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Diffstat (limited to '.emacs.d/org-7.4/lisp/ob-comint.el')
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1 files changed, 163 insertions, 0 deletions
diff --git a/.emacs.d/org-7.4/lisp/ob-comint.el b/.emacs.d/org-7.4/lisp/ob-comint.el new file mode 100644 index 0000000..064aad5 --- /dev/null +++ b/.emacs.d/org-7.4/lisp/ob-comint.el @@ -0,0 +1,163 @@ +;;; ob-comint.el --- org-babel functions for interaction with comint buffers + +;; Copyright (C) 2009, 2010 Free Software Foundation, Inc. + +;; Author: Eric Schulte +;; Keywords: literate programming, reproducible research, comint +;; Homepage: http://orgmode.org +;; Version: 7.4 + +;; 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: + +;; These functions build on comint to ease the sending and receiving +;; of commands and results from comint buffers. + +;; Note that the buffers in this file are analogous to sessions in +;; org-babel at large. + +;;; Code: +(require 'ob) +(require 'comint) +(eval-when-compile (require 'cl)) +(declare-function with-parsed-tramp-file-name "tramp" (filename var &rest body)) +(declare-function tramp-flush-directory-property "tramp" (vec directory)) + +(defun org-babel-comint-buffer-livep (buffer) + "Check if BUFFER is a comint buffer with a live process." + (let ((buffer (if buffer (get-buffer buffer)))) + (and buffer (buffer-live-p buffer) (get-buffer-process buffer) buffer))) + +(defmacro org-babel-comint-in-buffer (buffer &rest body) + "Check BUFFER and execute BODY. +BUFFER is checked with `org-babel-comint-buffer-livep'. BODY is +executed inside the protection of `save-excursion' and +`save-match-data'." + (declare (indent 1)) + `(save-excursion + (save-match-data + (unless (org-babel-comint-buffer-livep ,buffer) + (error "buffer %s doesn't exist or has no process" ,buffer)) + (set-buffer ,buffer) + ,@body))) + +(defmacro org-babel-comint-with-output (meta &rest body) + "Evaluate BODY in BUFFER and return process output. +Will wait until EOE-INDICATOR appears in the output, then return +all process output. If REMOVE-ECHO and FULL-BODY are present and +non-nil, then strip echo'd body from the returned output. META +should be a list containing the following where the last two +elements are optional. + + (BUFFER EOE-INDICATOR REMOVE-ECHO FULL-BODY) + +This macro ensures that the filter is removed in case of an error +or user `keyboard-quit' during execution of body." + (declare (indent 1)) + (let ((buffer (car meta)) + (eoe-indicator (cadr meta)) + (remove-echo (cadr (cdr meta))) + (full-body (cadr (cdr (cdr meta))))) + `(org-babel-comint-in-buffer ,buffer + (let ((string-buffer "") dangling-text raw) + (flet ((my-filt (text) + (setq string-buffer (concat string-buffer text)))) + ;; setup filter + (add-hook 'comint-output-filter-functions 'my-filt) + (unwind-protect + (progn + ;; got located, and save dangling text + (goto-char (process-mark (get-buffer-process (current-buffer)))) + (let ((start (point)) + (end (point-max))) + (setq dangling-text (buffer-substring start end)) + (delete-region start end)) + ;; pass FULL-BODY to process + ,@body + ;; wait for end-of-evaluation indicator + (while (progn + (goto-char comint-last-input-end) + (not (save-excursion + (and (re-search-forward + comint-prompt-regexp nil t) + (re-search-forward + (regexp-quote ,eoe-indicator) nil t))))) + (accept-process-output (get-buffer-process (current-buffer))) + ;; thought the following this would allow async + ;; background running, but I was wrong... + ;; (run-with-timer .5 .5 'accept-process-output + ;; (get-buffer-process (current-buffer))) + ) + ;; replace cut dangling text + (goto-char (process-mark (get-buffer-process (current-buffer)))) + (insert dangling-text)) + ;; remove filter + (remove-hook 'comint-output-filter-functions 'my-filt))) + ;; remove echo'd FULL-BODY from input + (if (and ,remove-echo ,full-body + (string-match + (replace-regexp-in-string + "\n" "[\r\n]+" (regexp-quote (or ,full-body ""))) + string-buffer)) + (setq raw (substring string-buffer (match-end 0)))) + (split-string string-buffer comint-prompt-regexp))))) + +(defun org-babel-comint-input-command (buffer cmd) + "Pass CMD to BUFFER. +The input will not be echoed." + (org-babel-comint-in-buffer buffer + (goto-char (process-mark (get-buffer-process buffer))) + (insert cmd) + (comint-send-input) + (org-babel-comint-wait-for-output buffer))) + +(defun org-babel-comint-wait-for-output (buffer) + "Wait until output arrives from BUFFER. +Note: this is only safe when waiting for the result of a single +statement (not large blocks of code)." + (org-babel-comint-in-buffer buffer + (while (progn + (goto-char comint-last-input-end) + (not (and (re-search-forward comint-prompt-regexp nil t) + (goto-char (match-beginning 0)) + (string= (face-name (face-at-point)) + "comint-highlight-prompt")))) + (accept-process-output (get-buffer-process buffer))))) + +(defun org-babel-comint-eval-invisibly-and-wait-for-file + (buffer file string &optional period) + "Evaluate STRING in BUFFER invisibly. +Don't return until FILE exists. Code in STRING must ensure that +FILE exists at end of evaluation." + (unless (org-babel-comint-buffer-livep buffer) + (error "buffer %s doesn't exist or has no process" buffer)) + (if (file-exists-p file) (delete-file file)) + (process-send-string + (get-buffer-process buffer) + (if (string-match "\n$" string) string (concat string "\n"))) + ;; From Tramp 2.1.19 the following cache flush is not necessary + (if (file-remote-p default-directory) + (let (v) + (with-parsed-tramp-file-name default-directory nil + (tramp-flush-directory-property v "")))) + (while (not (file-exists-p file)) (sit-for (or period 0.25)))) + +(provide 'ob-comint) + +;; arch-tag: 9adddce6-0864-4be3-b0b5-6c5157dc7889 + +;;; ob-comint.el ends here |