*** empty log message ***
This commit is contained in:
demattia
commit
a361435f30
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@ -0,0 +1,28 @@
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# CVS default ignores begin
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||||
tags
|
||||
TAGS
|
||||
.make.state
|
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.nse_depinfo
|
||||
*~
|
||||
\#*
|
||||
.#*
|
||||
,*
|
||||
_$*
|
||||
*$
|
||||
*.old
|
||||
*.bak
|
||||
*.BAK
|
||||
*.orig
|
||||
*.rej
|
||||
.del-*
|
||||
*.a
|
||||
*.olb
|
||||
*.o
|
||||
*.obj
|
||||
*.so
|
||||
*.exe
|
||||
*.Z
|
||||
*.elc
|
||||
*.ln
|
||||
core
|
||||
# CVS default ignores end
|
||||
|
|
@ -0,0 +1,97 @@
|
|||
;;; Handle fatal errors in a sensible way. -*- Scheme -*-
|
||||
|
||||
;;; This file is part of the Scheme Untergrund Networking package.
|
||||
|
||||
;;; Copyright (c) 1995 by Olin Shivers.
|
||||
;;; For copyright information, see the file COPYING which comes with
|
||||
;;; the distribution.
|
||||
|
||||
;;; (with-fatal-error-handler* handler thunk)
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
;;; Call THUNK, and return whatever it returns. If THUNK signals a condition,
|
||||
;;; and that condition is an error condition (or a subtype of error), then
|
||||
;;; HANDLER gets a chance to handle it.
|
||||
;;; The HANDLER proc is applied to two values:
|
||||
;;; (HANDLER condition decline)
|
||||
;;; HANDLER's continuation is WITH-FATAL-ERROR-HANDLER*'s; whatever HANDLER
|
||||
;;; returns is returned from WITH-FATAL-ERROR-HANDLER. HANDLER declines to
|
||||
;;; handle the error by throwing to DECLINE, a nullary continuation.
|
||||
;;;
|
||||
;;; Why is it called with-FATAL-error-handler*? Because returning to the
|
||||
;;; guy that signalled the error is not an option.
|
||||
;;;
|
||||
;;; Why the nested outer pair of CALL/CC's? Well, what happens if the user's
|
||||
;;; error handler *itself* raises an error? This could potentially give
|
||||
;;; rise to an infinite loop, because WITH-HANDLER runs its handler in
|
||||
;;; the original condition-signaller's context, so you'd search back for a
|
||||
;;; handler, and find yourself again. For example, here is an infinite loop:
|
||||
;;;
|
||||
;;; (with-handler (lambda (condition more)
|
||||
;;; (display "Loop!")
|
||||
;;; (error "ouch")) ; Get back, Loretta.
|
||||
;;; (lambda () (error "start me up")))
|
||||
;;;
|
||||
;;; I could require W-F-E-H* users to code carefully, but instead I make sure
|
||||
;;; the user's fatal-error handler runs in w-f-e-h*'s handler context, so
|
||||
;;; if it signals a condition, we'll start the search from there. That's the
|
||||
;;; point of continuation K. When the original thunk completes successfully,
|
||||
;;; we dodge the K hackery by using ACCEPT to make a normal return.
|
||||
|
||||
(define (with-fatal-error-handler* handler thunk)
|
||||
(call-with-current-continuation
|
||||
(lambda (accept)
|
||||
((call-with-current-continuation
|
||||
(lambda (k)
|
||||
(with-handler (lambda (condition more)
|
||||
(if (error? condition)
|
||||
(call-with-current-continuation
|
||||
(lambda (decline)
|
||||
(k (lambda () (handler condition decline))))))
|
||||
(more)) ; Keep looking for a handler.
|
||||
(lambda () (call-with-values thunk accept)))))))))
|
||||
|
||||
(define-syntax with-fatal-error-handler
|
||||
(syntax-rules ()
|
||||
((with-fatal-error-handler handler body ...)
|
||||
(with-fatal-error-handler* handler
|
||||
(lambda () body ...)))))
|
||||
|
||||
;This one ran HANDLER in the signaller's condition-handler context.
|
||||
;It was therefore susceptible to infinite loops if you didn't code
|
||||
;your handler's carefully.
|
||||
;
|
||||
;(define (with-fatal-error-handler* handler thunk)
|
||||
; (call-with-current-continuation
|
||||
; (lambda (accept)
|
||||
; (with-handler (lambda (condition more)
|
||||
; (if (error? condition)
|
||||
; (call-with-current-continuation
|
||||
; (lambda (decline)
|
||||
; (accept (handler condition decline)))))
|
||||
; (more)) ; Keep looking for a handler.
|
||||
; thunk))))
|
||||
|
||||
;;; (%error-handler-cond kont eh-clauses cond-clauses)
|
||||
;;; Transform error-handler clauses into COND clauses by wrapping continuation
|
||||
;;; KONT around the body of each e-h clause, so that if it fires, the result
|
||||
;;; is thrown to KONT, but if no clause fires, the cond returns to the default
|
||||
;;; continuation.
|
||||
|
||||
;(define-syntax %error-handler-cond
|
||||
; (syntax-rules (=> else)
|
||||
;
|
||||
; ((%error-handler-cond kont ((test => proc) clause ...) (ans ...))
|
||||
; (%error-handler-cond kont
|
||||
; (clause ...)
|
||||
; ((test => (lambda (v) (kont (proc v)))) ans ...)))
|
||||
;
|
||||
; ((%error-handler-cond kont ((test body ...) clause ...) (ans ...))
|
||||
; (%error-handler-cond kont
|
||||
; (clause ...)
|
||||
; ((test (kont (begin body ...))) ans ...)))
|
||||
;
|
||||
; ((%error-handler-cond kont ((else body ...)) (ans-clause ...))
|
||||
; (cond (else body ...) ans-clause ...))
|
||||
;
|
||||
; ((%error-handler-cond kont () (ans-clause ...))
|
||||
; (cond ans-clause ...))))
|
||||
|
|
@ -0,0 +1,589 @@
|
|||
;; ,load /home/demattia/studium/studienarbeit/scsh-nuit/scheme/nuit-engine.scm
|
||||
|
||||
|
||||
;;*************************************************************************
|
||||
;;Zustand
|
||||
|
||||
;;Zustand des oberen Fensters (Command-Window)
|
||||
;;---------------------------
|
||||
|
||||
;;Text
|
||||
(define text-command (list "Welcome in the scsh-ncurses-ui!" ""))
|
||||
|
||||
;;gibt an, in welcher Zeile der gesamten Command-History man sich befindet
|
||||
(define pos-command 2)
|
||||
;;in welcher Spalte
|
||||
(define pos-command-col 2)
|
||||
|
||||
;;gibt an, in welcher Zeile des Buffers nach Zeilenumbruch man sich befindet.
|
||||
(define pos-command-fin-ln 2)
|
||||
|
||||
;;gibt an, in welcher Zeile des Buffers man sich befindet
|
||||
(define command-buffer-pos-y 2)
|
||||
;;gibt an, an welcher Position des Buffers man sich befindet.
|
||||
(define command-buffer-pos-x 2)
|
||||
|
||||
;;Anzahl der Zeilen des Commando-Buffers
|
||||
(define command-lines 0)
|
||||
|
||||
;;Anzahl der Spalten des Commando-Buffers
|
||||
(define command-cols 0)
|
||||
|
||||
;;befindet sich der cursor am Ende der letzten Zeile des command-wins?
|
||||
(define can-write-command #t)
|
||||
|
||||
|
||||
;;Zustand des unteren Fensters (Result-Window)
|
||||
;;----------------------------
|
||||
|
||||
;;Text
|
||||
(define text-result (list "Start entering commands."
|
||||
"Ctrl-h for help."))
|
||||
|
||||
;;gibt an, in welcher Zeile des Result-Buffers man sich befindet
|
||||
(define pos-result 2)
|
||||
;;in welcher Spalte
|
||||
(define pos-result-col 17)
|
||||
|
||||
;;gibt an, in welcher Zeile des Buffers man sich befindet
|
||||
(define result-buffer-pos-y 2)
|
||||
;;gibt an, an welcher Position des Buffers man sich befindet.
|
||||
(define result-buffer-pos-x 2)
|
||||
|
||||
;;Anzahl der Zeilen des Buffers
|
||||
(define result-lines 0)
|
||||
;;Anzahl der Spalten des Buffers
|
||||
(define result-cols 0)
|
||||
|
||||
|
||||
|
||||
;;allgemeiner Zustand
|
||||
;;-------------------
|
||||
|
||||
;;entweder 1...oben oder 2...unten
|
||||
(define active-buffer 1)
|
||||
|
||||
|
||||
;;*************************************************************************
|
||||
;;Verhalten
|
||||
|
||||
;;Eingabe verarbeiten
|
||||
(define run
|
||||
(lambda ()
|
||||
(let loop ((ch (paint)))
|
||||
(cond
|
||||
|
||||
;;Beenden
|
||||
((= ch key-f1)
|
||||
#t)
|
||||
|
||||
;;Enter
|
||||
((= ch 10)
|
||||
(if (= active-buffer 1)
|
||||
(begin
|
||||
(execute-command)
|
||||
(loop (paint)))
|
||||
(loop (paint))))
|
||||
|
||||
;;Backspace
|
||||
((= ch key-backspace)
|
||||
(if (= active-buffer 1)
|
||||
(if can-write-command
|
||||
(if (< pos-command-col 3)
|
||||
(loop (paint))
|
||||
(begin
|
||||
(remove-from-command-buffer)
|
||||
(set! pos-command-col (- pos-command-col 1))
|
||||
(loop (paint))))
|
||||
(loop (paint)))
|
||||
(loop (paint))))
|
||||
|
||||
;;Navigieren
|
||||
((= ch key-up)
|
||||
(if (= active-buffer 1)
|
||||
(if (< pos-command-fin-ln 2)
|
||||
(loop (paint))
|
||||
(let ((length-prev-line
|
||||
(string-length
|
||||
(list-ref text-command (- pos-command 2)))))
|
||||
(begin
|
||||
(set! can-write-command #f)
|
||||
(set! pos-command (- pos-command 1))
|
||||
(set! pos-command-col (+ length-prev-line 2))
|
||||
(loop (paint)))))
|
||||
(if (< pos-result 2)
|
||||
(loop (paint))
|
||||
(let ((length-prev-line
|
||||
(string-length
|
||||
(list-ref text-result (- pos-result 2)))))
|
||||
(begin
|
||||
(set! pos-result (- pos-result 1))
|
||||
(set! pos-result-col (+ length-prev-line 1))
|
||||
(loop (paint)))))))
|
||||
|
||||
((= ch key-down)
|
||||
(if (= active-buffer 1)
|
||||
(let ((last-pos (length text-command)))
|
||||
(if (>= pos-command last-pos)
|
||||
(loop (paint))
|
||||
(let ((length-next-line
|
||||
(string-length
|
||||
(list-ref text-command pos-command))))
|
||||
(begin
|
||||
(set! pos-command-col (+ length-next-line 2))
|
||||
(set! pos-command (+ pos-command 1))
|
||||
(if (= pos-command last-pos)
|
||||
(set! can-write-command #t))
|
||||
(loop (paint))))))
|
||||
(let ((last-pos (length text-result)))
|
||||
(if (>= pos-result last-pos)
|
||||
(loop (paint))
|
||||
(let ((length-next-line
|
||||
(string-length
|
||||
(list-ref text-result pos-result))))
|
||||
(begin
|
||||
(set! pos-result-col (+ length-next-line 1))
|
||||
(set! pos-result (+ pos-result 1))
|
||||
(loop (paint))))))))
|
||||
|
||||
((= ch key-left)
|
||||
(if (= active-buffer 1)
|
||||
(if (<= pos-command-col 2)
|
||||
(loop (paint))
|
||||
(begin
|
||||
(set! pos-command-col (- pos-command-col 1))
|
||||
(loop (paint))))
|
||||
(if (<= pos-result-col 1)
|
||||
(loop (paint))
|
||||
(begin
|
||||
(set! pos-result-col (- pos-result-col 1))
|
||||
(loop (paint))))))
|
||||
|
||||
((= ch key-right)
|
||||
(if (= active-buffer 1)
|
||||
(let ((line-length (string-length
|
||||
(list-ref text-command (- pos-command 1)))))
|
||||
(if (>= pos-command-col (+ line-length 2))
|
||||
(loop (paint))
|
||||
(begin
|
||||
(set! pos-command-col (+ pos-command-col 1))
|
||||
(loop (paint)))))
|
||||
(let ((line-length (string-length
|
||||
(list-ref text-result (- pos-result 1)))))
|
||||
(if (>= pos-result-col (+ line-length 1))
|
||||
(loop (paint))
|
||||
(begin
|
||||
(set! pos-result-col (+ pos-result-col 1))
|
||||
(loop (paint)))))))
|
||||
|
||||
;;Ctrl+b -> Buffer wechseln
|
||||
((= ch 2)
|
||||
(begin
|
||||
(if (= active-buffer 1)
|
||||
(set! active-buffer 2)
|
||||
(set! active-buffer 1))
|
||||
(loop (paint))))
|
||||
|
||||
|
||||
;;Ctrl+a -> Zeilenanfang
|
||||
((= ch 1)
|
||||
(if (= active-buffer 1)
|
||||
(begin
|
||||
(set! command-buffer-pos-x 2)
|
||||
(loop (paint)))))
|
||||
|
||||
;;Ctrl-e -> Zeilenende
|
||||
((= ch 5)
|
||||
(if (= active-buffer 1)
|
||||
(let ((line-length (string-length
|
||||
(list-ref text-command (- pos-command 1)))))
|
||||
(begin
|
||||
(set! command-buffer-pos-x (+ line-length 2))
|
||||
(loop (paint))))))
|
||||
|
||||
(else
|
||||
(if (= active-buffer 1)
|
||||
(if (<= ch 255)
|
||||
(if can-write-command
|
||||
(begin
|
||||
(add-to-command-buffer ch)
|
||||
(loop (paint)))
|
||||
(loop (paint)))
|
||||
(loop (paint)))))))))
|
||||
|
||||
|
||||
;;darstellen und auf Eingabe warten
|
||||
(define paint
|
||||
(lambda ()
|
||||
(begin
|
||||
(init-screen)
|
||||
(cbreak)
|
||||
(let* ((bar1-y 0)
|
||||
(bar1-x 0)
|
||||
(bar1-h 3)
|
||||
(bar1-w (COLS))
|
||||
(bar2-y (round (/ (LINES) 3)))
|
||||
(bar2-x 0)
|
||||
(bar2-h 3)
|
||||
(bar2-w (COLS))
|
||||
(comwin-y 3)
|
||||
(comwin-x 0)
|
||||
(comwin-h (- bar2-y 3))
|
||||
(comwin-w (COLS))
|
||||
(reswin-y (+ bar2-y 3))
|
||||
(reswin-x 0)
|
||||
(reswin-h (- (- (- (LINES) 6) comwin-h) 3))
|
||||
(reswin-w (COLS))
|
||||
(bar3-y (+ reswin-y reswin-h))
|
||||
(bar3-x 0)
|
||||
(bar3-h 3)
|
||||
(bar3-w (COLS)))
|
||||
(let ((bar1 (newwin bar1-h bar1-w bar1-y bar1-x))
|
||||
(bar2 (newwin bar2-h bar2-w bar2-y bar2-x))
|
||||
(command-win (newwin comwin-h comwin-w comwin-y comwin-x))
|
||||
(result-win (newwin reswin-h reswin-w reswin-y reswin-x))
|
||||
(bar3 (newwin bar3-h bar3-w bar3-y bar3-x)))
|
||||
(box bar1 (ascii->char 0) (ascii->char 0))
|
||||
(mvwaddstr bar1 1 1 "Command")
|
||||
(wrefresh bar1)
|
||||
(box bar2 (ascii->char 0) (ascii->char 0))
|
||||
(mvwaddstr bar2 1 1 "Result")
|
||||
(wrefresh bar2)
|
||||
(box command-win (ascii->char 0) (ascii->char 0))
|
||||
(set! command-lines (- comwin-h 2))
|
||||
(set! command-cols (- comwin-w 3))
|
||||
(print-command-buffer command-win)
|
||||
(wrefresh command-win)
|
||||
(box result-win (ascii->char 0) (ascii->char 0))
|
||||
(set! result-lines (- reswin-h 2))
|
||||
(set! result-cols (- reswin-w 3))
|
||||
(print-result-buffer result-win)
|
||||
(wrefresh result-win)
|
||||
(box bar3 (ascii->char 0) (ascii->char 0))
|
||||
(wattron bar3 (A-REVERSE))
|
||||
(mvwaddstr bar3 1 1 "F1:Exit | Ctrl+b:Switch-Buffer")
|
||||
(wstandend bar3)
|
||||
(wrefresh bar3)
|
||||
(cursor-right-pos command-win result-win comwin-h reswin-h)
|
||||
(noecho)
|
||||
(keypad bar1 #t)
|
||||
(let ((ch (wgetch bar1)))
|
||||
(wclear bar1)
|
||||
(wclear bar2)
|
||||
(wclear command-win)
|
||||
(wclear result-win)
|
||||
(wclear bar3)
|
||||
(clear)
|
||||
(endwin)
|
||||
(echo)
|
||||
ch
|
||||
))))))
|
||||
|
||||
;;Eingabe wurde durch Benutzer bestätigt -> Kommando ausfuehren
|
||||
(define execute-command
|
||||
(lambda ()
|
||||
(let* ((command (list-ref text-command (- (length text-command) 1)))
|
||||
(command-port (open-input-string command))
|
||||
(tmp-env (scheme-report-environment 5))
|
||||
(handler (lambda (condition more)
|
||||
(cons 'Error: condition)))
|
||||
(result (with-fatal-error-handler
|
||||
handler
|
||||
(eval (read command-port) tmp-env)))
|
||||
(result-port (open-output-string)))
|
||||
(begin
|
||||
(write result result-port)
|
||||
(let ((result-string (get-output-string result-port)))
|
||||
(begin
|
||||
(layout-result command result-string result-cols)
|
||||
(set! text-command (append text-command (list "")))
|
||||
(scroll-command-buffer)))))))
|
||||
|
||||
;;Nach einer Eingabe kann es sein, dass die aktive Buffer_Zeile verschoben
|
||||
;;werden muss.
|
||||
(define scroll-command-buffer
|
||||
(lambda ()
|
||||
(begin
|
||||
(set! pos-command (+ pos-command 1))
|
||||
(set! pos-command-col 2))))
|
||||
|
||||
|
||||
;;Der Benutzer muss sich darum kümmern, dass das Ergebnis sinnvoll
|
||||
;;dargestellt wird.
|
||||
(define layout-result
|
||||
(lambda (command result width)
|
||||
;;standard (else -> keine spezielle Darstellung vorgesehen)
|
||||
(layout-result-standard result width)))
|
||||
; (begin
|
||||
; (let ((com (if (> (string-length command) (- width 22))
|
||||
; (string-append (substring command 0 (- width 22)) "...")
|
||||
; command)))
|
||||
; (set! text-result (cons (string-append "command unknown: " com) '()))
|
||||
; (set! pos-result-col (+ 18 (string-length com)))
|
||||
; (set! pos-result 1)))))
|
||||
|
||||
|
||||
|
||||
;;Ein Character zur letzten Zeile des Command-Buffers hinzufügen
|
||||
(define add-to-command-buffer
|
||||
(lambda (ch)
|
||||
(let* ((last-pos (- (length text-command) 1))
|
||||
(old-last-el (list-ref text-command last-pos))
|
||||
(old-rest (sublist text-command 0 last-pos))
|
||||
(before-ch (substring old-last-el 0
|
||||
(max 0 (- pos-command-col 2))))
|
||||
(after-ch (substring old-last-el
|
||||
(max 0 (- pos-command-col 2))
|
||||
(string-length old-last-el)))
|
||||
(new-last-el (string-append before-ch
|
||||
(string (ascii->char ch))
|
||||
after-ch)))
|
||||
(set! text-command (append old-rest (list new-last-el)))
|
||||
(set! pos-command-col (+ pos-command-col 1)))))
|
||||
|
||||
;;Ein Character aus der letzten Zeile entfernen (backspace)
|
||||
(define remove-from-command-buffer
|
||||
(lambda ()
|
||||
(let* ((last-pos (- (length text-command) 1))
|
||||
(old-last-el (list-ref text-command last-pos))
|
||||
(old-rest (sublist text-command 0 last-pos))
|
||||
(before-ch (substring old-last-el 0
|
||||
(max 0 (- pos-command-col 3))))
|
||||
(after-ch (if (= pos-command-col
|
||||
(+ (string-length old-last-el) 2))
|
||||
""
|
||||
(substring old-last-el
|
||||
(max 0 (- pos-command-col 2))
|
||||
(string-length old-last-el))))
|
||||
(new-last-el (if (= pos-command-col
|
||||
(+ (string-length old-last-el) 2))
|
||||
before-ch
|
||||
(string-append before-ch after-ch))))
|
||||
(set! text-command (append old-rest (list new-last-el))))))
|
||||
|
||||
|
||||
|
||||
;;Es wird der sichtbare Teil der bisherigen Eingaben in den Command-
|
||||
;;Buffer angezeigt.
|
||||
(define print-command-buffer
|
||||
(lambda (comwin)
|
||||
(let ((lines (get-right-command-lines)))
|
||||
(let loop ((pos 1))
|
||||
(if (> pos command-lines)
|
||||
values
|
||||
(let ((line (list-ref lines (- pos 1))))
|
||||
(begin
|
||||
(mvwaddstr comwin pos 1 line)
|
||||
(wrefresh comwin)
|
||||
(loop (+ pos 1)))))))))
|
||||
|
||||
|
||||
;;Anzeigen des sichtbaren Teils des Result-Buffers
|
||||
(define print-result-buffer
|
||||
(lambda (reswin)
|
||||
(let ((lines (get-right-result-lines)))
|
||||
(let loop ((pos 1))
|
||||
(if (> pos result-lines)
|
||||
values
|
||||
(let ((line (list-ref lines (- pos 1))))
|
||||
(begin
|
||||
(mvwaddstr reswin pos 1 line)
|
||||
(wrefresh reswin)
|
||||
(loop (+ pos 1)))))))))
|
||||
|
||||
|
||||
;;Es werden die anzuzeigenden Zeilen erzeugt.
|
||||
;;nötig, damit auch Befehle über mehrere Zeilen möglich sind:
|
||||
(define get-right-command-lines
|
||||
(lambda ()
|
||||
(let* ((all-lines-seperated (all-commands-seperated text-command))
|
||||
(num-all-lines (length all-lines-seperated)))
|
||||
(if (>= pos-command-fin-ln command-lines)
|
||||
;;aktive Zeile ist die unterste
|
||||
(sublist all-lines-seperated
|
||||
(- pos-command-fin-ln command-lines)
|
||||
command-lines)
|
||||
(if (<= num-all-lines command-lines)
|
||||
;;noch keine ganze Seite im Buffer
|
||||
(prepare-lines all-lines-seperated
|
||||
command-lines (- pos-command-fin-ln 1))
|
||||
;;scrollen auf der ersten Seite
|
||||
(sublist all-lines-seperated 0 command-lines))))))
|
||||
|
||||
;;anzuzeigende Zeilen im Result-Buffer
|
||||
(define get-right-result-lines
|
||||
(lambda ()
|
||||
(prepare-lines text-result result-lines pos-result)))
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
;;alle Statements zerlegen
|
||||
(define all-commands-seperated
|
||||
(lambda (commands)
|
||||
(let loop ((act-pos 1)
|
||||
(new '()))
|
||||
(begin
|
||||
(if (= act-pos pos-command)
|
||||
(let* ((length-new (length new))
|
||||
(first-el-old (list-ref commands (- act-pos 1)))
|
||||
(seperated-act (seperate-line-com
|
||||
first-el-old command-cols))
|
||||
(length-act (length seperated-act)))
|
||||
(set! pos-command-fin-ln (+ length-new length-act))))
|
||||
|
||||
(if (> act-pos (length commands))
|
||||
(reverse new)
|
||||
(let* ((first-el-old (list-ref commands (- act-pos 1)))
|
||||
(seperated-fst-el-old
|
||||
(seperate-line-com first-el-old command-cols)))
|
||||
(loop (+ act-pos 1) (append seperated-fst-el-old new))))))))
|
||||
|
||||
|
||||
;;Ein Statement wird in Stücke zerlegt, so dass dann jedes Stück in eine
|
||||
;;Zeile passt.
|
||||
(define seperate-line-com
|
||||
(lambda (line width)
|
||||
(let loop ((new '())
|
||||
(old line))
|
||||
(if (> width (string-length old))
|
||||
(if (= 0 (string-length old))
|
||||
(if (equal? new '())
|
||||
(add-prompts '(""))
|
||||
(add-prompts new))
|
||||
;new
|
||||
(add-prompts (append (list old) new)))
|
||||
;(append (list old) new))
|
||||
(let ((next-line (substring old 0 width))
|
||||
(rest-old (substring old width (string-length old))))
|
||||
(loop (cons next-line new) rest-old))))))
|
||||
|
||||
|
||||
;;> hinzufügen
|
||||
(define add-prompts
|
||||
(lambda (l)
|
||||
(let* ((lr (reverse l))
|
||||
(old-first-el (list-ref lr 0))
|
||||
(new-first-el (string-append ">" old-first-el))
|
||||
(old-rest (list-tail lr 1)))
|
||||
(let loop ((old old-rest)
|
||||
(new (list new-first-el)))
|
||||
(if (> (length old) 0)
|
||||
(let* ((old-first-el (list-ref old 0))
|
||||
(new-first-el (string-append " " old-first-el)))
|
||||
(loop (list-tail old 1) (append new (list new-first-el))))
|
||||
(reverse new))))))
|
||||
|
||||
|
||||
|
||||
;;Cursor an die richtige Stelle bewegen:
|
||||
(define cursor-right-pos
|
||||
(lambda (comwin reswin comwin-h reswin-h)
|
||||
(begin
|
||||
(compute-y-x)
|
||||
(if (= active-buffer 1)
|
||||
(begin
|
||||
(wmove comwin command-buffer-pos-y command-buffer-pos-x)
|
||||
(wrefresh comwin))
|
||||
(begin
|
||||
(wmove reswin result-buffer-pos-y result-buffer-pos-x)
|
||||
(wrefresh reswin))))))
|
||||
|
||||
|
||||
;;pos-y und pos-x berechnen
|
||||
(define compute-y-x
|
||||
(lambda ()
|
||||
(if (= active-buffer 1)
|
||||
(begin
|
||||
;;zuerst mal y
|
||||
(if (>= pos-command-fin-ln command-lines)
|
||||
;;unterste Zeile
|
||||
(set! command-buffer-pos-y command-lines)
|
||||
;;sonst
|
||||
(set! command-buffer-pos-y pos-command-fin-ln))
|
||||
;;jetzt x
|
||||
(let ((posx (modulo pos-command-col command-cols)))
|
||||
(set! command-buffer-pos-x posx)))
|
||||
(begin
|
||||
;;zuerst y
|
||||
(if (>= pos-result result-lines)
|
||||
(set! result-buffer-pos-y result-lines)
|
||||
(set! result-buffer-pos-y pos-result))
|
||||
(set! result-buffer-pos-x pos-result-col)))))
|
||||
|
||||
|
||||
;;Es wird in einer Liste der zu druckende Berecih ausgewählt:
|
||||
(define prepare-lines
|
||||
(lambda (l height pos)
|
||||
(if (< (length l) height)
|
||||
;; Liste zu kurz -> ""s hinzufügen
|
||||
(let loop ((tmp-list l))
|
||||
(if (= height (length tmp-list))
|
||||
tmp-list
|
||||
(loop (append tmp-list (list "")))))
|
||||
;; Teilliste holen
|
||||
(if (< pos height)
|
||||
;;pos nicht ganz unten
|
||||
(sublist l 0 height)
|
||||
;;standard-Fall
|
||||
(sublist l (- pos height) height)))))
|
||||
|
||||
;;Teilliste
|
||||
(define sublist
|
||||
(lambda (l pos k)
|
||||
(let ((tmp (list-tail l pos)))
|
||||
(reverse (list-tail (reverse tmp)
|
||||
(- (length tmp) k))))))
|
||||
|
||||
;;*************************************************************************
|
||||
;;Die folgenden Funktionen sollten später in eine eigene Datei kommen.
|
||||
;;Sie sind abhängig vom jeweiligen Befehl.
|
||||
|
||||
;;Im Standardfall wird einfach als Ergebnis die Rückgabe der scsh ausgegeben.
|
||||
(define layout-result-standard
|
||||
(lambda (result width)
|
||||
(set! text-result (reverse (seperate-line result width)))))
|
||||
|
||||
;;nützliche Hilfsfunktionen:
|
||||
|
||||
;;Ein Statement wird in Stücke zerlegt, so dass dann jedes Stück in eine
|
||||
;;Zeile passt.
|
||||
(define seperate-line
|
||||
(lambda (line width)
|
||||
(let loop ((new '())
|
||||
(old line))
|
||||
(if (> width (string-length old))
|
||||
(if (= 0 (string-length old))
|
||||
(if (equal? new '())
|
||||
'("")
|
||||
new)
|
||||
;new
|
||||
(append (list old) new))
|
||||
;(append (list old) new))
|
||||
(let ((next-line (substring old 0 width))
|
||||
(rest-old (substring old width (string-length old))))
|
||||
(loop (cons next-line new) rest-old))))))
|
||||
|
||||
|
||||
(define (with-fatal-error-handler* handler thunk)
|
||||
(call-with-current-continuation
|
||||
(lambda (accept)
|
||||
((call-with-current-continuation
|
||||
(lambda (k)
|
||||
(with-handler (lambda (condition more)
|
||||
(if (error? condition)
|
||||
(call-with-current-continuation
|
||||
(lambda (decline)
|
||||
(k (lambda () (handler condition decline))))))
|
||||
(more)) ; Keep looking for a handler.
|
||||
(lambda () (call-with-values thunk accept)))))))))
|
||||
|
||||
(define-syntax with-fatal-error-handler
|
||||
(syntax-rules ()
|
||||
((with-fatal-error-handler handler body ...)
|
||||
(with-fatal-error-handler* handler
|
||||
(lambda () body ...)))))
|
||||
|
||||
(run)
|
||||
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
(define-interface nuit-interface
|
||||
(export run))
|
||||
|
||||
(define-structure nuit nuit-interface
|
||||
(open scheme-with-scsh
|
||||
external-calls
|
||||
define-record-types
|
||||
conditions
|
||||
signals
|
||||
handle
|
||||
ncurses
|
||||
srfi-6)
|
||||
(files nuit-engine
|
||||
handle-fatal-error))
|
||||
Loading…
Reference in New Issue