Redstone1024/Redcraft
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

feat(string): add string trimming functions

Browse Source
This commit is contained in:
Redstone1024
2024-11-12 17:21:36 +08:00
parent bc93455d0e
commit 3859070d53
4 changed files with 356 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

138
Redcraft.Utility/Source/Public/String/StringView.h
View File

@ -113,22 +113,80 @@ public:
NODISCARD friend constexpr auto operator<=>(TStringView LHS, ElementType RHS) { return LHS <=> TStringView(&RHS, 1); }
NODISCARD friend constexpr auto operator<=>(ElementType LHS, TStringView RHS) { return TStringView(&LHS, 1) <=> RHS; }
public:
/** Shrinks the view by moving its start forward. */
FORCEINLINE constexpr void RemovePrefix(size_t Count)
FORCEINLINE constexpr TStringView RemovePrefix(size_t Count)
{
checkf(Count <= this->Num(), TEXT("Illegal subview range. Please check Count."));
*this = Substr(Count);
return *this;
}
/** Shrinks the view by moving its end backward. */
FORCEINLINE constexpr void RemoveSuffix(size_t Count)
FORCEINLINE constexpr TStringView RemoveSuffix(size_t Count)
{
checkf(Count <= this->Num(), TEXT("Illegal subview range. Please check Count."));
*this = Substr(0, this->Num() - Count);
return *this;
}
/** Removes whitespace characters from the start of this string. */
FORCEINLINE constexpr TStringView TrimStart()
{
auto Index = Find([](ElementType Char) { return !TChar<ElementType>::IsSpace(Char); });
if (Index != INDEX_NONE)
{
RemovePrefix(Index);
}
else *this = TStringView();
return *this;
}
/** Removes whitespace characters from the end of this string. */
FORCEINLINE constexpr TStringView TrimEnd()
{
auto Index = RFind([](ElementType Char) { return !TChar<ElementType>::IsSpace(Char); });
if (Index != INDEX_NONE)
{
RemoveSuffix(this->Num() - Index - 1);
}
else *this = TStringView();
return *this;
}
/** Removes whitespace characters from the start and end of this string. */
FORCEINLINE constexpr TStringView TrimStartAndEnd()
{
TrimStart();
TrimEnd();
return *this;
}
/** Removes characters after the first null-terminator. */
FORCEINLINE constexpr TStringView TrimToNullTerminator()
{
auto Index = Find(LITERAL(ElementType, '\0'));
if (Index != INDEX_NONE)
{
*this = Substr(0, Index);
}
return *this;
}
public:
/** Copies the elements of this string view to the destination buffer without null-termination. */
FORCEINLINE constexpr size_t Copy(ElementType* Dest, size_t Count = DynamicExtent, size_t Offset = 0) const
{
@ -401,15 +459,46 @@ public:
return true;
}
/** @return true if the string only contains numeric characters, false otherwise. */
NODISCARD constexpr bool IsNumeric(unsigned Base = 10) const
/** @return true if the string can be fully represented as a boolean value, false otherwise. */
NODISCARD FORCEINLINE constexpr bool IsBoolean() const
{
for (ElementType Char : *this)
TStringView View = *this;
Ignore = View.ToBoolAndTrim();
return View.IsEmpty();
}
/** @return true if the string can be fully represented as an integer value, false otherwise. */
NODISCARD FORCEINLINE constexpr bool IsInteger(unsigned Base = 10, bool bSigned = true) const
{
TStringView View = *this;
if (View.StartsWith(LITERAL(ElementType, '-')))
{
if (!TChar<ElementType>::IsDigit(Char, Base)) return false;
if (bSigned) View.RemovePrefix(1);
else return false;
}
return true;
Ignore = View.ToIntAndTrim(Base);
return View.IsEmpty();
}
/** @return true if the string can be fully represented as a floating-point value, false otherwise. */
NODISCARD FORCEINLINE constexpr bool IsFloatingPoint(bool bFixed = true, bool bScientific = true, bool bSigned = true) const
{
TStringView View = *this;
if (View.StartsWith(LITERAL(ElementType, '-')))
{
if (bSigned) View.RemovePrefix(1);
else return false;
}
Ignore = View.ToFloatAndTrim(bFixed, bScientific);
return View.IsEmpty();
}
public:
@ -422,7 +511,10 @@ public:
*
* @return The boolean value.
*/
NODISCARD constexpr bool ToBool() const;
NODISCARD constexpr bool ToBool() const
{
return TStringView(*this).ToBoolAndTrim();
}
/**
* Converts a string into an integer value.
@ -438,7 +530,10 @@ public:
* @return The integer value.
*/
template <CIntegral U = int> requires (!CSameAs<U, bool> && !CConst<U> && !CVolatile<U>)
NODISCARD constexpr U ToInt(unsigned Base = 10) const;
NODISCARD constexpr U ToInt(unsigned Base = 10) const
{
return TStringView(*this).ToIntAndTrim<U>(Base);
}
/**
* Converts a string into a floating-point value.
@ -456,7 +551,21 @@ public:
* @return The floating-point value.
*/
template <CFloatingPoint U = float> requires (!CConst<U> && !CVolatile<U>)
NODISCARD constexpr U ToFloat(bool bFixed = true, bool bScientific = true) const;
NODISCARD constexpr U ToFloat(bool bFixed = true, bool bScientific = true) const
{
return TStringView(*this).ToFloatAndTrim<U>(bFixed, bScientific);
}
/** Converts a string into a boolean value and remove the parsed substring. */
NODISCARD constexpr bool ToBoolAndTrim();
/** Converts a string into an integer value and remove the parsed substring. */
template <CIntegral U = int> requires (!CSameAs<U, bool> && !CConst<U> && !CVolatile<U>)
NODISCARD constexpr U ToIntAndTrim(unsigned Base = 10);
/** Converts a string into a floating-point value and remove the parsed substring. */
template <CFloatingPoint U = float> requires (!CConst<U> && !CVolatile<U>)
NODISCARD constexpr U ToFloatAndTrim(bool bFixed = true, bool bScientific = true);
public:
@ -469,7 +578,14 @@ public:
* @return The number of objects successfully parsed.
*/
template <typename... Ts>
size_t Parse(TStringView Fmt, Ts&... Args) const;
size_t Parse(TStringView Fmt, Ts&... Args) const
{
return TStringView(*this).ParseAndTrim(Fmt, Args...);
}
/** Parse a string using a format string to objects and remove the parsed substring. */
template <typename... Ts>
size_t ParseAndTrim(TStringView Fmt, Ts&... Args);
public: