(_auth_lb_writelines): New function.

@@ -110,7 +110,46 @@ _auth_lb_readline (struct _line_buffer *s, const char *ptr, size_t size)
     size = p - s->buffer + 1;
   return _auth_lb_read (s, ptr, size);
 }
-  
+
+int
+_auth_lb_writelines (struct _line_buffer *s, const char *iptr, size_t isize,
+		     off_t offset,
+		     int (*wr) (void *data, char *start, char *end),
+		     void *data,
+		     size_t *nbytes)
+{
+  if (s->level > 2)
+    {
+      char *start, *end;
+      
+      for (start = s->buffer, end = strchr (start, '\n');
+	   end && end < s->buffer + s->level;
+	   start = end + 1, end = strchr (start, '\n'))
+	if (end[-1] == '\r')
+	  {
+	    int rc = wr (data, start, end);
+	    if (rc)
+	      return rc;
+	  }
+
+      if (start > s->buffer)
+	{
+	  if (start < s->buffer + s->level)
+	    {
+	      int rest = s->buffer + s->level - start + 1;
+	      memmove (s->buffer, start, rest);
+	      s->level = rest;
+	    }
+	  else 
+	    s->level = 0;
+	}
+    }
+
+  if (nbytes)
+    *nbytes = isize;
+  return 0;
+}
+
 int
 _auth_lb_level (struct _line_buffer *s)
 {

+/* GNU Mailutils -- a suite of utilities for electronic mail
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA  */
+
 struct _line_buffer;
 
-int _auth_lb_create (struct _line_buffer **s);
-void _auth_lb_destroy (struct _line_buffer **s);
-void _auth_lb_drop (struct _line_buffer *s);
+int _auth_lb_create __P((struct _line_buffer **s));
+void _auth_lb_destroy __P((struct _line_buffer **s));
+void _auth_lb_drop __P((struct _line_buffer *s));
 
-int _auth_lb_grow (struct _line_buffer *s, const char *ptr, size_t size);
-int _auth_lb_read (struct _line_buffer *s, const char *ptr, size_t size);
-int _auth_lb_readline (struct _line_buffer *s, const char *ptr, size_t size);
-int _auth_lb_level (struct _line_buffer *s);
-char *_auth_lb_data (struct _line_buffer *s);
+int _auth_lb_grow __P((struct _line_buffer *s, const char *ptr, size_t size));
+int _auth_lb_read __P((struct _line_buffer *s, const char *ptr, size_t size));
+int _auth_lb_readline __P((struct _line_buffer *s, const char *ptr,
+			   size_t size));
+int _auth_lb_writelines __P((struct _line_buffer *s, const char *iptr,
+			     size_t isize, off_t offset,
+			     int (*wr) __PMT ((void *data, char *start,
+					       char *end)),
+			     void *data, size_t *nbytes));
+int _auth_lb_level __P((struct _line_buffer *s));
+char *_auth_lb_data __P((struct _line_buffer *s));