* ob-clojure-literate.el (Clojure Literate Programming in Org-mode): Add.

Stable version.

contrib/lisp/ob-clojure-literate.el

@@ -0,0 +1,277 @@
+;;; ob-clojure-literate.el --- Clojure's Org-mode Literate Programming.
+
+;; Authors: stardiviner <numbchild@gmail.com>
+;; Package-Requires: ((emacs "24.4") (org "9") (cider "0.16.0") (dash "2.12.0"))
+;; Package-Version: 1.1
+;; Keywords: tools
+;; homepage: https://github.com/stardiviner/ob-clojure-literate
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; Auto setup ob-clojure-literate scaffold and jack-in Clojure project.
+;;
+;; Usage:
+;;
+;; [M-x ob-clojure-literate-mode] to toggle this minor mode.
+
+;;; Code:
+
+(require 'ob-clojure)
+(require 'cider)
+(require 'dash)
+
+(defgroup ob-clojure-literate nil
+  "Clojure's Org-mode Literate Programming."
+  :prefix "ob-clojure-literate-"
+  :group 'ob-babel)
+
+;;;###autoload
+(defcustom ob-clojure-literate-auto-jackin-p nil
+  "Auto jack in ob-clojure project.
+Don't auto jack in by default for not rude."
+  :type 'boolean
+  :group 'ob-clojure-literate)
+
+(defcustom ob-clojure-literate-project-location (concat user-emacs-directory "Org-mode/")
+  "The location for `ob-clojure-literate' scaffold project."
+  :type 'string
+  :group 'ob-clojure-literate)
+
+(defvar ob-clojure-literate-session nil)
+(defvar ob-clojure-literate-original-ns nil)
+(defvar ob-clojure-literate-session-ns nil)
+(defvar ob-clojure-literate-cider-connections nil)
+
+(defcustom ob-clojure-literate-default-session "*cider-repl ob-clojure*"
+  "The default session name for `ob-clojure-literate'."
+  :type 'string
+  :group 'ob-clojure-literate)
+
+(defun ob-clojure-literate-any-connection-p ()
+  "Return t if have any CIDER connection."
+  (and
+   ;; handle the case `cider-jack-in' is not finished creating connection, but `ob-clojure-literate-mode' is enabled.
+   (not (null (cider-connections)))
+   (not (null ob-clojure-literate-session)) ; before mode enabled, it is nil.
+   (not (string-empty-p ob-clojure-literate-session)) ; after disable, it is "".
+   ))
+
+(defun ob-clojure-literate-get-session-list ()
+  "Return a list of available started CIDER REPL sessions list."
+  (-map 'buffer-name cider-connections))
+
+(defun ob-clojure-literate-set-session ()
+  "Set session name for buffer local."
+  ;; if default session is the only one in connections list.
+  (if (and (= (length (ob-clojure-literate-get-session-list)) 1)
+           (-contains-p (ob-clojure-literate-get-session-list) ob-clojure-literate-default-session))
+      (setq-local ob-clojure-literate-session ob-clojure-literate-default-session)
+    ;; if have any connections, choose one from them.
+    (if (ob-clojure-literate-any-connection-p)
+        (setq-local ob-clojure-literate-session
+                    (completing-read "Choose ob-clojure-literate :session : "
+                                     (ob-clojure-literate-get-session-list)))
+      ;; if none, set to default session name to fix `ob-clojure-literate-mode'
+      ;; is enabled before `cider-jack-in' generated connections.
+      (setq-local ob-clojure-literate-session ob-clojure-literate-default-session))
+    ))
+
+;;;###autoload
+(defun ob-clojure-literate-specify-session-header-argument ()
+  "Specify ob-clojure header argument :session with value selected from a list of available sessions."
+  (interactive)
+  (let ((lang (nth 0 (org-babel-get-src-block-info))))
+    (if (and (string= lang "clojure") ; only in clojure src block.
+             (car (seq-filter ; only when :session is not specified yet.
+                   (lambda (header-argument)
+                     (if (eq (car header-argument) :session)
+                         (not (null (cdr header-argument)))))
+                   (nth 2 (org-babel-get-src-block-info)))))
+        (org-babel-insert-header-arg
+         "session"
+         (format "\"%s\""
+                 (completing-read
+                  "Choose :session for ob-clojure-literate: "
+                  (ob-clojure-literate-get-session-list))))
+      (message "This function only used in `clojure' src block.")))
+  )
+
+;;; Auto start CIDER REPL session in a complete Leiningen project environment for Org-mode Babel to jack-in.
+;;;###autoload
+(defun ob-clojure-literate-auto-jackin ()
+  "Auto setup ob-clojure-literate scaffold and jack-in Clojure project."
+  (interactive)
+  (unless (file-directory-p (expand-file-name ob-clojure-literate-project-location))
+    (make-directory ob-clojure-literate-project-location t)
+    (let ((default-directory ob-clojure-literate-project-location))
+      (shell-command "lein new ob-clojure")))
+  (unless (or
+           (and (cider-connected-p)
+                (if (not (null ob-clojure-literate-session))
+                    (seq-contains cider-connections (get-buffer ob-clojure-literate-session))))
+           cider-connections
+           (not (null ob-clojure-literate-session)))
+    ;; return back to original file.
+    (if (not (and (= (length (ob-clojure-literate-get-session-list)) 1)
+                  (-contains-p (ob-clojure-literate-get-session-list) ob-clojure-literate-default-session)))
+        (save-window-excursion
+          (find-file (expand-file-name (concat ob-clojure-literate-project-location "ob-clojure/src/ob_clojure/core.clj")))
+          (with-current-buffer "core.clj"
+            (cider-jack-in))))))
+
+(defun ob-clojure-literate-set-local-cider-connections (toggle?)
+  "Set buffer local `cider-connections' for `ob-clojure-literate-mode' `TOGGLE?'."
+  (if toggle?
+      (progn
+        (setq ob-clojure-literate-cider-connections cider-connections)
+        (unless (local-variable-if-set-p 'cider-connections)
+          (make-local-variable 'cider-connections))
+        (setq-local cider-connections ob-clojure-literate-cider-connections))
+    ;; store/restore emptied CIDER connections by `ob-clojure-literate-enable'.
+    (kill-local-variable 'cider-connections) ; kill local variable so that I can get the original global variable value.
+    ;; Empty all CIDER connections to avoid `cider-current-connection' return any connection.
+    ;; FIXME: when try to enable, `cider-connections' is local and nil.
+    ;; (if (and (= (length (ob-clojure-literate-get-session-list)) 1)
+    ;;          (-contains-p (ob-clojure-literate-get-session-list) ob-clojure-literate-default-session)))
+    ;; (unless (local-variable-if-set-p 'cider-connections)
+    ;;   (make-local-variable 'cider-connections))
+    ;; (setq-local cider-connections '())
+    ))
+
+(defun ob-clojure-literate-cider-do-not-find-ns (body params)
+  "Fix the issue that `cider-current-ns' try to invoke `clojure-find-ns' to extract ns from buffer."
+  ;; TODO: Is it possible to find ns in `body'?
+  (when (ob-clojure-literate-any-connection-p)
+    (setq ob-clojure-literate-original-ns (cider-current-ns))
+    (with-current-buffer ob-clojure-literate-session
+      (setq ob-clojure-literate-session-ns cider-buffer-ns))
+    (setq-local cider-buffer-ns ob-clojure-literate-session-ns))
+  (message (format "ob-clojure-literate: current CIDER ns is [%s]." cider-buffer-ns)))
+
+(defun ob-clojure-literate-set-local-session (toggle?)
+  "Set buffer local `org-babel-default-header-args:clojure' for `ob-clojure-literate-mode' `TOGGLE?'."
+  (if toggle?
+      (progn
+        ;; set local default session for ob-clojure.
+        (setq ob-clojure-literate-session (ob-clojure-literate-set-session))
+        (unless (local-variable-if-set-p 'org-babel-default-header-args:clojure)
+          (make-local-variable 'org-babel-default-header-args:clojure))
+        (add-to-list 'org-babel-default-header-args:clojure
+                     `(:session . ,ob-clojure-literate-session))
+        )
+    ;; remove :session from buffer local default header arguments list.
+    (unless (local-variable-if-set-p 'org-babel-default-header-args:clojure)
+      (make-local-variable 'org-babel-default-header-args:clojure))
+    (setq org-babel-default-header-args:clojure
+          (delq t
+                (mapcar
+                 (lambda (cons) (if (eq (car cons) :session) t cons))
+                 org-babel-default-header-args:clojure)))
+    ))
+
+;;; Support `org-babel-initiate-session' / [C-c C-v z] to initialize Clojure session.
+
+(defun org-babel-clojure-initiate-session (&optional session _params)
+  "Initiate a session named SESSION according to PARAMS."
+  (when (and session (not (string= session "none")))
+    (save-window-excursion
+      (unless (org-babel-comint-buffer-livep session)
+        ;; CIDER jack-in to the Clojure project directory.
+        (cond
+         ((eq org-babel-clojure-backend 'cider)
+          (require 'cider)
+          (let ((session-buffer (save-window-excursion
+                                  (cider-jack-in t)
+                                  (current-buffer))))
+            (if (org-babel-comint-buffer-livep session-buffer)
+                (progn (sit-for .25) session-buffer))))
+         ((eq org-babel-clojure-backend 'slime)
+          (error "Session evaluation with SLIME is not supported"))
+         (t
+          (error "Session initiate failed")))
+        )
+      (get-buffer session)
+      )))
+
+(defun org-babel-prep-session:clojure (session params)
+  "Prepare SESSION according to the header arguments specified in PARAMS."
+  (let* ((session (org-babel-clojure-initiate-session session))
+         (var-lines (org-babel-variable-assignments:clojure params)))
+    (when session
+      (org-babel-comint-in-buffer session
+        (mapc (lambda (var)
+                (insert var) (comint-send-input nil t)
+		(org-babel-comint-wait-for-output session)
+		(sit-for .1) (goto-char (point-max))) var-lines)))
+    session))
+
+(defun org-babel-clojure-var-to-clojure (var)
+  "Convert src block's `VAR' to Clojure variable."
+  ;; TODO: reference `org-babel-python-var-to-python'
+  )
+
+(defun org-babel-variable-assignments:clojure (params)
+  "Return a list of Clojure statements assigning the block's variables in `PARAMS'."
+  (mapcar
+   (lambda (pair)
+     (format "(def %s %s)"
+             (car pair)
+             ;; (org-babel-clojure-var-to-clojure (cdr pair))
+             (cdr pair)))
+   (org-babel--get-vars params)))
+
+
+(defvar ob-clojure-literate-mode-map
+  (let ((map (make-sparse-keymap)))
+    map)
+  "Keymap for `ob-clojure-literate-mode'.")
+
+(define-key org-babel-map (kbd "M-s") 'ob-clojure-literate-specify-session-header-argument)
+(define-key org-babel-map (kbd "M-j") 'ob-clojure-literate-auto-jackin)
+;; (define-key org-babel-map (kbd "M-e") 'cider-eval-last-sexp)
+;; (define-key org-babel-map (kbd "M-d") 'cider-doc)
+
+;;;###autoload
+(defun ob-clojure-literate-enable ()
+  "Enable Org-mode buffer locally for `ob-clojure-literate'."
+  (when (and (not (null cider-connections)) ; only enable `ob-clojure-literate-mode' when has CIDER connections.
+             (equal major-mode 'org-mode)) ; `ob-clojure-literate-mode' only works in `org-mode'.
+    (ob-clojure-literate-set-local-cider-connections ob-clojure-literate-mode)
+    (ob-clojure-literate-set-local-session ob-clojure-literate-mode)
+    (advice-add 'org-babel-execute:clojure :before #'ob-clojure-literate-cider-do-not-find-ns)
+    (message "ob-clojure-literate minor mode enabled.")))
+
+;;;###autoload
+(defun ob-clojure-literate-disable ()
+  "Disable Org-mode buffer locally for `ob-clojure-literate'."
+  (advice-remove 'org-babel-execute:clojure #'ob-clojure-literate-cider-do-not-find-ns)
+  (setq-local cider-buffer-ns ob-clojure-literate-original-ns)
+  (ob-clojure-literate-set-local-cider-connections ob-clojure-literate-mode)
+  (ob-clojure-literate-set-local-session ob-clojure-literate-mode)
+  (message "ob-clojure-literate minor mode disabled."))
+
+;;;###autoload
+(if ob-clojure-literate-auto-jackin-p (ob-clojure-literate-auto-jackin))
+
+;;;###autoload
+(define-minor-mode ob-clojure-literate-mode
+  "A minor mode to toggle `ob-clojure-literate'."
+  :require 'ob-clojure-literate
+  :init-value t
+  :lighter " clj-lp"
+  :group 'ob-clojure-literate
+  :keymap ob-clojure-literate-mode-map
+  :global nil
+  (if ob-clojure-literate-mode
+      (ob-clojure-literate-enable)
+    (ob-clojure-literate-disable))
+  )
+
+
+
+(provide 'ob-clojure-literate)
+
+;;; ob-clojure-literate.el ends here