Re: ox-publish export subtree scopes?

[Narendra Joshi <narendraj9@gmail.com>]

Kaushal Modi <kaushal.modi@gmail.com> writes:

> On Tue, Dec 5, 2017 at 7:31 AM Rasmus <rasmus@gmx.us> wrote:
>
>     If you have any suggestions on how to improve ox-publish to
>     better suit
>     please share them.
>
>
> Hello Rasmus,
>
> I'd like to make the ox-publish based exporting working for my
> ox-hugo[1] package but so far have been unsuccessful.
>
> The main reason is that org-foo-publish-to-bar functions take only
> plist, filename and pub-dir as args. I miss the ability to first pick
> a subtree scope from the specific Org file and then export only that.
> Is something like that already possible which I am missing?
>
> In addition, when given a file name, I need to auto-decide (i) if I
> need to cycle through "valid" subtrees (see more about that below)
> and export those subtrees,or (ii) export the whole Org file if #
> +TITLE is present.
>
> So I ended up with org-hugo-export-wim-to-md[2] ("wim" stands for
> What I Mean). Below is a snippet from its doc string:
>
> =====
> - If the current subtree has the \"EXPORT_FILE_NAME\" property,
> export
>   that subtree.
> - If the current subtree doesn't have that property, but one of its
>   parent subtrees has, then export from that subtree's scope.
> - If none of the subtrees have that property (or if there are no Org
>   subtrees at all), but the Org #+TITLE keyword is present,
>   export the whole Org file as a post with that title (calls
>   `org-hugo-export-to-md' with its SUBTREEP argument set to nil).
>
> - If ALL-SUBTREES is non-nil, export all valid Hugo post subtrees
>   \(that have the \"EXPORT_FILE_NAME\" property) in the current file
>   to multiple Markdown posts.
> - If ALL-SUBTREES is non-nil, and again if none of the subtrees have
>   that property (or if there are no Org subtrees), but the Org #
> +TITLE
>   keyword is present, export the whole Org file.
>
> - If the file neither has valid Hugo post subtrees, nor has the
>   #+TITLE present, throw a user error.  If NOERROR is non-nil, use
>   `message' to display the error message instead of signaling a user
>   error.
> =====
>
> And I use a Makefile[3] to find all Org files in the current directly
> and call the above function, which then does the right thing as
> explained in the conditions above.
>
> Is there any way to call org-publish to export either the entire file
> or cycle through the file and export the subtrees matching a
> predicate?
>
> [1]: https://github.com/kaushalmodi/ox-hugo
> [2]: https://github.com/kaushalmodi/ox-hugo/blob/
> 832a5d7424013f60b77354ec28613440afac0269/ox-hugo.el#L2424-L2448
> [3]: https://github.com/kaushalmodi/ox-hugo/blob/master/Makefile
> --
>
> Kaushal Modi

I have faced something similar (or maybe not very similar) while using
`org-publish' for my static blog. I wanted to wrap everything inside
body in a container and a row (bootstrap classes). The functions
provided do not let me do this conveniently. I can define `content',
`preamble' and `postamble' but cannot wrap all three of them inside a
`div' without overriding the whole export function.

Best,
-- 
Narendra Joshi