doc/org-manual.org
index 794682b49..fbd88aa68 100644
--- a/doc/org-manual.org
+++ b/doc/org-manual.org
@@ -16454,13 +16454,16 @@ *** Publishing links
 #+cindex: links, publishing
 
 To create a link from one Org file to another, you would use something
-like =[[file:foo.org][The foo]]= or simply =[[file:foo.org]]= (see [[*External Links]]).  When
-published, this link becomes a link to =foo.html=.  You can thus
-interlink the pages of your "Org web" project and the links will work
-as expected when you publish them to HTML.  If you also publish the
-Org source file and want to link to it, use an =http= link instead of
-a =file:= link, because =file= links are converted to link to the
-corresponding =.html= file.
+like =[[file:foo.org][The foo]]= or simply =[[file:foo.org]]= (see
+[[*External Links]]).  When published, this link becomes a link to
+=foo.html=.  You can thus interlink the pages of your "Org web"
+project and the links will work as expected when you publish them to
+HTML.  If you also publish the Org source file and want to link to it,
+use an =http= link instead of a =file:= link, because =file= links are
+converted to link to the corresponding =.html= file.
+
+Links to encrypted Org files, like =[[file:foo.org.gpg]]= are also
+supported.
 
 You may also link to related files, such as images.  Provided you are
 careful with relative file names, and provided you have also
diff --git a/etc/ORG-NEWS b/etc/ORG-NEWS
index 713a850f6..3f1c8f4c7 100644
--- a/etc/ORG-NEWS
+++ b/etc/ORG-NEWS
@@ -140,6 +140,12 @@ backend.  From now on, using =outline-*= functions is strongly
 discouraged when working with Org files.
 
 ** New features
+*** Publishing now supports links to encrypted Org files
+
+Links to other published Org files are automatically converted to the
+corresponding html links.  Now, this feature is also available when
+links point to encrypted Org files, like
+=[[file:foo.org.gpg::Heading]]=.
 
 *** Interactive commands now support escaping text inside comment blocks
 
diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index b5aa868fe..8da180034 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -839,6 +839,8 @@ (defcustom org-html-link-org-files-as-html t
 (recognized by the extension \".org\") should become links to the corresponding
 HTML file, assuming that the linked Org file will also be converted to HTML.
 
+Links to \"file.org.gpg\" are also converted.
+
 When nil, the links still point to the plain \".org\" file."
   :group 'org-export-html
   :type 'boolean)
@@ -3066,12 +3068,13 @@ (defun org-html-link (link desc info)
 	  (lambda (raw-path info)
 	    ;; Treat links to `file.org' as links to `file.html', if
 	    ;; needed.  See `org-html-link-org-files-as-html'.
-	    (cond
-	     ((and (plist-get info :html-link-org-files-as-html)
-		   (string= ".org"
-			    (downcase (file-name-extension raw-path "."))))
-	      (concat (file-name-sans-extension raw-path) dot html-ext))
-	     (t raw-path))))
+            (save-match-data
+	      (cond
+	       ((and (plist-get info :html-link-org-files-as-html)
+                     (let ((case-fold-search t))
+                       (string-match "\\(.+\\)\\.org\\(?:\\.gpg\\)?$" raw-path)))
+	        (concat (match-string 1 raw-path) dot html-ext))
+	       (t raw-path)))))
 	 (type (org-element-property :type link))
 	 (raw-path (org-element-property :path link))
 	 ;; Ensure DESC really exists, or set it to nil.
-- 
2.35.1

Re: Org Publish HTML and PDF With GPG Files

[Ihor Radchenko]

David Masterson <dsmasterson@gmail.com> writes:

> Does org-publish have options for files with org-crypt entries?

We do not have an explicit option, but you can add org-decrypt-entries
to your org-export-before-processing-hook.

-- 
Ihor Radchenko,
Org mode contributor,
Learn more about Org mode at https://orgmode.org/.
Support Org development at https://liberapay.com/org-mode,
or support my work at https://liberapay.com/yantar92

Re: Org Publish HTML and PDF With GPG Files

[David Masterson]

Ihor Radchenko <yantar92@gmail.com> writes:

> David Masterson <dsmasterson@gmail.com> writes:
>
>> Does org-publish have options for files with org-crypt entries?
>
> We do not have an explicit option, but you can add org-decrypt-entries
> to your org-export-before-processing-hook.

Thanks

-- 
David Masterson

Re: Org Publish HTML and PDF With GPG Files

[lehi]

Ihor Radchenko yantar92@gmail.com writes:
> 
> > David Masterson dsmasterson@gmail.com writes:
> > 
> > > Does org-publish have options for files with org-crypt entries?
> > 
> > We do not have an explicit option, but you can add org-decrypt-entries
> > to your org-export-before-processing-hook.
> 
> 
> Thanks
> 
> --
> David Masterson

Is there a specific way of setting this in the config?
I tried adding `(add-hook 'org-export-before-processing-hook #'org-decrypt-entries)` to my init.el, but publishing fails with the error "run-hook-with-args: Wrong number of arguments: (0 . 0), 1"

Re: Org Publish HTML and PDF With GPG Files

[David Masterson]

lehi@tosk.in writes:

> Ihor Radchenko yantar92@gmail.com writes:
>> 
>> > David Masterson dsmasterson@gmail.com writes:
>> > 
>> > > Does org-publish have options for files with org-crypt entries?
>> > 
>> > We do not have an explicit option, but you can add org-decrypt-entries
>> > to your org-export-before-processing-hook.
>> 
>> Thanks

> Is there a specific way of setting this in the config?
> I tried adding `(add-hook 'org-export-before-processing-hook
> #'org-decrypt-entries)` to my init.el, but publishing fails with the
> error "run-hook-with-args: Wrong number of arguments: (0 . 0), 1"

Been awhile -- what's the purpose of the '#' character?

-- 
David Masterson

Re: Org Publish HTML and PDF With GPG Files

[tomas]

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On Mon, Sep 05, 2022 at 09:08:13PM -0700, David Masterson wrote:
> lehi@tosk.in writes:
> 
> > Ihor Radchenko yantar92@gmail.com writes:
> >> 
> >> > David Masterson dsmasterson@gmail.com writes:
> >> > 
> >> > > Does org-publish have options for files with org-crypt entries?
> >> > 
> >> > We do not have an explicit option, but you can add org-decrypt-entries
> >> > to your org-export-before-processing-hook.
> >> 
> >> Thanks
> 
> > Is there a specific way of setting this in the config?
> > I tried adding `(add-hook 'org-export-before-processing-hook
> > #'org-decrypt-entries)` to my init.el, but publishing fails with the
> > error "run-hook-with-args: Wrong number of arguments: (0 . 0), 1"
> 
> Been awhile -- what's the purpose of the '#' character?

Its nickname is "sharp-quote" (actually the whole #' thingy is called
like that). As ' is just a shorthand for 'quote' (i.e. 'foo is a
shorthand for (quote foo), #' is a shorthand for 'function, i.e.
#'foo stands for (function foo), meaning "the function the symbol
foo refers to".

Being Emacs Lisp, you could just have said 'foo, but this has quite
a few downsides, one of them being that you blindside your compiler
(And your human readers).

Cheers
-- 
t

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Re: Org Publish HTML and PDF With GPG Files

[Ihor Radchenko]

lehi@tosk.in writes:

> Is there a specific way of setting this in the config?
> I tried adding `(add-hook 'org-export-before-processing-hook #'org-decrypt-entries)` to my init.el, but publishing fails with the error "run-hook-with-args: Wrong number of arguments: (0 . 0), 1"

This is abnormal hook and the added functions must accept a single
argument - the export backend symbol (see the docstring).

It is indeed confusing. On main, I changed
`org-export-before-processing-hook' to
`org-export-before-processing-functions' to indicate that it is abnormal
hook.
https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=fe90cab9564bd6fa08c9abe0882e0e06cc5626f9

-- 
Ihor Radchenko,
Org mode contributor,
Learn more about Org mode at https://orgmode.org/.
Support Org development at https://liberapay.com/org-mode,
or support my work at https://liberapay.com/yantar92

Re: Org Publish HTML and PDF With GPG Files

[David Masterson]

<tomas@tuxteam.de> writes:

> On Mon, Sep 05, 2022 at 09:08:13PM -0700, David Masterson wrote:
>> lehi@tosk.in writes:
>> 
>> > Ihor Radchenko yantar92@gmail.com writes:
>> >> 
>> >> > David Masterson dsmasterson@gmail.com writes:
>> >> > 
>> >> > > Does org-publish have options for files with org-crypt entries?
>> >> > 
>> >> > We do not have an explicit option, but you can add org-decrypt-entries
>> >> > to your org-export-before-processing-hook.
>> >> 
>> >> Thanks
>> 
>> > Is there a specific way of setting this in the config?
>> > I tried adding `(add-hook 'org-export-before-processing-hook
>> > #'org-decrypt-entries)` to my init.el, but publishing fails with the
>> > error "run-hook-with-args: Wrong number of arguments: (0 . 0), 1"
>> 
>> Been awhile -- what's the purpose of the '#' character?
>
> Its nickname is "sharp-quote" (actually the whole #' thingy is called
> like that). As ' is just a shorthand for 'quote' (i.e. 'foo is a
> shorthand for (quote foo), #' is a shorthand for 'function, i.e.
> #'foo stands for (function foo), meaning "the function the symbol
> foo refers to".
>
> Being Emacs Lisp, you could just have said 'foo, but this has quite
> a few downsides, one of them being that you blindside your compiler
> (And your human readers).
>
> Cheers

Ah ha! Thanks

-- 
David Masterson

Re: [PATCH] Re: Org Publish HTML and PDF With GPG Files

[Ihor Radchenko]

Ihor Radchenko <yantar92@gmail.com> writes:

> Subject: [PATCH] ox-publish: Allow linking to encrypted Org files
>

Applied onto main.
https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=f99902ecdfa4357035fb04f44b3baa8cec260530

-- 
Ihor Radchenko,
Org mode contributor,
Learn more about Org mode at https://orgmode.org/.
Support Org development at https://liberapay.com/org-mode,
or support my work at https://liberapay.com/yantar92