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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSGDB_XML_PARSER
#define OSGDB_XML_PARSER 1
#include <osgDB/Registry>
namespace osgDB {
// forward declare
class XmlNode;
/** read an Xml file, find the file in Options DataFilePathList.*/
extern OSGDB_EXPORT XmlNode* readXmlFile(const std::string& filename,const Options* options);
/** read an Xml file, find the file in osgDB::Registry's eaderWriter::Options DataFilePathList.*/
inline XmlNode* readXmlFile(const std::string& filename)
{
return readXmlFile(filename, osgDB::Registry::instance()->getOptions());
}
/** read an Xml from from an istream.*/
extern OSGDB_EXPORT XmlNode* readXmlStream(std::istream& fin);
extern OSGDB_EXPORT std::string trimEnclosingSpaces(const std::string& str);
/** XmlNode class for very basic reading and writing of xml files.*/
class OSGDB_EXPORT XmlNode : public osg::Referenced
{
public:
XmlNode();
enum NodeType
{
UNASSIGNED,
ATOM,
NODE,
GROUP,
ROOT,
COMMENT,
INFORMATION
};
typedef std::map< std::string, std::string > Properties;
typedef std::vector< osg::ref_ptr<XmlNode> > Children;
NodeType type;
std::string name;
std::string contents;
Properties properties;
Children children;
std::string getTrimmedContents() const { return trimEnclosingSpaces(contents); }
public:
class OSGDB_EXPORT ControlMap
{
public:
ControlMap();
typedef std::map< std::string, int > ControlToCharacterMap;
typedef std::map< int, std::string> CharacterToControlMap;
void addControlToCharacter(const std::string& control, int c);
ControlToCharacterMap _controlToCharacterMap;
CharacterToControlMap _characterToControlMap;
private:
void setUpControlMappings();
};
class OSGDB_EXPORT Input : public ControlMap
{
public:
Input();
Input(const Input&);
~Input();
typedef std::string::size_type size_type;
void open(const std::string& filename);
void attach(std::istream& istream);
void readAllDataIntoBuffer();
operator bool () const { return _currentPos<_buffer.size(); }
size_type currentPosition() const { return _currentPos; }
int get() { if (_currentPos<_buffer.size()) return static_cast<unsigned char>(_buffer[_currentPos++]); else return -1; }
int operator [] (size_type i) const { if ((_currentPos+i)<_buffer.size()) return static_cast<unsigned char>(_buffer[_currentPos+i]); else return -1; }
void operator ++ () { if (_currentPos<_buffer.size()) ++_currentPos; }
void operator += (size_type n) { if ((_currentPos+n)<_buffer.size()) _currentPos+=n; else _currentPos = _buffer.size(); }
void skipWhiteSpace();
std::string substr(size_type pos, size_type n=std::string::npos) { return (_currentPos<_buffer.size()) ? _buffer.substr(_currentPos+pos,n) : std::string(); }
size_type find(const std::string& str)
{
if (_currentPos<_buffer.size())
{
size_type pos = _buffer.find(str, _currentPos);
if (pos==std::string::npos) return std::string::npos;
else return pos-_currentPos;
} else return std::string::npos;
}
bool match(const std::string& str) { return (_currentPos<_buffer.size()) ? _buffer.compare(_currentPos, str.size(), str)==0 : false; }
enum Encoding
{
ENCODING_ASCII,
ENCODING_UTF8
};
void setEncoding(Encoding encoding) { _encoding = encoding; }
Encoding getEncoding() const { return _encoding; }
inline void copyCharacterToString(std::string& str)
{
if (_currentPos>=_buffer.size()) return;
switch (_encoding)
{
case(ENCODING_UTF8) :
{
int char0 = static_cast<unsigned char>(_buffer[_currentPos]); ++_currentPos;
str.push_back(char0);
if (char0 < 0x80 || _currentPos>=_buffer.size()) break; // 1-byte character
str.push_back(_buffer[_currentPos]); ++_currentPos;
if (char0<0xe0 || _currentPos<_buffer.size()) break; // 2-byte character
str.push_back(_buffer[_currentPos]); ++_currentPos;
if (char0<0xf0 || _currentPos>=_buffer.size()) break; // 3-byte character
str.push_back(_buffer[_currentPos]); ++_currentPos;
if (char0<0xf8 || _currentPos>=_buffer.size()) break; // 4-byte character
if (_currentPos>=_buffer.size()) break;
str.push_back(_buffer[_currentPos]); ++_currentPos; // 5-byte character?
break;
}
case(ENCODING_ASCII) :
default:
str.push_back(_buffer[_currentPos]);
++_currentPos;
return;
}
}
private:
size_type _currentPos;
std::ifstream _fin;
std::string _buffer;
Encoding _encoding;
};
bool read(Input& input);
bool write(std::ostream& fout, const std::string& indent = "") const;
bool write(const ControlMap& controlMap, std::ostream& fout, const std::string& indent = "") const;
bool writeString(const ControlMap& controlMap, std::ostream& fout, const std::string& str) const;
protected:
bool writeChildren(const ControlMap& controlMap, std::ostream& fout, const std::string& indent) const;
bool writeProperties(const ControlMap& controlMap, std::ostream& fout) const;
bool readAndReplaceControl(std::string& in_contents, Input& input) const;
};
}
#endif
|
