[Mailman-i18n] Unicode in headers

[Dan Ohnesorg]

Dne Sun, Sep 22, 2002 at 02:52:08PM +0900, Tokio Kikuchi napsal:

> >- are there only ASCII characters =3D OK let it be
> >- are there only characters from locale preferred encoding =3D use loc=
ale
> >encoding
>=20
> I like this idea but how do you define email's preferred language.
> In mailman, it will be mm_cfg.DEFAULT_SERVER_LANGUAGE but ,,,

It is very good solved in mutt, in file sendlib.c, line 800 and above. I
send also comments from the file. In mutt I have a variable, which has li=
st
of encodings in orded of preference:

/*
 * Find the best charset conversion of the file from fromcode into one
 * of the tocodes. If successful, set *tocode and CONTENT *info and
 * return the number of characters converted inexactly. If no
 * conversion was possible, return -1.
 *
 * We convert via UTF-8 in order to avoid the condition -1(EINVAL),
 * which would otherwise prevent us from knowing the number of inexact
 * conversions. Where the candidate target charset is UTF-8 we avoid
 * doing the second conversion because iconv_open("UTF-8", "UTF-8")
 * fails with some libraries.
 *
 * We assume that the output from iconv is never more than 4 times as
 * long as the input for any pair of charsets we might be interested
 * in.
 */


/*
 * Find the first of the fromcodes that gives a valid conversion and
 * the best charset conversion of the file into one of the tocodes. If
 * successful, set *fromcode and *tocode to dynamically allocated
 * strings, set CONTENT *info, and return the number of characters
 * converted inexactly. If no conversion was possible, return -1.
 *
 * Both fromcodes and tocodes may be colon-separated lists of charsets.
 * However, if fromcode is zero then fromcodes is assumed to be the
 * name of a single charset even if it contains a colon.
 */

cheers
dan



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