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
|
// ----------------------------------------------------------------------------
// Copyright (C) 2002-2006 Marcin Kalicinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see www.boost.org
// ----------------------------------------------------------------------------
#ifndef BOOST_PROPERTY_TREE_DETAIL_XML_PARSER_WRITE_HPP_INCLUDED
#define BOOST_PROPERTY_TREE_DETAIL_XML_PARSER_WRITE_HPP_INCLUDED
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/detail/xml_parser_utils.hpp>
#include <string>
#include <ostream>
#include <iomanip>
namespace boost { namespace property_tree { namespace xml_parser
{
template<class Ch>
void write_xml_indent(std::basic_ostream<Ch> &stream,
int indent,
const xml_writer_settings<Ch> & settings
)
{
stream << std::basic_string<Ch>(indent * settings.indent_count, settings.indent_char);
}
template<class Ch>
void write_xml_comment(std::basic_ostream<Ch> &stream,
const std::basic_string<Ch> &s,
int indent,
bool separate_line,
const xml_writer_settings<Ch> & settings
)
{
typedef typename std::basic_string<Ch> Str;
if (separate_line)
write_xml_indent(stream,indent,settings);
stream << Ch('<') << Ch('!') << Ch('-') << Ch('-');
stream << s;
stream << Ch('-') << Ch('-') << Ch('>');
if (separate_line)
stream << Ch('\n');
}
template<class Ch>
void write_xml_text(std::basic_ostream<Ch> &stream,
const std::basic_string<Ch> &s,
int indent,
bool separate_line,
const xml_writer_settings<Ch> & settings
)
{
if (separate_line)
write_xml_indent(stream,indent,settings);
stream << encode_char_entities(s);
if (separate_line)
stream << Ch('\n');
}
template<class Ptree>
void write_xml_element(std::basic_ostream<typename Ptree::key_type::value_type> &stream,
const std::basic_string<typename Ptree::key_type::value_type> &key,
const Ptree &pt,
int indent,
const xml_writer_settings<typename Ptree::key_type::value_type> & settings)
{
typedef typename Ptree::key_type::value_type Ch;
typedef typename std::basic_string<Ch> Str;
typedef typename Ptree::const_iterator It;
bool want_pretty = settings.indent_count > 0;
// Find if elements present
bool has_elements = false;
bool has_attrs_only = pt.data().empty();
for (It it = pt.begin(), end = pt.end(); it != end; ++it)
{
if (it->first != xmlattr<Ch>() )
{
has_attrs_only = false;
if (it->first != xmltext<Ch>())
{
has_elements = true;
break;
}
}
}
// Write element
if (pt.data().empty() && pt.empty()) // Empty key
{
if (indent >= 0)
{
write_xml_indent(stream,indent,settings);
stream << Ch('<') << key <<
Ch('/') << Ch('>');
if (want_pretty)
stream << Ch('\n');
}
}
else // Nonempty key
{
// Write opening tag, attributes and data
if (indent >= 0)
{
// Write opening brace and key
write_xml_indent(stream,indent,settings);
stream << Ch('<') << key;
// Write attributes
if (optional<const Ptree &> attribs = pt.get_child_optional(xmlattr<Ch>()))
for (It it = attribs.get().begin(); it != attribs.get().end(); ++it)
stream << Ch(' ') << it->first << Ch('=') <<
Ch('"') << it->second.template get_value<std::basic_string<Ch> >() << Ch('"');
if ( has_attrs_only )
{
// Write closing brace
stream << Ch('/') << Ch('>');
if (want_pretty)
stream << Ch('\n');
}
else
{
// Write closing brace
stream << Ch('>');
// Break line if needed and if we want pretty-printing
if (has_elements && want_pretty)
stream << Ch('\n');
}
}
// Write data text, if present
if (!pt.data().empty())
write_xml_text(stream,
pt.template get_value<std::basic_string<Ch> >(),
indent + 1, has_elements && want_pretty, settings);
// Write elements, comments and texts
for (It it = pt.begin(); it != pt.end(); ++it)
{
if (it->first == xmlattr<Ch>())
continue;
else if (it->first == xmlcomment<Ch>())
write_xml_comment(stream,
it->second.template get_value<std::basic_string<Ch> >(),
indent + 1, want_pretty, settings);
else if (it->first == xmltext<Ch>())
write_xml_text(stream,
it->second.template get_value<std::basic_string<Ch> >(),
indent + 1, has_elements && want_pretty, settings);
else
write_xml_element(stream, it->first, it->second,
indent + 1, settings);
}
// Write closing tag
if (indent >= 0 && !has_attrs_only)
{
if (has_elements)
write_xml_indent(stream,indent,settings);
stream << Ch('<') << Ch('/') << key << Ch('>');
if (want_pretty)
stream << Ch('\n');
}
}
}
template<class Ptree>
void write_xml_internal(std::basic_ostream<typename Ptree::key_type::value_type> &stream,
const Ptree &pt,
const std::string &filename,
const xml_writer_settings<typename Ptree::key_type::value_type> & settings)
{
typedef typename Ptree::key_type::value_type Ch;
typedef typename std::basic_string<Ch> Str;
stream << detail::widen<Ch>("<?xml version=\"1.0\" encoding=\"")
<< settings.encoding
<< detail::widen<Ch>("\"?>\n");
write_xml_element(stream, Str(), pt, -1, settings);
if (!stream)
BOOST_PROPERTY_TREE_THROW(xml_parser_error("write error", filename, 0));
}
} } }
#endif
|
Swift