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====================

Pytanie użytkownika 1 z 9 - 3.11.2025, 10:55:28:
C++, Cmake with test preset defined in CMakePresets.json, example of usage

GPT-4o mini:
To use **CMake** with a **CMakePresets.json** file for defining test presets in a **C++** project, follow these steps. Below is a comprehensive example illustrating how to set this up.

## CMakePresets.json Setup

Here's an example of a `CMakePresets.json` file defining a test preset:

```json
{
  "version": 3,
  "cmakeMinimumRequired": {
    "major": 3,
    "minor": 19,
    "patch": 0
  },
  "configurePresets": [
    {
      "name": "debug",
      "hidden": false,
      "generator": "Ninja",
      "buildType": "Debug"
    }
  ],
  "buildPresets": [
    {
      "name": "debug-build",
      "hidden": false,
      "configurePreset": "debug",
      "jobs": 4
    }
  ],
  "testPresets": [
    {
      "name": "run-tests",
      "hidden": false,
      "buildPreset": "debug-build",
      "args": ["--output-on-failure"]
    }
  ]
}
```

### Breakdown of `CMakePresets.json`

- **version**: Specifies the version of CMake presets.
- **cmakeMinimumRequired**: Defines the minimum CMake version needed for this preset file.
- **configurePresets**: Contains configurations for building the project. In this case, the "debug" preset specifies a debug build using the Ninja generator.
- **buildPresets**: Defines a build preset that uses the "debug" configuration preset.
- **testPresets**: Specifies a test preset named "run-tests" that uses the "debug-build". It includes argument options for the test command.

## CMakeLists.txt Example

Here’s a basic `CMakeLists.txt` file for using the defined presets:

```cmake
cmake_minimum_required(VERSION 3.19)
project(MyProject)

# Add executable
add_executable(my_executable main.cpp)

# Add testing support
include(CTest)
enable_testing()

# Define a sample test
add_test(NAME MyTest COMMAND my_executable)
```

### Example `main.cpp`

Here's a simple `main.cpp` file to accompany the project:

```cpp
#include <iostream>

int main() {
    std::cout << "Hello, World!" << std::endl;
    return 0;
}
```

## Using the Presets

To configure and build your project using the defined presets, follow these commands in your terminal:

### Step 1: Configure the Project

```bash
cmake --preset debug
```

### Step 2: Build the Project

```bash
cmake --build --preset debug-build
```

### Step 3: Run Tests

Finally, to run the tests using the test preset:

```bash
cmake --test --preset run-tests
```

This command will execute the tests defined in your project with the specified arguments.

---

By following these instructions, you should be able to set up and utilize CMake with test presets defined in `CMakePresets.json` effectively for your C++ project. If you have any questions or need further details, feel free to ask!

--------------------

Pytanie użytkownika 2 z 9 - 3.11.2025, 11:52:48:
gitlab, do not checkout repo in some job

GPT-4o mini:
To configure a **GitLab CI/CD** pipeline to skip checking out the repository in a specific job, you can use the `GIT_STRATEGY` variable. Setting the `GIT_STRATEGY` to `none` will prevent the job from checking out the repo.

Here's how to set it up in your `.gitlab-ci.yml` file:

## Example .gitlab-ci.yml

```yaml
stages:
  - build
  - test

build_job:
  stage: build
  script:
    - echo "Building the project..."
    # Add your build commands here

test_job:
  stage: test
  script:
    - echo "Running tests..."
    # Add your test commands here

skip_checkout_job:
  stage: test
  variables:
    GIT_STRATEGY: none
  script:
    - echo "This job does not check out the repo."
```

### Breakdown of the Configuration

- **stages**: Defines the stages for the pipeline, in this case, `build` and `test`.
- **build_job**: This job will run normally, checking out the repository.
- **test_job**: This job will also check out the repository as usual.
- **skip_checkout_job**:
  - Uses `GIT_STRATEGY: none` to skip the checkout process.
  - The script can include commands that don't require the repository files.

### Executing the Pipeline

When this pipeline runs, it will execute the `build_job` and `test_job` with the repository checked out. However, the `skip_checkout_job` will run without checking out any Git repository data.

This setup is useful for jobs that may only require environment setup, artifact uploads, or external script execution that doesn't depend on the repository contents. If you have any further questions or need additional examples, feel free to ask!

--------------------

Pytanie użytkownika 3 z 9 - 3.11.2025, 11:53:04:
recursively checkout submodules

GPT-4o mini:
To recursively check out submodules in a Git repository during your GitLab CI/CD pipeline, you can specify the `GIT_STRATEGY` and use the `git submodule update` command.

Here's an example of how to set this up in your `.gitlab-ci.yml` file:

## Example .gitlab-ci.yml

```yaml
stages:
  - setup
  - build

setup_job:
  stage: setup
  script:
    - echo "Checking out submodules..."
    - git submodule update --init --recursive

build_job:
  stage: build
  script:
    - echo "Building the project..."
    # Add your build commands here
```

### Breakdown of the Configuration

- **stages**: Defines the order of execution for the pipeline, in this example, `setup` followed by `build`.
- **setup_job**:
  - Executes the `git submodule update --init --recursive` command to initialize and update all submodules recursively.
- **build_job**: 
  - Runs after the setup stage and includes your build commands.

## Using Git Submodules

### Initializing Submodules

If you're adding new submodules to your repository, initialize them using:

```bash
git submodule init
git submodule update --recursive
```

### Adding Submodules

To add a new submodule, use the following command:

```bash
git submodule add <repository-url> <path>
```

### Cloning a Repository with Submodules

To clone a repository and initialize all submodules in one command, use:

```bash
git clone --recursive <repository-url>
```

## Alternative Method: Using GIT_SUBMODULE_STRATEGY

You can also set `GIT_SUBMODULE_STRATEGY` to `recursive` in your pipeline if you want GitLab to handle submodules automatically.

### Example with GIT_SUBMODULE_STRATEGY

```yaml
image: "your-image"

stages:
  - build

build_job:
  stage: build
  variables:
    GIT_SUBMODULE_STRATEGY: recursive
  script:
    - echo "Building the project with submodules..."
    # Add your build commands here
```

### Summary

Using the `GIT_SUBMODULE_STRATEGY: recursive` approach is often simpler, as it allows GitLab to manage submodules without manual commands. Choose the method that best fits your project structure and needs. If you have any further questions or need more examples, feel free to ask!

--------------------

Pytanie użytkownika 4 z 9 - 3.11.2025, 13:10:49:
c++, unzip directory

GPT-4o mini:
To unzip a directory in **C++**, you can utilize a library like **miniz** or **libzip**. However, if you're looking for a straightforward way without relying on external libraries, you can use the **zlib** library combined with a bit of code to handle the unzipping process.

### Example Code Using miniz

Below is an example of using the **miniz** library, which is a single-header library for zlib. First, you need to download `miniz.h` from its [repository](https://github.com/richgel999/miniz).

#### 1. Including the Library

```cpp
#include "miniz.h"
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <sys/stat.h>

void unzip(const std::string &zipFilePath, const std::string &outDir) {
    mz_zip_archive zipArchive;
    memset(&zipArchive, 0, sizeof(zipArchive));

    // Open the zip archive
    if (!mz_zip_reader_init_file(&zipArchive, zipFilePath.c_str(), 0)) {
        std::cerr << "Failed to open zip file: " << zipFilePath << std::endl;
        return;
    }

    // Create output directory if it doesn't exist
    struct stat st;
    if (stat(outDir.c_str(), &st) == -1) {
        mkdir(outDir.c_str(), 0777);  // Create directory
    }

    // Get the number of files in the zip
    int fileCount = (int)mz_zip_reader_get_number_of_files(&zipArchive);

    for (int i = 0; i < fileCount; ++i) {
        // Retrieve filename
        mz_zip_archive_file_stat fileStat;
        if (!mz_zip_reader_file_stat(&zipArchive, i, &fileStat)) {
            std::cerr << "Failed to stat file: " << i << std::endl;
            continue;
        }

        // Create full output path
        std::string outputPath = outDir + "/" + fileStat.m_filename;

        // Create directory structure as needed
        if (fileStat.m_is_directory) {
            mkdir(outputPath.c_str(), 0777); // Create directory
            continue;
        }

        // Unzip the file
        if (!mz_zip_reader_extract_to_file(&zipArchive, i, outputPath.c_str(), 0)) {
            std::cerr << "Failed to extract file: " << outputPath << std::endl;
        }
    }

    // Close the zip archive
    mz_zip_reader_end(&zipArchive);
}

int main() {
    unzip("example.zip", "output_directory");
    return 0;
}
```

### Explanation of the Code

1. **Initialization**: The `mz_zip_archive` structure is initialized to handle zip operations.
2. **Open Zip Archive**: The function attempts to open the specified zip file.
3. **Output Directory Creation**: It checks if the output directory exists; if not, it creates it.
4. **Extracting Files**:
   - It iterates over the files in the zip archive.
   - For each file, it checks if it’s a directory or a file and extracts it accordingly.
5. **Error Handling**: Any errors during file extraction or opening the zip file are logged to the console.
6. **Cleanup**: The zip archive is closed after extraction.

### Compiling the Code

To compile the code, ensure you have `miniz.h` in the same directory or include the correct path:

```bash
g++ unzip_example.cpp -o unzip_example -lz
```

### Summary

This example demonstrates how to unzip a directory in **C++** using the **miniz** library. If you prefer using another library or need more features like password protection, consider libraries like **libzip** or **zlib**. If you have any questions or require further assistance, feel free to ask!

--------------------

Pytanie użytkownika 5 z 9 - 3.11.2025, 13:12:07:
Are there some built-in mechanisms? I can't use third party libraries

GPT-4o mini:
If you cannot use third-party libraries in C++, you can utilize the built-in capabilities provided by the operating system. Both **Windows** and **Linux** systems have built-in commands for unzipping files that can be executed from a C++ program using the system call. Here’s how you can do it:

## Using System Calls

### For Linux

You can invoke the `unzip` command using the `system` function from the `<cstdlib>` header.

```cpp
#include <cstdlib>
#include <iostream>

void unzip(const std::string &zipFilePath, const std::string &outDir) {
    std::string command = "unzip -o " + zipFilePath + " -d " + outDir;
    int result = system(command.c_str());
    
    if (result != 0) {
        std::cerr << "Failed to unzip: " << zipFilePath << std::endl;
    } else {
        std::cout << "Successfully unzipped to: " << outDir << std::endl;
    }
}

int main() {
    unzip("example.zip", "output_directory");
    return 0;
}
```

### For Windows

On Windows, you can use `powershell` to unzip files:

```cpp
#include <cstdlib>
#include <iostream>

void unzip(const std::string &zipFilePath, const std::string &outDir) {
    std::string command = "powershell -command \"Expand-Archive -Path '" + zipFilePath + "' -DestinationPath '" + outDir + "' -Force\"";
    int result = system(command.c_str());

    if (result != 0) {
        std::cerr << "Failed to unzip: " << zipFilePath << std::endl;
    } else {
        std::cout << "Successfully unzipped to: " << outDir << std::endl;
    }
}

int main() {
    unzip("example.zip", "output_directory");
    return 0;
}
```

### Explanation of the Code

1. **Including Libraries**: `cstdlib` for system calls and `iostream` for input/output operations.
2. **Building the Command**:
   - The command is constructed to call the appropriate unzip utility.
   - For Linux, it uses `unzip -o` to overwrite existing files and specifies the output directory.
   - For Windows, it uses PowerShell's `Expand-Archive`.
3. **Executing the Command**: The `system` function executes the command string. It returns a status code which can be checked to determine if the command executed successfully.
4. **Error Handling**: Checks the return value to determine success or failure.

### Important Note

- The code depends on the availability of command-line tools (e.g., `unzip` for Linux and PowerShell's `Expand-Archive` for Windows). Ensure these tools are installed and available in the system's PATH.
- This method is less portable and relies on external environment settings, but it is a valid approach when you cannot use third-party libraries.

## Conclusion

While C++ does not have built-in support for unzipping files in the standard library, utilizing the operating system's command-line tools through system calls is a practical workaround. If you need further assistance or have other questions, feel free to ask!

--------------------

Pytanie użytkownika 6 z 9 - 3.11.2025, 13:12:33:
C++ header-only libraries for unzip

GPT-4o mini:
If you're looking for **header-only libraries** in C++ to handle zip file extraction without requiring external dependencies, a couple of options can be suitable for your needs. Here are a few popular **header-only** libraries that you can consider for unzipping files:

## 1. **miniz**

**miniz** is a simple and small single-header library for zlib. It provides compression and decompression capabilities, including the ability to unzip files.

### Usage Example:
1. Download the single header file `miniz.h` from the [miniz GitHub repository](https://github.com/richgel999/miniz).
2. Include it in your project.

```cpp
#include "miniz.h"

// Function to unzip
void unzip(const std::string &zipFilePath, const std::string &outputDir) {
    mz_zip_archive zipArchive;
    memset(&zipArchive, 0, sizeof(zipArchive));

    // Open the zip archive
    if (!mz_zip_reader_init_file(&zipArchive, zipFilePath.c_str(), 0)) {
        std::cerr << "Cannot open zip file." << std::endl;
        return;
    }
    
    // Loop through files
    int fileCount = (int)mz_zip_reader_get_number_of_files(&zipArchive);
    for (int i = 0; i < fileCount; i++) {
        mz_zip_archive_file_stat stat;
        mz_zip_reader_file_stat(&zipArchive, i, &stat);
        
        // Create full output path
        std::string outputPath = outputDir + "/" + stat.m_filename;

        if (!mz_zip_reader_extract_to_file(&zipArchive, i, outputPath.c_str(), 0)) {
            std::cerr << "Failed to extract file: " << stat.m_filename << std::endl;
        }
    }

    mz_zip_reader_end(&zipArchive);
}
```

## 2. **zlib.h**

While zlib itself is not strictly a header-only library, you can include `zlib.h` in your project (it comes with most C++ compilers) and use it for unzipping files.

### Usage Example:
You may need to link against zlib when compiling:

```cpp
#include <zlib.h>
#include <iostream>
#include <fstream>

void unzip(std::ifstream& in, std::ofstream& out) {
    char inBuffer[128];
    char outBuffer[128];
    z_stream strm;
    memset(&strm, 0, sizeof(strm));

    // Initialize the decompression
    inflateInit(&strm);

    // Read compressed data
    while (in) {
        in.read(inBuffer, sizeof(inBuffer));
        strm.avail_in = in.gcount();
        strm.next_in = (Bytef *)inBuffer;

        // Decompress until done
        do {
            strm.avail_out = sizeof(outBuffer);
            strm.next_out = (Bytef *)outBuffer;
            inflate(&strm, Z_NO_FLUSH);
            out.write(outBuffer, sizeof(outBuffer) - strm.avail_out);
        } while (strm.avail_out == 0);
    }

    // Clean up
    inflateEnd(&strm);
}
```

### Notes:

- **miniz** is easier to use for zipping and unzipping since it abstracts a lot of the complexity involved with zlib directly.
- The above examples demonstrate basic usage; error handling and thorough checks should be enhanced for production code.
- Ensure your project compiles with the respective library included and correct linking settings applied depending on your IDE or build system.

## Conclusion

Using these **header-only** libraries can simplify your project dependencies while still providing the functionality needed to handle zip files. If you need further assistance with any of these libraries or how to integrate them into your project, feel free to ask!

--------------------

Pytanie użytkownika 7 z 9 - 3.11.2025, 13:54:42:
write method to unzip .zip directory using zlib.h:

void unzip(std::string input_directory_path, std::string output_directory_path)

GPT-4o mini:
To unzip a `.zip` file using `zlib.h`, you will need to write a function that reads the compressed data from the zip file and decompresses it. The code snippet below demonstrates how to implement the `unzip` function in C++. The approach uses `zlib` for decompression.

### Required Libraries

Make sure you have `zlib` installed and linked to your project, as this code relies on it for decompression.

### Implementation

Here’s how you can implement the `unzip` function:

```cpp
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <zlib.h>
#include <filesystem>

void unzip(std::string input_directory_path, std::string output_directory_path) {
    // Read the zip file from the input path
    std::ifstream zipFile(input_directory_path, std::ios::binary);
    if (!zipFile) {
        std::cerr << "Error: Could not open zip file: " << input_directory_path << std::endl;
        return;
    }

    // Placeholder for unzipping content, as zlib does not directly handle zip archives
    constexpr size_t bufferSize = 8192;
    char inBuffer[bufferSize];
    char outBuffer[bufferSize];
    z_stream strm;

    // Initialize the zlib stream for decompression
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    strm.avail_in = 0;
    strm.next_in = Z_NULL;

    if (inflateInit(&strm) != Z_OK) {
        std::cerr << "Error: Could not initialize zlib." << std::endl;
        return;
    }

    while (true) {
        // Read data from the zip file
        zipFile.read(inBuffer, bufferSize);
        strm.avail_in = static_cast<uInt>(zipFile.gcount());
        strm.next_in = reinterpret_cast<Bytef*>(inBuffer);

        // Check for end of file
        if (zipFile.eof() && strm.avail_in == 0) break;

        do {
            strm.avail_out = bufferSize;
            strm.next_out = reinterpret_cast<Bytef*>(outBuffer);

            // Decompress the data
            int ret = inflate(&strm, Z_NO_FLUSH);
            if (ret == Z_STREAM_ERROR || ret == Z_DATA_ERROR || ret == Z_MEM_ERROR) {
                std::cerr << "Error during inflation." << std::endl;
                inflateEnd(&strm);
                return;
            }

            // If output is written, save it to the output path
            std::string outputFile = output_directory_path + "/output_file"; // Adjust as needed
            std::ofstream outFile(outputFile, std::ios::binary | std::ios::app);
            outFile.write(outBuffer, bufferSize - strm.avail_out);
            outFile.close();

        } while (strm.avail_out == 0);
    }

    // Cleanup and close
    inflateEnd(&strm);
    zipFile.close();
}

int main() {
    std::string inputZip = "example.zip"; // Path to your zip file 
    std::string outputDir = "output_directory"; // Path where unzipped content will be placed
    unzip(inputZip, outputDir);
    return 0;
}
```

### Important Notes

1. **Zlib Limitations**: `zlib` operates at a lower level; it doesn't handle ZIP file formats directly. You may need a ZIP file parser to read the structure of the ZIP file (file headers, etc.).
2. **Output Handling**: In the example above, you may need to adjust how files are saved (`outputFile` construction) to manage file names correctly and potentially create nested directories based on the contents of the zip.
3. **File Management**: Make sure to create the output directory if it doesn't exist. Consider using the `<filesystem>` library (available in C++17 and later) to manage directories more easily.
4. **Additional Libraries**: Consider using a library like **miniz** if you need a straightforward solution for zip files without needing to implement ZIP file parsing manually.

### Conclusion

This implementation of `unzip` relies on `zlib` for decompression. For full support of ZIP file structures, you will need additional logic to parse ZIP file headers and manage multiple files efficiently. If you have further questions or need more specific features, feel free to ask!

--------------------

Pytanie użytkownika 8 z 9 - 3.11.2025, 14:12:02:
undefined reference to `inflateInit_'

GPT-4o mini:
The "undefined reference to `inflateInit_`" error typically occurs when the `zlib` library is not linked correctly during the compilation step. Here's how you can address this issue and ensure that your C++ project can properly use the `zlib` functions.

### Steps to Resolve the Issue

1. **Install zlib**: Make sure that `zlib` is installed on your machine. On many Linux distributions, you can install it using the package manager:
   - For Ubuntu/Debian:
     ```bash
     sudo apt-get install zlib1g-dev
     ```
   - For CentOS/RHEL:
     ```bash
     sudo yum install zlib-devel
     ```
   - For macOS (using Homebrew):
     ```bash
     brew install zlib
     ```

2. **Include zlib Header**: Ensure your code correctly includes the `zlib` header:
   ```cpp
   #include <zlib.h>
   ```

3. **Link Against zlib**: When compiling your program, you need to explicitly link against `zlib`. This can be done by adding `-lz` to your compile command. Here’s how to do it for different build systems:

   ### Command Line Compilation Example

   If you are compiling from the command line, your command should look like this:

   ```bash
   g++ -o your_program your_source_file.cpp -lz
   ```

   ### Makefile Example

   If you are using a Makefile, your compilation command should include `-lz` in the linked libraries section:

   ```makefile
   all: your_program

   your_program: your_source_file.o
       g++ -o your_program your_source_file.o -lz

   your_source_file.o: your_source_file.cpp
       g++ -c your_source_file.cpp
   ```

   ### CMake Example

   If you are using CMake, make sure to find and link `zlib` in your `CMakeLists.txt`:

   ```cmake
   find_package(ZLIB REQUIRED)
   include_directories(${ZLIB_INCLUDE_DIRS})

   add_executable(your_program your_source_file.cpp)
   target_link_libraries(your_program ${ZLIB_LIBRARIES})
   ```

### Further Considerations

- If you are working in an IDE like Visual Studio or Code::Blocks, you may need to add the `zlib` library to the project's linker settings within the IDE.
- Ensure that the paths to the `zlib` library are set appropriately in case you've installed it manually or in a non-standard location.

### Conclusion

By ensuring that you have `zlib` properly installed and linked in your project, the "undefined reference to `inflateInit_`" error should be resolved. If you encounter further issues, please provide details about your development environment, and I’d be glad to help!

--------------------

Pytanie użytkownika 9 z 9 - 3.11.2025, 14:13:16:
Unzip directory using system commands in linux

GPT-4o mini:
To unzip a directory using system commands in Linux from a C++ program, you can utilize the `system()` function to call the `unzip` command. Below is a simple implementation demonstrating how to do this.

### Implementation

Here's how you can implement the `unzip` function using the `system` call:

```cpp
#include <iostream>
#include <string>
#include <cstdlib>

void unzip(const std::string &zipFilePath, const std::string &outputDir) {
    // Create the command string
    std::string command = "unzip -o " + zipFilePath + " -d " + outputDir;

    // Execute the command
    int result = system(command.c_str());

    // Check the result of the command execution
    if (result != 0) {
        std::cerr << "Error: Failed to unzip " << zipFilePath << " to " << outputDir << std::endl;
    } else {
        std::cout << "Successfully unzipped to: " << outputDir << std::endl;
    }
}

int main() {
    std::string inputZip = "example.zip";  // Path to your zip file
    std::string outputDir = "output_directory";  // Path where unzipped content will be placed

    unzip(inputZip, outputDir);
    return 0;
}
```

### Explanation

1. **Include Necessary Headers**: The necessary headers are included for input/output operations and system commands.
   
2. **Construct Command**: The command string is constructed to use the `unzip` utility. The `-o` option allows overwriting files without prompting, and `-d` specifies the destination directory where files will be extracted.

3. **Execute Command**: The `system()` function executes the command. It returns an integer indicating the success or failure of the command.

4. **Error Checking**: The return value is checked to determine if the unzip operation was successful. If it's not zero, an error message is displayed.

### Running the Program

Ensure that you have both the `unzip` utility installed on your Linux system and that your input zip file path is correct. You can install `unzip` on Debian-based systems using:

```bash
sudo apt-get install unzip
```

### Compiling the Code

To compile your program, you can use:

```bash
g++ -o unzip_example unzip_example.cpp
```

And run the compiled program with:

```bash
./unzip_example
```

### Conclusion

This implementation leverages the system command to call the `unzip` utility, making it a straightforward way to handle zip files without the need for additional libraries. If you have any further questions or need adjustments to the implementation, feel free to ask!