QPDFNumberTreeObjectHelper.cc
2.71 KB
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
104
105
106
107
108
109
110
111
112
113
114
115
#include <qpdf/QPDFNumberTreeObjectHelper.hh>
#include <qpdf/NNTree.hh>
class NumberTreeDetails: public NNTreeDetails
{
public:
virtual std::string const& itemsKey() const override
{
static std::string k("/Nums");
return k;
}
virtual bool keyValid(QPDFObjectHandle oh) const override
{
return oh.isInteger();
}
virtual int compareKeys(
QPDFObjectHandle a, QPDFObjectHandle b) const override
{
if (! (keyValid(a) && keyValid(b)))
{
// We don't call this without calling keyValid first
throw std::logic_error("comparing invalid keys");
}
auto as = a.getIntValue();
auto bs = b.getIntValue();
return ((as < bs) ? -1 : (as > bs) ? 1 : 0);
}
};
static NumberTreeDetails number_tree_details;
QPDFNumberTreeObjectHelper::Members::~Members()
{
}
QPDFNumberTreeObjectHelper::Members::Members(QPDFObjectHandle& oh) :
impl(std::make_shared<NNTreeImpl>(number_tree_details, nullptr, oh, false))
{
}
QPDFNumberTreeObjectHelper::QPDFNumberTreeObjectHelper(QPDFObjectHandle oh) :
QPDFObjectHelper(oh),
m(new Members(oh))
{
}
QPDFNumberTreeObjectHelper::numtree_number
QPDFNumberTreeObjectHelper::getMin()
{
auto i = this->m->impl->begin();
if (i == this->m->impl->end())
{
return 0;
}
return (*i).first.getIntValue();
}
QPDFNumberTreeObjectHelper::numtree_number
QPDFNumberTreeObjectHelper::getMax()
{
auto i = this->m->impl->last();
if (i == this->m->impl->end())
{
return 0;
}
return (*i).first.getIntValue();
}
bool
QPDFNumberTreeObjectHelper::hasIndex(numtree_number idx)
{
auto i = this->m->impl->find(QPDFObjectHandle::newInteger(idx));
return (i != this->m->impl->end());
}
bool
QPDFNumberTreeObjectHelper::findObject(
numtree_number idx, QPDFObjectHandle& oh)
{
auto i = this->m->impl->find(QPDFObjectHandle::newInteger(idx));
if (i == this->m->impl->end())
{
return false;
}
oh = (*i).second;
return true;
}
bool
QPDFNumberTreeObjectHelper::findObjectAtOrBelow(
numtree_number idx, QPDFObjectHandle& oh,
numtree_number& offset)
{
auto i = this->m->impl->find(QPDFObjectHandle::newInteger(idx), true);
if (i == this->m->impl->end())
{
return false;
}
oh = (*i).second;
offset = idx - (*i).first.getIntValue();
return true;
}
std::map<QPDFNumberTreeObjectHelper::numtree_number, QPDFObjectHandle>
QPDFNumberTreeObjectHelper::getAsMap() const
{
std::map<numtree_number, QPDFObjectHandle> result;
for (auto i: *(this->m->impl))
{
result.insert(
std::make_pair(i.first.getIntValue(),
i.second));
}
return result;
}