mirror of
https://git.savannah.gnu.org/git/emacs/org-mode.git
synced 2024-11-30 08:08:26 +00:00
114 lines
4.1 KiB
EmacsLisp
114 lines
4.1 KiB
EmacsLisp
;;; ob-awk.el --- org-babel functions for awk evaluation
|
|
|
|
;; Copyright (C) 2011-2014 Free Software Foundation, Inc.
|
|
|
|
;; Author: Eric Schulte
|
|
;; Keywords: literate programming, reproducible research
|
|
;; Homepage: http://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 <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; Babel's awk can use special header argument:
|
|
;;
|
|
;; - :in-file takes a path to a file of data to be processed by awk
|
|
;;
|
|
;; - :stdin takes an Org-mode data or code block reference, the value
|
|
;; of which will be passed to the awk process through STDIN
|
|
|
|
;;; Code:
|
|
(require 'ob)
|
|
(require 'org-compat)
|
|
(eval-when-compile (require 'cl))
|
|
|
|
(declare-function org-babel-ref-resolve "ob-ref" (ref))
|
|
(declare-function orgtbl-to-generic "org-table" (table params))
|
|
|
|
(defvar org-babel-tangle-lang-exts)
|
|
(add-to-list 'org-babel-tangle-lang-exts '("awk" . "awk"))
|
|
|
|
(defvar org-babel-awk-command "awk"
|
|
"Name of the awk executable command.")
|
|
|
|
(defun org-babel-expand-body:awk (body params)
|
|
"Expand BODY according to PARAMS, return the expanded body."
|
|
(dolist (pair (mapcar #'cdr (org-babel-get-header params :var)))
|
|
(setf body (replace-regexp-in-string
|
|
(regexp-quote (format "$%s" (car pair))) (cdr pair) body)))
|
|
body)
|
|
|
|
(defun org-babel-execute:awk (body params)
|
|
"Execute a block of Awk code with org-babel. This function is
|
|
called by `org-babel-execute-src-block'"
|
|
(message "executing Awk source code block")
|
|
(let* ((result-params (cdr (assoc :result-params params)))
|
|
(cmd-line (cdr (assoc :cmd-line params)))
|
|
(in-file (cdr (assoc :in-file params)))
|
|
(full-body (org-babel-expand-body:awk body params))
|
|
(code-file (let ((file (org-babel-temp-file "awk-")))
|
|
(with-temp-file file (insert full-body)) file))
|
|
(stdin (let ((stdin (cdr (assoc :stdin params))))
|
|
(when stdin
|
|
(let ((tmp (org-babel-temp-file "awk-stdin-"))
|
|
(res (org-babel-ref-resolve stdin)))
|
|
(with-temp-file tmp
|
|
(insert (org-babel-awk-var-to-awk res)))
|
|
tmp))))
|
|
(cmd (mapconcat #'identity (remove nil (list org-babel-awk-command
|
|
"-f" 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 "awk-results-")))
|
|
(with-temp-file tmp (insert results))
|
|
(org-babel-import-elisp-from-file tmp)))))
|
|
(org-babel-pick-name
|
|
(cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
|
|
(org-babel-pick-name
|
|
(cdr (assoc :rowname-names params)) (cdr (assoc :rownames params))))))
|
|
|
|
(defun org-babel-awk-var-to-awk (var &optional sep)
|
|
"Return a printed value of VAR suitable for parsing with awk."
|
|
(let ((echo-var (lambda (v) (if (stringp v) v (format "%S" v)))))
|
|
(cond
|
|
((and (listp var) (listp (car var)))
|
|
(orgtbl-to-generic var (list :sep (or sep "\t") :fmt echo-var)))
|
|
((listp var)
|
|
(mapconcat echo-var var "\n"))
|
|
(t (funcall echo-var var)))))
|
|
|
|
(defun org-babel-awk-table-or-string (results)
|
|
"If the results look like a table, then convert them into an
|
|
Emacs-lisp table, otherwise return the results as a string."
|
|
(org-babel-script-escape results))
|
|
|
|
(provide 'ob-awk)
|
|
|
|
|
|
|
|
;;; ob-awk.el ends here
|