1 files changed, 103 insertions, 0 deletions
diff --git a/lib/pdf/object.cc b/lib/pdf/object.cc
new file mode 100644
index 0000000..dba25da
--- /dev/null
+++ b/lib/pdf/object.cc
@@ -0,0 +1,103 @@
+//  object.cc -- PDF objects
+//  Copyright (C) 2008  SEIKO EPSON CORPORATION
+//
+//  This file is part of the 'iscan' program.
+//
+//  The 'iscan' program is free-ish software.
+//  You can redistribute it and/or modify it under the terms of the GNU
+//  General Public License as published by the Free Software Foundation;
+//  either version 2 of the License or at your option any later version.
+//
+//  This program is distributed in the hope that it will be useful, but
+//  WITHOUT ANY WARRANTY;  without even the implied warranty of FITNESS
+//  FOR A PARTICULAR PURPOSE or MERCHANTABILITY.
+//  See the GNU General Public License for more details.
+//
+//  You should have received a verbatim copy of the GNU General Public
+//  License along with this program; if not, write to:
+//
+//      Free Software Foundation, Inc.
+//      59 Temple Place, Suite 330
+//      Boston, MA  02111-1307  USA
+//
+//  As a special exception, the copyright holders give permission
+//  to link the code of this program with the esmod library and
+//  distribute linked combinations including the two.  You must obey
+//  the GNU General Public License in all respects for all of the
+//  code used other than esmod.
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "object.hh"
+
+#include <stdexcept>
+
+namespace iscan
+{
+
+namespace pdf
+{
+
+
+object::object ()
+{
+  _obj_num = 0;
+}
+
+object::object (size_t num)
+{
+  // FIXME: what if num has already been used?
+  _obj_num = num;
+}
+
+object::~object (void)
+{
+}
+
+size_t
+object::obj_num ()
+{
+  if (65535 == next_obj_num)
+    {
+      throw std::runtime_error ("PDF object number overflow");
+    }
+
+  if (is_direct ())
+    {
+      _obj_num = ++next_obj_num;
+    }
+  return _obj_num;
+}
+
+bool
+object::operator== (object& that) const
+{
+  // FIXME: what if one or both instances have not gotten an object
+  //        number yet?
+  return _obj_num == that._obj_num;
+}
+
+void
+object::print (FILE* fp) const
+{
+  fprintf (fp, "%zu 0 R", _obj_num);
+}
+
+bool
+object::is_direct () const
+{
+  return (0 == _obj_num);
+}
+
+size_t object::next_obj_num = 0;
+
+void object::reset_object_numbers ()
+{
+  next_obj_num = 0;
+}
+
+}       // namespace pdf
+}       // namespace iscan