mirror of
git://git.sv.gnu.org/emacs.git
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bc511a64f6
Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
403 lines
14 KiB
EmacsLisp
403 lines
14 KiB
EmacsLisp
;;; ob-lua.el --- Org Babel functions for Lua evaluation -*- lexical-binding: t; -*-
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;; Copyright (C) 2014, 2016-2017 Free Software Foundation, Inc.
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;; Authors: Dieter Schoen
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;; Requirements:
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;; for session support, lua-mode is needed.
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;; lua-mode is not part of GNU Emacs/orgmode, but can be obtained
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;; from marmalade or melpa.
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;; The source repository is here:
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;; https://github.com/immerrr/lua-mode
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;; However, sessions are not yet working.
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;; Org-Babel support for evaluating lua source code.
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;;; Code:
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(require 'ob)
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(require 'cl-lib)
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(declare-function org-remove-indentation "org" (code &optional n))
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(declare-function org-trim "org" (s &optional keep-lead))
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(declare-function lua-shell "ext:lua-mode" (&optional argprompt))
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(declare-function lua-toggle-shells "ext:lua-mode" (arg))
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(declare-function run-lua "ext:lua" (cmd &optional dedicated show))
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("lua" . "lua"))
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(defvar org-babel-default-header-args:lua '())
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(defcustom org-babel-lua-command "lua"
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"Name of the command for executing Lua code."
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:version "24.5"
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:package-version '(Org . "8.3")
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:group 'org-babel
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:type 'string)
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(defcustom org-babel-lua-mode 'lua-mode
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"Preferred lua mode for use in running lua interactively.
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This will typically be 'lua-mode."
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:group 'org-babel
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:version "24.5"
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:package-version '(Org . "8.3")
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:type 'symbol)
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(defcustom org-babel-lua-hline-to "None"
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"Replace hlines in incoming tables with this when translating to lua."
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:group 'org-babel
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:version "24.5"
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:package-version '(Org . "8.3")
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:type 'string)
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(defcustom org-babel-lua-None-to 'hline
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"Replace 'None' in lua tables with this before returning."
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:group 'org-babel
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:version "24.5"
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:package-version '(Org . "8.3")
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:type 'symbol)
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(defun org-babel-execute:lua (body params)
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"Execute a block of Lua code with Babel.
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This function is called by `org-babel-execute-src-block'."
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(let* ((session (org-babel-lua-initiate-session
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(cdr (assq :session params))))
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(result-params (cdr (assq :result-params params)))
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(result-type (cdr (assq :result-type params)))
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(return-val (when (and (eq result-type 'value) (not session))
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(cdr (assq :return params))))
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(preamble (cdr (assq :preamble params)))
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(full-body
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(org-babel-expand-body:generic
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(concat body (if return-val (format "\nreturn %s" return-val) ""))
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params (org-babel-variable-assignments:lua params)))
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(result (org-babel-lua-evaluate
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session full-body result-type result-params preamble)))
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(org-babel-reassemble-table
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result
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(org-babel-pick-name (cdr (assq :colname-names params))
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(cdr (assq :colnames params)))
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(org-babel-pick-name (cdr (assq :rowname-names params))
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(cdr (assq :rownames params))))))
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(defun org-babel-prep-session:lua (session params)
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"Prepare SESSION according to the header arguments in PARAMS.
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VARS contains resolved variable references"
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(let* ((session (org-babel-lua-initiate-session session))
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(var-lines
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(org-babel-variable-assignments:lua params)))
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(org-babel-comint-in-buffer session
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(mapc (lambda (var)
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(end-of-line 1) (insert var) (comint-send-input)
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(org-babel-comint-wait-for-output session)) var-lines))
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session))
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(defun org-babel-load-session:lua (session body params)
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"Load BODY into SESSION."
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(save-window-excursion
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(let ((buffer (org-babel-prep-session:lua session params)))
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(with-current-buffer buffer
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(goto-char (process-mark (get-buffer-process (current-buffer))))
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(insert (org-babel-chomp body)))
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buffer)))
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;; helper functions
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(defun org-babel-variable-assignments:lua (params)
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"Return a list of Lua statements assigning the block's variables."
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(mapcar
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(lambda (pair)
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(format "%s=%s"
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(car pair)
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(org-babel-lua-var-to-lua (cdr pair))))
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(org-babel--get-vars params)))
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(defun org-babel-lua-var-to-lua (var)
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"Convert an elisp value to a lua variable.
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Convert an elisp value, VAR, into a string of lua source code
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specifying a variable of the same value."
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(if (listp var)
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(if (and (= 1 (length var)) (not (listp (car var))))
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(org-babel-lua-var-to-lua (car var))
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(if (and
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(= 2 (length var))
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(not (listp (car var))))
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(concat
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(substring-no-properties (car var))
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"="
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(org-babel-lua-var-to-lua (cdr var)))
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(concat "{" (mapconcat #'org-babel-lua-var-to-lua var ", ") "}")))
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(if (eq var 'hline)
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org-babel-lua-hline-to
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(format
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(if (and (stringp var) (string-match "[\n\r]" var)) "\"\"%S\"\"" "%S")
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(if (stringp var) (substring-no-properties var) var)))))
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(defun org-babel-lua-table-or-string (results)
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"Convert RESULTS into an appropriate elisp value.
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If the results look like a list or tuple, then convert them into an
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Emacs-lisp table, otherwise return the results as a string."
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(let ((res (org-babel-script-escape results)))
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(if (listp res)
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(mapcar (lambda (el) (if (eq el 'None)
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org-babel-lua-None-to el))
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res)
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res)))
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(defvar org-babel-lua-buffers '((:default . "*Lua*")))
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(defun org-babel-lua-session-buffer (session)
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"Return the buffer associated with SESSION."
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(cdr (assoc session org-babel-lua-buffers)))
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(defun org-babel-lua-with-earmuffs (session)
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(let ((name (if (stringp session) session (format "%s" session))))
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(if (and (string= "*" (substring name 0 1))
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(string= "*" (substring name (- (length name) 1))))
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name
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(format "*%s*" name))))
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(defun org-babel-lua-without-earmuffs (session)
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(let ((name (if (stringp session) session (format "%s" session))))
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(if (and (string= "*" (substring name 0 1))
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(string= "*" (substring name (- (length name) 1))))
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(substring name 1 (- (length name) 1))
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name)))
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(defvar lua-default-interpreter)
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(defvar lua-which-bufname)
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(defvar lua-shell-buffer-name)
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(defun org-babel-lua-initiate-session-by-key (&optional session)
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"Initiate a lua session.
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If there is not a current inferior-process-buffer in SESSION
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then create. Return the initialized session."
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;; (require org-babel-lua-mode)
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(save-window-excursion
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(let* ((session (if session (intern session) :default))
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(lua-buffer (org-babel-lua-session-buffer session))
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;; (cmd (if (member system-type '(cygwin windows-nt ms-dos))
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;; (concat org-babel-lua-command " -i")
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;; org-babel-lua-command))
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)
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(cond
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((and (eq 'lua-mode org-babel-lua-mode)
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(fboundp 'lua-start-process)) ; lua-mode.el
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;; Make sure that lua-which-bufname is initialized, as otherwise
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;; it will be overwritten the first time a Lua buffer is
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;; created.
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;;(lua-toggle-shells lua-default-interpreter)
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;; `lua-shell' creates a buffer whose name is the value of
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;; `lua-which-bufname' with '*'s at the beginning and end
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(let* ((bufname (if (and lua-buffer (buffer-live-p lua-buffer))
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(replace-regexp-in-string ;; zap surrounding *
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"^\\*\\([^*]+\\)\\*$" "\\1" (buffer-name lua-buffer))
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(concat "Lua-" (symbol-name session))))
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(lua-which-bufname bufname))
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(lua-start-process)
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(setq lua-buffer (org-babel-lua-with-earmuffs bufname))))
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(t
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(error "No function available for running an inferior Lua")))
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(setq org-babel-lua-buffers
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(cons (cons session lua-buffer)
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(assq-delete-all session org-babel-lua-buffers)))
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session)))
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(defun org-babel-lua-initiate-session (&optional session _params)
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"Create a session named SESSION according to PARAMS."
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(unless (string= session "none")
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(error "Sessions currently not supported, work in progress")
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(org-babel-lua-session-buffer
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(org-babel-lua-initiate-session-by-key session))))
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(defvar org-babel-lua-eoe-indicator "--eoe"
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"A string to indicate that evaluation has completed.")
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(defvar org-babel-lua-wrapper-method
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"
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function main()
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%s
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end
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fd=io.open(\"%s\", \"w\")
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fd:write( main() )
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fd:close()")
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(defvar org-babel-lua-pp-wrapper-method
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"
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-- table to string
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function t2s(t, indent)
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if indent == nil then
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indent = \"\"
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end
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if type(t) == \"table\" then
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ts = \"\"
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for k,v in pairs(t) do
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if type(v) == \"table\" then
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ts = ts .. indent .. t2s(k,indent .. \" \") .. \" = \\n\" ..
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t2s(v, indent .. \" \")
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else
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ts = ts .. indent .. t2s(k,indent .. \" \") .. \" = \" ..
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t2s(v, indent .. \" \") .. \"\\n\"
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end
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end
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return ts
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else
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return tostring(t)
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end
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end
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function main()
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%s
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end
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fd=io.open(\"%s\", \"w\")
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fd:write(t2s(main()))
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fd:close()")
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(defun org-babel-lua-evaluate
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(session body &optional result-type result-params preamble)
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"Evaluate BODY as Lua code."
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(if session
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(org-babel-lua-evaluate-session
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session body result-type result-params)
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(org-babel-lua-evaluate-external-process
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body result-type result-params preamble)))
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(defun org-babel-lua-evaluate-external-process
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(body &optional result-type result-params preamble)
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"Evaluate BODY in external lua process.
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If RESULT-TYPE equals 'output then return standard output as a
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string. If RESULT-TYPE equals 'value then return the value of the
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last statement in BODY, as elisp."
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(let ((raw
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(pcase result-type
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(`output (org-babel-eval org-babel-lua-command
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(concat (if preamble (concat preamble "\n"))
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body)))
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(`value (let ((tmp-file (org-babel-temp-file "lua-")))
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(org-babel-eval
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org-babel-lua-command
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(concat
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(if preamble (concat preamble "\n") "")
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(format
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(if (member "pp" result-params)
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org-babel-lua-pp-wrapper-method
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org-babel-lua-wrapper-method)
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(mapconcat
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(lambda (line) (format "\t%s" line))
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(split-string
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(org-remove-indentation
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(org-trim body))
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"[\r\n]") "\n")
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(org-babel-process-file-name tmp-file 'noquote))))
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(org-babel-eval-read-file tmp-file))))))
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(org-babel-result-cond result-params
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raw
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(org-babel-lua-table-or-string (org-trim raw)))))
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(defun org-babel-lua-evaluate-session
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(session body &optional result-type result-params)
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"Pass BODY to the Lua process in SESSION.
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If RESULT-TYPE equals 'output then return standard output as a
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string. If RESULT-TYPE equals 'value then return the value of the
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last statement in BODY, as elisp."
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(let* ((send-wait (lambda () (comint-send-input nil t) (sleep-for 0 5)))
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(dump-last-value
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(lambda
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(tmp-file pp)
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(mapc
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(lambda (statement) (insert statement) (funcall send-wait))
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(if pp
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(list
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"-- table to string
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function t2s(t, indent)
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if indent == nil then
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indent = \"\"
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end
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if type(t) == \"table\" then
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ts = \"\"
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for k,v in pairs(t) do
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if type(v) == \"table\" then
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ts = ts .. indent .. t2s(k,indent .. \" \") .. \" = \\n\" ..
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t2s(v, indent .. \" \")
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else
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ts = ts .. indent .. t2s(k,indent .. \" \") .. \" = \" ..
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t2s(v, indent .. \" \") .. \"\\n\"
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end
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end
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return ts
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else
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return tostring(t)
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end
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end
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"
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(concat "fd:write(_))
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fd:close()"
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(org-babel-process-file-name tmp-file 'noquote)))
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(list (format "fd=io.open(\"%s\", \"w\")
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fd:write( _ )
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fd:close()"
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(org-babel-process-file-name tmp-file
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'noquote)))))))
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(input-body (lambda (body)
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(mapc (lambda (line) (insert line) (funcall send-wait))
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(split-string body "[\r\n]"))
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(funcall send-wait)))
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(results
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(pcase result-type
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(`output
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(mapconcat
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#'org-trim
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(butlast
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(org-babel-comint-with-output
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(session org-babel-lua-eoe-indicator t body)
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(funcall input-body body)
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(funcall send-wait) (funcall send-wait)
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(insert org-babel-lua-eoe-indicator)
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(funcall send-wait))
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2) "\n"))
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(`value
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(let ((tmp-file (org-babel-temp-file "lua-")))
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(org-babel-comint-with-output
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(session org-babel-lua-eoe-indicator nil body)
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(let ((comint-process-echoes nil))
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(funcall input-body body)
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(funcall dump-last-value tmp-file
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(member "pp" result-params))
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(funcall send-wait) (funcall send-wait)
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(insert org-babel-lua-eoe-indicator)
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(funcall send-wait)))
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(org-babel-eval-read-file tmp-file))))))
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(unless (string= (substring org-babel-lua-eoe-indicator 1 -1) results)
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(org-babel-result-cond result-params
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results
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(org-babel-lua-table-or-string results)))))
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(defun org-babel-lua-read-string (string)
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"Strip 's from around Lua string."
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(org-unbracket-string "'" "'" string))
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(provide 'ob-lua)
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;;; ob-lua.el ends here
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