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feat(string): add string trimming functions

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Redstone1024
2024-11-12 17:21:36 +08:00
parent bc93455d0e
commit 3859070d53
4 changed files with 356 additions and 54 deletions
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84
Redcraft.Utility/Source/Public/String/Conversion.h.inl
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@ -457,7 +457,7 @@ struct TStringHelper
if (IndexLength != 0)
{
if (!PlaceholderIndex.IsNumeric())
if (!PlaceholderIndex.IsInteger(10, false))
{
checkf(false, TEXT("Invalid placeholder index."));
@ -550,27 +550,23 @@ NAMESPACE_PRIVATE_END
template <CCharType T, CAllocator<T> Allocator>
template <typename ... Ts>
TString<T, Allocator> TString<T, Allocator>::Format(TStringView<ElementType> Fmt, const Ts&... Args)
void TString<T, Allocator>::AppendFormat(TStringView<ElementType> Fmt, const Ts&... Args)
{
// The Unreal Engine says that the starting buffer size catches 99.97% of printf calls.
constexpr size_t ReserveBufferSize = 512;
TString Result;
Result.Reserve(ReserveBufferSize);
TString<T, TInlineAllocator<ReserveBufferSize>> Result;
NAMESPACE_PRIVATE::TStringHelper<ElementType, true>::Do(Result, Fmt, ForwardAsTuple(Args...));
return Result;
Append(Result.Begin(), Result.End());
}
template <CCharType T>
template <typename ... Ts>
size_t TStringView<T>::Parse(TStringView Fmt, Ts&... Args) const
size_t TStringView<T>::ParseAndTrim(TStringView Fmt, Ts&... Args)
{
TStringView View = *this;
return NAMESPACE_PRIVATE::TStringHelper<ElementType, false>::Do(View, Fmt, ForwardAsTuple(Args...));
return NAMESPACE_PRIVATE::TStringHelper<ElementType, false>::Do(*this, Fmt, ForwardAsTuple(Args...));
}
#undef LEFT_BRACE
@ -580,43 +576,55 @@ size_t TStringView<T>::Parse(TStringView Fmt, Ts&... Args) const
#undef ESCAPE_RIGHT_BRACE
template <CCharType T>
constexpr bool TStringView<T>::ToBool() const
constexpr bool TStringView<T>::ToBoolAndTrim()
{
if (StartsWith(LITERAL(T, '1'))
|| StartsWith(LITERAL(T, "true"))
|| StartsWith(LITERAL(T, "True"))
|| StartsWith(LITERAL(T, "TRUE")))
if (this->IsEmpty()) return false;
if (this->Front() == LITERAL(T, '1'))
{
RemovePrefix(1);
return true;
}
if (StartsWith(LITERAL(T, '0'))
|| StartsWith(LITERAL(T, "false"))
|| StartsWith(LITERAL(T, "False"))
|| StartsWith(LITERAL(T, "FALSE")))
if (this->Front() == LITERAL(T, '0'))
{
RemovePrefix(1);
return false;
}
return ToInt() != 0;
if (StartsWith(LITERAL(T, "true"))
|| StartsWith(LITERAL(T, "True"))
|| StartsWith(LITERAL(T, "TRUE")))
{
RemovePrefix(4);
return true;
}
if (StartsWith(LITERAL(T, "false"))
|| StartsWith(LITERAL(T, "False"))
|| StartsWith(LITERAL(T, "FALSE")))
{
RemovePrefix(5);
return false;
}
return ToIntAndTrim() != 0;
}
template <CCharType T>
template <CIntegral U> requires (!CSameAs<U, bool> && !CConst<U> && !CVolatile<U>)
constexpr U TStringView<T>::ToInt(unsigned Base) const
constexpr U TStringView<T>::ToIntAndTrim(unsigned Base)
{
checkf(Base >= 2 && Base <= 36, TEXT("Illegal base. Please check the base."));
bool bNegative = false;
TStringView View = *this;
if constexpr (CSigned<U>)
{
if (View.StartsWith(LITERAL(ElementType, '-')))
if (StartsWith(LITERAL(ElementType, '-')))
{
bNegative = true;
View.RemovePrefix(1);
RemovePrefix(1);
}
}
@ -630,9 +638,13 @@ constexpr U TStringView<T>::ToInt(unsigned Base) const
UnsignedU LastValue = 0;
UnsignedU Value = 0;
for (ElementType Char : View)
bool bOverflow = false;
while (!this->IsEmpty())
{
auto Digit = TChar<ElementType>::ToDigit(Char);
auto Digit = TChar<ElementType>::ToDigit(this->Front());
RemovePrefix(1);
if (Digit >= Base) break;
@ -640,14 +652,16 @@ constexpr U TStringView<T>::ToInt(unsigned Base) const
Value = static_cast<UnsignedU>(LastValue * Base + Digit);
if (Value < LastValue)
if (Value < LastValue) bOverflow = true;
}
if (bOverflow)
{
if constexpr (CSigned<U>)
{
if constexpr (CSigned<U>)
{
return bNegative ? SignedMinimum : SignedMaximum;
}
else return UnsignedMaximum;
return bNegative ? SignedMinimum : SignedMaximum;
}
else return UnsignedMaximum;
}
if constexpr (CSigned<U>)
@ -663,7 +677,7 @@ constexpr U TStringView<T>::ToInt(unsigned Base) const
template <CCharType T>
template <CFloatingPoint U> requires (!CConst<U> && !CVolatile<U>)
constexpr U TStringView<T>::ToFloat(bool bFixed, bool bScientific) const
constexpr U TStringView<T>::ToFloatAndTrim(bool bFixed, bool bScientific)
{
NAMESPACE_STD::chars_format Format;
@ -768,6 +782,8 @@ constexpr U TStringView<T>::ToFloat(bool bFixed, bool bScientific) const
}
else ConvertResult = NAMESPACE_STD::from_chars(ToAddress(this->Begin()), ToAddress(this->End()), Result, Format);
RemovePrefix(Iter - this->Begin());
if (ConvertResult.ec == NAMESPACE_STD::errc::result_out_of_range)
{
if (!bNegativeMantissa && !bNegativeExponent) return NAMESPACE_STD::numeric_limits<U>::infinity();