diff options
Diffstat (limited to 'lisp/progmodes/ebnf2ps.el')
| -rw-r--r-- | lisp/progmodes/ebnf2ps.el | 102 |
1 files changed, 49 insertions, 53 deletions
diff --git a/lisp/progmodes/ebnf2ps.el b/lisp/progmodes/ebnf2ps.el index 770acc987f6..7e7efacf1e7 100644 --- a/lisp/progmodes/ebnf2ps.el +++ b/lisp/progmodes/ebnf2ps.el @@ -1,9 +1,9 @@ -;;; ebnf2ps.el --- translate an EBNF to a syntactic chart on PostScript +;;; ebnf2ps.el --- translate an EBNF to a syntactic chart on PostScript -*- lexical-binding:t -*- ;; Copyright (C) 1999-2019 Free Software Foundation, Inc. -;; Author: Vinicius Jose Latorre <viniciusjl@ig.com.br> -;; Maintainer: Vinicius Jose Latorre <viniciusjl@ig.com.br> +;; Author: Vinicius Jose Latorre <viniciusjl.gnu@gmail.com> +;; Maintainer: Vinicius Jose Latorre <viniciusjl.gnu@gmail.com> ;; Keywords: wp, ebnf, PostScript ;; Version: 4.4 ;; X-URL: http://www.emacswiki.org/cgi-bin/wiki/ViniciusJoseLatorre @@ -30,8 +30,7 @@ Vinicius's last change version. When reporting bugs, please also report the version of Emacs, if any, that ebnf2ps was running with. Please send all bug fixes and enhancements to - Vinicius Jose Latorre <viniciusjl@ig.com.br>. -") + Vinicius Jose Latorre <viniciusjl.gnu@gmail.com>.") ;;; Commentary: @@ -1154,6 +1153,7 @@ Please send all bug fixes and enhancements to (require 'ps-print) +(eval-when-compile (require 'cl-lib)) (and (string< ps-print-version "5.2.3") (error "`ebnf2ps' requires `ps-print' package version 5.2.3 or later")) @@ -2047,8 +2047,7 @@ It must be a float between 0.0 (top) and 1.0 (bottom)." (defcustom ebnf-default-width 0.6 - "Specify additional border width over default terminal, non-terminal or -special." + "Additional border width over default terminal, non-terminal or special." :type 'number :version "20" :group 'ebnf2ps) @@ -2252,7 +2251,7 @@ See also `ebnf-print-buffer'." (defun ebnf-print-buffer (&optional filename) "Generate and print a PostScript syntactic chart image of the buffer. -When called with a numeric prefix argument (C-u), prompts the user for +When called with a numeric prefix argument (\\[universal-argument]), prompts the user for the name of a file to save the PostScript image in, instead of sending it to the printer. @@ -2383,6 +2382,7 @@ WARNING: This function does *NOT* ask any confirmation to override existing (ebnf-log-header "(ebnf-eps-buffer)") (ebnf-eps-region (point-min) (point-max))) +(defvar ebnf-eps-executing) ;;;###autoload (defun ebnf-eps-region (from to) @@ -2411,7 +2411,7 @@ WARNING: This function does *NOT* ask any confirmation to override existing ;;;###autoload -(defalias 'ebnf-despool 'ps-despool) +(defalias 'ebnf-despool #'ps-despool) ;;;###autoload @@ -2611,7 +2611,8 @@ See also `ebnf-syntax-buffer'." (defvar ebnf-stack-style nil - "Used in functions `ebnf-reset-style', `ebnf-push-style' and + "Stack of styles. +Used in functions `ebnf-reset-style', `ebnf-push-style' and `ebnf-pop-style'.") @@ -3999,7 +4000,7 @@ See documentation for `ebnf-terminal-shape', `ebnf-non-terminal-shape' and % === end EBNF engine " - "EBNF PostScript prologue") + "EBNF PostScript prologue.") (defconst ebnf-eps-prologue @@ -4276,7 +4277,7 @@ See documentation for `ebnf-terminal-shape', `ebnf-non-terminal-shape' and }bind def " - "EBNF EPS prologue") + "EBNF EPS prologue.") (defconst ebnf-eps-begin @@ -4292,14 +4293,14 @@ end %%EndProlog " - "EBNF EPS begin") + "EBNF EPS begin.") (defconst ebnf-eps-end "#ebnf2ps#end %%EOF " - "EBNF EPS end") + "EBNF EPS end.") ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; @@ -4329,14 +4330,16 @@ end ;; hacked fom `ps-output-string-prim' (ps-print.el) (defun ebnf-eps-string (string) - (let* ((str (string-as-unibyte string)) + (let* ((str string) (len (length str)) (index 0) (new "(") ; insert start-string delimiter start special) ;; Find and quote special characters as necessary for PS - ;; This skips everything except control chars, non-ASCII chars, (, ) and \. - (while (setq start (string-match "[^]-~ -'*-[]" str index)) + ;; This skips everything except control chars, non-ASCII chars, + ;; (, ), \, and DEL. + (while (setq start (string-match "[[:cntrl:][:nonascii:]\177()\\]" + str index)) (setq special (aref str start) new (concat new (substring str index start) @@ -4536,26 +4539,25 @@ end ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; PostScript generation +(defvar ebnf-tree) -(defun ebnf-generate-eps (ebnf-tree) - (let* ((ps-color-p (and ebnf-color-p (ps-color-device))) +(defun ebnf-generate-eps (tree) + (let* ((ebnf-tree tree) + (ps-color-p (and ebnf-color-p (ps-color-device))) (ps-print-color-scale (if ps-color-p (float (car (ps-color-values "white"))) 1.0)) (ebnf-total (length ebnf-tree)) (ebnf-nprod 0) - (old-ps-output (symbol-function 'ps-output)) - (old-ps-output-string (symbol-function 'ps-output-string)) (eps-buffer (get-buffer-create ebnf-eps-buffer-name)) - ebnf-debug-ps error-msg horizontal + ebnf-debug-ps horizontal prod prod-name prod-width prod-height prod-list file-list) - ;; redefines `ps-output' and `ps-output-string' - (defalias 'ps-output 'ebnf-eps-output) - (defalias 'ps-output-string 'ps-output-string-prim) ;; generate EPS file - (save-excursion - (condition-case data - (progn + (unwind-protect + ;; redefines `ps-output' and `ps-output-string' + (cl-letf (((symbol-function 'ps-output) #'ebnf-eps-output) + ((symbol-function 'ps-output-string) #'ps-output-string-prim)) + (save-excursion (while ebnf-tree (setq prod (car ebnf-tree) prod-name (ebnf-node-name prod) @@ -4573,8 +4575,9 @@ end (if (setq prod-list (cdr (assoc prod-name ebnf-eps-production-list))) ;; insert EPS buffer in all buffer associated with production - (ebnf-eps-production-list prod-list 'file-list horizontal - prod-width prod-height eps-buffer) + (ebnf-eps-production-list + prod-list (gv-ref file-list) horizontal + prod-width prod-height eps-buffer) ;; write EPS file for production (ebnf-eps-finish-and-write eps-buffer (ebnf-eps-filename prod-name))) @@ -4584,17 +4587,10 @@ end (setq ebnf-tree (cdr ebnf-tree))) ;; write and kill temporary buffers (ebnf-eps-write-kill-temp file-list t) - (setq file-list nil)) - ;; handler - ((quit error) - (setq error-msg (error-message-string data))))) - ;; restore `ps-output' and `ps-output-string' - (defalias 'ps-output old-ps-output) - (defalias 'ps-output-string old-ps-output-string) - ;; kill temporary buffers - (kill-buffer eps-buffer) - (ebnf-eps-write-kill-temp file-list nil) - (and error-msg (error error-msg)) + (setq file-list nil))) + ;; kill temporary buffers + (kill-buffer eps-buffer) + (ebnf-eps-write-kill-temp file-list nil)) (message " "))) @@ -4610,10 +4606,10 @@ end ;; insert EPS buffer in all buffer associated with production -(defun ebnf-eps-production-list (prod-list file-list-sym horizontal +(defun ebnf-eps-production-list (prod-list file-list-ref horizontal prod-width prod-height eps-buffer) (while prod-list - (add-to-list file-list-sym (car prod-list)) + (cl-pushnew (car prod-list) (gv-deref file-list-ref) :test #'equal) (with-current-buffer (get-buffer-create (concat " *" (car prod-list) "*")) (goto-char (point-max)) (cond @@ -4647,8 +4643,9 @@ end (setq prod-list (cdr prod-list)))) -(defun ebnf-generate (ebnf-tree) - (let* ((ps-color-p (and ebnf-color-p (ps-color-device))) +(defun ebnf-generate (tree) + (let* ((ebnf-tree tree) + (ps-color-p (and ebnf-color-p (ps-color-device))) (ps-print-color-scale (if ps-color-p (float (car (ps-color-values "white"))) 1.0)) @@ -4658,14 +4655,13 @@ end ps-print-begin-page-hook ps-print-begin-column-hook) (ps-generate (current-buffer) (point-min) (point-max) - 'ebnf-generate-postscript))) + #'ebnf-generate-postscript))) -(defvar ebnf-tree nil) (defvar ebnf-direction "R") -(defun ebnf-generate-postscript (from to) +(defun ebnf-generate-postscript (_from _to) (ebnf-begin-file) (if ebnf-horizontal-max-height (ebnf-generate-with-max-height) @@ -5134,7 +5130,7 @@ killed after process termination." (defsubst ebnf-font-background (font) (nth 3 font)) (defsubst ebnf-font-list (font) (nthcdr 4 font)) (defsubst ebnf-font-attributes (font) - (lsh (ps-extension-bit (cdr font)) -2)) + (ash (ps-extension-bit (cdr font)) -2)) (defconst ebnf-font-name-select @@ -5314,9 +5310,9 @@ killed after process termination." "\n%%DocumentNeededResources: font " (or ebnf-fonts-required (setq ebnf-fonts-required - (mapconcat 'identity + (mapconcat #'identity (ps-remove-duplicates - (mapcar 'ebnf-font-name-select + (mapcar #'ebnf-font-name-select (list ebnf-production-font ebnf-terminal-font ebnf-non-terminal-font @@ -5545,7 +5541,7 @@ killed after process termination." (ebnf-log "(ebnf-dimensions tree)") (let ((ebnf-total (length tree)) (ebnf-nprod 0)) - (mapc 'ebnf-production-dimension tree)) + (mapc #'ebnf-production-dimension tree)) tree) @@ -5925,7 +5921,7 @@ killed after process termination." )))) -(defun ebnf-justify (node seq seq-width width last-p) +(defun ebnf-justify (_node seq seq-width width last-p) (let ((term (car (if last-p (last seq) seq)))) (cond ;; adjust empty term |