sascha/vlfi
1
0
Fork 0
mirror of https://github.com/m00natic/vlfi.git synced 2025-01-18 12:05:31 +00:00
Code Issues Releases Wiki Activity

Merge branch 'master' into chunk-opt2

Browse Source
This commit is contained in:
Andrey Kotlarski 2013-05-02 14:19:50 +03:00
commit de1948ed36
1 changed files with 14 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
vlfi.el
View File

@ -200,9 +200,9 @@ with the prefix argument DECREASE it is halved."
"Update the current buffer name."
(rename-buffer (vlfi-format-buffer-name) t))
(defmacro vlfi-get-file-size (file)
(defun vlfi-get-file-size (file)
"Get size in bytes of FILE."
`(nth 7 (file-attributes ,file)))
(nth 7 (file-attributes file)))
(defun vlfi-insert-file (&optional from-end)
"Insert first chunk of current file contents in current buffer.
@ -428,6 +428,7 @@ Return cons \(success-status . number-of-bytes-moved-back\)."
(defun vlfi-re-search (regexp count backward batch-step)
"Search for REGEXP COUNT number of times forward or BACKWARD.
BATCH-STEP is amount of overlap between successive chunks."
(assert (< 0 count))
(let* ((match-chunk-start vlfi-start-pos)
(match-chunk-end vlfi-end-pos)
(match-start-pos (+ vlfi-start-pos (position-bytes (point))))
@ -561,18 +562,23 @@ Search is performed chunk by chunk in `vlfi-batch-size' memory."
(vlfi-re-search regexp count t (/ vlfi-batch-size 8)))
(defun vlfi-goto-line (n)
"Go to line N."
"Go to line N. If N is negative, count from the end of file."
(interactive "nGo to line: ")
(let ((start-pos vlfi-start-pos)
(end-pos vlfi-end-pos)
(pos (point))
(success nil))
(unwind-protect
(progn (vlfi-beginning-of-file)
(goto-char (point-min))
(setq success (vlfi-re-search "[\n\C-m]" (1- n)
nil 0)))
(unless success
(if (< 0 n)
(progn (vlfi-beginning-of-file)
(goto-char (point-min))
(setq success (vlfi-re-search "[\n\C-m]" (1- n)
nil 0)))
(vlfi-end-of-file)
(goto-char (point-max))
(setq success (vlfi-re-search "[\n\C-m]" (- n) t 0)))
(if success
(message "Onto line %s" n)
(vlfi-move-to-chunk start-pos end-pos)
(goto-char pos)))))