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emacs-jupyter/jupyter-org-extensions.el

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;;; jupyter-org-extensions.el --- Jupyter Org Extensions -*- lexical-binding: t; -*-
;; Copyright (C) 2018 Nathaniel Nicandro
;; Author: Carlos Garcia C. <carlos@binarycharly.com>
;; Created: 01 March 2019
;; Version: 0.7.3
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 2, or (at
;; your option) any later version.
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; Functions that extend the functionality of Org mode to interact with
;; jupyter source blocks.
;;; Code:
(require 'jupyter-org-client)
(declare-function org-babel-jupyter-initiate-session "ob-jupyter" (&optional session params))
(declare-function org-in-src-block-p "org" (&optional inside))
(declare-function org-element-context "org-element" (&optional element))
(declare-function org-element-property "org-element" (property element))
(declare-function org-element-interpret-data "org-element" (data))
(declare-function org-element-put-property "org-element" (element property value))
(declare-function outline-show-entry "outline" ())
(declare-function avy-with "ext:avy")
(declare-function avy-jump "ext:avy")
(declare-function ivy-read "ext:ivy")
(defcustom jupyter-org-jump-to-block-context-lines 3
"Number of lines to show when showing the context of a block.
The function `jupyter-org-jump-to-block' uses these many lines from the
beginning of a source block in a list."
:group 'ob-jupyter
:type 'integer)
;;;###autoload
(defun jupyter-org-insert-src-block (&optional below)
"Insert a src block above the current point.
With prefix arg BELOW, insert it below the current point.
If point is in a block, copy the header to the new block"
(interactive "P")
(if (org-in-src-block-p)
(let* ((src (org-element-context))
(start (org-element-property :begin src))
(end (org-element-property :end src))
(lang (org-element-property :language src))
(switches (org-element-property :switches src))
(parameters (org-element-property :parameters src))
location)
(if below
(progn
(goto-char start)
(setq location (org-babel-where-is-src-block-result))
(if (not location)
(goto-char end)
(goto-char location)
(goto-char (org-element-property :end (org-element-context))))
(insert
(org-element-interpret-data
(org-element-put-property
(jupyter-org-src-block lang parameters "\n" switches)
:post-blank 1)))
(forward-line -3))
;; after current block
(goto-char (org-element-property :begin src))
(insert
(org-element-interpret-data
(org-element-put-property
(jupyter-org-src-block lang parameters "\n" switches)
:post-blank 1)))
(forward-line -3)))
;; not in a src block, insert a new block, query for jupyter kernel
(let* ((kernelspec (jupyter-completing-read-kernelspec))
(lang (format "jupyter-%s" (plist-get (cddr kernelspec) :language)))
(src-block (jupyter-org-src-block lang "" "\n"))
(blank-after-p (not (zerop (save-excursion
(1- (skip-chars-forward "\n")))))))
(beginning-of-line)
;; When there is no blank line before the source block, insert one
(when (zerop (save-excursion
(1+ (skip-chars-backward "\n"))))
(insert "\n"))
(insert (org-element-interpret-data src-block))
;; When there was already blank lines after the source block, delete the
;; newline added by `org-element-interpret-data'
(when blank-after-p
(delete-char 1))
(skip-chars-backward "\n")
(forward-line -1))))
;;;###autoload
(defun jupyter-org-split-src-block (&optional below)
"Split the current src block with point in upper block.
With a prefix BELOW move point to lower block."
(interactive "P")
(unless (org-in-src-block-p)
(error "Not in a source block"))
(beginning-of-line)
(org-babel-demarcate-block)
(if below
(progn
(org-babel-next-src-block)
(forward-line)
(open-line 1))
(forward-line -2)
(end-of-line)))
;;;###autoload
(defun jupyter-org-execute-and-next-block (&optional new)
"Execute his block and jump or add a new one.
If a new block is created, use the same language, switches and parameters.
With prefix arg NEW, always insert new cell."
(interactive "P")
(unless (org-in-src-block-p)
(error "Not in a source block"))
(let ((next-src-block
(save-excursion (ignore-errors (org-babel-next-src-block)))))
;; instert a new block before executing the current block; otherwise, the new
;; ... block gets added to the results of the next block (due to how
;; ... jupyter works)
(when (or new (not next-src-block))
(save-excursion
(jupyter-org-insert-src-block t)))
(org-babel-execute-src-block)
(org-babel-next-src-block)))
;;;###autoload
(defun jupyter-org-execute-to-point ()
"Execute all the src blocks that start before point."
(interactive)
(let ((p (point)))
(save-excursion
(goto-char (point-min))
(while (and (org-babel-next-src-block) (< (point) p))
(org-babel-execute-src-block)))))
;;;###autoload
(defun jupyter-org-inspect-src-block ()
"Inspect the symbol under point when in a source block."
(interactive)
(unless (jupyter-org-with-src-block-client
(jupyter-inspect-at-point)
t)
(error "Not in a source block")))
;;;###autoload
(defun jupyter-org-restart-kernel-execute-block ()
"Restart the kernel of the source block where point is and execute it."
(interactive)
(jupyter-org-with-src-block-client
(jupyter-repl-restart-kernel))
(org-babel-execute-src-block-maybe))
;;;###autoload
(defun jupyter-org-restart-and-execute-to-point ()
"Kill the kernel and run src-blocks to point."
(interactive)
(jupyter-org-with-src-block-client
(jupyter-repl-restart-kernel))
(jupyter-org-execute-to-point))
;;;###autoload
(defun jupyter-org-restart-kernel-execute-buffer ()
"Restart kernel and execute buffer."
(interactive)
(jupyter-org-with-src-block-client
(jupyter-repl-restart-kernel))
(org-babel-execute-buffer))
;;;###autoload
(defun jupyter-org-jump-to-block (&optional context)
"Jump to a source block in the buffer using `ivy'.
If narrowing is in effect, jump to a block in the narrowed region.
Use a numeric prefix CONTEXT to specify how many lines of context to showin the
process of selecting a source block.
Defaults to `jupyter-org-jump-to-block-context-lines'."
(interactive
(list (if current-prefix-arg
(prefix-numeric-value current-prefix-arg)
jupyter-org-jump-to-block-context-lines)))
(unless (require 'ivy nil t)
(error "Package `ivy' not installed"))
(let ((blocks '()))
(when (or (null context) (< context 1))
(setq context jupyter-org-jump-to-block-context-lines))
;; consider the #+SRC_BLOCK line of the block, thereby making CONTEXT
;; ... equivalent to actual lines after the block header
(setq context (1+ context))
(save-excursion
(goto-char (point-min))
(while (re-search-forward org-babel-src-block-regexp nil t)
(push (list (format "line %s:\n%s"
(line-number-at-pos (match-beginning 0))
(save-excursion
(goto-char (match-beginning 0))
(let ((s (point)))
(forward-line context)
(buffer-substring s (point)))))
(line-number-at-pos (match-beginning 0)))
blocks)))
(ivy-read "block: " (reverse blocks)
:action (lambda (candidate)
(goto-char (point-min))
(forward-line (1- (nth 1 candidate)))
(ignore-errors (outline-show-entry))
(recenter)))))
;;;###autoload
(defun jupyter-org-jump-to-visible-block ()
"Jump to a visible src block with avy."
(interactive)
(unless (require 'avy nil t)
(error "Package `avy' not installed"))
(avy-with #'jupyter-org-jump-to-block
(avy-jump "#\\+begin_src" :beg (point-min) :end (point-max))))
;;;###autoload
(defun jupyter-org-edit-header ()
"Edit the src-block header in the minibuffer."
(interactive)
(let ((src-info (org-babel-get-src-block-info 'light)))
(unless src-info
(error "Not in a source block"))
(let* ((header-start (nth 5 src-info))
(header-end (save-excursion (goto-char header-start)
(line-end-position))))
(setf (buffer-substring header-start header-end)
(read-string "Header: "
(buffer-substring header-start header-end))))))
(defun jupyter-org-src-block-bounds ()
"Return the region containing the current source block.
If the source block has results, include the results in the
returned region. The region is returned as (BEGIN . END)"
(unless (org-in-src-block-p)
(error "Not in a source block"))
(let* ((src (org-element-context))
(results-start (org-babel-where-is-src-block-result))
(results-end
(when results-start
(save-excursion
(goto-char results-start)
(goto-char (org-babel-result-end))
;; if results are empty, take its empy line
(when (looking-at-p org-babel-result-regexp)
(forward-line 1))
(point)))))
`(,(org-element-property :begin src) .
,(or results-end (jupyter-org-element-end-before-blanks src)))))
;;;###autoload
(defun jupyter-org-kill-block-and-results ()
"Kill the block and its results."
(interactive)
(let ((region (jupyter-org-src-block-bounds)))
(kill-region (car region) (cdr region))))
;;;###autoload
(defun jupyter-org-copy-block-and-results ()
"Copy the src block at the current point and its results."
(interactive)
(let ((region (jupyter-org-src-block-bounds)))
(kill-new (buffer-substring (car region) (cdr region)))))
;;;###autoload
(defun jupyter-org-clone-block (&optional below)
"Clone the block above the current block.
If BELOW is non-nil, add the cloned block below."
(interactive "P")
(let* ((src (org-element-context))
(code (org-element-property :value src)))
(unless (org-in-src-block-p)
(error "Not in a source block"))
(jupyter-org-insert-src-block below)
(delete-char 1)
(insert code)
;; move to the end of the last line of the cloned block
(forward-line -1)
(end-of-line)))
;;;###autoload
(defun jupyter-org-merge-blocks ()
"Merge the current block with the next block."
(interactive)
(unless (org-in-src-block-p)
(error "Not in a source block"))
(let ((current-src-block (org-element-context)))
(org-babel-remove-result)
(org-babel-next-src-block)
(let* ((next-src-block (prog1 (org-element-context)
(org-babel-remove-result)))
(next-src-block-beg (set-marker
(make-marker)
(org-element-property :begin next-src-block)))
(next-src-block-end (set-marker
(make-marker)
(jupyter-org-element-end-before-blanks next-src-block))))
(goto-char (jupyter-org-element-end-before-blanks current-src-block))
(forward-line -1)
(insert
(delete-and-extract-region
(save-excursion
(goto-char (jupyter-org-element-begin-after-affiliated next-src-block))
(forward-line 1)
(point))
(save-excursion
(goto-char next-src-block-end)
(forward-line -1)
(point))))
;; delete a leftover space
(save-excursion
(goto-char next-src-block-end)
(when (looking-at-p "[[:space:]]*$")
(set-marker next-src-block-end (+ (point-at-eol) 1))))
(delete-region next-src-block-beg next-src-block-end)
(set-marker next-src-block-beg nil)
(set-marker next-src-block-end nil)))
;; move to the end of the last line
(forward-line -1)
(end-of-line))
;;;###autoload
(defun jupyter-org-move-src-block (&optional below)
"Move source block before of after another.
If BELOW is non-nil, move the block down, otherwise move it up."
(interactive)
(unless (org-in-src-block-p)
(error "Not in a source block"))
;; throw error if there's no previous or next source block
(when (ignore-errors
(save-excursion
(if below
(org-babel-next-src-block)
(org-babel-previous-src-block))))
(let* ((region (jupyter-org-src-block-bounds))
(block (delete-and-extract-region (car region) (cdr region))))
;; if there is an empty line remaining, take that line as part of the
;; ... block
(when (and (looking-at-p "[[:space:]]*$") (/= (point) (point-max)))
(delete-region (point-at-bol) (+ (point-at-eol) 1))
(setq block (concat block "\n")))
(if below
;; if below, move past the next source block or its result
(let ((next-src-block-head (org-babel-where-is-src-block-head)))
(if next-src-block-head
(goto-char next-src-block-head)
(org-babel-next-src-block))
(let ((next-src-block (org-element-context))
(next-results-start (org-babel-where-is-src-block-result)))
(if (not next-results-start)
(goto-char (org-element-property :end next-src-block))
(goto-char next-results-start)
(goto-char (org-babel-result-end))
(when (and (looking-at-p org-babel-result-regexp)
(/= (point) (point-max)))
;; the results are empty, take the next empty line
(forward-line 1))
(when (looking-at-p "[[:space:]]*$")
(forward-line 1)))))
;; else, move to the begining of the previous block
(org-babel-previous-src-block))
;; keep cursor where the insertion takes place
(save-excursion (insert block)))))
;;;###autoload
(defun jupyter-org-clear-all-results ()
"Clear all results in the buffer."
(interactive)
(save-excursion
(goto-char (point-min))
(while (org-babel-next-src-block)
(org-babel-remove-result))))
(defun jupyter-org-hydra/body ()
"Hack to bind a hydra only if the hydra package exists."
(interactive)
(unless (require 'hydra nil t)
(error "Package `hydra' not installed"))
;; unbinding this function and define the hydra
(fmakunbound 'jupyter-org-hydra/body)
(eval `(defhydra jupyter-org-hydra (:color blue :hint nil)
"
Execute Navigate Edit Misc
------------------------------------------------------------------------------
_<return>_: current _p_: previous _C-p_: move up _/_: inspect
_C-<return>_: current to next _n_: next _C-n_: move down _l_: clear result
_M-<return>_: to point _g_: visible _x_: kill _L_: clear all
_S-<return>_: Restart/block _G_: any _c_: copy
_S-C-<return>_: Restart/to point ^ ^ _o_: clone
_S-M-<return>_: Restart/buffer ^ ^ _m_: merge
_r_: Goto repl ^ ^ _s_: split
^ ^ ^ ^ _+_: insert above
^ ^ ^ ^ _=_: insert below
^ ^ ^ ^ _h_: header"
("<return>" org-ctrl-c-ctrl-c :color red)
("C-<return>" jupyter-org-execute-and-next-block :color red)
("M-<return>" jupyter-org-execute-to-point)
("S-<return>" jupyter-org-restart-kernel-execute-block)
("S-C-<return>" jupyter-org-restart-and-execute-to-point)
("S-M-<return>" jupyter-org-restart-kernel-execute-buffer)
("r" org-babel-switch-to-session)
("p" org-babel-previous-src-block :color red)
("n" org-babel-next-src-block :color red)
("g" jupyter-org-jump-to-visible-block)
("G" jupyter-org-jump-to-block)
("C-p" jupyter-org-move-src-block :color red)
("C-n" (jupyter-org-move-src-block t) :color red)
("x" jupyter-org-kill-block-and-results)
("c" jupyter-org-copy-block-and-results)
("o" (jupyter-org-clone-block t))
("m" jupyter-org-merge-blocks)
("s" jupyter-org-split-src-block)
("+" jupyter-org-insert-src-block)
("=" (jupyter-org-insert-src-block t))
("l" org-babel-remove-result)
("L" jupyter-org-clear-all-results)
("h" jupyter-org-edit-header)
("/" jupyter-org-inspect-src-block)))
(call-interactively #'jupyter-org-hydra/body))
(define-key jupyter-org-interaction-mode-map (kbd "C-c h") #'jupyter-org-hydra/body)
(provide 'jupyter-org-extensions)
;;; jupyter-org-extensions.el ends here
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