;;; forms-d2.el --- demo forms-mode  -*- lexical-binding:t -*-

;; Copyright (C) 1991, 1994-1997, 2001-2024 Free Software Foundation,
;; Inc.

;; Author: Johan Vromans <jvromans@squirrel.nl>
;; Created: 1989

;; 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 <https://www.gnu.org/licenses/>.

;;; Commentary:

;; This sample forms exploit most of the features of forms mode.

;;; Code:

;; Set the name of the data file.
(setq forms-file (expand-file-name "forms/forms-d2.dat" data-directory))

;; Use 'forms-enumerate' to set field names and number thereof.
(setq forms-number-of-fields
      (forms-enumerate
       '(arch-newsgroup			; 1
	 arch-volume			; 2
	 arch-issue			; and ...
	 arch-article			; ... so
	 arch-shortname			; ... ... on
	 arch-parts
	 arch-from
	 arch-longname
	 arch-keywords
	 arch-date
	 arch-remarks)))

;; The following functions are used by this form for layout purposes.
;;
(defun arch-tocol (target &optional fill)
  "Produces a string to skip to column TARGET.  Prepends newline if needed.
The optional FILL should be a character, used to fill to the column."
  (if (null fill)
      (setq fill ?\s))
  (if (< target (current-column))
      (concat "\n" (make-string target fill))
    (make-string (- target (current-column)) fill)))
;;
(defun arch-rj (target field &optional fill)
  "Produces a string to skip to column TARGET minus the width of field FIELD.
Prepends newline if needed.  The optional FILL should be a character,
used to fill to the column."
  (arch-tocol (- target (length (nth field forms-fields))) fill))

;; Record filters.
;;
(defun arch-new-record-filter (the-record)
  "Form a new record with some defaults."
  (aset the-record arch-from (user-full-name))
  (aset the-record arch-date (current-time-string))
  the-record				; return it
)
(setq forms-new-record-filter 'arch-new-record-filter)

;; The format list.
(setq forms-format-list
     (list
       "====== Public Domain Software Archive ======\n\n"
       arch-shortname
       " - "			arch-longname
       "\n\n"
       "Article: "		arch-newsgroup
       "/"			arch-article
       " "
       '(arch-tocol 40)
       "Issue: "		arch-issue
       " "
       '(arch-rj 73 10)
       "Date: "			arch-date
       "\n\n"
       "Submitted by: "		arch-from
       "\n"
       '(arch-tocol 79 ?-)
       "\n"
       "Keywords: "		arch-keywords
       "\n\n"
       "Parts: "		arch-parts
       "\n\n====== Remarks ======\n\n"
       arch-remarks
     ))

;; That's all, folks!

;;; forms-d2.el ends here
