jv@mh.nl (Johan Vromans) (05/20/91)
Submitted-by: jv@mh.nl Archive-name: forms/part03 ---- Cut Here and feed the following to sh ---- #!/bin/sh # this is forms.shr.03 (part 3 of forms) # do not concatenate these parts, unpack them in order with /bin/sh # file forms.el continued # if test ! -r _shar_seq_.tmp; then echo 'Please unpack part 1 first!' exit 1 fi (read Scheck if test "$Scheck" != 3; then echo Please unpack part "$Scheck" next! exit 1 else exit 0 fi ) < _shar_seq_.tmp || exit 1 if test ! -f _shar_wnt_.tmp; then echo 'x - still skipping forms.el' else echo 'x - continuing file forms.el' sed 's/^X//' << 'SHAR_EOF' >> 'forms.el' && ;;; (forward-char 6) ; past "text: " ;;; ;;; ;; 6 ;;; ;; "\nmore text: " ;;; (setq here (point)) ;;; (if (not (search-forward "\nmore text: " nil t nil)) ;;; (error "parse error: cannot find \"\\nmore text: \"")) ;;; (aset the-recordv 5 (buffer-substring here (- (point) 12))) ;;; ... ;;; ... ;;; ;; final flush (due to terminator sentinel, see below) ;;; (aset the-recordv 7 (buffer-substring (point) (point-max))) ;;; X (defun forms--make-parser () X "Generate parser function for forms" X (setq forms--parser (forms--parser-maker forms-format-list))) X (defun forms--parser-maker (the-format-list) X "Returns the parser function for forms" X (let ((the-field nil) X (seen-text nil) X the--format-list) X ;; concat adjacent strings and add a terminator sentinel X (setq the--format-list X (append (forms--concat-adjacent the-format-list) (list nil))) X (` (lambda nil X (let (here) X (goto-char (point-min)) X (,@ (apply 'append X (mapcar 'forms--make-parser-elt the--format-list)))))))) X (defun forms--make-parser-elt (el) X (cond ((stringp el) X (prog1 X (if the-field X (` ((setq here (point)) X (if (not (search-forward (, el) nil t nil)) X (error "Parse error: cannot find %s" (, el))) X (aset the-recordv (, (1- the-field)) X (buffer-substring here X (- (point) (, (length el))))))) X (` ((if (not (looking-at (, (regexp-quote el)))) X (error "Parse error: not looking at %s" (, el))) X (forward-char (, (length el)))))) X (setq seen-text t) X (setq the-field nil))) X ((numberp el) X (if the-field X (error "Cannot parse adjacent fields %d and %d" X the-field el) X (setq the-field el) X nil)) X ((null el) X (if the-field X (` ((aset the-recordv (, (1- the-field)) X (buffer-substring (point) (point-max))))))))) ;;; X (defun forms--set-minor-mode () X (setq minor-mode-alist X (if forms-read-only X " View" X nil))) X (defun forms--set-keymaps () X "Set the keymaps used in this mode." X X (if forms-read-only X (use-local-map forms-mode-map) X (use-local-map (make-sparse-keymap)) X (define-key (current-local-map) "\C-c" forms-mode-map) X (define-key (current-local-map) "\t" 'forms-next-field))) X (defun forms--mode-commands (map) X "Fill map with all commands." X (define-key map "\t" 'forms-next-field) X (define-key map " " 'forms-next-record) X (define-key map "d" 'forms-delete-record) X (define-key map "e" 'forms-edit-mode) X (define-key map "i" 'forms-insert-record) X (define-key map "j" 'forms-jump-record) X (define-key map "n" 'forms-next-record) X (define-key map "p" 'forms-prev-record) X (define-key map "q" 'forms-exit) X (define-key map "s" 'forms-search) X (define-key map "v" 'forms-view-mode) X (define-key map "x" 'forms-exit-no-save) X (define-key map "<" 'forms-first-record) X (define-key map ">" 'forms-last-record) X (define-key map "?" 'describe-mode) X (define-key map "\177" 'forms-prev-record) X ; (define-key map "\C-c" map) X (define-key map "\e" 'ESC-prefix) X (define-key map "\C-x" ctl-x-map) X (define-key map "\C-u" 'universal-argument) X (define-key map "\C-h" help-map) X ) ;;; ;;; Changed functions ;;; ;;; Emacs (as of 18.55) lacks the functionality of buffer-local ;;; funtions. Therefore we save the original meaning of some handy ;;; functions, and replace them with a wrapper. X (defun forms--change-commands () X "Localize some commands." X ;; X ;; scroll-down -> forms-prev-record X ;; X (if (fboundp 'forms--scroll-down) X nil X (fset 'forms--scroll-down (symbol-function 'scroll-down)) X (fset 'scroll-down X '(lambda (arg) X (interactive "P") X (if (and forms--mode-setup X forms-forms-scroll) X (forms-prev-record arg) X (forms--scroll-down arg))))) X ;; X ;; scroll-up -> forms-next-record X ;; X (if (fboundp 'forms--scroll-up) X nil X (fset 'forms--scroll-up (symbol-function 'scroll-up)) X (fset 'scroll-up X '(lambda (arg) X (interactive "P") X (if (and forms--mode-setup X forms-forms-scroll) X (forms-next-record arg) X (forms--scroll-up arg))))) X ;; X ;; beginning-of-buffer -> forms-first-record X ;; X (if (fboundp 'forms--beginning-of-buffer) X nil X (fset 'forms--beginning-of-buffer (symbol-function 'beginning-of-buffer)) X (fset 'beginning-of-buffer X '(lambda () X (interactive) X (if (and forms--mode-setup X forms-forms-jump) X (forms-first-record) X (forms--beginning-of-buffer))))) X ;; X ;; end-of-buffer -> forms-end-record X ;; X (if (fboundp 'forms--end-of-buffer) X nil X (fset 'forms--end-of-buffer (symbol-function 'end-of-buffer)) X (fset 'end-of-buffer X '(lambda () X (interactive) X (if (and forms--mode-setup X forms-forms-jump) X (forms-last-record) X (forms--end-of-buffer))))) X ;; X ;; save-buffer -> forms--save-buffer X ;; X (if (fboundp 'forms--save-buffer) X nil X (fset 'forms--save-buffer (symbol-function 'save-buffer)) X (fset 'save-buffer X '(lambda (&optional arg) X (interactive "p") X (if forms--mode-setup X (progn X (forms--checkmod) X (save-excursion X (set-buffer forms--file-buffer) X (forms--save-buffer arg))) X (forms--save-buffer arg))))) X ;; X ) X (defun forms--help () X "Initial help." X ;; We should use X ;;(message (substitute-command-keys (concat X ;;"\\[forms-next-record]:next" X ;;" \\[forms-prev-record]:prev" X ;;" \\[forms-first-record]:first" X ;;" \\[forms-last-record]:last" X ;;" \\[describe-mode]:help" X ;;" \\[forms-exit]:exit"))) X ;; but it's too slow .... X (if forms-read-only X (message "SPC:next DEL:prev <:first >:last ?:help q:exit") X (message "C-c n:next C-c p:prev C-c <:first C-c >:last C-c ?:help C-c q:exit"))) X (defun forms--trans (subj arg rep) X "Translate in SUBJ all chars ARG into char REP. ARG and REP should X be single-char strings." X (let ((i 0) X (x (length subj)) X (re (regexp-quote arg)) X (k (string-to-char rep))) X (while (setq i (string-match re subj i)) X (aset subj i k) X (setq i (1+ i))))) X (defun forms--exit (query &optional save) X (let ((buf (buffer-name forms--file-buffer))) X (forms--checkmod) X (if (and save X (buffer-modified-p forms--file-buffer)) X (save-excursion X (set-buffer forms--file-buffer) X (save-buffer))) X (save-excursion X (set-buffer forms--file-buffer) X (delete-auto-save-file-if-necessary) X (kill-buffer (current-buffer))) X (if (get-buffer buf) ; not killed??? X (if save X (progn X (beep) X (message "Problem saving buffers?"))) X (delete-auto-save-file-if-necessary) X (kill-buffer (current-buffer))))) X (defun forms--get-record () X "Fetch the current record from the file buffer." X ;; X ;; This function is executed in the context of the forms--file-buffer. X ;; X (or (bolp) X (beginning-of-line nil)) X (let ((here (point))) X (prog2 X (end-of-line) X (buffer-substring here (point)) X (goto-char here)))) X (defun forms--show-record (the-record) X "Format THE-RECORD according to forms-format-list, X and display it in the current buffer." X X ;; split the-record X (let (the-result X (start-pos 0) X found-pos X (field-sep-length (length forms-field-sep))) X (if forms-multi-line X (forms--trans the-record forms-multi-line "\n")) X ;; add an extra separator (makes splitting easy) X (setq the-record (concat the-record forms-field-sep)) X (while (setq found-pos (string-match forms-field-sep the-record start-pos)) X (let ((ent (substring the-record start-pos found-pos))) X (setq the-result X (append the-result (list ent))) X (setq start-pos (+ field-sep-length found-pos)))) X (setq forms--the-record-list the-result)) X X (setq buffer-read-only nil) X (erase-buffer) X X ;; verify the number of fields, extend forms--the-record-list if needed X (if (= (length forms--the-record-list) forms-number-of-fields) X nil X (beep) X (message "Record has %d fields instead of %d." X (length forms--the-record-list) forms-number-of-fields) X (if (< (length forms--the-record-list) forms-number-of-fields) X (setq forms--the-record-list X (append forms--the-record-list X (make-list X (- forms-number-of-fields X (length forms--the-record-list)) X ""))))) X X ;; call the formatter function X (funcall forms--format forms--the-record-list) X X ;; prepare X (goto-char (point-min)) X (set-buffer-modified-p nil) X (setq buffer-read-only forms-read-only) X (setq mode-line-process X (concat " " forms--current-record "/" forms--total-records))) X (defun forms--parse-form () X "Parse contents of form into list of strings." X ;; The contents of the form are parsed, and a new list of strings X ;; is constructed. X ;; A vector with the strings from the original record is X ;; constructed, which is updated with the new contents. Therefore X ;; fields which were not in the form are not modified. X ;; Finally, the vector is transformed into a list for further processing. X X (let (the-recordv) X X ;; build the vector X (setq the-recordv (vconcat forms--the-record-list)) X X ;; parse the form and update the vector X (funcall forms--parser) X X ;; transform to a list and return X (append the-recordv nil))) X (defun forms--update () X "Update current record with contents of form. As a side effect: sets forms--the-record-list ." X (if forms-read-only X (progn X (message "Read-only buffer!") X (beep)) X X (let (the-record) X ;; build new record X (setq forms--the-record-list (forms--parse-form)) X (setq the-record X (mapconcat 'identity forms--the-record-list forms-field-sep)) X X ;; handle multi-line fields, if allowed X (if forms-multi-line X (forms--trans the-record "\n" forms-multi-line)) X X ;; a final sanity check before updating X (if (string-match "\n" the-record) X (progn X (message "Multi-line fields in this record - update refused!") X (beep)) X X (save-excursion X (set-buffer forms--file-buffer) X ;; Insert something before kill-line is called. See kill-line X ;; doc. Bugfix provided by Ignatios Souvatzis. X (insert "*") X (beginning-of-line) X (kill-line nil) X (insert the-record) X (beginning-of-line)))))) X (defun forms--checkmod () X "Check if this form has been modified, and call forms--update if so." X (if (buffer-modified-p nil) X (let ((here (point))) X (forms--update) X (set-buffer-modified-p nil) X (goto-char here)))) X ;;; ;;; Start and exit (defun forms-find-file (fn) X "Visit file FN in forms mode" X (interactive "fForms file: ") X (find-file-read-only fn) X (or forms--mode-setup (forms-mode t))) X (defun forms-find-file-other-window (fn) X "Visit file FN in form mode in other window" X (interactive "fFbrowse file in other window: ") X (find-file-other-window fn) X (eval-current-buffer) X (or forms--mode-setup (forms-mode t))) X (defun forms-exit (query) X "Normal exit. Modified buffers are saved." X (interactive "P") X (forms--exit query t)) X (defun forms-exit-no-save (query) X "Exit without saving buffers." X (interactive "P") X (forms--exit query nil)) X ;;; ;;; Navigating commands X (defun forms-next-record (arg) X "Advance to the ARGth following record." X (interactive "P") X (forms-jump-record (+ forms--current-record (prefix-numeric-value arg)) t)) X (defun forms-prev-record (arg) X "Advance to the ARGth previous record." X (interactive "P") X (forms-jump-record (- forms--current-record (prefix-numeric-value arg)) t)) X (defun forms-jump-record (arg &optional relative) X "Jump to a random record." X (interactive "NRecord number: ") X X ;; verify that the record number is within range X (if (or (> arg forms--total-records) X (<= arg 0)) X (progn X (beep) X ;; don't give the message if just paging X (if (not relative) X (message "Record number %d out of range 1..%d" X arg forms--total-records)) X ) X X ;; flush X (forms--checkmod) X X ;; calculate displacement X (let ((disp (- arg forms--current-record)) X (cur forms--current-record)) X X ;; forms--show-record needs it now X (setq forms--current-record arg) X X ;; get the record and show it X (forms--show-record X (save-excursion X (set-buffer forms--file-buffer) X (beginning-of-line) X X ;; move, and adjust the amount if needed (shouldn't happen) X (if relative X (if (zerop disp) X nil X (setq cur (+ cur disp (- (forward-line disp))))) X (setq cur (+ cur disp (- (goto-line arg))))) X X (forms--get-record))) X X ;; this shouldn't happen X (if (/= forms--current-record cur) X (progn X (setq forms--current-record cur) X (beep) X (message "Stuck at record %d." cur)))))) X (defun forms-first-record () X "Jump to first record." X (interactive) X (forms-jump-record 1)) X (defun forms-last-record () X "Jump to last record. As a side effect: re-calculates the number X of records in the data file." X (interactive) X (let X ((numrec X (save-excursion X (set-buffer forms--file-buffer) X (count-lines (point-min) (point-max))))) X (if (= numrec forms--total-records) X nil X (beep) X (setq forms--total-records numrec) X (message "Number of records reset to %d." forms--total-records))) X (forms-jump-record forms--total-records)) X ;;; ;;; Other commands (defun forms-view-mode () X "Visit buffer read-only." X (interactive) X (if forms-read-only X nil X (forms--checkmod) ; sync X (setq forms-read-only t) X (forms-mode))) X (defun forms-edit-mode () X "Make form suitable for editing, if possible." X (interactive) X (let ((ro forms-read-only)) X (if (save-excursion X (set-buffer forms--file-buffer) X buffer-read-only) X (progn X (setq forms-read-only t) X (message "No write access to \"%s\"" forms-file) X (beep)) X (setq forms-read-only nil)) X (if (equal ro forms-read-only) X nil X (forms-mode)))) X ;; Sample: ;; (defun forms-new-record-filter (the-fields) ;; ;; numbers are relative to 1 ;; (aset the-fields 4 (current-time-string)) ;; (aset the-fields 6 (user-login-name)) ;; the-list) X (defun forms-insert-record (arg) X "Create a new record before the current one. With ARG: store the X record after the current one. X If a function forms-new-record-filter is defined, is is called to X fill (some of) the fields with default values." X ; The above doc is not true, but for documentary purposes only X X (interactive "P") X X (let ((ln (if arg (1+ forms--current-record) forms--current-record)) X the-list the-record) X X (forms--checkmod) X (if forms--new-record-filter X ;; As a service to the user, we add a zeroth element so she X ;; can use the same indices as in the forms definition. X (let ((the-fields (make-vector (1+ forms-number-of-fields) ""))) X (setq the-fields (funcall forms--new-record-filter the-fields)) X (setq the-list (cdr (append the-fields nil)))) X (setq the-list (make-list forms-number-of-fields ""))) X X (setq the-record X (mapconcat X 'identity X the-list X forms-field-sep)) X X (save-excursion X (set-buffer forms--file-buffer) X (goto-line ln) X (open-line 1) X (insert the-record) X (beginning-of-line)) X X (setq forms--current-record ln)) X X (setq forms--total-records (1+ forms--total-records)) X (forms-jump-record forms--current-record)) X (defun forms-delete-record (arg) X "Deletes a record. With ARG: don't ask." X (interactive "P") X (forms--checkmod) X (if (or arg X (y-or-n-p "Really delete this record? ")) X (let ((ln forms--current-record)) X (save-excursion X (set-buffer forms--file-buffer) X (goto-line ln) X (kill-line 1)) X (setq forms--total-records (1- forms--total-records)) X (if (> forms--current-record forms--total-records) X (setq forms--current-record forms--total-records)) X (forms-jump-record forms--current-record))) X (message "")) X (defun forms-search (regexp) X "Search REGEXP in file buffer." X (interactive X (list (read-string (concat "Search for" X (if forms--search-regexp X (concat " (" X forms--search-regexp X ")")) X ": ")))) X (if (equal "" regexp) X (setq regexp forms--search-regexp)) X (forms--checkmod) X X (let (the-line the-record here X (fld-sep forms-field-sep)) X (if (save-excursion X (set-buffer forms--file-buffer) X (setq here (point)) X (end-of-line) X (if (null (re-search-forward regexp nil t)) X (progn X (goto-char here) X (message (concat "\"" regexp "\" not found.")) X nil) X (setq the-record (forms--get-record)) X (setq the-line (1+ (count-lines (point-min) (point)))))) X (progn X (setq forms--current-record the-line) X (forms--show-record the-record) X (re-search-forward regexp nil t)))) X (setq forms--search-regexp regexp)) X (defun forms-revert-buffer (&optional arg noconfirm) X "Reverts current form to un-modified." X (interactive "P") X (if (or noconfirm X (yes-or-no-p "Revert form to unmodified? ")) X (progn X (set-buffer-modified-p nil) X (forms-jump-record forms--current-record)))) X (defun forms-next-field (arg) X "Jump to ARG-th next field." X (interactive "p") X X (let ((i 0) X (here (point)) X there X (cnt 0)) X X (if (zerop arg) X (setq cnt 1) X (setq cnt (+ cnt arg))) X X (if (catch 'done X (while (< i forms--number-of-markers) X (if (or (null (setq there (aref forms--markers i))) X (<= there here)) X nil X (if (<= (setq cnt (1- cnt)) 0) X (progn X (goto-char there) X (throw 'done t)))) X (setq i (1+ i)))) X nil X (goto-char (aref forms--markers 0))))) SHAR_EOF echo 'File forms.el is complete' && chmod 0444 forms.el || echo 'restore of forms.el failed' Wc_c="`wc -c < 'forms.el'`" test 36048 -eq "$Wc_c" || echo 'forms.el: original size 36048, current size' "$Wc_c" rm -f _shar_wnt_.tmp fi rm -f _shar_seq_.tmp echo You have unpacked the last part exit 0 -- Johan Vromans jv@mh.nl via internet backbones Multihouse Automatisering bv uucp: ..!{uunet,hp4nl}!mh.nl!jv Doesburgweg 7, 2803 PL Gouda, The Netherlands phone/fax: +31 1820 62911/62500 ------------------------ "Arms are made for hugging" -------------------------