forked from mirrors/org-mode
58f1dbccf8
Also remove blank lines before the ";;; org*el ends here" declarations. Having a "Version" header forced us to update every file when releasing a new version of Org; it also forced us to update every file when merging Org with Emacs trunk, thus cluttering the diffs between the previously merged version and the new one with useless information. Glenn Morris suggested this in emacs-devel: http://lists.gnu.org/archive/html/emacs-devel/2011-08/msg00322.html
317 lines
12 KiB
EmacsLisp
317 lines
12 KiB
EmacsLisp
;;; ob-R.el --- org-babel functions for R code evaluation
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;; Copyright (C) 2009-2011 Free Software Foundation, Inc.
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;; Author: Eric Schulte, Dan Davison
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;; Keywords: literate programming, reproducible research, R, statistics
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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 <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating R code
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;;; Code:
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(require 'ob)
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(require 'ob-ref)
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(require 'ob-comint)
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(require 'ob-eval)
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(eval-when-compile (require 'cl))
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(declare-function orgtbl-to-tsv "org-table" (table params))
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(declare-function R "ext:essd-r" (&optional start-args))
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(declare-function inferior-ess-send-input "ext:ess-inf" ())
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(declare-function ess-make-buffer-current "ext:ess-inf" ())
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(declare-function ess-eval-buffer "ext:ess-inf" (vis))
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(declare-function org-number-sequence "org-compat" (from &optional to inc))
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(defconst org-babel-header-arg-names:R
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'(width height bg units pointsize antialias quality compression
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res type family title fonts version paper encoding
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pagecentre colormodel useDingbats horizontal)
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"R-specific header arguments.")
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(defvar org-babel-default-header-args:R '())
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(defvar org-babel-R-command "R --slave --no-save"
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"Name of command to use for executing R code.")
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(defvar ess-local-process-name)
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(defun org-babel-edit-prep:R (info)
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(let ((session (cdr (assoc :session (nth 2 info)))))
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(when (and session (string-match "^\\*\\(.+?\\)\\*$" session))
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(save-match-data (org-babel-R-initiate-session session nil))
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(setq ess-local-process-name (match-string 1 session)))))
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(defun org-babel-expand-body:R (body params &optional graphics-file)
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"Expand BODY according to PARAMS, return the expanded body."
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(let ((graphics-file
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(or graphics-file (org-babel-R-graphical-output-file params))))
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(mapconcat
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#'identity
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((lambda (inside)
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(if graphics-file
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(append
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(list (org-babel-R-construct-graphics-device-call
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graphics-file params))
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inside
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(list "dev.off()"))
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inside))
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(append (org-babel-variable-assignments:R params)
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(list body))) "\n")))
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(defun org-babel-execute:R (body params)
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"Execute a block of R code.
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This function is called by `org-babel-execute-src-block'."
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(save-excursion
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(let* ((result-type (cdr (assoc :result-type params)))
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(session (org-babel-R-initiate-session
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(cdr (assoc :session params)) params))
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(colnames-p (cdr (assoc :colnames params)))
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(rownames-p (cdr (assoc :rownames params)))
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(graphics-file (org-babel-R-graphical-output-file params))
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(full-body (org-babel-expand-body:R body params graphics-file))
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(result
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(org-babel-R-evaluate
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session full-body result-type
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(or (equal "yes" colnames-p)
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(org-babel-pick-name
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(cdr (assoc :colname-names params)) colnames-p))
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(or (equal "yes" rownames-p)
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(org-babel-pick-name
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(cdr (assoc :rowname-names params)) rownames-p)))))
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(if graphics-file nil result))))
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(defun org-babel-prep-session:R (session params)
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"Prepare SESSION according to the header arguments specified in PARAMS."
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(let* ((session (org-babel-R-initiate-session session params))
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(var-lines (org-babel-variable-assignments:R 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 nil t)
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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:R (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:R 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:R (params)
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"Return list of R statements assigning the block's variables"
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(let ((vars (mapcar #'cdr (org-babel-get-header params :var))))
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(mapcar
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(lambda (pair)
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(org-babel-R-assign-elisp
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(car pair) (cdr pair)
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(equal "yes" (cdr (assoc :colnames params)))
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(equal "yes" (cdr (assoc :rownames params)))))
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(mapcar
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(lambda (i)
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(cons (car (nth i vars))
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(org-babel-reassemble-table
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(cdr (nth i vars))
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(cdr (nth i (cdr (assoc :colname-names params))))
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(cdr (nth i (cdr (assoc :rowname-names params)))))))
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(org-number-sequence 0 (1- (length vars)))))))
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(defun org-babel-R-quote-tsv-field (s)
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"Quote field S for export to R."
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(if (stringp s)
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(concat "\"" (mapconcat 'identity (split-string s "\"") "\"\"") "\"")
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(format "%S" s)))
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(defun org-babel-R-assign-elisp (name value colnames-p rownames-p)
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"Construct R code assigning the elisp VALUE to a variable named NAME."
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(if (listp value)
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(let ((transition-file (org-babel-temp-file "R-import-")))
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;; ensure VALUE has an orgtbl structure (depth of at least 2)
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(unless (listp (car value)) (setq value (list value)))
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(with-temp-file transition-file
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(insert (orgtbl-to-tsv value '(:fmt org-babel-R-quote-tsv-field)))
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(insert "\n"))
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(format "%s <- read.table(\"%s\", header=%s, row.names=%s, sep=\"\\t\", as.is=TRUE)"
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name (org-babel-process-file-name transition-file 'noquote)
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(if (or (eq (nth 1 value) 'hline) colnames-p) "TRUE" "FALSE")
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(if rownames-p "1" "NULL")))
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(format "%s <- %s" name (org-babel-R-quote-tsv-field value))))
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(defvar ess-ask-for-ess-directory nil)
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(defun org-babel-R-initiate-session (session params)
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"If there is not a current R process then create one."
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(unless (string= session "none")
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(let ((session (or session "*R*"))
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(ess-ask-for-ess-directory
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(and ess-ask-for-ess-directory (not (cdr (assoc :dir params))))))
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(if (org-babel-comint-buffer-livep session)
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session
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(save-window-excursion
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(require 'ess) (R)
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(rename-buffer
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(if (bufferp session)
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(buffer-name session)
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(if (stringp session)
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session
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(buffer-name))))
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(current-buffer))))))
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(defvar ess-local-process-name nil)
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(defun org-babel-R-associate-session (session)
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"Associate R code buffer with an R session.
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Make SESSION be the inferior ESS process associated with the
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current code buffer."
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(setq ess-local-process-name
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(process-name (get-buffer-process session)))
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(ess-make-buffer-current))
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(defun org-babel-R-graphical-output-file (params)
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"Name of file to which R should send graphical output."
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(and (member "graphics" (cdr (assq :result-params params)))
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(cdr (assq :file params))))
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(defun org-babel-R-construct-graphics-device-call (out-file params)
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"Construct the call to the graphics device."
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(let ((devices
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'((:bmp . "bmp")
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(:jpg . "jpeg")
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(:jpeg . "jpeg")
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(:tiff . "tiff")
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(:png . "png")
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(:svg . "svg")
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(:pdf . "pdf")
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(:ps . "postscript")
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(:postscript . "postscript")))
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(allowed-args '(:width :height :bg :units :pointsize
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:antialias :quality :compression :res
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:type :family :title :fonts :version
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:paper :encoding :pagecentre :colormodel
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:useDingbats :horizontal))
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(device (and (string-match ".+\\.\\([^.]+\\)" out-file)
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(match-string 1 out-file)))
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(extra-args (cdr (assq :R-dev-args params))) filearg args)
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(setq device (or (and device (cdr (assq (intern (concat ":" device))
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devices))) "png"))
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(setq filearg
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(if (member device '("pdf" "postscript" "svg")) "file" "filename"))
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(setq args (mapconcat
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(lambda (pair)
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(if (member (car pair) allowed-args)
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(format ",%s=%s"
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(substring (symbol-name (car pair)) 1)
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(cdr pair)) ""))
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params ""))
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(format "%s(%s=\"%s\"%s%s%s)"
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device filearg out-file args
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(if extra-args "," "") (or extra-args ""))))
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(defvar org-babel-R-eoe-indicator "'org_babel_R_eoe'")
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(defvar org-babel-R-eoe-output "[1] \"org_babel_R_eoe\"")
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(defvar org-babel-R-write-object-command "{function(object,transfer.file){object;invisible(if(inherits(try({tfile<-tempfile();write.table(object,file=tfile,sep=\"\\t\",na=\"nil\",row.names=%s,col.names=%s,quote=FALSE);file.rename(tfile,transfer.file)},silent=TRUE),\"try-error\")){if(!file.exists(transfer.file))file.create(transfer.file)})}}(object=%s,transfer.file=\"%s\")")
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(defun org-babel-R-evaluate
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(session body result-type column-names-p row-names-p)
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"Evaluate R code in BODY."
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(if session
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(org-babel-R-evaluate-session
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session body result-type column-names-p row-names-p)
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(org-babel-R-evaluate-external-process
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body result-type column-names-p row-names-p)))
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(defun org-babel-R-evaluate-external-process
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(body result-type column-names-p row-names-p)
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"Evaluate BODY in external R 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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(case result-type
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(value
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(let ((tmp-file (org-babel-temp-file "R-")))
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(org-babel-eval org-babel-R-command
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(format org-babel-R-write-object-command
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(if row-names-p "TRUE" "FALSE")
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(if column-names-p
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(if row-names-p "NA" "TRUE")
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"FALSE")
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(format "{function ()\n{\n%s\n}}()" body)
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(org-babel-process-file-name tmp-file 'noquote)))
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(org-babel-R-process-value-result
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(org-babel-import-elisp-from-file tmp-file '(16)) column-names-p)))
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(output (org-babel-eval org-babel-R-command body))))
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(defun org-babel-R-evaluate-session
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(session body result-type column-names-p row-names-p)
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"Evaluate BODY 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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(case result-type
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(value
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(with-temp-buffer
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(insert (org-babel-chomp body))
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(let ((ess-local-process-name
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(process-name (get-buffer-process session))))
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(ess-eval-buffer nil)))
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(let ((tmp-file (org-babel-temp-file "R-")))
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(org-babel-comint-eval-invisibly-and-wait-for-file
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session tmp-file
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(format org-babel-R-write-object-command
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(if row-names-p "TRUE" "FALSE")
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(if column-names-p
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(if row-names-p "NA" "TRUE")
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"FALSE")
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".Last.value" (org-babel-process-file-name tmp-file 'noquote)))
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(org-babel-R-process-value-result
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(org-babel-import-elisp-from-file tmp-file '(16)) column-names-p)))
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(output
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(mapconcat
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#'org-babel-chomp
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(butlast
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(delq nil
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(mapcar
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(lambda (line) (when (> (length line) 0) line))
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(mapcar
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(lambda (line) ;; cleanup extra prompts left in output
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(if (string-match
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"^\\([ ]*[>+][ ]?\\)+\\([[0-9]+\\|[ ]\\)" line)
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(substring line (match-end 1))
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line))
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(org-babel-comint-with-output (session org-babel-R-eoe-output)
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(insert (mapconcat #'org-babel-chomp
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(list body org-babel-R-eoe-indicator)
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"\n"))
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(inferior-ess-send-input)))))) "\n"))))
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(defun org-babel-R-process-value-result (result column-names-p)
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"R-specific processing of return value.
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Insert hline if column names in output have been requested."
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(if column-names-p
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(cons (car result) (cons 'hline (cdr result)))
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result))
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(provide 'ob-R)
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;;; ob-R.el ends here
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