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Refactor vlf-write.

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This commit is contained in:
Andrey Kotlarski 2013-12-12 02:20:03 +02:00
parent 2e2bca6999
commit 65b4d7413f
1 changed files with 24 additions and 22 deletions
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46
vlf.el
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@ -962,29 +962,31 @@ If changing size of chunk, shift remaining file content."
(or (verify-visited-file-modtime (current-buffer))
(y-or-n-p "File has changed since visited or saved. \
Save anyway? ")))
(let* ((pos (point))
(region-length (length (encode-coding-region
(point-min) (point-max)
buffer-file-coding-system t)))
(size-change (- vlf-end-pos vlf-start-pos region-length)))
(if (or (zerop size-change) (zerop vlf-file-size))
(progn
(if (zerop vlf-file-size) ;new file
(progn
(write-region nil nil buffer-file-name vlf-start-pos t)
(setq vlf-file-size (vlf-get-file-size buffer-file-name)
vlf-end-pos vlf-file-size)
(vlf-update-buffer-name))
(let* ((region-length (length (encode-coding-region
(point-min) (point-max)
buffer-file-coding-system t)))
(size-change (- vlf-end-pos vlf-start-pos
region-length)))
(if (zerop size-change)
(write-region nil nil buffer-file-name vlf-start-pos t)
(when (zerop vlf-file-size) ;new file
(setq vlf-file-size (vlf-get-file-size buffer-file-name)
vlf-end-pos vlf-file-size)
(vlf-update-buffer-name)))
(if (< 0 size-change)
(vlf-file-shift-back size-change)
(vlf-file-shift-forward (- size-change)))
(setq vlf-file-size (vlf-get-file-size buffer-file-name))
(vlf-move-to-chunk-2 vlf-start-pos
(if (< (- vlf-end-pos vlf-start-pos)
vlf-batch-size)
(+ vlf-start-pos vlf-batch-size)
vlf-end-pos))
(vlf-update-buffer-name)
(goto-char pos))))
(let ((pos (point)))
(if (< 0 size-change)
(vlf-file-shift-back size-change)
(vlf-file-shift-forward (- size-change)))
(setq vlf-file-size (vlf-get-file-size buffer-file-name))
(vlf-move-to-chunk-2 vlf-start-pos
(if (< (- vlf-end-pos vlf-start-pos)
vlf-batch-size)
(+ vlf-start-pos vlf-batch-size)
vlf-end-pos))
(vlf-update-buffer-name)
(goto-char pos))))))
t)
(defun vlf-file-shift-back (size-change)