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refactor(strings): refactor format string rules to make it more flexible

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Redstone1024 2025-01-04 21:51:35 +08:00
parent 9dd5e74788
commit e498b39d3d
1 changed files with 36 additions and 10 deletions
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46
Redcraft.Utility/Source/Public/Strings/Formatting.h
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@ -414,7 +414,7 @@ NAMESPACE_END(Algorithms)
*
* The syntax of format specifications is:
*
* [Fill And Align] [Width] [Precision] [Type]
* [Fill And Align] [Width] [Precision] [Type] [!] [?]
*
* 1. The fill and align part:
*
@ -427,6 +427,7 @@ NAMESPACE_END(Algorithms)
*
* - '<': Align the formatted argument to the left of the available space
* by inserting n fill characters after the formatted argument.
* This is default option.
* - '^': Align the formatted argument to the center of the available space
* by inserting n fill characters around the formatted argument.
* If cannot absolute centering, offset to the left.
@ -438,7 +439,7 @@ NAMESPACE_END(Algorithms)
* - 'N': The number is used to specify the minimum field width of the object.
* N should be an unsigned non-zero decimal number.
* - '{N}': Dynamically determine the minimum field width of the object.
* N should be a valid index of the format integer argument.
* N should be a valid index of the format integral argument.
* N is optional, and the default value is automatic indexing.
*
* 3. The precision part:
@ -446,16 +447,23 @@ NAMESPACE_END(Algorithms)
* - '.N': The number is used to specify the maximum field width of the object.
* N should be an unsigned non-zero decimal number.
* - '.{N}': Dynamically determine the maximum field width of the object.
* N should be a valid index of the format integer argument.
* N should be a valid index of the format integral argument.
* N is optional, and the default value is automatic indexing.
*
* 4. The type indicators part:
* 4. The type indicator part:
*
* - none: Indicates the as-is formatting.
* - 'S': Indicates the as-is formatting.
* - '!': Indicates uppercase formatting.
* - 's': Indicates lowercase formatting.
* - '?': Indicates escape formatting.
*
* 5. The case indicators part:
*
* - '!': Indicates capitalize the entire string.
*
* 6. The escape indicators part:
*
* - '?': Indicates the escape formatting.
*
*/
template <CCharType T>
class TFormatter<T*, T>
@ -743,9 +751,27 @@ public:
// Try to parse the type indicators part.
if (Char == LITERAL(FCharType, 'S')) { if (Iter == Sent || *Iter == LITERAL(FCharType, '}')) return Iter; Char = *Iter; ++Iter; }
else if (Char == LITERAL(FCharType, '!')) { bUppercase = true; if (Iter == Sent || *Iter == LITERAL(FCharType, '}')) return Iter; Char = *Iter; ++Iter; }
else if (Char == LITERAL(FCharType, 's')) { bLowercase = true; if (Iter == Sent || *Iter == LITERAL(FCharType, '}')) return Iter; Char = *Iter; ++Iter; }
else if (Char == LITERAL(FCharType, '?')) { bEscape = true; if (Iter == Sent || *Iter == LITERAL(FCharType, '}')) return Iter; Char = *Iter; ++Iter; }
// Try to parse the case indicators part.
if (Char == LITERAL(FCharType, '!'))
{
bUppercase = true;
if (Iter == Sent || *Iter == LITERAL(FCharType, '}')) return Iter;
Char = *Iter; ++Iter;
}
// Try to parse the escape indicators part.
if (Char == LITERAL(FCharType, '?'))
{
bEscape = true;
if (Iter == Sent || *Iter == LITERAL(FCharType, '}')) return Iter;
Char = *Iter; ++Iter;
}
checkf(false, TEXT("Illegal format string. Missing '}' in format string."));
@ -878,8 +904,8 @@ public:
if (Iter == Sent) UNLIKELY return Iter;
// Convert the character case.
if (bLowercase) Char = FCharTraits::ToLower(Char);
else if (bUppercase) Char = FCharTraits::ToUpper(Char);
if (bLowercase) Char = FCharTraits::ToLower(Char);
if (bUppercase) Char = FCharTraits::ToUpper(Char);
if (bEscape)
{