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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "../../include/fpdfdoc/fpdf_doc.h"
#include "../../include/fxcrt/fx_xml.h"
typedef struct _PDFDOC_METADATA {
CPDF_Document *m_pDoc;
CXML_Element *m_pXmlElmnt;
CXML_Element *m_pElmntRdf;
CFX_CMapByteStringToPtr *m_pStringMap;
} PDFDOC_METADATA, * PDFDOC_LPMETADATA;
typedef PDFDOC_METADATA const * PDFDOC_LPCMETADATA;
const FX_CHAR* const gs_FPDFDOC_Metadata_Titles[] = {
"Title", "title",
"Subject", "description",
"Author", "creator",
"Keywords", "Keywords",
"Producer", "Producer",
"Creator", "CreatorTool",
"CreationDate", "CreateDate",
"ModDate", "ModifyDate",
"MetadataDate", "MetadataDate"
};
CPDF_Metadata::CPDF_Metadata()
{
m_pData = FX_Alloc(PDFDOC_METADATA, 1);
CFX_CMapByteStringToPtr *&pStringMap = ((PDFDOC_LPMETADATA)m_pData)->m_pStringMap;
pStringMap = FX_NEW CFX_CMapByteStringToPtr;
if (pStringMap != NULL) {
CFX_ByteString bstr;
for (int i = 0; i < 18; i += 2) {
bstr = gs_FPDFDOC_Metadata_Titles[i];
pStringMap->AddValue(bstr, (void*)gs_FPDFDOC_Metadata_Titles[i + 1]);
}
}
}
CPDF_Metadata::~CPDF_Metadata()
{
FXSYS_assert(m_pData != NULL);
CXML_Element *&p = ((PDFDOC_LPMETADATA)m_pData)->m_pXmlElmnt;
delete p;
CFX_CMapByteStringToPtr *pStringMap = ((PDFDOC_LPMETADATA)m_pData)->m_pStringMap;
if (pStringMap) {
pStringMap->RemoveAll();
delete pStringMap;
}
FX_Free(m_pData);
}
void CPDF_Metadata::LoadDoc(CPDF_Document *pDoc)
{
FXSYS_assert(pDoc != NULL);
((PDFDOC_LPMETADATA)m_pData)->m_pDoc = pDoc;
CPDF_Dictionary *pRoot = pDoc->GetRoot();
CPDF_Stream *pStream = pRoot->GetStream(FX_BSTRC("Metadata"));
if (!pStream) {
return;
}
CPDF_StreamAcc acc;
acc.LoadAllData(pStream, FALSE);
int size = acc.GetSize();
const uint8_t* pBuf = acc.GetData();
CXML_Element *&pXmlElmnt = ((PDFDOC_LPMETADATA)m_pData)->m_pXmlElmnt;
pXmlElmnt = CXML_Element::Parse(pBuf, size);
if (!pXmlElmnt) {
return;
}
CXML_Element *&pElmntRdf = ((PDFDOC_LPMETADATA)m_pData)->m_pElmntRdf;
if (pXmlElmnt->GetTagName() == FX_BSTRC("RDF")) {
pElmntRdf = pXmlElmnt;
} else {
pElmntRdf = pXmlElmnt->GetElement(NULL, FX_BSTRC("RDF"));
}
}
int32_t CPDF_Metadata::GetString(const CFX_ByteStringC& bsItem, CFX_WideString &wsStr)
{
if (!((PDFDOC_LPMETADATA)m_pData)->m_pXmlElmnt) {
return -1;
}
if (!((PDFDOC_LPMETADATA)m_pData)->m_pStringMap) {
return -1;
}
void *szTag;
if (!((PDFDOC_LPMETADATA)m_pData)->m_pStringMap->Lookup(bsItem, szTag)) {
return -1;
}
CFX_ByteString bsTag = (const FX_CHAR*)szTag;
wsStr = L"";
CXML_Element *pElmntRdf = ((PDFDOC_LPMETADATA)m_pData)->m_pElmntRdf;
if (!pElmntRdf) {
return -1;
}
int nChild = pElmntRdf->CountChildren();
for (int i = 0; i < nChild; i++) {
CXML_Element *pTag = pElmntRdf->GetElement(NULL, FX_BSTRC("Description"), i);
if (!pTag) {
continue;
}
if (bsItem == FX_BSTRC("Title") || bsItem == FX_BSTRC("Subject")) {
CXML_Element *pElmnt = pTag->GetElement(NULL, bsTag);
if (!pElmnt) {
continue;
}
pElmnt = pElmnt->GetElement(NULL, FX_BSTRC("Alt"));
if (!pElmnt) {
continue;
}
pElmnt = pElmnt->GetElement(NULL, FX_BSTRC("li"));
if (!pElmnt) {
continue;
}
wsStr = pElmnt->GetContent(0);
return wsStr.GetLength();
} else if (bsItem == FX_BSTRC("Author")) {
CXML_Element *pElmnt = pTag->GetElement(NULL, bsTag);
if (!pElmnt) {
continue;
}
pElmnt = pElmnt->GetElement(NULL, FX_BSTRC("Seq"));
if (!pElmnt) {
continue;
}
pElmnt = pElmnt->GetElement(NULL, FX_BSTRC("li"));
if (!pElmnt) {
continue;
}
wsStr = pElmnt->GetContent(0);
return wsStr.GetLength();
} else {
CXML_Element *pElmnt = pTag->GetElement(NULL, bsTag);
if (!pElmnt) {
continue;
}
wsStr = pElmnt->GetContent(0);
return wsStr.GetLength();
}
}
return -1;
}
CXML_Element* CPDF_Metadata::GetRoot() const
{
return ((PDFDOC_LPMETADATA)m_pData)->m_pXmlElmnt;
}
CXML_Element* CPDF_Metadata::GetRDF() const
{
return ((PDFDOC_LPMETADATA)m_pData)->m_pElmntRdf;
}
|
