Re: Converting UTF-8 strings to hex in Emacs

[Harald Hanche-Olsen]

+ 白い熊 <address@hidden>:

> I'm looking for the Emacs way to convert UTF-8 strings to Hex, so they
> can be sent as hex codes to modem AT commands.

This is the emacs developer list; I think such questions are not too
welcome here. Still, I'll risk the ire of the regulars by responding.

> There's uni2ascii which does this, and I can call it via a call-process,
> however would like to do it in elisp.

Something along the lines of

(defun string-to-numeric (string)
  (let (nums)
    (dotimes (n (length string) (apply #'concat (nreverse nums)))
      (setq nums (cons (format "%d;" (aref string n))
                       nums)))))

might work; you'll have to adjust the format string to give the
desired format (I haven't the foggiest notion what uni2ascii
produces). Warning: This only works on modern emacsen for which
unicode is the internal encoding. for compatibility with older ones,
an extra function call will be needed (but I don't know which).

- Harald