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Re: Converting an Integer into Human Readable String
From: |
Thierry Volpiatto |
Subject: |
Re: Converting an Integer into Human Readable String |
Date: |
Fri, 08 Apr 2011 21:12:35 +0200 |
User-agent: |
Gnus/5.110016 (No Gnus v0.16) Emacs/23.3.50 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
>> From: "Pascal J. Bourguignon" <pjb@informatimago.com>
>> Date: Fri, 08 Apr 2011 13:41:30 +0200
>>
>> Instead, you could have had some fun, and implement yourself the
>> required function. Well, now you've got only what you merit, here I
>> had all the fun, you can have the function:
>>
>> (format-human-readable-big-number 123456789012
>> *normal-format*
>> *exceptional-format*
>> "B" t :binary)
>> --> " 114.978 GiB"
>>
>>
>> Now, you may call this function in the places of interest in emacs.
>
> Wow! I've just installed in Emacs a much more modest variant
> (reproduced below for those who don't live on the bleeding edge).
>
> (defun file-size-human-readable (file-size &optional flavor)
> "Produce a string showing FILE-SIZE in human-readable form.
>
> Optional second argument FLAVOR controls the units and the display format:
>
> If FLAVOR is nil or omitted, each kilobyte is 1024 bytes and the produced
> suffixes are \"k\", \"M\", \"G\", \"T\", etc.
> If FLAVOR is `si', each kilobyte is 1000 bytes and the produced suffixes
> are \"k\", \"M\", \"G\", \"T\", etc.
> If FLAVOR is `iec', each kilobyte is 1024 bytes and the produced suffixes
> are \"KiB\", \"MiB\", \"GiB\", \"TiB\", etc."
> (let ((power (if (or (null flavor) (eq flavor 'iec))
> 1024.0
> 1000.0))
> (post-fixes
> ;; none, kilo, mega, giga, tera, peta, exa, zetta, yotta
> (list "" "k" "M" "G" "T" "P" "E" "Z" "Y")))
> (while (and (>= file-size power) (cdr post-fixes))
> (setq file-size (/ file-size power)
> post-fixes (cdr post-fixes)))
> (format "%.0f%s%s" file-size
> (if (and (eq flavor 'iec) (string= (car post-fixes) "k"))
> "K"
> (car post-fixes))
> (if (eq flavor 'iec) "iB" ""))))
The result you obtain is not what is expected (i.e same than
ls -lh)
--8<---------------cut here---------------start------------->8---
ls -l .VirtualBox/Machines/LoseDows.vdi
-rw------- 1 thierry thierry 7141892608 2011-04-07 08:51
.VirtualBox/Machines/LoseDows.vdi
ls -lh .VirtualBox/Machines/LoseDows.vdi
-rw------- 1 thierry thierry 6,7G 2011-04-07 08:51
.VirtualBox/Machines/LoseDows.vdi
(file-size-human-readable 7141892608.0)
"7G"
(anything-ff-human-size 7141892608.0)
"6.7G"
--8<---------------cut here---------------end--------------->8---
--
A+ Thierry
Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997
- Re: Converting an Integer into Human Readable String, (continued)
- Re: Converting an Integer into Human Readable String, Eli Zaretskii, 2011/04/07
- Re: Converting an Integer into Human Readable String, Thierry Volpiatto, 2011/04/07
- Message not available
- Message not available
- Re: Converting an Integer into Human Readable String, Thierry Volpiatto, 2011/04/08
- Re: Converting an Integer into Human Readable String, Eli Zaretskii, 2011/04/08
- Re: Converting an Integer into Human Readable String, Thierry Volpiatto, 2011/04/08
Re: Converting an Integer into Human Readable String, Pascal J. Bourguignon, 2011/04/08
Re: Converting an Integer into Human Readable String, Eli Zaretskii, 2011/04/09
Message not available