From: Vitalie Spinu <spinuvit@gmail.com>
To: sds@gnu.org
Cc: emacs-devel@gnu.org
Subject: Re: feature request: view part of file
Date: Sat, 19 Jan 2013 00:52:50 +0100 [thread overview]
Message-ID: <8738xykq0d.fsf@gmail.com> (raw)
In-Reply-To: <877gnakr1d.fsf@gmail.com> (Vitalie Spinu's message of "Sat, 19 Jan 2013 00:30:38 +0100")
>> Vitalie Spinu <spinuvit@gmail.com>
>> on Sat, 19 Jan 2013 00:30:38 +0100 wrote:
>> Sam Steingold <sds@gnu.org>
>> on Thu, 14 Jun 2012 17:29:58 -0400 wrote:
>> I put vlf.el by Mathias into elpa. I rewrote it almost completely
>> (bzr still has the original version at revno 233). it works for me.
VS> It doesn't work for me. vlf-next-batch pops:
VS> Debugger entered--Lisp error: (wrong-type-argument file-offset 2048.0)
VS> insert-file-contents("/home/vitoshka/test/foo.csv" nil 1024 2048.0)
VS> vlf-next-batch(nil)
VS> call-interactively(vlf-next-batch nil nil)
So it is really a bug in emacs, insert-file-contents accepts integer
values only, but for big files the size and positions are floats. In my
case 802200060.0.
It happens because vlf-file-size if float:
╭──────── #143 ─ /home/vitoshka/Dropbox/ELPA/vlf-0.2/vlf.el ──
│ vlf-file-size ((nth 7 (file-attributes file)))
╰──────── #143 ─
and
╭──────── #102 ─ /home/vitoshka/Dropbox/ELPA/vlf-0.2/vlf.el ──
│ (end (min vlf-file-size (+ vlf-end-pos vlf-batch-size))))
╰──────── #102 ─
returns float which is passed down to insert-file-contents.
So I am stuck here, I just cannot technically access the last piece of
my (700MB) file.
Thanks,
Vitalie
VS> Would be nice to actually write the batch into a local file and put the
VS> buffer into the appropriate mode. So if the file is csv I view it in
VS> csv-mode. Then get a special command to write the contents into the
VS> original file.
VS> The dired integration could be improved by making it pop into vlf mode
VS> whenever the file exceeds some user specified size.
VS> Vitalie
>> I wish I knew how to hook it into files.el, but I don't...
>> vlf.el has 2 issues:
>> 1. insert-file-contents hangs emacs (see `vlf-next-batch'):
>> ;; replacing `erase-buffer' with replace arg to `insert-file-contents'
>> ;; hangs emacs
>> (unless append (erase-buffer))
>> (insert-file-contents buffer-file-name nil vlf-end-pos end)
>> 2. I have this:
>> (define-key map [C-+] 'vlf-change-batch-size)
>> When I do C-+ (by pressing Ctrl, Shift, and the "+=" key to the left of
>> backspace), I get "C-+ is undefined".
>> when I do M-x vlf-change-batch-size RET, I get
>> "You can run the command `vlf-change-batch-size' with <C-+>"
>> The "+" in both messages is the same character (43, #o53, #x2b).
next prev parent reply other threads:[~2013-01-18 23:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-13 20:52 feature request: view part of file Sam Steingold
2012-06-13 23:16 ` Stefan Monnier
2012-06-14 16:20 ` Sam Steingold
2012-06-14 16:53 ` Mathias Dahl
2012-06-14 17:32 ` Stephen J. Turnbull
2012-06-14 18:21 ` bug#8794: " Paul Eggert
2012-06-14 18:21 ` Paul Eggert
[not found] ` <jwvd3517qww.fsf-monnier+emacs@gnu.org>
[not found] ` <CABrcCQ5zDfB2tw9DRrwpCZmDqHPc+BB6W5w9ULNU95e_v4yyJw@mail.gmail.com>
[not found] ` <87395xu768.fsf@gnu.org>
[not found] ` <CABrcCQ6rpG9qhsCO+ZEpTiNqbQRtg-PBeb=q_B5F8YgrGxoWKA@mail.gmail.com>
[not found] ` <jwvvcit67sc.fsf-monnier+emacs@gnu.org>
2012-06-14 19:34 ` Sam Steingold
2012-06-14 21:29 ` Sam Steingold
2012-06-18 20:34 ` Štěpán Němec
2012-07-19 17:58 ` Samuel Bronson
2012-07-19 19:38 ` Stephen J. Turnbull
2012-08-04 11:58 ` Andrey Kotlarski
2013-01-18 23:30 ` Vitalie Spinu
2013-01-18 23:52 ` Vitalie Spinu [this message]
2013-01-19 6:54 ` Eli Zaretskii
2013-01-19 10:18 ` Paul Eggert
2013-01-19 10:51 ` Eli Zaretskii
2013-01-19 12:47 ` Paul Eggert
2013-01-19 13:47 ` Eli Zaretskii
2013-01-19 19:00 ` Paul Eggert
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