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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmXMLParser.h"
#include <cmsys/FStream.hxx>
#include <cm_expat.h>
#include <ctype.h>
//----------------------------------------------------------------------------
cmXMLParser::cmXMLParser()
{
this->Parser = 0;
this->ParseError = 0;
}
//----------------------------------------------------------------------------
cmXMLParser::~cmXMLParser()
{
if ( this->Parser )
{
this->CleanupParser();
}
}
//----------------------------------------------------------------------------
int cmXMLParser::Parse(const char* string)
{
return (int)this->InitializeParser() &&
this->ParseChunk(string, strlen(string)) &&
this->CleanupParser();
}
int cmXMLParser::ParseFile(const char* file)
{
if ( !file )
{
return 0;
}
cmsys::ifstream ifs(file);
if ( !ifs )
{
return 0;
}
cmOStringStream str;
str << ifs.rdbuf();
return this->Parse(str.str().c_str());
}
//----------------------------------------------------------------------------
int cmXMLParser::InitializeParser()
{
if ( this->Parser )
{
std::cerr << "Parser already initialized" << std::endl;
this->ParseError = 1;
return 0;
}
// Create the expat XML parser.
this->Parser = XML_ParserCreate(0);
XML_SetElementHandler(static_cast<XML_Parser>(this->Parser),
&cmXMLParserStartElement,
&cmXMLParserEndElement);
XML_SetCharacterDataHandler(static_cast<XML_Parser>(this->Parser),
&cmXMLParserCharacterDataHandler);
XML_SetUserData(static_cast<XML_Parser>(this->Parser), this);
this->ParseError = 0;
return 1;
}
//----------------------------------------------------------------------------
int cmXMLParser::ParseChunk(const char* inputString,
std::string::size_type length)
{
if ( !this->Parser )
{
std::cerr << "Parser not initialized" << std::endl;
this->ParseError = 1;
return 0;
}
int res;
res = this->ParseBuffer(inputString, length);
if ( res == 0 )
{
this->ParseError = 1;
}
return res;
}
//----------------------------------------------------------------------------
int cmXMLParser::CleanupParser()
{
if ( !this->Parser )
{
std::cerr << "Parser not initialized" << std::endl;
this->ParseError = 1;
return 0;
}
int result = !this->ParseError;
if(result)
{
// Tell the expat XML parser about the end-of-input.
if(!XML_Parse(static_cast<XML_Parser>(this->Parser), "", 0, 1))
{
this->ReportXmlParseError();
result = 0;
}
}
// Clean up the parser.
XML_ParserFree(static_cast<XML_Parser>(this->Parser));
this->Parser = 0;
return result;
}
//----------------------------------------------------------------------------
int cmXMLParser::ParseBuffer(const char* buffer, std::string::size_type count)
{
// Pass the buffer to the expat XML parser.
if(!XML_Parse(static_cast<XML_Parser>(this->Parser), buffer,
static_cast<int>(count), 0))
{
this->ReportXmlParseError();
return 0;
}
return 1;
}
//----------------------------------------------------------------------------
int cmXMLParser::ParseBuffer(const char* buffer)
{
return this->ParseBuffer(buffer, static_cast<int>(strlen(buffer)));
}
//----------------------------------------------------------------------------
int cmXMLParser::ParsingComplete()
{
// Default behavior is to parse to end of stream.
return 0;
}
//----------------------------------------------------------------------------
void cmXMLParser::StartElement(const std::string& name,
const char ** /*atts*/)
{
std::cout << "Start element: " << name << std::endl;
}
//----------------------------------------------------------------------------
void cmXMLParser::EndElement(const std::string& name)
{
std::cout << "End element: " << name << std::endl;
}
//----------------------------------------------------------------------------
void cmXMLParser::CharacterDataHandler(const char* /*inData*/,
int /*inLength*/)
{
}
//----------------------------------------------------------------------------
int cmXMLParser::IsSpace(char c)
{
return isspace(c);
}
//----------------------------------------------------------------------------
const char* cmXMLParser::FindAttribute(const char** atts,
const char* attribute)
{
if(atts && attribute)
{
for(const char** a = atts; *a && *(a+1); a += 2)
{
if(strcmp(*a, attribute) == 0)
{
return *(a+1);
}
}
}
return 0;
}
//----------------------------------------------------------------------------
void cmXMLParserStartElement(void* parser, const char *name,
const char **atts)
{
// Begin element handler that is registered with the XML_Parser.
// This just casts the user data to a cmXMLParser and calls
// StartElement.
static_cast<cmXMLParser*>(parser)->StartElement(name, atts);
}
//----------------------------------------------------------------------------
void cmXMLParserEndElement(void* parser, const char *name)
{
// End element handler that is registered with the XML_Parser. This
// just casts the user data to a cmXMLParser and calls EndElement.
static_cast<cmXMLParser*>(parser)->EndElement(name);
}
//----------------------------------------------------------------------------
void cmXMLParserCharacterDataHandler(void* parser, const char* data,
int length)
{
// Character data handler that is registered with the XML_Parser.
// This just casts the user data to a cmXMLParser and calls
// CharacterDataHandler.
static_cast<cmXMLParser*>(parser)->CharacterDataHandler(data, length);
}
//----------------------------------------------------------------------------
void cmXMLParser::ReportXmlParseError()
{
XML_Parser parser = static_cast<XML_Parser>(this->Parser);
this->ReportError(XML_GetCurrentLineNumber(parser),
XML_GetCurrentColumnNumber(parser),
XML_ErrorString(XML_GetErrorCode(parser)));
}
//----------------------------------------------------------------------------
void cmXMLParser::ReportError(int line, int, const char* msg)
{
std::cerr << "Error parsing XML in stream at line "
<< line << ": " << msg << std::endl;
}
|
