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Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
111 lines
3.8 KiB
EmacsLisp
111 lines
3.8 KiB
EmacsLisp
;;; ob-awk.el --- Babel Functions for Awk -*- lexical-binding: t; -*-
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;; Copyright (C) 2011-2017 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs 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 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs 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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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Babel's awk can use special header argument:
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;;
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;; - :in-file takes a path to a file of data to be processed by awk
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;;
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;; - :stdin takes an Org data or code block reference, the value of
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;; which will be passed to the awk process through STDIN
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;;; Code:
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(require 'ob)
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(require 'org-compat)
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(declare-function org-babel-ref-resolve "ob-ref" (ref))
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(declare-function orgtbl-to-generic "org-table" (table params))
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("awk" . "awk"))
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(defvar org-babel-awk-command "awk"
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"Name of the awk executable command.")
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(defun org-babel-expand-body:awk (body _params)
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"Expand BODY according to PARAMS, return the expanded body."
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body)
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(defun org-babel-execute:awk (body params)
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"Execute a block of Awk code with org-babel. This function is
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called by `org-babel-execute-src-block'"
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(message "executing Awk source code block")
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(let* ((result-params (cdr (assq :result-params params)))
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(cmd-line (cdr (assq :cmd-line params)))
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(in-file (cdr (assq :in-file params)))
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(full-body (org-babel-expand-body:awk body params))
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(code-file (let ((file (org-babel-temp-file "awk-")))
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(with-temp-file file (insert full-body)) file))
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(stdin (let ((stdin (cdr (assq :stdin params))))
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(when stdin
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(let ((tmp (org-babel-temp-file "awk-stdin-"))
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(res (org-babel-ref-resolve stdin)))
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(with-temp-file tmp
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(insert (org-babel-awk-var-to-awk res)))
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tmp))))
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(cmd (mapconcat #'identity
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(append
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(list org-babel-awk-command
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"-f" code-file cmd-line)
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(mapcar (lambda (pair)
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(format "-v %s='%s'"
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(car pair)
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(org-babel-awk-var-to-awk
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(cdr pair))))
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(org-babel--get-vars params))
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(list in-file))
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" ")))
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(org-babel-reassemble-table
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(let ((results
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(cond
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(stdin (with-temp-buffer
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(call-process-shell-command cmd stdin (current-buffer))
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(buffer-string)))
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(t (org-babel-eval cmd "")))))
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(when results
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(org-babel-result-cond result-params
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results
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(let ((tmp (org-babel-temp-file "awk-results-")))
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(with-temp-file tmp (insert results))
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(org-babel-import-elisp-from-file tmp)))))
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(org-babel-pick-name
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(cdr (assq :colname-names params)) (cdr (assq :colnames params)))
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(org-babel-pick-name
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(cdr (assq :rowname-names params)) (cdr (assq :rownames params))))))
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(defun org-babel-awk-var-to-awk (var &optional sep)
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"Return a printed value of VAR suitable for parsing with awk."
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(let ((echo-var (lambda (v) (if (stringp v) v (format "%S" v)))))
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(cond
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((and (listp var) (listp (car var)))
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(orgtbl-to-generic var (list :sep (or sep "\t") :fmt echo-var)))
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((listp var)
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(mapconcat echo-var var "\n"))
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(t (funcall echo-var var)))))
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(provide 'ob-awk)
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;;; ob-awk.el ends here
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