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From: Daniel P Gomez <gomez.danp@gmail.com>
To: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Cc: emacs-orgmode@gnu.org
Subject: Re: How to keep correct filepaths when using the #+INCLUDE derivative?
Date: Sat, 3 Mar 2018 14:06:05 +0100	[thread overview]
Message-ID: <CAJTMgxhg6=h+FP1YGsZh0YYDn0mz0ytfvBEoB=7riFVGrJb6rg@mail.gmail.com> (raw)
In-Reply-To: <878tbahrxv.fsf@nicolasgoaziou.fr>

Hi,


> `org-export--prepare-file-contents' is called from the including
> document, so you can get its path with (buffer-file-name
> (buffer-base-buffer)).
>
> However, we need to handle the case where the including buffer is not
> associated to a file, i.e., the Sexp above returns nil.
>

I noticed that (buffer-file-name (buffer-base-buffer)) will always
return nil because `org-export--prepare-file-contents` is called in
`org-export-include-keyword` after a call to `with-temp-buffer`. Two
possible solutions to this issue would be either 1. passing the
includer-file as an extra parameter to
`org-export--prepare-file-contents` and then using
`file-relative-name` to generate a relative path, or alternatively 2 .
passing the matched string that points to the file to be included.
Example:

#+INCLUDE: "directory/file.org"

Here, if file.org contains a link [[other/image.png]], then all one
has to do is append the (file-name-directory matched) to the old-path.
In this example this would result in directory/other/image.png.

This second solution does not require a call to (buffer-file-name
(buffer-base-buffer)), but seems hackish in the sense that we would
pass 2 redundant arguments to `org-export-prepare-file-contents`: both
the expanded and the non-expanded include-file filename.
Perhaps I'm missing a simpler 3rd solution?


> It would be nice to add a comment explaining what we are going to do.
>
Of course.

    ;; Adapt all file links within the included document that
    ;; contain relative paths in order to make these paths
    ;; relative to the base document, or absolute

> I suggest the following inner part:
>
>     (when (string= "file" (org-element-property :type link))
>       (let* ((old-path (org-element-property :path link))
>              (new-path (expand-file-name old-path (file-name-directory file))))

I noticed that the call to delete here will break
`org-element-adopt-elements` later on since the real buffer positions
will be changed and we are still querying for old, invalid positions
stored in link.
>         ;; (delete-region (org-element-property :begin link)
>         ;;               (org-element-property :end link))
>         (insert (let ((new (org-element-copy link)))

If we opt for solution 1 then new-path could be made relative here
>                  ;; (org-element-put-property new :path new-path)

(org-element-put-property
               new :path
               (if includer-file
               (file-relative-name
                new-path (file-name-directory includer-file))
             new-path))

>                   (when (org-element-property :contents-begin link)
>                     (org-element-adopt-elements new
>                       (buffer-substring (org-element-property :contents-begin link)
>                                         (org-element-property :contents-end link))))

Deleting immediately before the insertion works.
    (delete-region (org-element-property :begin link)
                           (org-element-property :end link))

>                   (org-element-interpret-data new)))))
>
> Also, would you mind adding a test in "text-ox.el", within
> `test-org-export/expand-include'?

I will attempt to write them once the implementation is completed.

Thanks for the support.

Regards,

Daniel

> Regards,
>
> --
> Nicolas Goaziou

  reply	other threads:[~2018-03-03 13:06 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-28 13:29 How to keep correct filepaths when using the #+INCLUDE derivative? Daniel P Gomez
2018-02-28 17:51 ` Nicolas Goaziou
2018-02-28 20:11   ` Daniel P Gomez
2018-03-01  1:01     ` Daniel P Gomez
2018-03-01 18:32       ` Nicolas Goaziou
2018-03-01 18:56         ` Daniel P Gomez
2018-03-01 22:42           ` Nicolas Goaziou
2018-03-02 14:16             ` Daniel P Gomez
2018-03-03  1:24               ` Nicolas Goaziou
2018-03-03 13:06                 ` Daniel P Gomez [this message]
2018-03-06  8:51                   ` Nicolas Goaziou
2018-03-10 11:28                     ` Daniel P. Gomez
2018-03-18 15:15                       ` Nicolas Goaziou

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