#lang racket/base ;; For legal info, see file "info.rkt" (require racket/cmdline racket/date "charterm.rkt") (define (%charterm:string-pad-or-truncate str width) (let ((len (string-length str))) (cond ((= len width) str) ((< len width) (string-append str (make-string (- width len) #\space))) (else (substring str 0 width))))) (define (%charterm:bytes-pad-or-truncate bstr width) (let ((len (bytes-length bstr))) (cond ((= len width) bstr) ((< len width) (let ((new-bstr (make-bytes width 32))) (bytes-copy! new-bstr 0 bstr) new-bstr)) (else (subbytes bstr 0 width))))) (define-struct %charterm:demo-input (x y width bytes used cursor) #:mutable) (define (%charterm:make-demo-input x y width bstr) (let ((new-bstr (%charterm:bytes-pad-or-truncate bstr width)) (used (min (bytes-length bstr) width))) (make-%charterm:demo-input x y width new-bstr used used))) (define (%charterm:demo-input-redraw di) (charterm-cursor (%charterm:demo-input-x di) (%charterm:demo-input-y di)) (charterm-normal) (charterm-underline) (charterm-display (%charterm:demo-input-bytes di) #:width (%charterm:demo-input-width di)) (charterm-normal)) (define (%charterm:demo-input-put-cursor di) ;; Note: Commented-out debugging code: ;; ;; (and #t ;; (begin (charterm-normal) ;; (charterm-cursor (+ (%charterm:demo-input-x di) ;; (%charterm:demo-input-width di) ;; 1) ;; (%charterm:demo-input-y di)) ;; (charterm-display #" cursor: " ;; (%charterm:demo-input-cursor di) ;; #" used: " ;; (%charterm:demo-input-used di)) ;; (charterm-clear-line-right))) (charterm-cursor (+ (%charterm:demo-input-x di) (%charterm:demo-input-cursor di)) (%charterm:demo-input-y di))) (define (%charterm:demo-input-cursor-left di) (let ((cursor (%charterm:demo-input-cursor di))) (if (zero? cursor) (begin (charterm-bell) (%charterm:demo-input-put-cursor di)) (begin (set-%charterm:demo-input-cursor! di (- cursor 1)) (%charterm:demo-input-put-cursor di))))) (define (%charterm:demo-input-cursor-right di) (let ((cursor (%charterm:demo-input-cursor di))) (if (= cursor (%charterm:demo-input-used di)) (begin (charterm-bell) (%charterm:demo-input-put-cursor di)) (begin (set-%charterm:demo-input-cursor! di (+ cursor 1)) (%charterm:demo-input-put-cursor di))))) (define (%charterm:demo-input-backspace di) (let ((cursor (%charterm:demo-input-cursor di))) (if (zero? cursor) (begin (charterm-bell) (%charterm:demo-input-put-cursor di)) (let ((bstr (%charterm:demo-input-bytes di)) (used (%charterm:demo-input-used di))) ;; TODO: test beginning/end of buffer, of used, of width (bytes-copy! bstr (- cursor 1) bstr cursor used) (bytes-set! bstr (- used 1) 32) (set-%charterm:demo-input-used! di (- used 1)) (set-%charterm:demo-input-cursor! di (- cursor 1)) (%charterm:demo-input-redraw di) (%charterm:demo-input-put-cursor di))))) (define (%charterm:demo-input-delete di) (let ((cursor (%charterm:demo-input-cursor di)) (used (%charterm:demo-input-used di))) (if (= cursor used) (begin (charterm-bell) (%charterm:demo-input-put-cursor di)) (let ((bstr (%charterm:demo-input-bytes di))) (or (= cursor used) (bytes-copy! bstr cursor bstr (+ 1 cursor) used)) (bytes-set! bstr (- used 1) 32) (set-%charterm:demo-input-used! di (- used 1)) (%charterm:demo-input-redraw di) (%charterm:demo-input-put-cursor di))))) (define (%charterm:demo-input-insert-byte di new-byte) (let ((used (%charterm:demo-input-used di)) (width (%charterm:demo-input-width di))) (if (= used width) (begin (charterm-bell) (%charterm:demo-input-put-cursor di)) (let ((bstr (%charterm:demo-input-bytes di)) (cursor (%charterm:demo-input-cursor di))) (or (= cursor used) (bytes-copy! bstr (+ cursor 1) bstr cursor used)) (bytes-set! bstr cursor new-byte) (set-%charterm:demo-input-used! di (+ 1 used)) (set-%charterm:demo-input-cursor! di (+ cursor 1)) (%charterm:demo-input-redraw di) (%charterm:demo-input-put-cursor di))))) (provide charterm-demo) (define (charterm-demo #:tty (tty #f) #:escape? (escape? #t)) (let ((data-row 4) (di (%charterm:make-demo-input 10 2 18 #"Hello, world!"))) (with-charterm (let ((ct (current-charterm))) (let/ec done-ec (let loop-remember-read-screen-size ((last-read-col-count 0) (last-read-row-count 0)) (let loop-maybe-check-screen-s
# Compatible with ranger 1.5.3 through 1.7.*
#
# Change the prompt when you open a shell from inside ranger
#
# Add this line to your .bashrc for it to work.

[ -n "$RANGER_LEVEL" ] && PS1="$PS1"'(in ranger) '
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-08-07 04:29:55 +0000
term-normal) (charterm-display (format " ~S" `(,(charterm-keyinfo-keyset-id keyinfo) ,(charterm-keyinfo-bytelang keyinfo) ,(charterm-keyinfo-bytelist keyinfo) ,@(charterm-keyinfo-all-keycodes keyinfo)))) (if (char? keycode) (let ((key-num (char->integer keycode))) (if (<= 32 key-num 126) (begin (%charterm:demo-input-insert-byte di key-num) (loop-fast-next-key)) (loop-fast-next-key))) (case keycode ((left) (%charterm:demo-input-cursor-left di) (loop-fast-next-key)) ((right) (%charterm:demo-input-cursor-right di) (loop-fast-next-key)) ((backspace) (%charterm:demo-input-backspace di) (loop-fast-next-key)) ((delete) (%charterm:demo-input-delete di) (loop-fast-next-key)) ((escape) (if escape? (begin (charterm-clear-screen) (charterm-display "You have escaped the charterm demo!") (charterm-newline) (done-ec)) (loop-fast-next-key))) (else (loop-fast-next-key))))) (begin ;; (charterm-display "Timeout.") (loop-maybe-check-screen-size))))))))))))))) (provide main) (define (main . args) ;; TODO: Accept TTY as an argument. (let ((tty #f) (escape? #t)) (command-line #:program "(charterm Demo)" #:once-each (("--tty" "-t") arg "The TTY to use (default: /dev/tty)." (set! tty arg)) #:once-any (("--escape" "-e") "Esc key quits program (default)." (set! escape? #t)) (("--no-escape" "-n") "Esc key does not quit program." (set! escape? #f))) (charterm-demo #:tty tty #:escape? escape?)))