In the LazarusMailingListReader, I am decompressing the downloaded gzip
mail archives by using the Abbrevia package. This is working fine in
Windows, but Linux rejects to compile the package due to an "identifier
nl_langinfo not found" error in this procedure of unit AbCharset:
function AbSysCharSetIsUTF8: Boolean;
begin
{$IFDEF DARWIN}
Result := True;
{$ENDIF}
{$IFDEF MSWINDOWS}
Result := False;
{$ENDIF}
{$IFDEF LINUX}
Result := StrComp(nl_langinfo(_NL_CTYPE_CODESET_NAME), 'UTF-8') = 0;
{$ENDIF}
end;
As I found out "nl_langinfo" belongs to libc, and in fact, this can be
activated by a define in the package, but this in turn causes other
compilation errors. My question: Is there a funtion in the standard fpc
units with the same functionality?
Another question: I would prefer to avoid Abbrevia altogether and use
the standard zip support in fpc. There are examples in the wiki on how
to use the TDecompressionStream for inflating gzip files. But I always
get a "data error"at least with the mailinglist archive files from
http://lists.lazarus.freepascal.org/pipermail/lazarus/. If I use a
TGZFileStream instead of the TDecompressionStream by a TGZFileStream,
then the file decompresses fine. But this is not a good solution as I
would have to use temporary files which I want to avoid. How can the
TGZFileStream be modified such that it accepts a stream as input
parameter instead of a filename?
--
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