94eb5ab852
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
82 lines
3.2 KiB
C++
82 lines
3.2 KiB
C++
#include "Utility/NFileLog.h"
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#include "Utility/Text/FormatString.h"
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#include <cstdio>
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#include <cstring>
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#include <ctime>
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#include <io.h>
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// FUNCTION: fn_07589
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bool NFileLog::Initialize(const char* directoryName, const char* filePrefix) {
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char currentDirectory[1024]{};
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GetCurrentDirectoryA(sizeof(currentDirectory), currentDirectory);
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StringFormat(this->directory, sizeof(this->directory), static_cast<std::size_t>(-1), "%s\\%s", currentDirectory, directoryName);
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CreateDirectoryA(this->directory, nullptr);
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SYSTEMTIME currentTime;
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GetLocalTime(¤tTime);
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StringFormat(this->prefix, sizeof(this->prefix), static_cast<std::size_t>(-1), "%s", filePrefix);
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this->year = currentTime.wYear;
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this->month = currentTime.wMonth;
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this->day = currentTime.wDay;
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__time32_t cutoffTime = _time32(nullptr) - 15552000;
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const std::tm cutoff = *_localtime32(&cutoffTime);
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char cutoffPrefix[260]{};
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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);
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char filename[1024]{};
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StringFormat(filename, sizeof(filename), static_cast<std::size_t>(-1), "%s\\%s*.*", this->directory, this->prefix);
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WIN32_FIND_DATAA found{};
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HANDLE search = FindFirstFileA(filename, &found);
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if (search != INVALID_HANDLE_VALUE) {
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do {
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if (std::strncmp(found.cFileName, cutoffPrefix, std::strlen(cutoffPrefix)) < 0) {
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char expired[260]{};
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StringFormat(expired, sizeof(expired), static_cast<std::size_t>(-1), "%s\\%s", this->directory, found.cFileName);
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_unlink(expired);
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}
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} while (FindNextFileA(search, &found));
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FindClose(search);
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}
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int lastExisting = -1;
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int nextIndex = 0;
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for (;; ++nextIndex) {
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char candidate[1024]{};
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char base[1024]{};
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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);
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if (nextIndex != 0) {
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StringFormat(candidate, sizeof(candidate), static_cast<std::size_t>(-1), "%s-%04d.txt", base, nextIndex);
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} else {
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StringFormat(candidate, sizeof(candidate), static_cast<std::size_t>(-1), "%s.txt", base);
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}
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if (_access(candidate, 0) != 0) {
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break;
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}
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lastExisting = nextIndex;
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}
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bool reuse = false;
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if (lastExisting >= 0) {
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std::memset(filename, 0, sizeof(filename));
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char base[1024]{};
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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);
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if (lastExisting != 0) {
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StringFormat(filename, sizeof(filename), static_cast<std::size_t>(-1), "%s-%04d.txt", base, lastExisting);
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} else {
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StringFormat(filename, sizeof(filename), static_cast<std::size_t>(-1), "%s.txt", base);
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}
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FILE* file = nullptr;
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if (fopen_s(&file, filename, "r") == 0 && file != nullptr) {
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std::fseek(file, 0, SEEK_END);
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this->fileSize = std::ftell(file);
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std::fclose(file);
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reuse = this->fileSize < 3145728;
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}
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}
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if (!reuse) {
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this->fileSize = 0;
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lastExisting = nextIndex;
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}
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this->fileIndex = lastExisting;
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return static_cast<unsigned>(lastExisting) <= 9999;
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}
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