MLIB

What?

MLIB stands for Misha's Library. Here I collect all very useful and reusable code I wrote and I like.

Logger

Features

• Error handling as value
• Logging system
• Wrapper of C FILE*

Error handling & logging system

#include "Logger.hpp"

using namespace mlib;
using namespace err;

ErrorCode divideAndPrint(int a, int b)
{
    if (b == 0)
    {
        GlobalLogError(ERROR_ZERO_DIVISION, "Don't divide by zero!!!");
        return ERROR_ZERO_DIVISION;
    }

    int c = a / b;
    fmt::print("{} / {} = {}\n", a, b, c);

    return EVERYTHING_FINE;
}

int main()
{
    divideAndPrint(56, 8);
    divideAndPrint(42, 0);

    GlobalLogInfo("Funny message");

    Logger logger{"log.txt"};

    logger.LogInfo("Here is a log file");

    SetGlobalLoggerLogFile("globalLog.txt");

    GlobalLogInfo("This message will be in globalLog.txt!");

    return 0;
}

Output:

56 / 8 = 7
[ERROR] ERROR_ZERO_DIVISION:6 /home/twenty/Programming/mlib/examples/Errors.cpp:12 in ErrorCode divideAndPrint(int, int) Don't divide by zero!!!

[INFO] /home/twenty/Programming/mlib/examples/Errors.cpp:27 in int main()
Funny message

cat log.txt
[INFO] /home/twenty/Programming/mlib/examples/Errors.cpp:31 in int main()
Here is a log file

cat globalLog.txt
[INFO] /home/twenty/Programming/mlib/examples/Errors.cpp:35 in int main()
This message will be in globalLog.txt!

Utils

Features

• Short int types
• Split string
• Read from file
• Comparing doubles
• Performance measuring using TickTimer or Timer

Reading from file

#include "Result.hpp"
#include "Utils.hpp"
#include "Logger.hpp"

using namespace mlib;
using namespace err;
using namespace std;

int main()
{
    const char* file = "../../file.txt";

    Result<string> text = ReadFileToBuf(file);

    if (!text)
    {
        GlobalLogError(text.Error());
        return text.Error();
    }

    Result<vector<string_view>> words = SplitString(*text);

    if (!words)
    {
        GlobalLogError(words.Error());
        return words.Error();
    }

    if (words->size() != 923)
        GlobalLogError(ERROR_BAD_VALUE, "Wrong number of words!!!: %zu\n", words->size());

    for (auto it = words->rbegin(), end = words->rend(); it != end; ++it)
        std::cout << *it << '\n';

    return 0;
}