本文整理汇总了C++中TIXML_STRING::clear方法的典型用法代码示例。如果您正苦于以下问题：C++ TIXML_STRING::clear方法的具体用法？C++ TIXML_STRING::clear怎么用？C++ TIXML_STRING::clear使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TIXML_STRING的用法示例。
在下文中一共展示了TIXML_STRING::clear方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: LoadFile
bool TiXmlDocument::LoadFile( const TCHAR* filename )
{
// Delete the existing data:
Clear();
location.Clear();
// There was a really terrifying little bug here. The code:
// value = filename
// in the STL case, cause the assignment method of the std::generic_string to
// be called. What is strange, is that the std::generic_string had the same
// address as it's c_str() method, and so bad things happen. Looks
// like a bug in the Microsoft STL implementation.
// See STL_STRING_BUG above.
// Fixed with the StringToBuffer class.
value = filename;
FILE* file = generic_fopen( value.c_str (), TEXT("r") );
if ( file )
{
// Get the file size, so we can pre-allocate the generic_string. HUGE speed impact.
long length = 0;
fseek( file, 0, SEEK_END );
length = ftell( file );
fseek( file, 0, SEEK_SET );
// Strange case, but good to handle up front.
if ( length == 0 )
{
fclose( file );
return false;
}
// If we have a file, assume it is all one big XML file, and read it in.
// The document parser may decide the document ends sooner than the entire file, however.
TIXML_STRING data;
data.reserve( length );
const int BUF_SIZE = 2048;
TCHAR buf[BUF_SIZE];
while( generic_fgets( buf, BUF_SIZE, file ) )
{
data += buf;
}
fclose( file );
//input is in UTF-8, so transformation is needed to UTF-16 used by windows for TCHAR in unicode mode
std::vector<char> inputdataInUTF8(data.size()+1); //+1 for the null termination
size_t datalength = wcstombs(inputdataInUTF8.data(), data.c_str(), data.size());
int transformedDataCharCount = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)inputdataInUTF8.data(), -1, nullptr, 0);
std::vector<wchar_t> transformedData(transformedDataCharCount+1); //+1 for the null termination
transformedDataCharCount = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)inputdataInUTF8.data(), -1, transformedData.data(), transformedDataCharCount);
if(transformedDataCharCount > 0)
{
//replace the original data with the new tranformed one, on success ot transformation otherwise go with old style data
data.clear();
data = transformedData.data();
}
Parse( data.c_str(), 0 );
if ( Error() )
return false;
else
return true;
}
SetError( TIXML_ERROR_OPENING_FILE, 0, 0 );
return false;
}