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ruby-additional.el: ruby-decode-unicode

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* misc/ruby-additional.el (ruby-decode-unicode): new function to
  convert escaped Unicode to raw string.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53578 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-01-18 13:49:51 +00:00
parent 90d6062181
commit 8d6d6116ac
1 changed files with 27 additions and 1 deletions
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28
misc/ruby-additional.el
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@ -106,7 +106,7 @@ Emacs to Ruby."
(t (when ruby-insert-encoding-magic-comment
(insert "# -*- coding: " coding-system " -*-\n"))))))))
(define-key ruby-mode-map "\C-cU" 'ruby-encode-unicode)
(define-key ruby-mode-map "\C-cU" 'ruby-encode-decode-unicode)
(defun ruby-encode-unicode (beg end)
"Convert non-ascii string in the given region to \\u{} form."
@ -131,6 +131,32 @@ Emacs to Ruby."
(setq str (mapconcat f str sep))
(delete-region (match-beginning 0) (match-end 0))
(insert b str e))))
(defun ruby-decode-unicode (beg end)
"Convert escaped Unicode in the given region to raw string."
(interactive "r")
(setq end (set-marker (make-marker) end))
(goto-char beg)
(while (and (< (point) end)
(re-search-forward "\\\\u\\([0-9a-fA-F]\\{4\\}\\)\\|\\\\u{\\([0-9a-fA-F \t]+\\)}" end t))
(let ((b (match-beginning 0)) (e (match-end 0))
(s (match-string-no-properties 1)))
(if s
(setq s (cons s nil))
(goto-char (match-beginning 2))
(while (looking-at "[ \t]*\\([0-9a-fA-F]+\\)")
(setq s (cons (match-string-no-properties 1) s))
(goto-char (match-end 0))))
(setq s (mapconcat (lambda (c) (format "%c" (string-to-int c 16)))
(nreverse s) ""))
(delete-region b e)
(insert s))
))
(defun ruby-encode-decode-unicode (dec beg end)
"Convert Unicode <-> \\u{} in the given region."
(interactive "P\nr")
(if dec (ruby-decode-unicode beg end) (ruby-encode-unicode beg end)))
))
;; monkey-patching ruby-mode.el in Emacs 24, as r49872.