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Ok, I've found a workaround for this behavior.
1. It seems that the iconv returns errno ERANGE in case of that german
umlaut character, if source encoding is set to UTF-8. So I added this ERANGE
error code to the last if block "if (errno == EINVAL || errno == EILSEQ ||
errno == ERANGE)". In that
case we do not run into an infinite loop.
But this is not the correct solution because the result string contains a
question mark instead the correct german umlaut, so I take a look at the
source charset which are passed to the iconv function and found that the
only source charset tried by gmime was UTF-8. The gmime
library tries to get the local_charset by calling setlocale in gmime-charset.c
(g_mime_charset_map_init) - but this doesn't seem to work on my Windows
environment. The value returned for LC_CTYPE is "German_Germany.1252" which
results in locale = "1252" and this is not a valid iconv charset.
As a bugfix for Windows I add the following lines of code to determine the
current charset via glib.
#ifdef
G_OS_WIN32
g_get_charset(&locale_charset); #else locale = setlocale (LC_ALL, NULL); .
.
.
#endif
Now I get CP1252 which is a correct charset for iconv and now my german
umlaut will be encoded into UTF-8 correctly.
Best regards
B. Pfennigschmidt
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