rodecomp/Source/Utility/Text/FormatString.cpp
ragnarok-clanker f496c11050 Decompile fn_17182 (IntToSignedString)
Batch #7100 by eAthena: 0 byte-identical, 1 confirmed by peer review.

- fn_17182 IntToSignedString: logic confirmed by peer review

Peer-reviewed-by: Lumen, Snow, Landruca
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
2026-10-31 04:09:36 +00:00

137 lines
3.2 KiB
C++

#include "Utility/Text/FormatString.h"
#include "Utility/Threading/NSyncObject.h"
#include <array>
#include <cstdarg>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <map>
#include <windows.h>
// GLOBAL: gl_24365
static char s_numberBuffer[1024];
// OFFSET: 0x005BAEF0
// FUNCTION: fn_03451
int StringFormat(char* buffer, std::size_t sizeInBytes, std::size_t count, const char* format, ...) {
va_list args;
va_start(args, format);
const int result = __stdio_common_vsnprintf_s(_CRT_INTERNAL_LOCAL_PRINTF_OPTIONS, buffer, sizeInBytes, count, format, nullptr, args);
va_end(args);
if (result < 0) {
return -1;
}
return result;
}
namespace {
class ThreadSafeBuffer {
public:
// OFFSET: 0x00733F00
// FUNCTION: fn_07592
ThreadSafeBuffer() {
InitializeCriticalSection(&this->m_criticalSection);
}
// INLINED
virtual ~ThreadSafeBuffer() {
DeleteCriticalSection(&this->m_criticalSection);
}
char* GetBuffer();
private:
/* 0004 */ CRITICAL_SECTION m_criticalSection;
/* 001C */ std::map<HANDLE, std::array<char, 2048>> m_buffers;
};
// OFFSET: 0x00734390
// FUNCTION: fn_07595
char* ThreadSafeBuffer::GetBuffer() {
NSyncObject lock(&this->m_criticalSection);
HANDLE thread = GetCurrentThread();
auto it = this->m_buffers.find(thread);
if (it == this->m_buffers.end()) {
it = this->m_buffers.emplace(thread, std::array<char, 2048>{}).first;
}
return it->second.data();
}
}
// OFFSET: 0x00734470
// FUNCTION: fn_07596
const char* FormatString(const char* format, ...) {
static ThreadSafeBuffer s_buffer;
char* buffer = s_buffer.GetBuffer();
va_list args;
va_start(args, format);
std::vsnprintf(buffer, 2048, format, args);
va_end(args);
return s_buffer.GetBuffer();
}
// FUNCTION: fn_18252
std::string FormatOwnedString(const char* format, ...) {
char buffer[4096];
va_list arguments;
va_start(arguments, format);
_vsnprintf_s(buffer, sizeof(buffer), static_cast<std::size_t>(-1), format, arguments);
va_end(arguments);
return std::string(buffer, std::strlen(buffer));
}
// OFFSET: 0x00A95590
// FUNCTION: fn_17181
std::string IntToString(int value, unsigned int digits) {
if (digits == 0) {
_itoa(value, s_numberBuffer, 10);
return std::string(s_numberBuffer);
}
std::sprintf(s_numberBuffer, "%.10d", value);
std::string text(s_numberBuffer);
if (text.size() > digits) {
text.erase(0, text.size() - digits);
}
return text;
}
// OFFSET: 0x00A95790
// FUNCTION: fn_17182
std::string IntToSignedString(int value, bool grouped, bool showPlus) {
if (!grouped) {
return IntToString(value, 0);
}
const unsigned int bits = static_cast<unsigned int>(value);
const unsigned int magnitude = value < 0 ? 0u - bits : bits;
std::string digits = IntToString(static_cast<int>(magnitude), 0);
std::string text;
const bool negative = value < 0;
for (std::size_t i = 0; i < digits.size(); ++i) {
if ((digits.size() - i) % 3 == 0) {
text += std::string(",");
}
text += digits.at(i);
}
if (text.at(0) == ',') {
text.erase(0, 1);
}
if (negative) {
text.insert(text.begin(), '-');
} else if (showPlus && value != 0) {
text.insert(text.begin(), '+');
}
return text;
}