Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

351 lines (324 sloc) 10.882 kb
;;;
;;; Copyright (c) 2003-2012 uim Project http://code.google.com/p/uim/
;;;
;;; All rights reserved.
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;; 1. Redistributions of source code must retain the above copyright
;;; notice, this list of conditions and the following disclaimer.
;;; 2. Redistributions in binary form must reproduce the above copyright
;;; notice, this list of conditions and the following disclaimer in the
;;; documentation and/or other materials provided with the distribution.
;;; 3. Neither the name of authors nor the names of its contributors
;;; may be used to endorse or promote products derived from this software
;;; without specific prior written permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
;;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;;; ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE
;;; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
;;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
;;; OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
;;; HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
;;; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
;;; OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
;;; SUCH DAMAGE.
;;;;
(require "util.scm")
;; config
(define enable-emacs-like-key-prefix? #t)
;; valid-key-symbols is defined in uim-key.c
(define key-symbol?
(lambda (sym)
(member sym valid-key-symbols)))
(define intern-key-symbol
(lambda (key-str)
(let ((sym (string->symbol key-str)))
(if (memq sym valid-key-symbols)
sym
#f))))
;
(define shift-key-mask
(lambda (state)
(= (bitwise-and state 1) 1)))
(define control-key-mask
(lambda (state)
(= (bitwise-and state 2) 2)))
(define alt-key-mask
(lambda (state)
(= (bitwise-and state 4) 4)))
(define meta-key-mask
(lambda (state)
(= (bitwise-and state 8) 8)))
(define super-key-mask
(lambda (state)
(= (bitwise-and state 64) 64)))
(define hyper-key-mask
(lambda (state)
(= (bitwise-and state 128) 128)))
(define modifier-key-mask
(lambda (state)
(> state 0)))
(define modifier-key?
(lambda (key key-state)
(or
(eq? key 'Shift_key)
(eq? key 'Control_key)
(eq? key 'Alt_key)
(eq? key 'Meta_key)
(eq? key 'Super_key)
(eq? key 'Hyper_key))))
(define key-state-alist
'((Shift_key . 1)
(Control_key . 2)
(Alt_key . 4)
(Meta_key . 8)
(Super_key . 64)
(Hyper_key . 128)))
(define emacs-like-prefix-alist
'(("S" . Shift_key)
("C" . Control_key)
("A" . Alt_key)
("M" . Meta_key)
("Z" . Super_key)
("H" . Hyper_key)
("I" . IgnoreCase)
("J" . IgnoreShift)
("K" . IgnoreRegularShift)))
(define tag-prefix-alist
'(("Shift" . Shift_key)
("Control" . Control_key)
("Alt" . Alt_key)
("Meta" . Meta_key)
("Super" . Super_key)
("Hyper" . Hyper_key)
("IgnoreCase" . IgnoreCase)
("IgnoreShift" . IgnoreShift)
("IgnoreRegularShift" . IgnoreRegularShift)))
(define translator-prefix?
(lambda (symbol)
(or (eq? symbol 'IgnoreCase)
(eq? symbol 'IgnoreShift)
(eq? symbol 'IgnoreRegularShift))))
;;
(define intern-key-prefix
(lambda (symbol-str alist)
(let ((pair (assoc symbol-str alist)))
(and pair
(cdr pair)))))
(define parse-tag-prefix-symbol
(lambda (parsed char-list)
(let ((prefix (if (string=? parsed "")
#f
(intern-key-prefix parsed tag-prefix-alist))))
(if (not (null? char-list))
(let* ((head (car char-list))
(head-char (string->charcode head))
(rest (cdr char-list)))
(if (or (ichar-alphabetic? head-char)
(ichar-numeric? head-char)
(string=? head "_"))
(parse-tag-prefix-symbol (string-append parsed head) rest)
(cons prefix char-list)))
(cons prefix ())))))
(define parse-tag-prefix
(lambda (str)
(if (not (string=? str ""))
(let* ((char-list (reverse (string-to-list str)))
(head (car char-list)))
(if (string=? head "<")
(let* ((parsed (parse-tag-prefix-symbol "" (cdr char-list)))
(prefix (car parsed))
(rest (cdr parsed)))
(if (and (not (null? rest))
(string=? (car rest) ">"))
(cons prefix
(if (null? (cdr rest))
""
(apply string-append (cdr rest))))
(cons #f str)))
(cons #f str)))
(cons #f str))))
(define parse-emacs-like-prefix
(lambda (str)
(let* ((char-list (reverse (string-to-list str)))
(prefix-str (and (<= 2 (length char-list))
(string=? (nth 1 char-list) "-")
(car char-list)))
(prefix (intern-key-prefix prefix-str emacs-like-prefix-alist))
(rest (if prefix
(apply string-append (cddr char-list))
str)))
(cons prefix rest))))
(define parse-key-prefix
(lambda (str)
(let* ((parsed-as-emacs (parse-emacs-like-prefix str))
(emacs-prefix (car parsed-as-emacs)))
(or (and enable-emacs-like-key-prefix?
emacs-prefix
parsed-as-emacs)
(parse-tag-prefix str)))))
(define parse-key-str
(lambda (str translators key key-state)
(let ((str-len (string-length str)))
(cond
((= str-len 0)
(list "" translators key key-state))
((= str-len 1)
(list "" translators (string->charcode str) key-state))
((<= 2 str-len)
(let* ((parsed (parse-key-prefix str))
(prefix (car parsed))
(rest (cdr parsed)))
(cond
((modifier-key? prefix 0)
(let ((key-state (bitwise-ior key-state
(cdr (assq prefix key-state-alist)))))
(parse-key-str rest translators key key-state)))
((translator-prefix? prefix)
(let* ((translator
(cond
((eq? prefix 'IgnoreCase)
(lambda (key key-state)
(let ((translated-key (ichar-downcase key)))
(list translated-key key-state))))
((eq? prefix 'IgnoreShift)
(lambda (key key-state)
(let ((translated-key-state
(bitwise-and key-state
(bitwise-not 1))))
(list key translated-key-state))))
((eq? prefix 'IgnoreRegularShift)
(lambda (key key-state)
(let ((translated-key-state
(if (ichar-graphic? key)
(bitwise-and key-state
(bitwise-not 1))
key-state)))
(list key translated-key-state))))))
(translators (cons translator
translators)))
(parse-key-str rest translators key key-state)))
(else
(let* ((key-symbol (intern-key-symbol str))
(key (or key-symbol
key))
(rest (if key-symbol
""
rest)))
(list rest translators key key-state))))))))))
(define apply-translators
(lambda (translators key key-state)
(if (null? translators)
(list translators key key-state)
(let* ((translator (car translators))
(rest-translators (cdr translators))
(translated (translator key key-state))
(translated-key (car translated))
(translated-state (cadr translated)))
(apply-translators
rest-translators
translated-key
translated-state)))))
;; Generates key predicate
;; (make-single-key-predicate "<Control>j")
(define make-single-key-predicate
(lambda (source)
(cond
((string? source)
(let* ((key-str source)
(parsed (parse-key-str key-str () -1 0))
(translated (apply apply-translators (cdr parsed)))
(translators (nth 1 parsed))
(target-key (nth 1 translated))
(target-state (nth 2 translated)))
(lambda (key key-state)
(let* ((translated (apply-translators translators key key-state))
(key (nth 1 translated))
(key-state (nth 2 translated)))
(and (eqv? key target-key)
(eqv? key-state target-state))))))
((symbol? source)
(let ((predicate-sym source))
(lambda (key key-state)
((symbol-value predicate-sym) key key-state))))
(else
(let ((maybe-predicate source))
maybe-predicate)))))
;; Generates or'ed key predicate
;; (make-key-predicate '("<Control>j" "<Alt>k" "<Control>L"))
(define make-key-predicate
(lambda (sources)
(cond
((list? sources)
(let ((predicates (map make-single-key-predicate sources)))
(lambda (key key-state)
(apply proc-or
(map (lambda (predicate)
(apply predicate (list key key-state)))
predicates)))))
(else
(let ((source sources))
(make-single-key-predicate source))))))
(define modify-key-strs-implicitly
(lambda (key-strs)
(cond
((list? key-strs)
(map modify-key-strs-implicitly key-strs))
((string? key-strs)
(let* ((key-str key-strs)
(modified-key-str (string-append
"<IgnoreRegularShift>"
key-str)))
modified-key-str))
(else
(let ((maybe-predicate key-strs))
maybe-predicate)))))
;; Generates or'ed key predicate and bind it into
;; toplevel-environment. Use define-key rather than calling this
;; directly.
;; (define-key-internal 'foo-key? '("<Control>j" "<Alt>k" "<Control>L"))
(define define-key-internal
(lambda (key-predicate-sym key-strs)
(let* ((modified-key-strs (modify-key-strs-implicitly key-strs))
(predicate (make-key-predicate modified-key-strs)))
(eval (list 'define key-predicate-sym predicate)
(interaction-environment)))))
(define-macro define-key
(lambda (key-predicate-sym key-strs)
`(define-key-internal ',key-predicate-sym ,key-strs)))
(define valid-key-str?
(lambda (key-str)
(let* ((parsed (parse-key-str key-str () -1 0))
(rest (nth 0 parsed))
(translators (nth 1 parsed))
(key (nth 2 parsed))
(key-state (nth 3 parsed)))
(and (string? key-str)
(string=? rest "")
(not (eqv? key -1))))))
;; 'strict-key-str' stands for key-str without translator-prefixes and
;; emacs like prefix
(define valid-strict-key-str?
(lambda (key-str)
(let ((saved-enable-eprefix? enable-emacs-like-key-prefix?)
(res #f))
(set! enable-emacs-like-key-prefix? #f)
(let* ((parsed (parse-key-str key-str () -1 0))
(rest (nth 0 parsed))
(translators (nth 1 parsed))
(key (nth 2 parsed))
(key-state (nth 3 parsed)))
(set! res (and (string? key-str)
(string=? rest "")
(null? translators)
(not (eqv? key -1)))))
(set! enable-emacs-like-key-prefix? saved-enable-eprefix?)
res)))
;;
(define-key left-key? "left")
(define-key right-key? "right")
(define-key switch-im-key? '("<Control>Shift_key" "<Shift>Control_key"))
Jump to Line
Something went wrong with that request. Please try again.