2009-05-28 02:00:13 +00:00
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;;; org-babel-comint.el --- org-babel functions for interaction with comint buffers
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;; Copyright (C) 2009 Eric Schulte
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research, comint
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;; Homepage: http://orgmode.org
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;; Version: 0.01
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;;; License:
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;; This program 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, or (at your option)
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;; any later version.
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;;
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;; This program 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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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; This file should provide support for passing commands and results
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;; to and from `comint-mode' buffers.
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;;; Code:
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(require 'org-babel)
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(defun org-babel-comint-initiate-buffer (buffer ignite)
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2009-05-30 00:45:40 +00:00
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"If BUFFER does not exist and currently have a process call
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IGNITE from within BUFFER."
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(unless (and (buffer-live-p buffer) (get-buffer buffer) (get-buffer-process buffer))
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2009-05-28 02:00:13 +00:00
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(save-excursion
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2009-05-30 00:45:40 +00:00
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(get-buffer-create buffer)
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(funcall ignite)
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2009-05-28 02:00:13 +00:00
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(setf buffer (current-buffer))
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(org-babel-comint-wait-for-output)
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(org-babel-comint-input-command ""))))
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(defun org-babel-comint-command-to-string (buffer command)
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2009-05-30 00:45:40 +00:00
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"Send COMMAND to BUFFER's process, and return the results as a string."
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2009-05-28 02:00:13 +00:00
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(org-babel-comint-input-command buffer command)
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(org-babel-comint-last-output buffer))
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(defun org-babel-comint-input-command (buffer command)
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"Pass COMMAND to the process running in BUFFER."
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(save-excursion
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(save-match-data
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(set-buffer buffer)
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(goto-char (process-mark (get-buffer-process (current-buffer))))
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(insert command)
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(comint-send-input)
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(org-babel-comint-wait-for-output))))
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(defun org-babel-comint-wait-for-output (buffer)
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"Wait until output arrives"
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(save-excursion
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(save-match-data
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(set-buffer buffer)
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(while (progn
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(goto-char comint-last-input-end)
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(not (re-search-forward comint-prompt-regexp nil t)))
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(accept-process-output (get-buffer-process (current-buffer)))))))
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(defun org-babel-comint-last-output (buffer)
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"Return BUFFER's the last output as a string"
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(save-excursion
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(save-match-data
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(set-buffer buffer)
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(goto-char (process-mark (get-buffer-process (current-buffer))))
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(forward-line 0)
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(let ((raw (buffer-substring comint-last-input-end (- (point) 1)))
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output output-flag)
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(mapconcat
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(lambda (el)
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(if (stringp el)
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(format "%s" el)
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(format "%S" el)))
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(delq nil
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(mapcar
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(lambda (line)
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(unless (string-match "^>" line)
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(and (string-match "\\[[[:digit:]]+\\] *\\(.*\\)$" line)
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(match-string 1 line))))
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;; drop first, because it's the last line of input
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(cdr (split-string raw "[\n\r]")))) "\n")))))
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;;; org-babel-comint.el ends here
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