[gmime-devel] Problem with GMimeFilterGZip

[Jorge Ventura <jorge araujo ventura gmail com>]

I don't know why but the GZip filter doesn't process the string completely. I have a base64 filter and gzip. If I remove the gzip everything works as expected and the base64 represents the original text but with the gzip the result is inconsistent.

  

string zip_b64(string s)
{
   const char *filename = "z002.txt.gz";
   GMimeStream *stream_out, *stream_filter_out;
   GMimeFilter *gzip_filter, *b64_filter, *dos2unix_filter;
   GByteArray *array;
   array = g_byte_array_sized_new(s.size());
   /* Stream / Filter setup */
   stream_out = g_mime_stream_mem_new_with_byte_array(array);
   g_mime_stream_mem_set_owner ((GMimeStreamMem *) stream_out, FALSE);
   stream_filter_out = g_mime_stream_filter_new(stream_out);
   /* zip filter */
   gzip_filter = g_mime_filter_gzip_new (GMIME_FILTER_GZIP_MODE_ZIP, 9);
   g_mime_filter_gzip_set_filename ((GMimeFilterGZip *) gzip_filter, filename);
   g_mime_stream_filter_add ((GMimeStreamFilter *) stream_filter_out, gzip_filter);

   /* b64 filter */
   b64_filter = g_mime_filter_basic_new(GMIME_CONTENT_ENCODING_BASE64, TRUE);
   g_mime_stream_filter_add ((GMimeStreamFilter *) stream_filter_out, b64_filter);
   g_mime_stream_write(stream_filter_out, s.c_str(), s.size());
   g_mime_stream_flush (stream_filter_out);
   string res((char*)array->data, g_mime_stream_length((GMimeStream*)stream_out));
   //======================================================================
   g_mime_filter_reset (b64_filter);
   g_mime_filter_reset (gzip_filter);
   g_object_unref (b64_filter);
   g_object_unref (gzip_filter);
   g_object_unref (stream_out);
   g_byte_array_unref (array);
   return res;
}

The result is inreality incomplete, it's missing 2 lines at the bottom.
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Sincerely,

J. Ventura