From: Christopher Howard <cmhoward2@alaska.edu>
To: help-gnu-emacs@gnu.org
Subject: Re: exporting nested list to CSV file
Date: Tue, 22 Jul 2014 15:59:04 -0800 [thread overview]
Message-ID: <20140722155904.6dac25b4@voltron.arsc.edu> (raw)
In-Reply-To: <20140722142517.3a7bee43@voltron.arsc.edu>
On Tue, 22 Jul 2014 14:25:17 -0800
Christopher Howard <cmhoward2@alaska.edu> wrote:
>
> Thank you for helping me get started. I also needed to address the
> issues of 1) newlines at the end of rows and 2) character escaping. To
> address the second issue, I used "prin1", which I hope is a good
> enough hack for my purposes:
>
> #+begin_src emacs-lisp
> (defun to-csv-row (fields)
> (mapconcat 'prin1-to-string fields ","))
>
> (defun to-csv-string (nested-list)
> (mapconcat 'to-csv-row nested-list "\n"))
>
> (defun to-csv-file (path nested-list)
> "Converts NESTED-LIST to csv format and exports to file.
> NESTED-LIST is expected to be the structure provided by the pcsv
> library." (with-temp-file path
> (insert (to-csv-string nested-list))))
> #+end_src
For posterity: CSV using repetition to escape quotes inside quotes:
#+begin_src emacs-lisp
(defun csv-quote-field (data)
(mapconcat
'identity
`("\""
,(s-replace-all
'(("\"" . "\"\"")) data)
"\"") ""))
(defun to-csv-row (fields)
(mapconcat 'csv-quote-field fields ","))
(defun to-csv-string (nested-list)
(mapconcat 'to-csv-row nested-list "\n"))
(defun to-csv-file (path nested-list)
"Converts NESTED-LIST to csv format and exports to file. NESTED-LIST is
expected to be the structure provided by the pcsv library."
(with-temp-file path
(insert (to-csv-string nested-list))))
#+end_src
next prev parent reply other threads:[~2014-07-22 23:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-22 18:52 exporting nested list to CSV file Christopher Howard
2014-07-22 19:35 ` Thorsten Jolitz
2014-07-22 22:25 ` Christopher Howard
2014-07-22 23:59 ` Christopher Howard [this message]
2014-07-23 6:19 ` Nicolas Richard
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