blob: dba25daf699a3ceaff8ba62dcc1e3e3ef1a9b4e3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
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
|
