bc511a64f6
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.
130 lines
3.9 KiB
EmacsLisp
130 lines
3.9 KiB
EmacsLisp
;;; makefile-edit.el --- Makefile editing/scanning commands.
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;; Copyright (C) 2009-2017 Free Software Foundation, Inc.
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;; Author: Eric M. Ludlam <eric@siege-engine.com>
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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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;;
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;; Utilities for editing a Makefile for EDE Makefile management commands.
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;;
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;; Derived from project-am.el.
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;;
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;; Makefile editing and scanning commands
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;;
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;; Formatting of a makefile
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;;
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;; 1) Creating an automakefile, stick in a top level comment about
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;; being created by emacs
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;; 2) Leave order of variable contents alone, except for SOURCE
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;; SOURCE always keep in the order of .c, .h, the other stuff.
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;;; Things to do
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;; makefile-fill-paragraph -- refill a macro w/ backslashes
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;; makefile-insert-macro -- insert "foo = "
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;;; Code:
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(defun makefile-beginning-of-command ()
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"Move to the beginning of the current command."
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(interactive)
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(if (save-excursion
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(forward-line -1)
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(makefile-line-continued-p))
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(forward-line -1))
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(beginning-of-line)
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(if (not (makefile-line-continued-p))
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nil
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(while (and (makefile-line-continued-p)
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(not (bobp)))
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(forward-line -1))
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(forward-line 1)))
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(defun makefile-end-of-command ()
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"Move to the end of the current command."
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(interactive)
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(end-of-line)
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(while (and (makefile-line-continued-p)
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(not (eobp)))
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(forward-line 1)
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(end-of-line)))
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(defun makefile-line-continued-p ()
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"Return non-nil if the current line ends in continuation."
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(save-excursion
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(end-of-line)
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(= (preceding-char) ?\\)))
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;;; Programmatic editing of a Makefile
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;;
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(defun makefile-move-to-macro (macro &optional next)
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"Move to the definition of MACRO. Return t if found.
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If NEXT is non-nil, move to the next occurrence of MACRO."
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(let ((oldpt (point)))
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(when (not next) (goto-char (point-min)))
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(if (re-search-forward (concat "^\\s-*" macro "\\s-*[+:?]?=") nil t)
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t
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(goto-char oldpt)
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nil)))
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(defun makefile-navigate-macro (stop-before)
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"In a list of files, move forward until STOP-BEFORE is reached.
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STOP-BEFORE is a regular expression matching a file name."
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(save-excursion
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(makefile-beginning-of-command)
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(let ((e (save-excursion
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(makefile-end-of-command)
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(point))))
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(if (re-search-forward stop-before nil t)
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(goto-char (match-beginning 0))
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(goto-char e)))))
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(defun makefile-macro-file-list (macro)
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"Return a list of all files in MACRO."
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(save-excursion
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(goto-char (point-min))
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(let ((lst nil)
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(case-fold-search nil))
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(while (makefile-move-to-macro macro t)
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(let ((e (save-excursion
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(makefile-end-of-command)
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(point))))
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(while (re-search-forward "\\s-**\\([-a-zA-Z0-9./_@$%(){}]+\\)\\s-*" e t)
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(let ((var nil)(varexp nil)
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(match (buffer-substring-no-properties
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(match-beginning 1)
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(match-end 1))))
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(if (not (setq var (makefile-extract-varname-from-text match)))
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(setq lst (cons match lst))
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(setq varexp (makefile-macro-file-list var))
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(dolist (V varexp)
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(setq lst (cons V lst))))))))
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(nreverse lst))))
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(defun makefile-extract-varname-from-text (text)
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"Extract the variable name from TEXT if it is a variable reference.
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Return nil if it isn't a variable."
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(save-match-data
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(when (string-match "\\$\\s(\\([A-Za-z0-9_]+\\)\\s)" text)
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(match-string 1 text))))
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(provide 'ede/makefile-edit)
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;;; ede/makefile-edit.el ends here
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