X-Git-Url: http://git.hcoop.net/bpt/emacs.git/blobdiff_plain/fdd401446906c15b45767ee1adf94821075c9dce..69ab3201ca6f6ef1414d678fd9cb13dd4d6f6b95:/vms/make-mms-derivative.el diff --git a/vms/make-mms-derivative.el b/vms/make-mms-derivative.el dissimilarity index 74% index 666ca4ae65..5ef859f512 100644 --- a/vms/make-mms-derivative.el +++ b/vms/make-mms-derivative.el @@ -1,136 +1,139 @@ -;;; make-mms-derivative.el --- framework to do horrible things for VMS support - -;; Copyright (C) 2003 Free Software Foundation, Inc. - -;; Author: Thien-Thi Nguyen -;; Keywords: maint build vms mms makefile levitte autoconf war-is-a-lose -;; Favorite-TV-Game-Show: L'Eredità - -;; 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 2, 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; see the file COPYING. If not, write to the -;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, -;; Boston, MA 02111-1307, USA. - -;;; Commentary: - -;; Under OpenVMS the standard make-like program is called MMS, which -;; looks for an input file in the default directory named DESCRIP.MMS -;; and runs the DCL command rules therein. As of 2003, the build -;; process requires a hand translation of the Makefile.in and related -;; Emacs-specific methodology to DCL and TPU commands, so to alleviate -;; this pain, we provide `make-mms-derivative', which given a source -;; FILENAME (under `make-mms-derivative-root-dir'), inserts the file -;; contents in a new buffer and loads FILENAME-2mms. The elisp in the -;; -2mms file can (do whatever -- it's emacs -- and) arrange to write -;; out the modified buffer after FILENAME-2mms loading by using: -;; -;; (make-mms-derivative-data 'write-under-root RELATIVE-FILENAME) -;; -;; where RELATIVE-FILENAME is something like "src/descrip.mms_in_in". -;; Over the long run, the convenience procedures provided (see source) -;; will be augmented by factoring maximally the -2mms files, squeezing -;; as much algorithm out of those nasty heuristics as possible. What -;; makes them nasty is not that they rely on the conventions of the -;; Emacs makefiles; that's no big deal. What makes them nasty is that -;; they rely on the conventions of separately maintained tools (namely -;; Autoconf 1.11 under OpenVMS and the rest of GNU), and the separation -;; of conventions is how people drift apart, dragging their software -;; behind mercilessly. -;; -;; In general, codified thought w/o self-synchronization is doomed. -;; That a generation would eat its young (most discriminatingly, even) -;; is no reason GNU cannot build around such woe. - -;;; Code: - -(defvar make-mms-derivative-root-dir "AXPA:[TTN.EMACS.EMACS212_3]" - "Source tree root directory.") - -(defvar make-mms-derivative-data nil - "Alist of data specific to `make-mms-derivative'.") - -(defun make-mms-derivative-data (key &optional newval) - (if newval - (setq make-mms-derivative-data - (cons (cons key newval) make-mms-derivative-data)) - (cdr (assq key make-mms-derivative-data)))) - -(defun make-mms-derivative-write-under-root (rel-filename) - (write-file (expand-file-name rel-filename make-mms-derivative-root-dir))) - -(defmacro make-mms-derivative-progn (msg &rest body) - `(progn - (message "(%s) %s" (point) ,msg) - ,@body)) - -(put 'make-mms-derivative-progn 'lisp-indent-function 1) - -(defun make-mms-derivative-load-edits-file (name) - (make-mms-derivative-data 'edits-filename name) - (let (raw-data - (cur (current-buffer)) - (wbuf (get-buffer-create "*make-mms-derivative-load-edits-file work"))) - (set-buffer wbuf) - (insert-file-contents name) - (keep-lines "^;;;[0-9]+;;") - (goto-char (point-max)) - (while (re-search-backward "^;;;\\([0-9]+\\);;\\(.*\\)$" (point-min) t) - (let* ((i (string-to-number (match-string 1))) - (line (match-string 2)) - (look (assq i raw-data))) - (if look - (setcdr look (cons line (cdr look))) - (setq raw-data (cons (list i line) raw-data))))) - (kill-buffer wbuf) - (set-buffer cur) - (mapcar '(lambda (ent) - (setcdr ent (mapconcat '(lambda (line) - (concat line "\n")) - (cdr ent) - ""))) - raw-data) - (make-mms-derivative-data 'raw-data raw-data)) - (load name)) - -(defun make-mms-derivative-insert-raw-data (n) - (insert (cdr (assq n (make-mms-derivative-data 'raw-data))))) - -(defun make-mms-derivative (file) - (interactive "fSource File: ") - (let ((root (expand-file-name make-mms-derivative-root-dir)) - (file (expand-file-name file))) - (when (file-name-absolute-p (file-relative-name file root)) - (error "Not under root (%s)" root)) - (let ((edits-filename (concat file "-2mms"))) - (unless (file-exists-p edits-filename) - (error "Could not find %s" edits-filename)) - (let ((buf (get-buffer-create - (format "*mms-derivative: %s" - (file-relative-name file root))))) - (message "Munging ...") - (switch-to-buffer buf) - (erase-buffer) - (make-variable-buffer-local 'make-mms-derivative-data) - (insert-file file) - (make-mms-derivative-load-edits-file edits-filename) - (let ((out (make-mms-derivative-data 'write-under-root))) - (when out (make-mms-derivative-write-under-root out)) - (kill-buffer buf) - (unless out (message "Munging ... done"))))))) - -(provide 'make-mms-derivative) - -;;; arch-tag: a5b08625-3952-4053-be16-296220e27bb0 -;;; make-mms-derivative.el ends here +;;; make-mms-derivative.el --- framework to do horrible things for VMS support + +;; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 +;; Free Software Foundation, Inc. + +;; Author: Thien-Thi Nguyen +;; Keywords: maint build vms mms makefile levitte autoconf war-is-a-lose + +;; 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 . + +;;; Commentary: + +;; Under VMS the standard make-like program is called MMS, which looks +;; for an input file in the default directory named DESCRIP.MMS and runs +;; the DCL command rules therein. As of 2005, the build process +;; requires a hand translation of the Makefile.in and Emacs-specific +;; methodology to DCL and TPU commands, so to alleviate this pain, we +;; provide `make-mms-derivative', which given a source FILENAME, inserts +;; the file contents in a new buffer and loads FILENAME-2mms. The lisp +;; code in the -2mms file can (do whatever -- it's emacs -- and), as +;; long as it arranges to write out the modified buffer after loading by +;; specifying, on a line of its own, the directive: +;; +;; :output RELATIVE-OUTPUT +;; +;; where RELATIVE-OUTPUT is a filename (a string) relative to FILENAME's +;; directory, typically something simple like "descrip.mms_in_in". Only +;; the first :output directive is recognized. +;; +;; The only other special directive at this time has the form: +;; +;; :gigo NAME +;; ;;blah blah blah +;; ;;(more text here) +;; +;; NAME is anything distinguishable w/ `eq' (number, symbol or keyword). +;; This associates NAME with the block of text starting immediately below +;; the :gigo directive and ending at the first line that does not begin +;; with two semicolons (which are stripped from each line in the block). +;; To insert this block of text, pass NAME to `make-mms-derivative-gigo'. +;; +;; Directives are scanned before normal evaluation, so their placement +;; in the file is not important. During loading, plain strings are +;; displayed in the echo area, prefixed with the current line number. +;; +;; Over the long run, the convenience functions provided (see source) +;; will be augmented by factoring maximally the -2mms files, squeezing +;; as much algorithm out of those nasty heuristics as possible. What +;; makes them nasty is not that they rely on the conventions of the +;; Emacs makefiles; that's no big deal. What makes them nasty is that +;; they rely on the conventions of separately maintained tools (namely +;; Autoconf for VMS and GNU Autoconf), and the separation of conventions +;; is how people drift apart, dragging their software behind +;; mercilessly. +;; +;; In general, codified thought w/o self-synchronization is doomed. +;; That a generation would eat its young (most discriminatingly, even) +;; is no reason GNU cannot build around such woe. + +;;; Code: + +(defvar make-mms-derivative-data nil + "Plist of data specific to `make-mms-derivative'.") + +(defun make-mms-derivative-data (key &optional newval) + (if newval (setq make-mms-derivative-data + (plist-put make-mms-derivative-data key newval)) + (plist-get make-mms-derivative-data key))) + +(defun make-mms-derivative-gigo (name) + "Insert the text associated with :gigo NAME." + (insert (cdr (assq name (make-mms-derivative-data :gigo))))) + +(defun make-mms-derivative (filename) + "Take FILENAME contents, load FILENAME-2mms, and write out the result. +The output file is specified by the :output directive in FILENAME-2mms. +See commentary of make-mms-derivative.el for full documentation." + (interactive "fSource File: ") + (let* ((todo (let ((fn (concat filename "-2mms"))) + (unless (file-exists-p fn) + (error "Could not find %s" fn)) + (set-buffer (get-buffer-create " *make-mms-derivative todo*")) + (insert-file-contents fn) + (current-buffer))) + (deriv (get-buffer-create (format "*mms-derivative: %s" + (file-relative-name filename)))) + output gigo form) + (set-buffer todo) + (re-search-forward "^:output") + (setq output (expand-file-name (read (current-buffer)) + (file-name-directory filename))) + (goto-char (point-min)) + (while (re-search-forward "^:gigo" (point-max) t) + (let ((name (read (current-buffer))) + (p (progn (forward-line 1) (point)))) + (while (looking-at ";;") + (delete-char 2) + (forward-line 1)) + (setq gigo (cons (cons name (buffer-substring p (point))) gigo)) + (delete-region p (point)))) + (message "Munging...") + (switch-to-buffer deriv) + (erase-buffer) + (insert-file-contents filename) + (set (make-local-variable 'make-mms-derivative-data) + (list :gigo gigo)) + (set-buffer todo) + (goto-char (point-min)) + (while (condition-case nil + (setq form (read (current-buffer))) + (end-of-file nil)) + (if (stringp form) + (message "%d: %s" (count-lines (point-min) (point)) form) + (save-excursion + (set-buffer deriv) + (eval form)))) + (set-buffer deriv) + (message "Munging...done") + (write-file output) + (kill-buffer todo) + (kill-buffer deriv))) + +(provide 'make-mms-derivative) + +;; arch-tag: a5b08625-3952-4053-be16-296220e27bb0 +;;; make-mms-derivative.el ends here