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Re: suggestion: function: buffer-bytes
From: |
T. V. Raman |
Subject: |
Re: suggestion: function: buffer-bytes |
Date: |
Sun, 1 Jul 2007 10:47:08 -0700 |
So someone on the g-client group originally proposed computing
the length of buffer-string using string-encoding; I proposed
using position-bytes as a simpler alternative.
>>>>> "Kenichi" == Kenichi Handa <address@hidden> writes:
Kenichi> In article
Kenichi> <address@hidden>,
Kenichi> "T. V. Raman" <address@hidden> writes:
>> Package g-client
>> http://emacspeak.googlecode.com/svn/trunk/lisp/g-client
Kenichi>
>> I use curl to talk HTTP in that package -- uses Atom
>> Publishing Protocol to talk to servers -- and I needed the
>> byte count for computing HTTP headers correctly. It does
>> appear to work, but also because I do set buffer-encoding
>> appropriately in those buffers where I am building up the
>> HTTP message being posted. buffer-size definitely bombs
>> in that use case -- do you have a better suggestion for
>> how one might count bytes?
Kenichi>
Kenichi> Then perhaps what you need is this.
Kenichi>
Kenichi> (defun buffer-encoded-size (&optional buffer coding)
Kenichi> "Return the encoded size of the current byffer in
Kenichi> bytes. ..." (save-excursion (and buffer
Kenichi> (set-buffer buffer)) (or coding (setq coding
Kenichi> buffer-file-coding-system)) (length
Kenichi> (encode-coding-string (buffer-string) coding))))
Kenichi>
Kenichi> In emacs-unicode-2, you can use a little bit faster
Kenichi> version.
Kenichi>
Kenichi> (defun buffer-encoded-size (&optional buffer coding)
Kenichi> "Return the encoded size of the current byffer in
Kenichi> bytes. ..." (save-excursion (and buffer
Kenichi> (set-buffer buffer)) (or coding (setq coding
Kenichi> buffer-file-coding-system)) (length
Kenichi> (encode-coding-region (point-min) (point-max) coding
Kenichi> t))))
Kenichi>
Kenichi> --- Kenichi Handa address@hidden
Kenichi>
Kenichi>
Kenichi> _______________________________________________
Kenichi> Emacs-devel mailing list address@hidden
Kenichi> http://lists.gnu.org/mailman/listinfo/emacs-devel
--
Best Regards,
--raman
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Re: suggestion: function: buffer-bytes, Eli Zaretskii, 2007/07/01