如下是一个XML文件：sample.xml <?xml version="1.0" encoding="utf-8"?> <常用XML解析库> <库1>Xerces-C</库1> <库2>libxml2</库2> <库3>expat</库3> <库4>tinyxml</库4> <库5>msxml</库5> </常用XML解析库>
#include <stdio.h>
#include <expat.h>
#include <Windows.h>
#ifdef XML_LARGE_SIZE
#if defined(XML_USE_MSC_EXTENSIONS) && _MSC_VER < 1400
#define XML_FMT_INT_MOD "I64"
#else
#define XML_FMT_INT_MOD "ll"
#endif
#else
#define XML_FMT_INT_MOD "l"
#endif
class CXMLNodeContent
{
private:
char* m_pNodeText;
int m_BufferSize;
int m_CurBufferSize;
public:
CXMLNodeContent()
{
m_pNodeText = NULL;
m_BufferSize = 0;
m_CurBufferSize = 0;
}
~CXMLNodeContent()
{
if( m_pNodeText != NULL )
{
delete []m_pNodeText;
m_pNodeText = NULL;
}
m_BufferSize = 0;
m_CurBufferSize = 0;
}
int printNodeContent( const wchar_t* pText )
{
getNodeContent( pText );
if( m_CurBufferSize == 1 )
return 0;
else
{
printf( "%s", m_pNodeText );
return 1;
}
}
int getBufferSize()
{
return m_CurBufferSize;
}
char* getNodeContent( const wchar_t* pText )
{
if( pText == NULL )
{
m_CurBufferSize = 0;
return NULL;
}
int index = 0;
m_CurBufferSize = WideCharToMultiByte(CP_ACP, 0 ,pText, -1 ,
0 , 0, NULL, NULL);
if( pText[0] == 10 )
{
while( pText[index] == 10 || pText[index] == 32 && index < m_CurBufferSize )
index++;
if( index == m_CurBufferSize )
{
m_CurBufferSize = 0;
return NULL;
}
}
if( m_CurBufferSize > m_BufferSize )
{
if( m_pNodeText == NULL )
{
m_pNodeText = new char[m_CurBufferSize];
m_BufferSize = m_CurBufferSize;
}
else
{
delete []m_pNodeText;
m_pNodeText = new char[m_CurBufferSize];
m_BufferSize = m_CurBufferSize;
}
}
WideCharToMultiByte(CP_ACP, 0 ,pText + index, -1 ,
m_pNodeText , m_CurBufferSize, NULL, NULL);
return m_pNodeText;
}
};
static void XMLCALL
startElement(void *userData, const char *name, const char **atts)
{
int i;
int *depthPtr = (int *)userData;
for (i = 0; i < *depthPtr; i++)
putchar('\t');
CXMLNodeContent nodeContent;
int buf_length = MultiByteToWideChar( CP_UTF8, 0, name, -1, NULL, 0 );
wchar_t* buffer = new wchar_t[buf_length];
MultiByteToWideChar( CP_UTF8, 0, name, -1, buffer, buf_length );
nodeContent.printNodeContent( buffer );
putchar('\n');
delete []buffer;
*depthPtr += 1;
}
static void XMLCALL
endElement(void *userData, const char *name)
{
int *depthPtr = (int *)userData;
*depthPtr -= 1;
}
int
main(int argc, char *argv[])
{
char buf[BUFSIZ];
XML_Parser parser = XML_ParserCreate(NULL);
FILE* p = fopen( "sample.xml", "rb" );
int done;
int depth = 0;
XML_SetUserData(parser, &depth);
XML_SetElementHandler(parser, startElement, endElement);
do {
int len = (int)fread(buf, 1, sizeof(buf), p);
done = len < sizeof(buf);
if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {
fprintf(stderr,
"%s at line %" XML_FMT_INT_MOD "u\n",
XML_ErrorString(XML_GetErrorCode(parser)),
XML_GetCurrentLineNumber(parser));
return 1;
}
} while (!done);
fclose( p );
XML_ParserFree(parser);
return 0;
}
