;;; ob-perl.el --- org-babel functions for perl evaluation
-;; Copyright (C) 2009-2011 Free Software Foundation
+;; Copyright (C) 2009-2016 Free Software Foundation, Inc.
-;; Author: Dan Davison
-;; Eric Schulte
+;; Authors: Dan Davison
+;; Eric Schulte
;; Keywords: literate programming, reproducible research
;; Homepage: http://orgmode.org
-;; Version: 7.7
;; This file is part of GNU Emacs.
;;; Code:
(require 'ob)
-(require 'ob-eval)
(eval-when-compile (require 'cl))
(defvar org-babel-tangle-lang-exts)
(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)))
+ (session (org-babel-perl-initiate-session session)))
(org-babel-reassemble-table
- (org-babel-perl-evaluate session full-body result-type)
+ (org-babel-perl-evaluate session full-body result-type result-params)
(org-babel-pick-name
(cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
(org-babel-pick-name
(defun org-babel-prep-session:perl (session params)
"Prepare SESSION according to the header arguments in PARAMS."
- (error "Sessions are not supported for Perl."))
+ (error "Sessions are not supported for Perl"))
(defun org-babel-variable-assignments:perl (params)
- "Return list of perl statements assigning the block's variables"
+ "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))))
+ (org-babel-perl--var-to-perl (cdr pair) (car pair)))
(mapcar #'cdr (org-babel-get-header params :var))))
;; helper functions
-(defun org-babel-perl-var-to-perl (var)
+(defvar org-babel-perl-var-wrap "q(%s)"
+ "Wrapper for variables inserted into Perl code.")
+
+(defvar org-babel-perl--lvl)
+(defun org-babel-perl--var-to-perl (var &optional varn)
"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)))
+ (if varn
+ (let ((org-babel-perl--lvl 0) (lvar (listp var)) prefix)
+ (concat "my $" (symbol-name varn) "=" (when lvar "\n")
+ (org-babel-perl--var-to-perl var)
+ ";\n"))
+ (let ((prefix (make-string (* 2 org-babel-perl--lvl) ?\ )))
+ (concat prefix
+ (if (listp var)
+ (let ((org-babel-perl--lvl (1+ org-babel-perl--lvl)))
+ (concat "[\n"
+ (mapconcat #'org-babel-perl--var-to-perl var "")
+ prefix "]"))
+ (format "q(%s)" var))
+ (unless (zerop org-babel-perl--lvl) ",\n")))))
(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\"")
+ "Return nil because sessions are not supported by perl."
+ nil)
+
+(defvar org-babel-perl-wrapper-method "{
+ my $babel_sub = sub {
+ %s
+ };
+ open my $BOH, qq(>%s) or die qq(Perl: Could not open output file.$/);
+ my $rv = &$babel_sub();
+ my $rt = ref $rv;
+ select $BOH;
+ if (qq(ARRAY) eq $rt) {
+ local $\\=$/;
+ local $,=qq(\t);
+ foreach my $rv ( @$rv ) {
+ my $rt = ref $rv;
+ if (qq(ARRAY) eq $rt) {
+ print @$rv;
+ } else {
+ print $rv;
+ }
+ }
+ } else {
+ print $rv;
+ }
+}")
+
+(defvar org-babel-perl-preface nil)
(defvar org-babel-perl-pp-wrapper-method
nil)
-(defun org-babel-perl-evaluate (session body &optional result-type)
+(defun org-babel-perl-evaluate (session ibody &optional result-type result-params)
"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)))))
+ (when session (error "Sessions are not supported for Perl"))
+ (let* ((body (concat org-babel-perl-preface ibody))
+ (tmp-file (org-babel-temp-file "perl-"))
+ (tmp-babel-file (org-babel-process-file-name
+ tmp-file 'noquote)))
+ (let ((results
+ (case result-type
+ (output
+ (with-temp-file tmp-file
+ (insert
+ (org-babel-eval org-babel-perl-command body))
+ (buffer-string)))
+ (value
+ (org-babel-eval org-babel-perl-command
+ (format org-babel-perl-wrapper-method
+ body tmp-babel-file))))))
+ (when results
+ (org-babel-result-cond result-params
+ (org-babel-eval-read-file tmp-file)
+ (org-babel-import-elisp-from-file tmp-file '(16)))))))
(provide 'ob-perl)