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Attempt to refactor two "duplicate" functions.

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Attempt to extract a generic function `prelude-get-positions-of-line-or-region` from `prelude-duplicate-current-line-or-region` and `prelude-duplicate-and-comment-current-line-or-region`
This commit is contained in:
Jeremy Bi 2014-03-20 11:05:40 +08:00
parent 08494c79db
commit 1c93689701
1 changed files with 33 additions and 32 deletions
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65
core/prelude-core.el
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@ -198,50 +198,51 @@ point reaches the beginning or end of the buffer, stop there."
(kill-new filename)
(message "Copied buffer file name '%s' to the clipboard." filename))))
(defun prelude-get-positions-of-line-or-region ()
"Return positions (beg . end) of the current line
or region."
(let (beg end)
(if (and mark-active (> (point) (mark)))
(exchange-point-and-mark))
(setq beg (line-beginning-position))
(if mark-active
(exchange-point-and-mark))
(setq end (line-end-position))
(cons beg end)))
(defun prelude-duplicate-current-line-or-region (arg)
"Duplicates the current line or region ARG times.
If there's no region, the current line will be duplicated. However, if
there's a region, all lines that region covers will be duplicated."
(interactive "p")
(let (beg end (origin (point)))
(if (and mark-active (> (point) (mark)))
(exchange-point-and-mark))
(setq beg (line-beginning-position))
(if mark-active
(exchange-point-and-mark))
(setq end (line-end-position))
(let ((region (buffer-substring-no-properties beg end)))
(-dotimes arg
(lambda (n)
(goto-char end)
(newline)
(insert region)
(setq end (point))))
(goto-char (+ origin (* (length region) arg) arg)))))
(pcase-let* ((origin (point))
(`(,beg . ,end) (prelude-get-positions-of-line-or-region))
(region (buffer-substring-no-properties beg end)))
(-dotimes arg
(lambda (n)
(goto-char end)
(newline)
(insert region)
(setq end (point))))
(goto-char (+ origin (* (length region) arg) arg))))
;; TODO: Remove code duplication by extracting something more generic
(defun prelude-duplicate-and-comment-current-line-or-region (arg)
"Duplicates and comments the current line or region ARG times.
If there's no region, the current line will be duplicated. However, if
there's a region, all lines that region covers will be duplicated."
(interactive "p")
(let (beg end (origin (point)))
(if (and mark-active (> (point) (mark)))
(exchange-point-and-mark))
(setq beg (line-beginning-position))
(if mark-active
(exchange-point-and-mark))
(pcase-let* ((origin (point))
(`(,beg . ,end) (prelude-get-positions-of-line-or-region))
(region (buffer-substring-no-properties beg end)))
(comment-or-uncomment-region beg end)
(setq end (line-end-position))
(let ((region (buffer-substring-no-properties beg end)))
(comment-or-uncomment-region beg end)
(setq end (line-end-position))
(-dotimes arg
(lambda (n)
(goto-char end)
(newline)
(insert region)
(setq end (point))))
(goto-char (+ origin (* (length region) arg) arg)))))
(-dotimes arg
(lambda (n)
(goto-char end)
(newline)
(insert region)
(setq end (point))))
(goto-char (+ origin (* (length region) arg) arg))))
(defun prelude-rename-file-and-buffer ()
"Renames current buffer and file it is visiting."