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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
198 lines
7.2 KiB
EmacsLisp
198 lines
7.2 KiB
EmacsLisp
;;; ob-sh.el --- org-babel functions for shell evaluation
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;; Copyright (C) 2009-2011 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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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 <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating shell source 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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(require 'shell)
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(eval-when-compile (require 'cl))
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(declare-function org-babel-comint-in-buffer "ob-comint" (buffer &rest body))
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(declare-function org-babel-comint-wait-for-output "ob-comint" (buffer))
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(declare-function org-babel-comint-buffer-livep "ob-comint" (buffer))
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(declare-function org-babel-comint-with-output "ob-comint" (meta &rest body))
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(declare-function orgtbl-to-generic "org-table" (table params))
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(defvar org-babel-default-header-args:sh '())
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(defvar org-babel-sh-command "sh"
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"Command used to invoke a shell.
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This will be passed to `shell-command-on-region'")
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(defcustom org-babel-sh-var-quote-fmt
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"$(cat <<'BABEL_TABLE'\n%s\nBABEL_TABLE\n)"
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"Format string used to escape variables when passed to shell scripts."
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:group 'org-babel
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:type 'string)
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(defun org-babel-execute:sh (body params)
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"Execute a block of Shell commands with Babel.
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This function is called by `org-babel-execute-src-block'."
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(let* ((session (org-babel-sh-initiate-session
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(cdr (assoc :session params))))
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(result-params (cdr (assoc :result-params params)))
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(stdin ((lambda (stdin) (when stdin (org-babel-sh-var-to-string
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(org-babel-ref-resolve stdin))))
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(cdr (assoc :stdin params))))
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(full-body (org-babel-expand-body:generic
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body params (org-babel-variable-assignments:sh params))))
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(org-babel-reassemble-table
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(org-babel-sh-evaluate session full-body result-params stdin)
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(org-babel-pick-name
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(cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
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(org-babel-pick-name
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(cdr (assoc :rowname-names params)) (cdr (assoc :rownames params))))))
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(defun org-babel-prep-session:sh (session params)
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"Prepare SESSION according to the header arguments specified in PARAMS."
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(let* ((session (org-babel-sh-initiate-session session))
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(var-lines (org-babel-variable-assignments:sh params)))
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(org-babel-comint-in-buffer session
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(mapc (lambda (var)
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(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:sh (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:sh 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:sh (params)
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"Return list of shell statements assigning the block's variables"
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(let ((sep (cdr (assoc :separator params))))
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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-sh-var-to-sh (cdr pair) sep)))
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(mapcar #'cdr (org-babel-get-header params :var)))))
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(defun org-babel-sh-var-to-sh (var &optional sep)
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"Convert an elisp value to a shell variable.
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Convert an elisp var into a string of shell commands specifying a
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var of the same value."
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(format org-babel-sh-var-quote-fmt (org-babel-sh-var-to-string var sep)))
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(defun org-babel-sh-var-to-string (var &optional sep)
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"Convert an elisp value to a string."
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(flet ((echo-var (v) (if (stringp v) v (format "%S" v))))
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(cond
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((and (listp var) (listp (car var)))
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(orgtbl-to-generic var (list :sep (or sep "\t") :fmt #'echo-var)))
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((listp var)
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(mapconcat #'echo-var var "\n"))
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(t (echo-var var)))))
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(defun org-babel-sh-table-or-results (results)
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"Convert RESULTS to an appropriate elisp value.
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If the results look like a table, then convert them into an
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Emacs-lisp table, otherwise return the results as a string."
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(org-babel-script-escape results))
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(defun org-babel-sh-initiate-session (&optional session params)
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"Initiate a session named SESSION according to PARAMS."
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(when (and session (not (string= session "none")))
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(save-window-excursion
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(or (org-babel-comint-buffer-livep session)
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(progn (shell session) (get-buffer (current-buffer)))))))
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(defvar org-babel-sh-eoe-indicator "echo 'org_babel_sh_eoe'"
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"String to indicate that evaluation has completed.")
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(defvar org-babel-sh-eoe-output "org_babel_sh_eoe"
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"String to indicate that evaluation has completed.")
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(defun org-babel-sh-evaluate (session body &optional result-params stdin)
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"Pass BODY to the Shell process in BUFFER.
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If RESULT-TYPE equals 'output then return a list of the outputs
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of the statements in BODY, if RESULT-TYPE equals 'value then
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return the value of the last statement in BODY."
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((lambda (results)
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(when results
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(if (or (member "scalar" result-params)
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(member "verbatim" result-params)
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(member "output" result-params))
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results
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(let ((tmp-file (org-babel-temp-file "sh-")))
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(with-temp-file tmp-file (insert results))
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(org-babel-import-elisp-from-file tmp-file)))))
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(cond
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(stdin ; external shell script w/STDIN
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(let ((script-file (org-babel-temp-file "sh-script-"))
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(stdin-file (org-babel-temp-file "sh-stdin-")))
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(with-temp-file script-file (insert body))
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(with-temp-file stdin-file (insert stdin))
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(with-temp-buffer
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(call-process-shell-command
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(format "%s %s" org-babel-sh-command script-file)
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stdin-file
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(current-buffer))
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(buffer-string))))
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(session ; session evaluation
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(mapconcat
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#'org-babel-sh-strip-weird-long-prompt
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(mapcar
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#'org-babel-trim
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(butlast
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(org-babel-comint-with-output
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(session org-babel-sh-eoe-output t body)
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(mapc
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(lambda (line)
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(insert line)
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(comint-send-input nil t)
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(while (save-excursion
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(goto-char comint-last-input-end)
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(not (re-search-forward
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comint-prompt-regexp nil t)))
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(accept-process-output (get-buffer-process (current-buffer)))))
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(append
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(split-string (org-babel-trim body) "\n")
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(list org-babel-sh-eoe-indicator))))
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2)) "\n"))
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('otherwise ; external shell script
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(org-babel-eval org-babel-sh-command (org-babel-trim body))))))
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(defun org-babel-sh-strip-weird-long-prompt (string)
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"Remove prompt cruft from a string of shell output."
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(while (string-match "^% +[\r\n$]+ *" string)
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(setq string (substring string (match-end 0))))
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string)
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(provide 'ob-sh)
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;;; ob-sh.el ends here
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