1072 lines
31 KiB
Scheme
1072 lines
31 KiB
Scheme
;; ,load /home/demattia/studium/studienarbeit/scsh-nuit/scheme/nuit-engine.scm
|
|
|
|
(define-syntax when
|
|
(syntax-rules ()
|
|
((_ ?test ?do-this ...)
|
|
(if ?test
|
|
(begin ?do-this ... (values))
|
|
(values)))))
|
|
|
|
(define (with-lock lock thunk)
|
|
(obtain-lock lock)
|
|
(let ((val (thunk)))
|
|
(release-lock lock)
|
|
val))
|
|
|
|
;;This is the "heart" of NUIT.
|
|
;;In a central loop the program waits for input (with wgetch).
|
|
;;In the upper buffer simply the functionalities of scsh-ncurses:
|
|
;;input-buffer are used.
|
|
;;The lower window is meant to be used more flexible. Depending on
|
|
;;the active command the key-inputs are routed to the correct receiver,
|
|
;;where one can specify how to react.
|
|
|
|
;;*************************************************************************
|
|
;;State
|
|
|
|
(define-record-type app-window :app-window
|
|
(make-app-window x y width height curses-win)
|
|
app-window?
|
|
(x app-window-x)
|
|
(y app-window-y)
|
|
(width app-window-width)
|
|
(height app-window-height)
|
|
(curses-win app-window-curses-win set-app-window-curses-win!))
|
|
|
|
(define-record-discloser :app-window
|
|
(lambda (rec)
|
|
`(app-window
|
|
(x ,(app-window-x rec)) (y ,(app-window-y rec))
|
|
(w ,(app-window-width rec)) (h ,(app-window-height rec)))))
|
|
|
|
(define bar-1 #f)
|
|
(define active-command-window #f)
|
|
|
|
(define command-frame-window #f)
|
|
(define command-window #f)
|
|
|
|
(define result-window #f)
|
|
(define result-frame-window #f)
|
|
|
|
(define executable-completions-lock (make-lock))
|
|
(define executable-completions #f)
|
|
|
|
(define key-control-x 24)
|
|
(define key-o 111)
|
|
(define key-tab 9)
|
|
|
|
;;state of the upper window (Command-Window)
|
|
(define command-buffer
|
|
(make-buffer '("Welcome to the scsh-ncurses-ui!" "")
|
|
2 2 2 1 1
|
|
0 0
|
|
#t 1))
|
|
|
|
;;state of the lower window (Result-Window)
|
|
;;----------------------------
|
|
;;Text
|
|
|
|
(define result-buffer
|
|
(make-result-buffer 0 0 0 0
|
|
#f #f ; set in INIT-WINDOWS
|
|
'() '()))
|
|
|
|
;;miscelaneous state
|
|
;;-------------------
|
|
|
|
(define *focus-buffer* 'command-buffer)
|
|
|
|
(define (focus-on-command-buffer?)
|
|
(eq? *focus-buffer* 'command-buffer))
|
|
|
|
(define (focus-command-buffer!)
|
|
(set! *focus-buffer* 'command-buffer))
|
|
|
|
(define (focus-on-result-buffer?)
|
|
(eq? *focus-buffer* 'result-buffer))
|
|
|
|
(define (focus-result-buffer!)
|
|
(set! *focus-buffer* 'result-buffer))
|
|
|
|
;; mode of the command buffer
|
|
(define *command-buffer-mode* 'scheme)
|
|
|
|
(define (command-buffer-in-scheme-mode?)
|
|
(eq? *command-buffer-mode* 'scheme))
|
|
|
|
(define (command-buffer-in-command-mode?)
|
|
(eq? *command-buffer-mode* 'command))
|
|
|
|
(define (enter-scheme-mode!)
|
|
(set! *command-buffer-mode* 'scheme))
|
|
|
|
(define (enter-command-mode!)
|
|
(set! *command-buffer-mode* 'command))
|
|
|
|
;; History
|
|
|
|
(define history-pos 0)
|
|
(define the-history (make-empty-history))
|
|
|
|
(define (history) the-history)
|
|
|
|
(define *current-history-item* #f)
|
|
|
|
(define (current-history-item)
|
|
*current-history-item*)
|
|
|
|
(define-record-type history-entry :history-entry
|
|
(make-history-entry command args result plugin)
|
|
history-entry?
|
|
(command history-entry-command)
|
|
(args history-entry-args)
|
|
(result history-entry-result set-history-entry-result!)
|
|
(plugin history-entry-plugin))
|
|
|
|
(define (current-history-entry-selector-maker selector)
|
|
(lambda ()
|
|
(cond
|
|
((current-history-item)
|
|
=> (lambda (entry)
|
|
(selector (entry-data entry))))
|
|
(else #f))))
|
|
|
|
(define active-command
|
|
(current-history-entry-selector-maker history-entry-command))
|
|
|
|
(define active-command-arguments
|
|
(current-history-entry-selector-maker history-entry-args))
|
|
|
|
(define current-result
|
|
(current-history-entry-selector-maker history-entry-result))
|
|
|
|
(define (update-current-result! new-value)
|
|
(cond
|
|
((current-history-item)
|
|
=> (lambda (entry)
|
|
(set-history-entry-result! (entry-data entry) new-value)))
|
|
(else (values))))
|
|
|
|
(define (append-to-history! history-entry)
|
|
(append-history-item! the-history history-entry)
|
|
(set! *current-history-item*
|
|
(history-last-entry the-history)))
|
|
|
|
;; one step back in the history
|
|
(define (history-back!)
|
|
(cond
|
|
((and (current-history-item)
|
|
(history-prev-entry (current-history-item)))
|
|
=> (lambda (prev)
|
|
(set! *current-history-item* prev)))
|
|
(else (values))))
|
|
|
|
;; one step forward
|
|
(define (history-forward!)
|
|
(cond
|
|
((and *current-history-item*
|
|
(history-next-entry *current-history-item*))
|
|
=> (lambda (next)
|
|
(set! *current-history-item* next)))
|
|
(else (values))))
|
|
|
|
;;active keyboard-interrupt:
|
|
;;after each input this is set to #f.
|
|
;;If a keyboard-interrupt occurs this can be checked by looking-up this box
|
|
(define active-keyboard-interrupt #f)
|
|
|
|
|
|
;;The "user" (who extends the functionality of NUIT) has to inform NUIT
|
|
;;about which function is meant to be the receiver, when a certain
|
|
;;command is active
|
|
|
|
;;*************************************************************************
|
|
;;Actions
|
|
|
|
;;start the whole thing
|
|
(define (nuit)
|
|
(let ((tty-name (init-tty-debug-output!)))
|
|
(display "Debug messages will be on ")
|
|
(display tty-name)
|
|
(newline))
|
|
(with-inspecting-handler
|
|
8888
|
|
(lambda (condition)
|
|
(with-current-output-port*
|
|
(error-output-port)
|
|
(lambda ()
|
|
(display "starting remote handler for condition")
|
|
(display condition)
|
|
(newline)
|
|
(display "Please connect to port 8888")
|
|
(newline)
|
|
#t)))
|
|
run))
|
|
|
|
(define (toggle-buffer-focus)
|
|
(cond
|
|
((focus-on-command-buffer?)
|
|
(focus-result-buffer!)
|
|
(refresh-result-window))
|
|
(else
|
|
(focus-command-buffer!)
|
|
(move-cursor command-buffer result-buffer)
|
|
(refresh-command-window))))
|
|
|
|
(define (toggle-command/scheme-mode)
|
|
(cond
|
|
((command-buffer-in-command-mode?)
|
|
(enter-scheme-mode!))
|
|
((command-buffer-in-scheme-mode?)
|
|
(enter-command-mode!)))
|
|
(paint-command-frame-window)
|
|
(paint-command-window-contents)
|
|
(move-cursor command-buffer result-buffer)
|
|
(refresh-command-window))
|
|
|
|
(define (handle-return-key)
|
|
(let ((command-line (last (buffer-text command-buffer))))
|
|
(cond
|
|
((string=? command-line "")
|
|
(values))
|
|
((command-buffer-in-scheme-mode?)
|
|
(eval-command-in-scheme-mode command-line))
|
|
((command-buffer-in-command-mode?)
|
|
(eval-command-in-command-mode command-line)))))
|
|
|
|
(define (find-command-plugin command)
|
|
(or (find (lambda (p)
|
|
(string=? (command-plugin-command p) command))
|
|
(command-plugin-list))
|
|
standard-command-plugin))
|
|
|
|
(define (eval-command-in-command-mode command-line)
|
|
(let* ((tokens (split-command-line command-line))
|
|
(command (car tokens))
|
|
(args (cdr tokens))
|
|
(command-plugin (find-command-plugin command)))
|
|
(call-with-values
|
|
(lambda ()
|
|
(find/init-plugin-for-result
|
|
(with-errno-handler
|
|
((errno data)
|
|
(else data))
|
|
((command-plugin-evaluater command-plugin) command args))))
|
|
(lambda (result plugin)
|
|
(let ((new-entry
|
|
(make-history-entry command args
|
|
result plugin)))
|
|
;; FIXME, use insert here
|
|
(append-to-history! new-entry)
|
|
(buffer-text-append-new-line! command-buffer)
|
|
(paint-result/command-buffer new-entry))))))
|
|
|
|
(define (eval-command-in-scheme-mode command-line)
|
|
(call-with-values
|
|
(lambda ()
|
|
(find/init-plugin-for-result
|
|
(eval-expression command-line)))
|
|
(lambda (result plugin)
|
|
(let* ((tokens (split-command-line command-line))
|
|
(command (car tokens))
|
|
(args (cdr tokens))
|
|
(new-entry
|
|
(make-history-entry command args
|
|
result plugin)))
|
|
;; FIXME, use insert here
|
|
(append-to-history! new-entry)
|
|
(buffer-text-append-new-line! command-buffer)
|
|
(paint-result/command-buffer new-entry)))))
|
|
|
|
(define split-command-line string-tokenize)
|
|
|
|
;; handle input
|
|
(define (run)
|
|
|
|
(init-windows!)
|
|
(init-executables-completion-set!)
|
|
|
|
'(set-interrupt-handler interrupt/keyboard
|
|
(lambda a
|
|
(set! active-keyboard-interrupt a)))
|
|
|
|
;;Loop
|
|
(paint)
|
|
(let loop ((ch (wait-for-input)) (c-x-pressed? #f)
|
|
(completion-selector #f))
|
|
|
|
(debug-message "loop: " ch "|" c-x-pressed? "|" completion-selector)
|
|
(cond
|
|
|
|
;; Ctrl-x -> wait for next input
|
|
((= ch key-control-x)
|
|
(loop (wait-for-input) #t completion-selector))
|
|
|
|
((and (focus-on-result-buffer?) completion-selector)
|
|
(let ((new-selector (completion-selector ch)))
|
|
(loop (wait-for-input) c-x-pressed? new-selector)))
|
|
|
|
;; tab pressed twice, select completion using select-list
|
|
((and (focus-on-command-buffer?)
|
|
completion-selector
|
|
(= ch key-tab))
|
|
(focus-result-buffer!)
|
|
(loop (wait-for-input) #f completion-selector))
|
|
|
|
;; tab is pressed in the first place, offer completions
|
|
((and (focus-on-command-buffer?)
|
|
(= ch key-tab))
|
|
(let ((maybe-selector
|
|
(offer-completions (last (buffer-text command-buffer)))))
|
|
(loop (wait-for-input) #f maybe-selector)))
|
|
|
|
;; F7 toggle scheme-mode / command-mode (FIXME: find a better key)
|
|
((= ch key-f7)
|
|
(toggle-command/scheme-mode)
|
|
(loop (wait-for-input) #f #f))
|
|
|
|
((= ch key-f8)
|
|
(show-shell-screen)
|
|
(paint)
|
|
(loop (wait-for-input) #f #f))
|
|
|
|
;; C-x o --- toggle buffer focus
|
|
((and c-x-pressed? (= ch key-o))
|
|
(toggle-buffer-focus)
|
|
(loop (wait-for-input) #f #f))
|
|
|
|
;; C-x p --- insert selection
|
|
((and c-x-pressed?
|
|
(focus-on-command-buffer?)
|
|
(current-history-item)
|
|
(= ch 112))
|
|
(add-string-to-command-buffer
|
|
(post-message
|
|
(history-entry-plugin (entry-data (current-history-item)))
|
|
(make-selection-message (active-command) (current-result))))
|
|
(loop (wait-for-input) #f #f))
|
|
|
|
((and c-x-pressed? (focus-on-result-buffer?))
|
|
(let ((key-message
|
|
(make-key-pressed-message
|
|
(active-command) (current-result)
|
|
result-buffer
|
|
ch key-control-x)))
|
|
(update-current-result!
|
|
(post-message
|
|
(history-entry-plugin (entry-data (current-history-item)))
|
|
key-message))
|
|
(loop (wait-for-input) #f #f)))
|
|
|
|
;; C-x r --- redo
|
|
((and c-x-pressed? (focus-on-command-buffer?)
|
|
(= ch 114))
|
|
(debug-message "Eric should re-implement redo..."))
|
|
|
|
((= ch key-f1)
|
|
(endwin))
|
|
|
|
((= ch key-f2)
|
|
(paint)
|
|
(loop (wait-for-input) c-x-pressed? #f))
|
|
|
|
;; forward in result history
|
|
((= ch key-npage)
|
|
(history-forward!)
|
|
(when (current-history-item)
|
|
(paint-active-command-window)
|
|
(paint-result-window (entry-data (current-history-item))))
|
|
(refresh-result-window)
|
|
(loop (wait-for-input) c-x-pressed? #f))
|
|
|
|
;; back in result history
|
|
((= ch key-ppage)
|
|
(history-back!)
|
|
(when (current-history-item)
|
|
(paint-active-command-window)
|
|
(paint-result-window (entry-data (current-history-item))))
|
|
(refresh-result-window)
|
|
(loop (wait-for-input) c-x-pressed? #f))
|
|
|
|
((and (focus-on-command-buffer?) (= ch 10))
|
|
(handle-return-key)
|
|
(loop (wait-for-input) c-x-pressed? #f))
|
|
|
|
(else
|
|
(cond
|
|
((focus-on-result-buffer?)
|
|
(when (current-history-item)
|
|
(update-current-result!
|
|
(post-message
|
|
(history-entry-plugin (entry-data (current-history-item)))
|
|
(make-key-pressed-message
|
|
(active-command) (current-result)
|
|
result-buffer
|
|
ch c-x-pressed?)))
|
|
(paint-result-window (entry-data (current-history-item)))
|
|
(move-cursor command-buffer result-buffer)
|
|
(refresh-result-window))
|
|
(loop (wait-for-input) #f #f))
|
|
(else
|
|
(input command-buffer ch)
|
|
(werase (app-window-curses-win command-window))
|
|
(print-command-buffer (app-window-curses-win command-window)
|
|
command-buffer)
|
|
(move-cursor command-buffer result-buffer)
|
|
(refresh-command-window)
|
|
(loop (wait-for-input) c-x-pressed? #f)))))))
|
|
|
|
(define (window-init-curses-win! window)
|
|
(set-app-window-curses-win!
|
|
window
|
|
(newwin (app-window-height window) (app-window-width window)
|
|
(app-window-y window) (app-window-x window))))
|
|
|
|
(define (make-inlying-app-window outer-window)
|
|
(make-app-window (+ (app-window-x outer-window) 1)
|
|
(+ (app-window-y outer-window) 1)
|
|
(- (app-window-width outer-window) 2)
|
|
(- (app-window-height outer-window) 2)
|
|
#f))
|
|
|
|
(define (init-windows!)
|
|
(init-screen)
|
|
(set! bar-1
|
|
(make-app-window 1 1
|
|
(- (COLS) 2) 2
|
|
#f))
|
|
(set! active-command-window
|
|
(make-app-window 1 (+ (round (/ (LINES) 3)) 2)
|
|
(- (COLS) 2) 3
|
|
#f))
|
|
(set! command-frame-window
|
|
(make-app-window 1 2
|
|
(- (COLS) 2) (- (app-window-y active-command-window) 2)
|
|
#f))
|
|
(set! command-window
|
|
(make-inlying-app-window command-frame-window))
|
|
(set! result-frame-window
|
|
(make-app-window 1 (+ (app-window-y active-command-window) 3)
|
|
(- (COLS) 2)
|
|
(- (- (LINES) 6) (app-window-height command-frame-window))
|
|
#f))
|
|
(set! result-window
|
|
(make-inlying-app-window result-frame-window))
|
|
|
|
(let ((all-windows (list bar-1 active-command-window
|
|
command-frame-window command-window
|
|
result-frame-window result-window)))
|
|
(for-each window-init-curses-win! all-windows)
|
|
|
|
(set-result-buffer-num-lines!
|
|
result-buffer (- (app-window-height result-window) 2))
|
|
(set-result-buffer-num-cols!
|
|
result-buffer (- (app-window-width result-window) 3))
|
|
|
|
(debug-message "init-windows!: bar-1 " bar-1
|
|
" active-command-window " active-command-window
|
|
" command-frame-window " command-frame-window
|
|
" command-window " command-window
|
|
" result-frame-window " result-frame-window
|
|
" result-window " result-window)
|
|
(for-each wclear
|
|
(map app-window-curses-win all-windows))
|
|
(clear)))
|
|
|
|
(define (get-path-list)
|
|
(cond
|
|
((getenv "PATH")
|
|
=> (lambda (str)
|
|
(string-tokenize
|
|
str (char-set-difference char-set:full (char-set #\:)))))
|
|
(else
|
|
'("/usr/bin" "/bin" "/usr/sbin" "/sbin"))))
|
|
|
|
(define (init-executables-completion-set!)
|
|
(spawn
|
|
(lambda ()
|
|
(with-lock executable-completions-lock
|
|
(lambda()
|
|
(set! executable-completions
|
|
(make-completion-set-for-executables (get-path-list)))
|
|
(debug-message "finished scanning executable-completions-set"))))))
|
|
|
|
(define (paint-bar-1)
|
|
(mvwaddstr (app-window-curses-win bar-1) 0 1 "SCSH-NUIT")
|
|
(wrefresh (app-window-curses-win bar-1)))
|
|
|
|
(define (paint-command-buffer-mode-indicator)
|
|
(let ((mode-string
|
|
(string-append
|
|
"[ "
|
|
(if (command-buffer-in-command-mode?)
|
|
"Command"
|
|
"Scheme")
|
|
" ]")))
|
|
(mvwaddstr
|
|
(app-window-curses-win command-frame-window)
|
|
0
|
|
(- (- (app-window-width command-frame-window)
|
|
(string-length mode-string))
|
|
2)
|
|
mode-string)))
|
|
|
|
(define (paint-command-frame-window)
|
|
(box (app-window-curses-win command-frame-window)
|
|
(ascii->char 0) (ascii->char 0))
|
|
(paint-command-buffer-mode-indicator)
|
|
(wrefresh (app-window-curses-win command-frame-window)))
|
|
|
|
(define (paint-command-window-contents)
|
|
(set-buffer-num-lines! command-buffer
|
|
(- (app-window-height command-window) 2))
|
|
(set-buffer-num-cols! command-buffer
|
|
(- (app-window-width command-window) 3))
|
|
(werase (app-window-curses-win command-window))
|
|
(print-command-buffer (app-window-curses-win command-window)
|
|
command-buffer))
|
|
|
|
(define (refresh-command-window)
|
|
(wrefresh (app-window-curses-win command-window)))
|
|
|
|
(define (paint-result-frame-window)
|
|
(let ((win (app-window-curses-win result-frame-window)))
|
|
(wclear win)
|
|
(box win (ascii->char 0) (ascii->char 0))
|
|
(wrefresh win)))
|
|
|
|
(define (paint-result-window entry)
|
|
(wclear (app-window-curses-win result-window))
|
|
(paint-result-buffer
|
|
(post-message
|
|
(history-entry-plugin entry)
|
|
(make-print-message (history-entry-command entry)
|
|
(history-entry-result entry)
|
|
(buffer-num-cols command-buffer)))))
|
|
|
|
(define (refresh-result-window)
|
|
(wrefresh (app-window-curses-win result-window)))
|
|
|
|
(define (paint-result/command-buffer history-entry)
|
|
(paint-result-window history-entry)
|
|
(paint-active-command-window)
|
|
(scroll-command-buffer)
|
|
(paint-command-window-contents)
|
|
(move-cursor command-buffer result-buffer)
|
|
(refresh-result-window)
|
|
(refresh-command-window))
|
|
|
|
(define (paint)
|
|
(paint-bar-1)
|
|
(paint-command-frame-window)
|
|
(paint-command-window-contents)
|
|
(paint-active-command-window)
|
|
(paint-result-frame-window)
|
|
;(paint-result-window)
|
|
(move-cursor command-buffer result-buffer)
|
|
(refresh-command-window)
|
|
(refresh-result-window))
|
|
|
|
(define (wait-for-input)
|
|
(noecho)
|
|
(keypad (app-window-curses-win bar-1) #t)
|
|
(set! active-keyboard-interrupt #f)
|
|
(let ((ch (wgetch (app-window-curses-win bar-1))))
|
|
(echo)
|
|
ch))
|
|
|
|
(define (find/init-plugin-for-result result)
|
|
(cond
|
|
((determine-plugin-by-type result)
|
|
=> (lambda (plugin)
|
|
(values
|
|
(post-message plugin
|
|
(make-init-with-result-message
|
|
result result-buffer))
|
|
plugin)))
|
|
(else
|
|
(values
|
|
(post-message standard-view-plugin
|
|
(make-init-with-result-message
|
|
result result-buffer))
|
|
standard-view-plugin))))
|
|
|
|
;;Extracts the name of the function and its parameters
|
|
(define extract-com-and-par
|
|
(lambda (com)
|
|
(if (<= (string-length com) 0)
|
|
(cons "" '())
|
|
(if (equal? #\( (string-ref com 0))
|
|
(cons com '())
|
|
(let* ((fst-word (get-next-word com))
|
|
(command (car fst-word))
|
|
(rest (cdr fst-word)))
|
|
(let loop ((param-str rest)
|
|
(param-list '()))
|
|
(let* ((word (get-next-word param-str))
|
|
(param (car word))
|
|
(more (cdr word)))
|
|
(if (equal? "" param)
|
|
(cons command param-list)
|
|
(loop more (append param-list (list param)))))))))))
|
|
|
|
;;gets the next word from a string
|
|
(define (get-next-word str)
|
|
(let loop ((old str)
|
|
(new ""))
|
|
(if (= 0 (string-length old))
|
|
(cons new old)
|
|
(if (char=? #\space (string-ref old 0))
|
|
(if (= 1 (string-length old))
|
|
(cons new "")
|
|
(cons new (substring old 1 (string-length old))))
|
|
(if (char=? #\( (string-ref old 0))
|
|
(let* ((nw (get-next-word-braces
|
|
(substring old 1
|
|
(string-length old))))
|
|
(nw-new (car nw))
|
|
(nw-old (cdr nw)))
|
|
(loop nw-old (string-append new "(" nw-new)))
|
|
(loop (substring old 1 (string-length old))
|
|
(string-append new (string (string-ref old 0)))))))))
|
|
|
|
(define (get-next-word-braces str)
|
|
(let loop ((old str)
|
|
(new ""))
|
|
(if (= 0 (string-length old))
|
|
(cons new old)
|
|
(if (char=? #\( (string-ref old 0))
|
|
(let* ((nw (get-next-word-braces
|
|
(substring old 1
|
|
(string-length old))))
|
|
(nw-new (car nw))
|
|
(nw-old (cdr nw)))
|
|
(loop nw-old (string-append new "(" nw-new)))
|
|
(if (char=? #\) (string-ref old 0))
|
|
(cons (string-append new ")")
|
|
(substring old 1 (string-length old)))
|
|
(loop (substring old 1 (string-length old))
|
|
(string-append new (string (string-ref old 0)))))))))
|
|
|
|
;;scroll buffer after one command was entered
|
|
(define (scroll-command-buffer)
|
|
(set-buffer-pos-line! command-buffer
|
|
(+ (buffer-pos-line command-buffer) 1))
|
|
(set-buffer-pos-col! command-buffer 2))
|
|
|
|
(define (init-evaluation-environment package)
|
|
(let ((structure (reify-structure package)))
|
|
(load-structure structure)
|
|
(rt-structure->environment structure)))
|
|
|
|
(define (read-sexp-from-string string)
|
|
(let ((string-port (open-input-string string)))
|
|
(read string-port)))
|
|
|
|
(define eval-expression
|
|
(let ((env (init-evaluation-environment 'nuit-eval)))
|
|
(lambda (exp)
|
|
(with-fatal-and-capturing-error-handler
|
|
(lambda (condition raw-continuation continuation decline)
|
|
raw-continuation)
|
|
(lambda ()
|
|
(eval (read-sexp-from-string exp) env))))))
|
|
|
|
(define (post-message plugin message)
|
|
(cond
|
|
((view-plugin? plugin)
|
|
((view-plugin-fun plugin) message))
|
|
(else
|
|
(error "don't know how to talk to this plugin type"
|
|
plugin))))
|
|
|
|
(define (determine-plugin-by-type result)
|
|
(find (lambda (r)
|
|
((view-plugin-type-predicate r) result))
|
|
(view-plugin-list)))
|
|
|
|
;;Management of the upper buffer
|
|
;;add a char to the buffer
|
|
(define (add-to-command-buffer ch)
|
|
(let* ((text (buffer-text command-buffer))
|
|
(last-pos (- (length text) 1))
|
|
(old-last-el (list-ref text last-pos))
|
|
(old-rest (sublist text 0 last-pos))
|
|
(before-ch (substring old-last-el 0
|
|
(max 0 (- (buffer-pos-col command-buffer) 2))))
|
|
(after-ch (substring old-last-el
|
|
(max 0 (- (buffer-pos-col command-buffer) 2))
|
|
(string-length old-last-el)))
|
|
(new-last-el (string-append before-ch
|
|
(string (ascii->char ch))
|
|
after-ch)))
|
|
(set-buffer-text! command-buffer
|
|
(append old-rest (list new-last-el)))
|
|
(set-buffer-pos-col! command-buffer
|
|
(+ (buffer-pos-col command-buffer) 1))))
|
|
|
|
;;add a string to the buffer
|
|
(define (add-string-to-command-buffer string)
|
|
(let loop ((str string))
|
|
(if (string=? str "")
|
|
(values)
|
|
(let ((first-ch (string-ref str 0)))
|
|
(add-to-command-buffer (char->ascii first-ch))
|
|
(loop (substring str 1 (string-length str)))))))
|
|
|
|
;;; FIXME: I guess s48 knows a better way to do this (see ,inspect)
|
|
(define (maybe-shorten-string string width)
|
|
(if (> (string-length string) width)
|
|
(string-append (substring string 0 (- width 3))
|
|
"...")
|
|
string))
|
|
|
|
(define (paint-active-command-window)
|
|
(let ((win (app-window-curses-win active-command-window))
|
|
(width (app-window-width active-command-window)))
|
|
(wclear win)
|
|
(box win (ascii->char 0) (ascii->char 0))
|
|
(cond
|
|
((current-history-item)
|
|
=> (lambda (entry)
|
|
(mvwaddstr win 1 2
|
|
(maybe-shorten-string
|
|
(history-entry-command (entry-data entry)) width)))))
|
|
(wrefresh win)))
|
|
|
|
(define (paint-result-buffer paint-proc)
|
|
(debug-message "paint-result-buffer before")
|
|
(paint-proc (app-window-curses-win result-window)
|
|
result-buffer
|
|
(focus-on-result-buffer?))
|
|
(debug-message "paint-result-buffer after"))
|
|
|
|
;;Cursor
|
|
;;move cursor to the corrct position
|
|
(define (move-cursor command-buffer result-buffer)
|
|
(cond
|
|
((focus-on-command-buffer?)
|
|
(cursor-right-pos
|
|
(app-window-curses-win command-window)
|
|
command-buffer))
|
|
(else
|
|
(compute-y-x result-buffer)
|
|
(wmove (app-window-curses-win result-window)
|
|
(result-buffer-y result-buffer)
|
|
(result-buffer-x result-buffer))
|
|
(wrefresh (app-window-curses-win result-window)))))
|
|
|
|
;;compue pos-x and pos-y
|
|
(define (compute-y-x result-buffer)
|
|
(let ((pos-result (result-buffer-line result-buffer))
|
|
(pos-result-col (result-buffer-column result-buffer))
|
|
(result-lines (result-buffer-num-lines result-buffer)))
|
|
(if (>= pos-result result-lines)
|
|
(set-result-buffer-y! result-buffer result-lines)
|
|
(set-result-buffer-y! result-buffer pos-result))
|
|
(set-result-buffer-x! result-buffer pos-result-col)))
|
|
|
|
(define (sublist l pos k)
|
|
(let ((tmp (list-tail l pos)))
|
|
(reverse (list-tail (reverse tmp)
|
|
(- (length tmp) k)))))
|
|
|
|
;;When NUIT is closed the state has to be restored, in order to let the
|
|
;;user start again from scratch
|
|
(define (restore-state)
|
|
(set! history '())
|
|
(set! history-pos 0)
|
|
(set! active-keyboard-interrupt #f))
|
|
|
|
(define (get-param-as-str param-lst)
|
|
(let loop ((lst param-lst)
|
|
(str ""))
|
|
(if (null? lst)
|
|
str
|
|
(loop (cdr lst)
|
|
(string-append str " " (car lst))))))
|
|
|
|
(define (completions->select-list completions num-lines)
|
|
(debug-message "possible completions " completions)
|
|
(make-select-list
|
|
(map (lambda (s) (make-unmarked-element s #f s))
|
|
completions)
|
|
num-lines))
|
|
|
|
(define (command-contains-path? command)
|
|
(or (string-contains command "/")
|
|
(string-contains command "~")
|
|
(string-contains command "..")))
|
|
|
|
(define (files-in-dir file-filter dir)
|
|
(with-cwd dir
|
|
(filter-map
|
|
(lambda (file)
|
|
(and (file-filter file)
|
|
(absolute-file-name file dir)))
|
|
(directory-files))))
|
|
|
|
(define (complete-path path)
|
|
(let ((dir (file-name-directory path)))
|
|
(map (lambda (p)
|
|
(if (string-prefix? "/" p)
|
|
p
|
|
(string-append dir p)))
|
|
(glob (string-append path "*")))))
|
|
|
|
(define (complete-with-filesystem-objects filter partial-name)
|
|
(if (and (file-exists? partial-name) (file-directory? partial-name))
|
|
(files-in-dir filter partial-name)
|
|
(complete-path partial-name)))
|
|
|
|
(define (complete-executables/path partial-name)
|
|
(complete-with-filesystem-objects
|
|
(lambda (file)
|
|
(or (file-executable? file) (file-directory? file)))
|
|
partial-name))
|
|
|
|
(define (complete-files/path partial-name)
|
|
(complete-with-filesystem-objects
|
|
(lambda (file) #t) partial-name))
|
|
|
|
(define (command-mode-completer command prefix args args-pos)
|
|
(debug-message "command-mode-completer" prefix "|" args "|" args-pos)
|
|
(cond
|
|
((command-contains-path? prefix)
|
|
;; #### FIXME ignore errors here?
|
|
((if (zero? args-pos)
|
|
complete-executables/path
|
|
complete-files/path)
|
|
(expand-file-name prefix (cwd))))
|
|
(else
|
|
(append
|
|
(completions-for (command-completions) prefix)
|
|
(with-lock executable-completions-lock
|
|
(lambda ()
|
|
(completions-for-executables executable-completions prefix)))))))
|
|
|
|
(define (assemble-line-with-completion command arg arg-pos completion)
|
|
(debug-message "assemble-line-with-completion "
|
|
command "," arg "," arg-pos "," completion)
|
|
(let ((string-append* (lambda (s t)
|
|
(if (string=? s "")
|
|
t
|
|
(string-append s " " t)))))
|
|
(let lp ((tokens (cons command arg))
|
|
(arg-count 0)
|
|
(cursor-pos 0)
|
|
(line ""))
|
|
(cond
|
|
((null? tokens)
|
|
(values line (+ 2 cursor-pos)))
|
|
((= arg-count arg-pos)
|
|
(lp (cdr tokens)
|
|
(+ arg-count 1)
|
|
(+ cursor-pos (string-length completion))
|
|
(string-append* line completion)))
|
|
(else
|
|
(lp (cdr tokens)
|
|
(+ arg-count 1)
|
|
(+ 1 (+ cursor-pos (string-length (car tokens))))
|
|
(string-append* line (car tokens))))))))
|
|
|
|
(define (display-completed-line line cursor-pos)
|
|
(debug-message "display-completed-line " line "," cursor-pos)
|
|
(set-buffer-pos-col! command-buffer cursor-pos)
|
|
(set-buffer-text! command-buffer
|
|
(append
|
|
(drop-right (buffer-text command-buffer) 1)
|
|
(list line)))
|
|
(wclrtoeol (app-window-curses-win command-window))
|
|
(print-command-buffer (app-window-curses-win command-window)
|
|
command-buffer)
|
|
(move-cursor command-buffer result-buffer)
|
|
(refresh-command-window))
|
|
|
|
(define (paint-completion-select-list select-list command)
|
|
(let ((win (app-window-curses-win result-window)))
|
|
(wclear win)
|
|
(wattron win (A-BOLD))
|
|
(mvwaddstr win 0 0
|
|
(string-append "Possible completions for " command))
|
|
(wattrset win (A-NORMAL))
|
|
(paint-result-buffer (paint-selection-list-at select-list 0 2))
|
|
(refresh-result-window)))
|
|
|
|
;; #### implement me
|
|
(define (completer-function-for-command command)
|
|
#f)
|
|
|
|
(define (call-completer command args prefix arg-pos)
|
|
(cond
|
|
((= 0 arg-pos)
|
|
(command-mode-completer command prefix args arg-pos))
|
|
((completer-function-for-command command)
|
|
=> (lambda (completer)
|
|
(completer command prefix args arg-pos)))
|
|
(else
|
|
(command-mode-completer command prefix args arg-pos))))
|
|
|
|
(define (offer-completions command)
|
|
(let* ((tokens/cursor-list (tokenize-command command))
|
|
(args (map car (cdr tokens/cursor-list)))
|
|
(command (caar tokens/cursor-list)))
|
|
(call-with-values
|
|
(lambda ()
|
|
(find-token-with-cursor tokens/cursor-list))
|
|
(lambda (prefix arg-pos)
|
|
;; #### FIXME
|
|
(if (not prefix)
|
|
(error "could not determine token with cursor position"
|
|
tokens/cursor-list command
|
|
(- (buffer-pos-col command-buffer) 2)))
|
|
(let ((completions
|
|
(call-completer command args
|
|
prefix arg-pos)))
|
|
(if (= (length completions) 1)
|
|
(begin
|
|
(call-with-values
|
|
(lambda ()
|
|
(assemble-line-with-completion
|
|
command args arg-pos (car completions)))
|
|
display-completed-line)
|
|
#f)
|
|
(let* ((select-list
|
|
(completions->select-list
|
|
completions
|
|
(- (result-buffer-num-lines result-buffer) 3)))
|
|
(selector
|
|
(make-completion-selector
|
|
select-list completions
|
|
command args arg-pos)))
|
|
(paint-completion-select-list select-list command)
|
|
(move-cursor command-buffer result-buffer)
|
|
(refresh-command-window)
|
|
selector)))))))
|
|
|
|
(define (make-completion-selector select-list completions
|
|
command arg arg-pos)
|
|
(lambda (key)
|
|
(cond
|
|
((= key 10)
|
|
(focus-command-buffer!)
|
|
(call-with-values
|
|
(lambda ()
|
|
(assemble-line-with-completion
|
|
command arg arg-pos
|
|
(select-list-selected-entry select-list)))
|
|
display-completed-line)
|
|
#f)
|
|
((or (select-list-navigation-key? key)
|
|
(select-list-marking-key? key))
|
|
(let ((new-select-list
|
|
(select-list-handle-key-press
|
|
select-list
|
|
(make-key-pressed-message
|
|
(active-command) (current-result)
|
|
result-buffer key #f))))
|
|
(paint-completion-select-list
|
|
new-select-list (last (buffer-text command-buffer)))
|
|
(make-completion-selector
|
|
new-select-list completions command arg arg-pos)))
|
|
(else
|
|
;; #### FIXME we loose a character this way
|
|
(focus-command-buffer!)
|
|
#f))))
|
|
|
|
(define (find-token-with-cursor tokens/cursor-list)
|
|
(debug-message "find-token-with-cursor " tokens/cursor-list)
|
|
(let lp ((lst tokens/cursor-list) (i 0))
|
|
(cond
|
|
((null? lst)
|
|
(values #f i))
|
|
((cdar lst)
|
|
(values (caar lst) i))
|
|
(else
|
|
(lp (cdr lst) (+ i 1))))))
|
|
|
|
(define (command-token-delimiter? c)
|
|
(char-set-contains? char-set:whitespace c))
|
|
|
|
(define (skip-delimters delimiter? chars)
|
|
(let lp ((chars chars) (i 0))
|
|
(cond
|
|
((null? chars) (values '() i))
|
|
((delimiter? (car chars))
|
|
(lp (cdr chars) (+ i 1)))
|
|
(else (values chars i)))))
|
|
|
|
(define (tokenize-command command)
|
|
(let ((cursor-pos (- (buffer-pos-col command-buffer) 2))) ;; don't ask
|
|
(let lp ((chars (string->list command))
|
|
(token "")
|
|
(tokens '())
|
|
(i 0))
|
|
(cond
|
|
((null? chars)
|
|
(reverse (cons (cons token (= i cursor-pos)) tokens)))
|
|
((command-token-delimiter? (car chars))
|
|
(call-with-values
|
|
(lambda ()
|
|
(skip-delimters command-token-delimiter? chars))
|
|
(lambda (rest skipped)
|
|
(lp rest "" (cons (cons token (= i cursor-pos)) tokens)
|
|
(+ i skipped)))))
|
|
(else
|
|
(lp (cdr chars) (string-append token (string (car chars)))
|
|
tokens (+ i 1)))))))
|
|
|
|
(define-record-type standard-result-obj standard-result-obj
|
|
(make-standard-result-obj cursor-pos-y
|
|
cursor-pos-x
|
|
result-text
|
|
result)
|
|
standard-result-obj?
|
|
(cursor-pos-y standard-result-obj-cur-pos-y)
|
|
(cursor-pos-x standard-result-obj-cur-pos-x)
|
|
(result-text standard-result-obj-result-text)
|
|
(result standard-result-obj-result))
|
|
|
|
(define init-std-res
|
|
(make-standard-result-obj 1 1 '("") ""))
|
|
|
|
;;Standard-Receiver:
|
|
(define (standard-receiver-rec message)
|
|
(cond
|
|
((init-with-result-message? message)
|
|
(make-standard-result-obj
|
|
1 1
|
|
(layout-result-standard
|
|
(exp->string (init-with-result-message-result message))
|
|
(result-buffer-num-cols
|
|
(init-with-result-message-buffer message)))
|
|
(init-with-result-message-result message)))
|
|
((next-command-message? message)
|
|
(let* ((result (eval-expression (message-command-string message)))
|
|
(result-string (exp->string result))
|
|
(width (next-command-message-width message))
|
|
(text (layout-result-standard result-string width))
|
|
(std-obj (make-standard-result-obj 1 1 text result)))
|
|
std-obj))
|
|
((print-message? message)
|
|
(let* ((model (message-result-object message))
|
|
(pos-y (standard-result-obj-cur-pos-y model))
|
|
(pos-x (standard-result-obj-cur-pos-x model))
|
|
(width (print-message-width message))
|
|
(result (standard-result-obj-result model))
|
|
(text (layout-result-standard
|
|
(exp->string result) width)))
|
|
(make-simple-result-buffer-printer
|
|
pos-y pos-x text '() '())))
|
|
|
|
((key-pressed-message? message)
|
|
(message-result-object message))
|
|
((restore-message? message)
|
|
(values))
|
|
((selection-message? message)
|
|
"")))
|
|
|
|
(define standard-view-plugin
|
|
(make-view-plugin standard-receiver-rec
|
|
(lambda (val) #t)))
|