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;;; struktex.el --- AUCTeX style for `struktex.sty'

;; Copyright (C) 2006 Free Software Foundation, Inc.

;; Author: J. Hoffmann <j.hoffmann@fh-aachen.de>
;; Maintainer: j.hoffmann@fh-aachen.de
;; Created: 2006/01/17
;; Keywords: tex

;;; Commentary:
;;  This file adds support for `struktex.sty'

;;; Code:
(TeX-add-style-hook
 "struktex"
 (lambda ()
   ;; Add declaration to the list of environments which have an optional
   ;; argument for each item.
   (LaTeX-add-environments
    "centernss"
    '("struktogramm" LaTeX-env-struktogramm)
    '("declaration" LaTeX-env-declaration))
   (TeX-add-symbols
    '("PositionNSS" 1)
    '("assert" [ "Height" ] "Assertion")
    '("assign" [ "Height" ] "Statement")
    "StrukTeX"
    '("case" TeX-mac-case)
    "switch" "condition"
    "caseend"
    '("declarationtitle" "Title")
    '("description" "Name" "Meaning")
    "emptyset"
    '("exit" [ "Height" ] "What" )
    '("forever" TeX-mac-forever)
    "foreverend"
    '("ifthenelse" TeX-mac-ifthenelse)
    "ifend"
    "change"
    "sProofOn"
    "sProofOff"
    '("until" TeX-mac-until)
    "untilend"
    '("while" TeX-mac-while)
    "whileend"
    '("return" [ "Height" ] "Return value")
    '("sub" [ "Height" ] "Task")
    '("CenterNssFile" TeX-arg-file)
    '("centernssfile" TeX-arg-file))
   (TeX-run-style-hooks
    "pict2e"
    "emlines2"
    "curves"
    "struktxp"
    "struktxf"
    "ifthen")
   ;; Filling
   ;; Fontification
   ))

(defun LaTeX-env-struktogramm (environment)
  "Insert ENVIRONMENT with width, height specifications and optional title."
  (let ((width (read-string "Width: "))
        (height (read-string "Height: "))
        (title (read-string "Title (optional): ")))
    (LaTeX-insert-environment environment
                              (concat
                               (format "(%s,%s)" width height)
                               (if (not (zerop (length title)))
                                   (format "[%s]" title))))))

(defun LaTeX-env-declaration (environment)
  "Insert ENVIRONMENT with an optional title."
  (let ((title (read-string "Title (optional): ")))
    (LaTeX-insert-environment environment
                               (if (not (zerop (length title)))
                                   (format "[%s]" title)))))

(defun TeX-mac-case (macro)
  "Insert \case with all arguments.
These are optional height and the required arguments slope, number of cases,
condition, and the text of the first case"
  (let ((height (read-string "Height (optional): "))
        (slope (read-string "Slope: "))
        (number (read-string "Number of cases: "))
        (condition (read-string "Condition: "))
        (text (read-string "Text: ")))
    (insert (concat (if (not (zerop (length height)))
                        (format "[%s]" height))
                    (format "{%s}{%s}{%s}{%s}"
                            slope number condition text)))
    (end-of-line)
    (newline-and-indent)
    (newline-and-indent)
    (insert "\\switch{ }")
    (end-of-line)
    (newline-and-indent)
    (newline-and-indent)
    (insert "\\caseend")))

(defun TeX-mac-forever (macro)
  "Insert \forever-block with all arguments.
This is only the optional height"
  (let ((height (read-string "Height (optional): ")))
    (insert (if (not (zerop (length height)))
                (format "[%s]" height)))
    (end-of-line)
    (newline-and-indent)
    (newline-and-indent)
    (insert "\\foreverend")))

(defun TeX-mac-ifthenelse (macro)
  "Insert \ifthenelse with all arguments.
These are optional height and the required arguments left slope, right slope,
condition, and the possible values of the condition"
  (let ((height (read-string "Height (optional): "))
        (lslope (read-string "Left slope: "))
        (rslope (read-string "Right slope: "))
        (condition (read-string "Condition: "))
        (conditionvl (read-string "Condition value left: "))
        (conditionvr (read-string "Condition value right: ")))
    (insert (concat (if (not (zerop (length height)))
                        (format "[%s]" height))
                    (format "{%s}{%s}{%s}{%s}{%s}"
                            lslope rslope condition conditionvl conditionvr)))
    (end-of-line)
    (newline-and-indent)
    (newline-and-indent)
    (insert "\\change")
    (end-of-line)
    (newline-and-indent)
    (newline-and-indent)
    (insert "\\ifend")))

(defun TeX-mac-until (macro)
  "Insert \until with all arguments.
These are the optional height and the required argument condition"
  (let ((height (read-string "Height (optional): "))
        (condition (read-string "Condition: ")))
    (insert (concat (if (not (zerop (length height)))
                        (format "[%s]" height))
                    (format "{%s}" condition)))
    (end-of-line)
    (newline-and-indent)
    (newline-and-indent)
    (insert "\\untilend")))

(defun TeX-mac-while (macro)
  "Insert \while with all arguments.
These are the optional height and the required argument condition"
  (let ((height (read-string "Height (optional): "))
        (condition (read-string "Condition: ")))
    (insert (concat (if (not (zerop (length height)))
                        (format "[%s]" height))
                    (format "{-%s-}" condition)))
    (end-of-line)
    (newline-and-indent)
    (newline-and-indent)
    (insert "\\whileend")))

(defvar LaTeX-struktex-package-options '("curves" "draft" "emlines" "final"
                                         "pict2e" "anygradient" "verification"
                                         "nofiller")
  "Package options for the struktex package.")

;;; struktex.el ends here.