;;; ob-sed.el --- Babel Functions for Sed Scripts -*- lexical-binding: t; -*- ;; Copyright (C) 2015-2020 Free Software Foundation, Inc. ;; Author: Bjarte Johansen ;; Keywords: literate programming, reproducible research ;; 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: ;; Provides a way to evaluate sed scripts in Org mode. ;;; Usage: ;; Add to your Emacs config: ;; (org-babel-do-load-languages ;; 'org-babel-load-languages ;; '((sed . t))) ;; In addition to the normal header arguments, ob-sed also provides ;; :cmd-line and :in-file. :cmd-line allows one to pass other flags to ;; the sed command like the "--in-place" flag which makes sed edit the ;; file pass to it instead of outputting to standard out or to a ;; different file. :in-file is a header arguments that allows one to ;; tell Org Babel which file the sed script to act on. ;;; Code: (require 'ob) (defvar org-babel-sed-command "sed" "Name of the sed executable command.") (defvar org-babel-tangle-lang-exts) (add-to-list 'org-babel-tangle-lang-exts '("sed" . "sed")) (defconst org-babel-header-args:sed '((:cmd-line . :any) (:in-file . :any)) "Sed specific header arguments.") (defvar org-babel-default-header-args:sed '() "Default arguments for evaluating a sed source block.") (defun org-babel-execute:sed (body params) "Execute a block of sed code with Org Babel. BODY is the source inside a sed source block and PARAMS is an association list over the source block configurations. This function is called by `org-babel-execute-src-block'." (message "executing sed source code block") (let* ((result-params (cdr (assq :result-params params))) (cmd-line (cdr (assq :cmd-line params))) (in-file (cdr (assq :in-file params))) (code-file (let ((file (org-babel-temp-file "sed-"))) (with-temp-file file (insert body)) file)) (stdin (let ((stdin (cdr (assq :stdin params)))) (when stdin (let ((tmp (org-babel-temp-file "sed-stdin-")) (res (org-babel-ref-resolve stdin))) (with-temp-file tmp (insert res)) tmp)))) (cmd (mapconcat #'identity (remq nil (list org-babel-sed-command (format "-f \"%s\"" code-file) cmd-line in-file)) " "))) (org-babel-reassemble-table (let ((results (cond (stdin (with-temp-buffer (call-process-shell-command cmd stdin (current-buffer)) (buffer-string))) (t (org-babel-eval cmd ""))))) (when results (org-babel-result-cond result-params results (let ((tmp (org-babel-temp-file "sed-results-"))) (with-temp-file tmp (insert results)) (org-babel-import-elisp-from-file tmp))))) (org-babel-pick-name (cdr (assq :colname-names params)) (cdr (assq :colnames params))) (org-babel-pick-name (cdr (assq :rowname-names params)) (cdr (assq :rownames params)))))) (provide 'ob-sed) ;;; ob-sed.el ends here