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easy-kill-to-char.el
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easy-kill-to-char.el
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;;; easy-kill-to-char.el --- vi-like to-char/up-to-char selectors for easy-kill.
;; Author: Akinori MUSHA <knu@iDaemons.org>
;; URL: https://github.com/knu/easy-kill-extras.el
;; Created: 4 Mar 2015
;; Package-Requires: ((easy-kill "0.9.4"))
;; Keywords: killing, convenience
;; Copyright (c) 2014-2023 Akinori MUSHA
;;
;; 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.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
;;; Commentary:
;;
;; This tweak adds vi-like to-char/up-to-char selectors to easy-kill.
;;
;; This library is part of the easy-kill-extras package and not meant
;; to be used standalone.
;;; Code:
(require 'easy-kill)
;;;###autoload
(defun easy-mark-to-char (n)
"Start easy-mark with string-to-char-forward."
(interactive "p")
(easy-mark n))
;;;###autoload
(defun easy-mark-up-to-char (n)
"Start easy-mark with string-up-to-char-forward."
(interactive "p")
(easy-mark n))
(defmacro easy-kill-defun-string-to-char (include backward)
"Macro to define string-to-char functions."
(let* ((command-prefix "easy-kill-on-")
(format-name (lambda (include_ backward_ &optional prefix)
(format "string-%s-char-%s"
(if include_ "to" "up-to")
(if backward_ "backward" "forward"))))
(name (funcall format-name include backward))
(prompt (format "%s character %s: "
(if include "To" "Up to")
(if backward "backward" "forward")))
(search-func (if backward 'search-backward 'search-forward)))
`(defun ,(intern (concat command-prefix name)) (n)
,(format "Provide an easy-kill-target `%s', which works like vi's `%s' command."
name
(if include (if backward "F" "f")
(if backward "T" "t")))
(interactive)
(let* (case-fold-search
(c (or (easy-kill-get zap-char)
(read-char ,prompt t)))
(beg (point))
(pos (easy-kill-get zap-pos))
(pos (cond ((natnump n)
(cond ((and pos
(not (eq this-command 'easy-kill-digit-argument)))
;; if called consecutively
(if (,(if backward '>= '<=) beg pos)
;; expand
(save-excursion
(goto-char pos)
(and (,search-func (char-to-string c) nil t n)
(point)))
;; shrink
(unless (ignore-errors (,(intern (concat command-prefix (funcall format-name include (not backward)))) '-))
;; or cross over to the other side
(overlay-put easy-kill-candidate 'zap-pos beg)
(unless (ignore-errors (,(intern (concat command-prefix name)) 1))
(overlay-put easy-kill-candidate 'zap-pos pos)))
nil))
(t
;; first time or with a digit argument
(save-excursion
;; find the next occurrence excluding the character at point
,@(unless backward '((forward-char 1)))
;; signal an error if not found to avoid fallback
(,search-func (char-to-string c) nil nil n)
(point)))))
((eq n '+)
(save-excursion
(goto-char pos)
(and (,search-func (char-to-string c) nil t)
(point))))
((eq n '-)
(save-excursion
(goto-char (,(if backward '1+ '1-) pos))
(and (,search-func (char-to-string c) ,(if backward 'beg '(1+ beg)) t -1)
(,(if backward '1- '1+) (point))))))))
(when pos
(easy-kill-adjust-candidate ',(intern name)
beg ,(if include 'pos `(,(if backward '1+ '1-) pos)))
(overlay-put easy-kill-candidate 'zap-char c)
(overlay-put easy-kill-candidate 'zap-pos pos)
t)))))
(easy-kill-defun-string-to-char t nil)
(easy-kill-defun-string-to-char t t)
(easy-kill-defun-string-to-char nil nil)
(easy-kill-defun-string-to-char nil t)
;;;###autoload (autoload 'easy-kill-on-string-to-char-forward "easy-kill-extras")
;;;###autoload (autoload 'easy-kill-on-string-to-char-backward "easy-kill-extras")
;;;###autoload (autoload 'easy-kill-on-string-up-to-char-forward "easy-kill-extras")
;;;###autoload (autoload 'easy-kill-on-string-up-to-char-backward "easy-kill-extras")
(provide 'easy-kill-to-char)
;;; easy-kill-to-char.el ends here