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Decompile fn_07589 (NFileLog::Initialize)

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Batch #857 by ragnarok-clanker: 0 byte-identical, 1 confirmed by peer review.

- fn_07589 NFileLog::Initialize: logic confirmed by peer review

Reviewed-by: ragnarok-clanker
Adds to the build: Source/Utility/NFileLog.cpp
This commit is contained in:
ragnarok-clanker 2026-10-26 22:53:19 +00:00
commit 94eb5ab852
3 changed files with 114 additions and 0 deletions
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82
Source/Utility/NFileLog.cpp Normal file
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#include "Utility/NFileLog.h"
#include "Utility/Text/FormatString.h"
#include <cstdio>
#include <cstring>
#include <ctime>
#include <io.h>
// FUNCTION: fn_07589
bool NFileLog::Initialize(const char* directoryName, const char* filePrefix) {
char currentDirectory[1024]{};
GetCurrentDirectoryA(sizeof(currentDirectory), currentDirectory);
StringFormat(this->directory, sizeof(this->directory), static_cast<std::size_t>(-1), "%s\\%s", currentDirectory, directoryName);
CreateDirectoryA(this->directory, nullptr);
SYSTEMTIME currentTime;
GetLocalTime(&currentTime);
StringFormat(this->prefix, sizeof(this->prefix), static_cast<std::size_t>(-1), "%s", filePrefix);
this->year = currentTime.wYear;
this->month = currentTime.wMonth;
this->day = currentTime.wDay;
__time32_t cutoffTime = _time32(nullptr) - 15552000;
const std::tm cutoff = *_localtime32(&cutoffTime);
char cutoffPrefix[260]{};
StringFormat(cutoffPrefix, sizeof(cutoffPrefix), static_cast<std::size_t>(-1), "%s(%04d%02d%2d)", this->prefix, cutoff.tm_year + 1900, cutoff.tm_mon, cutoff.tm_mday);
char filename[1024]{};
StringFormat(filename, sizeof(filename), static_cast<std::size_t>(-1), "%s\\%s*.*", this->directory, this->prefix);
WIN32_FIND_DATAA found{};
HANDLE search = FindFirstFileA(filename, &found);
if (search != INVALID_HANDLE_VALUE) {
do {
if (std::strncmp(found.cFileName, cutoffPrefix, std::strlen(cutoffPrefix)) < 0) {
char expired[260]{};
StringFormat(expired, sizeof(expired), static_cast<std::size_t>(-1), "%s\\%s", this->directory, found.cFileName);
_unlink(expired);
}
} while (FindNextFileA(search, &found));
FindClose(search);
}
int lastExisting = -1;
int nextIndex = 0;
for (;; ++nextIndex) {
char candidate[1024]{};
char base[1024]{};
StringFormat(base, sizeof(base), static_cast<std::size_t>(-1), "%s\\%s(%04d%02d%02d)", this->directory, this->prefix, this->year, this->month, this->day);
if (nextIndex != 0) {
StringFormat(candidate, sizeof(candidate), static_cast<std::size_t>(-1), "%s-%04d.txt", base, nextIndex);
} else {
StringFormat(candidate, sizeof(candidate), static_cast<std::size_t>(-1), "%s.txt", base);
}
if (_access(candidate, 0) != 0) {
break;
}
lastExisting = nextIndex;
}
bool reuse = false;
if (lastExisting >= 0) {
std::memset(filename, 0, sizeof(filename));
char base[1024]{};
StringFormat(base, sizeof(base), static_cast<std::size_t>(-1), "%s\\%s(%04d%02d%02d)", this->directory, this->prefix, this->year, this->month, this->day);
if (lastExisting != 0) {
StringFormat(filename, sizeof(filename), static_cast<std::size_t>(-1), "%s-%04d.txt", base, lastExisting);
} else {
StringFormat(filename, sizeof(filename), static_cast<std::size_t>(-1), "%s.txt", base);
}
FILE* file = nullptr;
if (fopen_s(&file, filename, "r") == 0 && file != nullptr) {
std::fseek(file, 0, SEEK_END);
this->fileSize = std::ftell(file);
std::fclose(file);
reuse = this->fileSize < 3145728;
}
}
if (!reuse) {
this->fileSize = 0;
lastExisting = nextIndex;
}
this->fileIndex = lastExisting;
return static_cast<unsigned>(lastExisting) <= 9999;
}