本文整理汇总了C++中HeapString::ReserveSize方法的典型用法代码示例。如果您正苦于以下问题：C++ HeapString::ReserveSize方法的具体用法？C++ HeapString::ReserveSize怎么用？C++ HeapString::ReserveSize使用的例子？那么, 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HeapString的用法示例。
在下文中一共展示了HeapString::ReserveSize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: ConvertToBuffer
intp StringParser::ConvertToBuffer(const wchar_t* str, size_t length, HeapString& outBuffer)
{
outBuffer.Clear();
if (length == 0)
{
return 0;
}
constexpr bool isUTF16 = sizeof(wchar_t) == 2;
if (isUTF16)
{
//sizeof(wchar_t)==2
size_t utf8Size = length * 3 + 1;
outBuffer.ReserveSize(utf8Size);
const UTF16* sourceStart = reinterpret_cast<const UTF16*>(str);
const UTF16* sourceEnd = sourceStart + length;
UTF8* targetStart = reinterpret_cast<UTF8*>(outBuffer.MutableBuffer());
UTF8* targetEnd = targetStart + utf8Size;
ConversionResult res = ConvertUTF16toUTF8(&sourceStart, sourceEnd, &targetStart, targetEnd, strictConversion);
*targetStart = 0;
if (res == conversionOK)
{
intp count = targetStart - reinterpret_cast<UTF8*>(outBuffer.MutableBuffer());
outBuffer.ForceSetLength(count);
return count;
}
}
else
{
//sizeof(wchar_t)==4
size_t utf8Size = length * 4 + 1;
outBuffer.ReserveSize(utf8Size);
const UTF32* sourceStart = reinterpret_cast<const UTF32*>(str);
const UTF32* sourceEnd = sourceStart + length;
UTF8* targetStart = reinterpret_cast<UTF8*>(outBuffer.MutableBuffer());
UTF8* targetEnd = targetStart + utf8Size;
ConversionResult res = ConvertUTF32toUTF8(&sourceStart, sourceEnd, &targetStart, targetEnd, strictConversion);
*targetStart = 0;
if (res == conversionOK)
{
intp count = targetStart - reinterpret_cast<UTF8*>(outBuffer.MutableBuffer());
outBuffer.ForceSetLength(count);
return count;
}
}
return 0;
}