filter subsystem: bugfixes.

* include/mailutils/sys/filter.h (_mu_filter_stream)<eof>: New member.
* libmailutils/filter/binflt.c (_bit8_filter): Change name initializer
to "8bit".
(_bit7_filter): Change name initializer to "7bit".
* libmailutils/filter/filter.c (mu_filter_create): Limit line
length for encoding streams only.
* libmailutils/stream/fltstream.c (filter_read): Use fs->eof instead
of the regular stream EOF marker.
* libmailutils/stream/stream.c (mu_stream_eof): Bugfix: take into
account eventual buffered data.
(_stream_read_unbuffered): Call mu_stream_eof instead of checking
the _MU_STR_EOF bit.

@@ -41,6 +41,7 @@ struct _mu_filter_stream
   struct _mu_stream stream;
   mu_stream_t transport;
   int mode;
+  int eof;
   
   struct _mu_filter_buffer inbuf, outbuf;
   mu_filter_xcode_t xcode;

@@ -93,7 +93,7 @@ mu_filter_record_t mu_binary_filter = &_binary_filter;
 
 
 static struct _mu_filter_record _bit8_filter = {
-  "bit8",
+  "8bit",
   0,
   NULL,
   _copy_codec,
@@ -103,7 +103,7 @@ static struct _mu_filter_record _bit8_filter = {
 mu_filter_record_t mu_bit8_filter = &_bit8_filter;
 
 static struct _mu_filter_record _bit7_filter = {
-  "bit7",
+  "7bit",
   0,
   NULL,
   _bit7_coder,

@@ -182,7 +182,7 @@ mu_filter_create (mu_stream_t *pstream, mu_stream_t stream, const char *name,
 
   status = ((flags & MU_STREAM_WRITE) ? filter_create_wr : filter_create_rd)
                    (pstream, stream,
-		    frec->max_line_length,
+		    mode == MU_FILTER_ENCODE ? frec->max_line_length : 0,
 		    mode,
 		    mode == MU_FILTER_ENCODE ? frec->encoder : frec->decoder,
 		    xdata,

@@ -128,6 +128,9 @@ filter_read (mu_stream_t stream, char *buf, size_t size, size_t *pret)
 	  enum mu_filter_result res;
 	  int rc;
 
+	  if (fs->eof)
+	    break;
+	  
 	  if (MFB_RDBYTES (fs->inbuf) < min_input_level && !again)
 	    {
 	      rc = MFB_require (&fs->inbuf, min_input_level);
@@ -174,7 +177,7 @@ filter_read (mu_stream_t stream, char *buf, size_t size, size_t *pret)
 	      again = 0;
 	      if (cmd == mu_filter_lastbuf || iobuf.eof)
 		{
-		  _mu_stream_seteof (stream);
+		  fs->eof = 1;
 		  stop = 1;
 		}
 	      break;
@@ -517,8 +520,10 @@ mu_filter_stream_create (mu_stream_t *pflt,
   fs->xcode = xcode;
   fs->xdata = xdata;
   fs->mode = mode;
+  fs->eof = 0;
   
-  mu_stream_set_buffer ((mu_stream_t) fs, mu_buffer_full, MU_FILTER_BUF_SIZE);
+  mu_stream_set_buffer ((mu_stream_t) fs, mu_buffer_full,
+			MU_FILTER_BUF_SIZE);
 
   rc = filter_stream_init (fs);
   if (rc)

@@ -368,7 +368,7 @@ mu_stream_clearerr (mu_stream_t stream)
 int
 mu_stream_eof (mu_stream_t stream)
 {
-  return stream->flags & _MU_STR_EOF;
+  return (stream->flags & _MU_STR_EOF) && (stream->pos == stream->level);
 }
 
 int
@@ -589,7 +589,7 @@ _stream_read_unbuffered (mu_stream_t stream, void *buf, size_t size,
   if (stream->flags & _MU_STR_ERR)
     return stream->last_err;
     
-  if ((stream->flags & _MU_STR_EOF) || size == 0)
+  if (mu_stream_eof (stream) || size == 0)
     {
       if (pnread)
 	*pnread = 0;