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authorSébastien Delafond <sdelafond@gmail.com>2014-07-13 13:35:01 +0200
committerSébastien Delafond <sdelafond@gmail.com>2014-07-13 13:35:01 +0200
commit7697fa4daf3ec84f85711a84035d8f0224afd4e3 (patch)
tree24d0f1d2a9751ca8c063409fd2ab71478b296efb /lisp/ob-perl.el
Imported Upstream version 7.9.2
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+;;; ob-perl.el --- org-babel functions for perl evaluation
+
+;; Copyright (C) 2009-2012 Free Software Foundation, Inc.
+
+;; Authors: Dan Davison
+;; Eric Schulte
+;; 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 perl source code.
+
+;;; Code:
+(require 'ob)
+(require 'ob-eval)
+(eval-when-compile (require 'cl))
+
+(defvar org-babel-tangle-lang-exts)
+(add-to-list 'org-babel-tangle-lang-exts '("perl" . "pl"))
+
+(defvar org-babel-default-header-args:perl '())
+
+(defvar org-babel-perl-command "perl"
+ "Name of command to use for executing perl code.")
+
+(defun org-babel-execute:perl (body params)
+ "Execute a block of Perl code with Babel.
+This function is called by `org-babel-execute-src-block'."
+ (let* ((session (cdr (assoc :session params)))
+ (result-params (cdr (assoc :result-params params)))
+ (result-type (cdr (assoc :result-type params)))
+ (full-body (org-babel-expand-body:generic
+ body params (org-babel-variable-assignments:perl params)))
+ (session (org-babel-perl-initiate-session session)))
+ (org-babel-reassemble-table
+ (org-babel-perl-evaluate session full-body result-type)
+ (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:perl (session params)
+ "Prepare SESSION according to the header arguments in PARAMS."
+ (error "Sessions are not supported for Perl"))
+
+(defun org-babel-variable-assignments:perl (params)
+ "Return list of perl statements assigning the block's variables."
+ (mapcar
+ (lambda (pair)
+ (format "$%s=%s;"
+ (car pair)
+ (org-babel-perl-var-to-perl (cdr pair))))
+ (mapcar #'cdr (org-babel-get-header params :var))))
+
+;; helper functions
+
+(defun org-babel-perl-var-to-perl (var)
+ "Convert an elisp value to a perl variable.
+The elisp value, VAR, is converted to a string of perl source code
+specifying a var of the same value."
+ (if (listp var)
+ (concat "[" (mapconcat #'org-babel-perl-var-to-perl var ", ") "]")
+ (format "%S" var)))
+
+(defvar org-babel-perl-buffers '(:default . nil))
+
+(defun org-babel-perl-initiate-session (&optional session params)
+ "Return nil because sessions are not supported by perl."
+ nil)
+
+(defvar org-babel-perl-wrapper-method
+ "
+sub main {
+%s
+}
+@r = main;
+open(o, \">%s\");
+print o join(\"\\n\", @r), \"\\n\"")
+
+(defvar org-babel-perl-pp-wrapper-method
+ nil)
+
+(defun org-babel-perl-evaluate (session body &optional result-type)
+ "Pass BODY to the Perl process in SESSION.
+If RESULT-TYPE equals 'output then return a list of the outputs
+of the statements in BODY, if RESULT-TYPE equals 'value then
+return the value of the last statement in BODY, as elisp."
+ (when session (error "Sessions are not supported for Perl"))
+ (case result-type
+ (output (org-babel-eval org-babel-perl-command body))
+ (value (let ((tmp-file (org-babel-temp-file "perl-")))
+ (org-babel-eval
+ org-babel-perl-command
+ (format org-babel-perl-wrapper-method body
+ (org-babel-process-file-name tmp-file 'noquote)))
+ (org-babel-eval-read-file tmp-file)))))
+
+(provide 'ob-perl)
+
+
+
+;;; ob-perl.el ends here