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Refactor StringUtils

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This commit is contained in:
Wojtek Figat
2023-05-28 21:16:29 +02:00
parent 6b4340ce24
commit f2ecefb7ee
2 changed files with 21 additions and 208 deletions
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127
Source/Engine/Platform/Base/StringUtilsBase.cpp
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@@ -11,9 +11,9 @@
#include <string>
#endif
const char DirectorySeparatorChar = '\\';
const char AltDirectorySeparatorChar = '/';
const char VolumeSeparatorChar = ':';
constexpr char DirectorySeparatorChar = '\\';
constexpr char AltDirectorySeparatorChar = '/';
constexpr char VolumeSeparatorChar = ':';
const Char* StringUtils::FindIgnoreCase(const Char* str, const Char* toFind)
{
@@ -378,20 +378,17 @@ void StringUtils::PathRemoveRelativeParts(String& path)
path.Insert(0, TEXT("/"));
}
const char DigitPairs[201] = {
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"
"80818283848586878889"
"90919293949596979899"
};
#define STRING_UTILS_ITOSTR_BUFFER_SIZE 15
int32 StringUtils::HexDigit(Char c)
{
int32 result = 0;
if (c >= '0' && c <= '9')
result = c - '0';
else if (c >= 'a' && c <= 'f')
result = c + 10 - 'a';
else if (c >= 'A' && c <= 'F')
result = c + 10 - 'A';
return result;
}
bool StringUtils::Parse(const Char* str, float* result)
{
@@ -419,108 +416,22 @@ bool StringUtils::Parse(const char* str, float* result)
String StringUtils::ToString(int32 value)
{
char buf[STRING_UTILS_ITOSTR_BUFFER_SIZE];
char* it = &buf[STRING_UTILS_ITOSTR_BUFFER_SIZE - 2];
int32 div = value / 100;
if (value >= 0)
{
while (div)
{
Platform::MemoryCopy(it, &DigitPairs[2 * (value - div * 100)], 2);
value = div;
it -= 2;
div = value / 100;
}
Platform::MemoryCopy(it, &DigitPairs[2 * value], 2);
if (value < 10)
it++;
}
else
{
while (div)
{
Platform::MemoryCopy(it, &DigitPairs[-2 * (value - div * 100)], 2);
value = div;
it -= 2;
div = value / 100;
}
Platform::MemoryCopy(it, &DigitPairs[-2 * value], 2);
if (value <= -10)
it--;
*it = '-';
}
return String(it, (int32)(&buf[STRING_UTILS_ITOSTR_BUFFER_SIZE] - it));
return String::Format(TEXT("{}"), value);
}
String StringUtils::ToString(int64 value)
{
char buf[STRING_UTILS_ITOSTR_BUFFER_SIZE];
char* it = &buf[STRING_UTILS_ITOSTR_BUFFER_SIZE - 2];
int64 div = value / 100;
if (value >= 0)
{
while (div)
{
Platform::MemoryCopy(it, &DigitPairs[2 * (value - div * 100)], 2);
value = div;
it -= 2;
div = value / 100;
}
Platform::MemoryCopy(it, &DigitPairs[2 * value], 2);
if (value < 10)
it++;
}
else
{
while (div)
{
Platform::MemoryCopy(it, &DigitPairs[-2 * (value - div * 100)], 2);
value = div;
it -= 2;
div = value / 100;
}
Platform::MemoryCopy(it, &DigitPairs[-2 * value], 2);
if (value <= -10)
it--;
*it = '-';
}
return String(it, (int32)(&buf[STRING_UTILS_ITOSTR_BUFFER_SIZE] - it));
return String::Format(TEXT("{}"), value);
}
String StringUtils::ToString(uint32 value)
{
char buf[STRING_UTILS_ITOSTR_BUFFER_SIZE];
char* it = &buf[STRING_UTILS_ITOSTR_BUFFER_SIZE - 2];
int32 div = value / 100;
while (div)
{
Platform::MemoryCopy(it, &DigitPairs[2 * (value - div * 100)], 2);
value = div;
it -= 2;
div = value / 100;
}
Platform::MemoryCopy(it, &DigitPairs[2 * value], 2);
if (value < 10)
it++;
return String((char*)it, (int32)((char*)&buf[STRING_UTILS_ITOSTR_BUFFER_SIZE] - (char*)it));
return String::Format(TEXT("{}"), value);
}
String StringUtils::ToString(uint64 value)
{
char buf[STRING_UTILS_ITOSTR_BUFFER_SIZE];
char* it = &buf[STRING_UTILS_ITOSTR_BUFFER_SIZE - 2];
int64 div = value / 100;
while (div)
{
Platform::MemoryCopy(it, &DigitPairs[2 * (value - div * 100)], 2);
value = div;
it -= 2;
div = value / 100;
}
Platform::MemoryCopy(it, &DigitPairs[2 * value], 2);
if (value < 10)
it++;
return String((char*)it, (int32)((char*)&buf[STRING_UTILS_ITOSTR_BUFFER_SIZE] - (char*)it));
return String::Format(TEXT("{}"), value);
}
String StringUtils::ToString(float value)
@@ -544,5 +455,3 @@ String StringUtils::GetZZString(const Char* str)
}
return String(str, (int32)(end - str));
}
#undef STRING_UTILS_ITOSTR_BUFFER_SIZE