diff options
Diffstat (limited to 'vms')
| -rw-r--r-- | vms/make-mms-derivative.el | 176 |
1 files changed, 91 insertions, 85 deletions
diff --git a/vms/make-mms-derivative.el b/vms/make-mms-derivative.el index 700822c29bd..643fe91dfda 100644 --- a/vms/make-mms-derivative.el +++ b/vms/make-mms-derivative.el @@ -24,29 +24,48 @@ ;;; 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 2005, 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: +;; 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: ;; -;; (make-mms-derivative-data 'write-under-root RELATIVE-FILENAME) +;; :output RELATIVE-OUTPUT ;; -;; where RELATIVE-FILENAME is something like "src/descrip.mms_in_in". -;; Over the long run, the convenience procedures provided (see source) +;; 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 1.11 under OpenVMS and the rest of GNU), and the separation -;; of conventions is how people drift apart, dragging their software -;; behind mercilessly. +;; 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) @@ -54,79 +73,66 @@ ;;; 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'.") + "Plist 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)))) - -(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) + (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 ((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 - (write-file - (expand-file-name rel-filename make-mms-derivative-root-dir))) - (kill-buffer buf) - (unless out (message "Munging ... done"))))))) + (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) |