At Wed, 21 May 2014 09:30:44 +0200, Bastien wrote: > > Hi Dieter, > > Dieter Schoen <die...@schoen.or.at> writes: > > > i have just sent the email to ass...@gnu.org to start the process. > > Great -- let us know how it goes (can take one month.)
As I wrote off-list, I received the signed pdf yesterday. > In the meantime, you can fix small things like the authors of the > package, the owner of the copyright and such. I have my name to the copyright, but left in the name of the authors of ob-python.el, as I used that as a template. Is that ok? Another change to the first version is that it's now also possible to do :results value and :results value pp. (The first version still had python wrapper code in there.) The Lua pretty-printer function is a home-brew, as Lua does not provide much in that direction out of the box, at least to my knowledge. So here it comes:
;;; ob-lua.el --- org-babel functions for lua evaluation ;; Copyright (C) 2009-2014 Free Software Foundation, Inc. ;; Authors: Eric Schulte ;; Dan Davison ;; Keywords: literate programming, reproducible research ;; Homepage: http://orgmode.org ;; This file is part of GNU Emacs. ;; GNU Emacs 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 3 of the License, or ;; (at your option) any later version. ;; GNU Emacs 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. If not, see <http://www.gnu.org/licenses/>. ;;; Commentary: ;; Org-Babel support for evaluating lua source code. ;;; Code: (require 'ob) (eval-when-compile (require 'cl)) (declare-function org-remove-indentation "org" ) (declare-function lua-shell "ext:lua-mode" (&optional argprompt)) (declare-function lua-toggle-shells "ext:lua-mode" (arg)) (declare-function run-lua "ext:lua" (cmd &optional dedicated show)) (defvar org-babel-tangle-lang-exts) (add-to-list 'org-babel-tangle-lang-exts '("lua" . "lua")) (defvar org-babel-default-header-args:lua '()) (defcustom org-babel-lua-command "lua" "Name of the command for executing Lua code." :version "24.4" :package-version '(Org . "8.0") :group 'org-babel :type 'string) (defcustom org-babel-lua-mode (if (or (featurep 'xemacs) (featurep 'lua-mode)) 'lua-mode 'lua) "Preferred lua mode for use in running lua interactively. This will typically be either 'lua or 'lua-mode." :group 'org-babel :version "24.4" :package-version '(Org . "8.0") :type 'symbol) (defvar org-src-preserve-indentation) (defcustom org-babel-lua-hline-to "None" "Replace hlines in incoming tables with this when translating to lua." :group 'org-babel :version "24.4" :package-version '(Org . "8.0") :type 'string) (defcustom org-babel-lua-None-to 'hline "Replace 'None' in lua tables with this before returning." :group 'org-babel :version "24.4" :package-version '(Org . "8.0") :type 'symbol) (defun org-babel-execute:lua (body params) "Execute a block of Lua code with Babel. This function is called by `org-babel-execute-src-block'." (let* ((session (org-babel-lua-initiate-session (cdr (assoc :session params)))) (result-params (cdr (assoc :result-params params))) (result-type (cdr (assoc :result-type params))) (return-val (when (and (eq result-type 'value) (not session)) (cdr (assoc :return params)))) (preamble (cdr (assoc :preamble params))) (full-body (org-babel-expand-body:generic (concat body (if return-val (format "\nreturn %s" return-val) "")) params (org-babel-variable-assignments:lua params))) (result (org-babel-lua-evaluate session full-body result-type result-params preamble))) (org-babel-reassemble-table result (org-babel-pick-name (cdr (assoc :colname-names params)) (cdr (assoc :colnames params))) (org-babel-pick-name (cdr (assoc :rowname-names params)) (cdr (assoc :rownames params)))))) (defun org-babel-prep-session:lua (session params) "Prepare SESSION according to the header arguments in PARAMS. VARS contains resolved variable references" (let* ((session (org-babel-lua-initiate-session session)) (var-lines (org-babel-variable-assignments:lua params))) (org-babel-comint-in-buffer session (mapc (lambda (var) (end-of-line 1) (insert var) (comint-send-input) (org-babel-comint-wait-for-output session)) var-lines)) session)) (defun org-babel-load-session:lua (session body params) "Load BODY into SESSION." (save-window-excursion (let ((buffer (org-babel-prep-session:lua session params))) (with-current-buffer buffer (goto-char (process-mark (get-buffer-process (current-buffer)))) (insert (org-babel-chomp body))) buffer))) ;; helper functions (defun org-babel-variable-assignments:lua (params) "Return a list of Lua statements assigning the block's variables." (mapcar (lambda (pair) (format "%s=%s" (car pair) (org-babel-lua-var-to-lua (cdr pair)))) (mapcar #'cdr (org-babel-get-header params :var)))) (defun org-babel-lua-var-to-lua (var) "Convert an elisp value to a lua variable. Convert an elisp value, VAR, into a string of lua source code specifying a variable of the same value." (if (listp var) (if (and (= 1 (length var)) (not (listp (car var)))) (org-babel-lua-var-to-lua (car var)) (if (and (= 2 (length var)) (not (listp (car var)))) (concat (substring-no-properties (car var)) "=" (org-babel-lua-var-to-lua (cdr var))) (concat "{" (mapconcat #'org-babel-lua-var-to-lua var ", ") "}"))) (if (equal var 'hline) org-babel-lua-hline-to (format (if (and (stringp var) (string-match "[\n\r]" var)) "\"\"%S\"\"" "%S") (if (stringp var) (substring-no-properties var) var))))) (defun org-babel-lua-table-or-string (results) "Convert RESULTS into an appropriate elisp value. If the results look like a list or tuple, then convert them into an Emacs-lisp table, otherwise return the results as a string." (let ((res (org-babel-script-escape results))) (if (listp res) (mapcar (lambda (el) (if (equal el 'None) org-babel-lua-None-to el)) res) res))) (defvar org-babel-lua-buffers '((:default . "*Lua*"))) (defun org-babel-lua-session-buffer (session) "Return the buffer associated with SESSION." (cdr (assoc session org-babel-lua-buffers))) (defun org-babel-lua-with-earmuffs (session) (let ((name (if (stringp session) session (format "%s" session)))) (if (and (string= "*" (substring name 0 1)) (string= "*" (substring name (- (length name) 1)))) name (format "*%s*" name)))) (defun org-babel-lua-without-earmuffs (session) (let ((name (if (stringp session) session (format "%s" session)))) (if (and (string= "*" (substring name 0 1)) (string= "*" (substring name (- (length name) 1)))) (substring name 1 (- (length name) 1)) name))) (defvar lua-default-interpreter) (defvar lua-which-bufname) (defvar lua-shell-buffer-name) (defun org-babel-lua-initiate-session-by-key (&optional session) "Initiate a lua session. If there is not a current inferior-process-buffer in SESSION then create. Return the initialized session." (require org-babel-lua-mode) (save-window-excursion (let* ((session (if session (intern session) :default)) (lua-buffer (org-babel-lua-session-buffer session)) (cmd (if (member system-type '(cygwin windows-nt ms-dos)) (concat org-babel-lua-command " -i") org-babel-lua-command))) (cond ((and (eq 'lua org-babel-lua-mode) (fboundp 'run-lua)) ; lua.el (if (not (version< "24.1" emacs-version)) (run-lua cmd) (unless lua-buffer (setq lua-buffer (org-babel-lua-with-earmuffs session))) (let ((lua-shell-buffer-name (org-babel-lua-without-earmuffs lua-buffer))) (run-lua cmd)))) ((and (eq 'lua-mode org-babel-lua-mode) (fboundp 'lua-shell)) ; lua-mode.el ;; Make sure that lua-which-bufname is initialized, as otherwise ;; it will be overwritten the first time a Lua buffer is ;; created. (lua-toggle-shells lua-default-interpreter) ;; `lua-shell' creates a buffer whose name is the value of ;; `lua-which-bufname' with '*'s at the beginning and end (let* ((bufname (if (and lua-buffer (buffer-live-p lua-buffer)) (replace-regexp-in-string ;; zap surrounding * "^\\*\\([^*]+\\)\\*$" "\\1" lua-buffer) (concat "Lua-" (symbol-name session)))) (lua-which-bufname bufname)) (lua-shell) (setq lua-buffer (org-babel-lua-with-earmuffs bufname)))) (t (error "No function available for running an inferior Lua"))) (setq org-babel-lua-buffers (cons (cons session lua-buffer) (assq-delete-all session org-babel-lua-buffers))) session))) (defun org-babel-lua-initiate-session (&optional session params) "Create a session named SESSION according to PARAMS." (unless (string= session "none") (org-babel-lua-session-buffer (org-babel-lua-initiate-session-by-key session)))) (defvar org-babel-lua-eoe-indicator "'org_babel_lua_eoe'" "A string to indicate that evaluation has completed.") (defvar org-babel-lua-wrapper-method " function main() %s end fd=io.open(\"%s\", \"w\") fd:write( main() ) fd:close()") (defvar org-babel-lua-pp-wrapper-method " -- table to string function t2s(t, indent) if indent == nil then indent = \"\" end if type(t) == \"table\" then ts = \"\" for k,v in pairs(t) do if type(v) == \"table\" then ts = ts .. indent .. t2s(k,indent .. \" \") .. \" = \\n\" .. t2s(v, indent .. \" \") else ts = ts .. indent .. t2s(k,indent .. \" \") .. \" = \" .. t2s(v, indent .. \" \") .. \"\\n\" end end return ts else return tostring(t) end end function main() %s end fd=io.open(\"%s\", \"w\") fd:write(t2s(main())) fd:close()") (defun org-babel-lua-evaluate (session body &optional result-type result-params preamble) "Evaluate BODY as Lua code." (if session (org-babel-lua-evaluate-session session body result-type result-params) (org-babel-lua-evaluate-external-process body result-type result-params preamble))) (defun org-babel-lua-evaluate-external-process (body &optional result-type result-params preamble) "Evaluate BODY in external lua process. If RESULT-TYPE equals 'output then return standard output as a string. If RESULT-TYPE equals 'value then return the value of the last statement in BODY, as elisp." (let ((raw (case result-type (output (org-babel-eval org-babel-lua-command (concat (if preamble (concat preamble "\n")) body))) (value (let ((tmp-file (org-babel-temp-file "lua-"))) (org-babel-eval org-babel-lua-command (concat (if preamble (concat preamble "\n") "") (format (if (member "pp" result-params) org-babel-lua-pp-wrapper-method org-babel-lua-wrapper-method) (mapconcat (lambda (line) (format "\t%s" line)) (split-string (org-remove-indentation (org-babel-trim body)) "[\r\n]") "\n") (org-babel-process-file-name tmp-file 'noquote)))) (org-babel-eval-read-file tmp-file)))))) (org-babel-result-cond result-params raw (org-babel-lua-table-or-string (org-babel-trim raw))))) (defun org-babel-lua-evaluate-session (session body &optional result-type result-params) "Pass BODY to the Lua process in SESSION. If RESULT-TYPE equals 'output then return standard output as a string. If RESULT-TYPE equals 'value then return the value of the last statement in BODY, as elisp." (let* ((send-wait (lambda () (comint-send-input nil t) (sleep-for 0 5))) (dump-last-value (lambda (tmp-file pp) (mapc (lambda (statement) (insert statement) (funcall send-wait)) (if pp (list "import pprint" (format "open('%s', 'w').write(pprint.pformat(_))" (org-babel-process-file-name tmp-file 'noquote))) (list (format "open('%s', 'w').write(str(_))" (org-babel-process-file-name tmp-file 'noquote))))))) (input-body (lambda (body) (mapc (lambda (line) (insert line) (funcall send-wait)) (split-string body "[\r\n]")) (funcall send-wait))) (results (case result-type (output (mapconcat #'org-babel-trim (butlast (org-babel-comint-with-output (session org-babel-lua-eoe-indicator t body) (funcall input-body body) (funcall send-wait) (funcall send-wait) (insert org-babel-lua-eoe-indicator) (funcall send-wait)) 2) "\n")) (value (let ((tmp-file (org-babel-temp-file "lua-"))) (org-babel-comint-with-output (session org-babel-lua-eoe-indicator nil body) (let ((comint-process-echoes nil)) (funcall input-body body) (funcall dump-last-value tmp-file (member "pp" result-params)) (funcall send-wait) (funcall send-wait) (insert org-babel-lua-eoe-indicator) (funcall send-wait))) (org-babel-eval-read-file tmp-file)))))) (unless (string= (substring org-babel-lua-eoe-indicator 1 -1) results) (org-babel-result-cond result-params results (org-babel-lua-table-or-string results))))) (defun org-babel-lua-read-string (string) "Strip 's from around Lua string." (if (string-match "^'\\([^\000]+\\)'$" string) (match-string 1 string) string)) (provide 'ob-lua) ;;; ob-lua.el ends here
