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authormattkae <mattkae@protonmail.com>2022-06-07 08:23:47 -0400
committermattkae <mattkae@protonmail.com>2022-06-07 08:23:47 -0400
commitbd18a38c2898548a3664a9ddab9f79c84f2caf4a (patch)
tree95b9933376770381bd8859782ae763be81c2d72b /elpa/org-9.5.2/ob-eval.el
parentb07628dddf418d4f47b858e6c35fd3520fbaeed2 (diff)
parentef160dea332af4b4fe5e2717b962936c67e5fe9e (diff)
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-;;; ob-eval.el --- Babel Functions for External Code Evaluation -*- lexical-binding: t; -*-
-
-;; Copyright (C) 2009-2021 Free Software Foundation, Inc.
-
-;; Author: Eric Schulte
-;; Keywords: literate programming, reproducible research, comint
-;; Homepage: https://orgmode.org
-
-;; 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 <https://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; These functions build existing Emacs support for executing external
-;; shell commands.
-
-;;; Code:
-(require 'org-macs)
-
-(defvar org-babel-error-buffer-name "*Org-Babel Error Output*")
-(declare-function org-babel-temp-file "ob-core" (prefix &optional suffix))
-
-(defun org-babel-eval-error-notify (exit-code stderr)
- "Open a buffer to display STDERR and a message with the value of EXIT-CODE."
- (let ((buf (get-buffer-create org-babel-error-buffer-name)))
- (with-current-buffer buf
- (goto-char (point-max))
- (save-excursion (insert stderr)))
- (display-buffer buf))
- (message "Babel evaluation exited with code %S" exit-code))
-
-(defun org-babel-eval (command query)
- "Run COMMAND on QUERY.
-Writes QUERY into a temp-buffer that is processed with
-`org-babel--shell-command-on-region'. If COMMAND succeeds then return
-its results, otherwise display STDERR with
-`org-babel-eval-error-notify'."
- (let ((error-buffer (get-buffer-create " *Org-Babel Error*")) exit-code)
- (with-current-buffer error-buffer (erase-buffer))
- (with-temp-buffer
- (insert query)
- (setq exit-code
- (org-babel--shell-command-on-region
- command error-buffer))
- (if (or (not (numberp exit-code)) (> exit-code 0))
- (progn
- (with-current-buffer error-buffer
- (org-babel-eval-error-notify exit-code (buffer-string)))
- (save-excursion
- (when (get-buffer org-babel-error-buffer-name)
- (with-current-buffer org-babel-error-buffer-name
- (unless (derived-mode-p 'compilation-mode)
- (compilation-mode))
- ;; Compilation-mode enforces read-only, but Babel expects the buffer modifiable.
- (setq buffer-read-only nil))))
- nil)
- (buffer-string)))))
-
-(defun org-babel-eval-read-file (file)
- "Return the contents of FILE as a string."
- (with-temp-buffer (insert-file-contents file)
- (buffer-string)))
-
-(defun org-babel--shell-command-on-region (command error-buffer)
- "Execute COMMAND in an inferior shell with region as input.
-Stripped down version of `shell-command-on-region' for internal use in
-Babel only. This lets us work around errors in the original function
-in various versions of Emacs. This expects the query to be run to be
-in the current temp buffer. This is written into
-input-file. ERROR-BUFFER is the name of the file which
-`org-babel-eval' has created to use for any error messages that are
-returned."
-
- (let ((input-file (org-babel-temp-file "ob-input-"))
- (error-file (if error-buffer (org-babel-temp-file "ob-error-") nil))
- (shell-file-name (org-babel--get-shell-file-name))
- exit-status)
- ;; There is an error in `process-file' when `error-file' exists.
- ;; This is fixed in Emacs trunk as of 2012-12-21; let's use this
- ;; workaround for now.
- (unless (file-remote-p default-directory)
- (delete-file error-file))
- ;; we always call this with 'replace, remove conditional
- ;; Replace specified region with output from command.
- (org-babel--write-temp-buffer-input-file input-file)
- (setq exit-status
- (process-file shell-file-name input-file
- (if error-file
- (list t error-file)
- t)
- nil shell-command-switch command))
-
- (when (and input-file (file-exists-p input-file)
- ;; bind org-babel--debug-input around the call to keep
- ;; the temporary input files available for inspection
- (not (when (boundp 'org-babel--debug-input)
- org-babel--debug-input)))
- (delete-file input-file))
-
- (when (and error-file (file-exists-p error-file))
- (when (< 0 (file-attribute-size (file-attributes error-file)))
- (with-current-buffer (get-buffer-create error-buffer)
- (let ((pos-from-end (- (point-max) (point))))
- (or (bobp)
- (insert "\f\n"))
- ;; Do no formatting while reading error file,
- ;; because that can run a shell command, and we
- ;; don't want that to cause an infinite recursion.
- (format-insert-file error-file nil)
- ;; Put point after the inserted errors.
- (goto-char (- (point-max) pos-from-end)))
- (current-buffer)))
- (delete-file error-file))
- exit-status))
-
-(defun org-babel--write-temp-buffer-input-file (input-file)
- "Write the contents of the current temp buffer into INPUT-FILE."
- (let ((start (point-min))
- (end (point-max)))
- (goto-char start)
- (push-mark (point) 'nomsg)
- (write-region start end input-file)
- (delete-region start end)
- (exchange-point-and-mark)))
-
-(defun org-babel-eval-wipe-error-buffer ()
- "Delete the contents of the Org code block error buffer.
-This buffer is named by `org-babel-error-buffer-name'."
- (when (get-buffer org-babel-error-buffer-name)
- (with-current-buffer org-babel-error-buffer-name
- (delete-region (point-min) (point-max)))))
-
-(defun org-babel--get-shell-file-name ()
- "Return system `shell-file-name', defaulting to /bin/sh.
-Unfortunately, `executable-find' does not support file name
-handlers. Therefore, we could use it in the local case only."
- ;; FIXME: This is generic enough that it should probably be in emacs, not org-mode
- (cond ((and (not (file-remote-p default-directory))
- (executable-find shell-file-name))
- shell-file-name)
- ((file-executable-p
- (concat (file-remote-p default-directory) shell-file-name))
- shell-file-name)
- ("/bin/sh")))
-
-(provide 'ob-eval)
-
-;;; ob-eval.el ends here