seallib/README.md

seallib

A modular and tiny C++20 powered library collection of random stuff I've needed for other projects.

Installation & Integration

1. Requirements

• Compiler: A C++20 compliant compiler.
• Build System: CMake 4.1.0 or higher.

2. Integration via CMake

Option A: Using FetchContent (Recommended)

You can pull the library directly into your project from the git repository. Add this to your CMakeLists.txt:

include(FetchContent)

FetchContent_Declare(
    seallib
    GIT_REPOSITORY https://git.neru.rip/neru/seallib.git
    GIT_TAG main # or a specific commit hash
)

# Enable the modules you want before making it available
set(SEALLIB_LOG ON)
set(SEALLIB_ASSERT OFF)

FetchContent_MakeAvailable(seallib)

target_link_libraries(your_project PRIVATE seallib)

Option B: Local Path

If you have the library downloaded locally:

# Enable the modules you want before adding it
set(SEALLIB_LOG ON)
set(SEALLIB_ASSERT OFF)

add_subdirectory(path/to/seallib)

target_link_libraries(your_project PRIVATE seallib)

---

Build Options

Option	Description	Default
SEALLIB_ASSERT	Enable Assertion utility	OFF
SEALLIB_EVENTS	Enable Event Dispatcher	OFF
SEALLIB_LOG	Enable Logging Framework	OFF
SEALLIB_VFS	Enable Virtual File System	OFF
SEALLIB_TEST	Build the test project	OFF

---

Module Instructions

1. Logging

The Log module uses a Sink architecture. You create a Logger, attach an ILogSink, and log messages using std::format syntax.

#include <seallib/log.h>
#include <iostream>

using namespace seallib;

class ConsoleSink : public ILogSink {
public:
    void receiveLog(LogType type, std::string_view loggerName, std::string_view message) override {
        std::cout << getLogTypeColor(type) << "[" << getLogTypeName(type) << "] "
                  << "[" << loggerName << "] " 
                  << message << "\x1b[0m" << std::endl;
    }
};

int main() {
    Logger logger("MainApp");
    logger.addSink(std::make_shared<ConsoleSink>());

    logger.info("Application started with version {}", 1.0);
    logger.error("Failed to load config: {}", "file_not_found.json");

    return 0;
}

2. Assertion

(Documentation pending implementation)

3. Events

(Documentation pending implementation)

4. VFS

The VFS (Virtual File System) module provides a unified interface for file operations by mapping virtual paths to user defined providers.

Implementing a file provider

To create a new storage backend (e.g., a zip loader, encrypted volume, etc), you must inherit from IFileProvider.

#include <seallib/vfs.h>

using namespace seallib;

class MyCustomProvider : public IFileProvider {
public:
    // checks if file exists
    bool exists(const std::string& path) const override {
        /*
            implementation logic here
        */
        return true; 
    }

    // loads data from provider to outBuffer
    VFSResult readFile(const std::string& path, FileBuffer& outBuffer) const override {
        /* 
           1. locate the file in your system.
           2. if not found, return VFSResult::FileNotFound.
           3. allocate memory: outBuffer.data = std::make_unique<uint8_t[]>(size);
           4. copy data into outBuffer.data and set outBuffer.size = size;
        */
        return VFSResult::Success;
    }

    // write data from a buffer to your provider
    VFSResult writeFile(const std::string& path, const FileBuffer& buffer) override {
        /* 
           VFS ensures 'buffer' is valid (data != nullptr) before calling this.
           return VFSResult::AccessDenied if your provider is read-only or if that path shouldn't be written to
        */
        return VFSResult::Success;
    }

    // generic file management operations
    VFSResult deleteFile(const std::string& path) override { return VFSResult::Success; }
    VFSResult createDirectory(const std::string& path) override { return VFSResult::Success; }

    // list all files and subdirectories within a given path
    std::vector<std::string> listDirectory(const std::string& path) const override {
        // note: directories should ideally end with a '/' for clarity
        return { "file1", "file2", "file3" };
    }

    // optional: return a name for debugging/logging
    std::string getProviderName() const override { return "MyCustomProvider"; }
};

Example usage

#include <seallib/vfs.h>

using namespace seallib;

int main() {
    VirtualFileSystem vfs;

    /*
        mount a disk provider to the virtual "assets" folder
        higher priority (10 in this case) means this mount is checked before others
    */
    vfs.mount("/assets", std::make_unique<DiskFileProvider>("./data"), 10);

    // reading a file (Paths are automatically normalized to remove '../' etc.)
    FileBuffer buffer;
    if (vfs.readFile("/assets/somefile.bin", buffer) == VFSResult::Success) {
        std::string rawData = buffer.toString();
    }

    return 0;
}

---

Running Tests

Windows (PowerShell + Visual Studio)

A script is provided to automate generation and open the solution in Visual Studio:

./create-test.ps1

Cross-Platform (CLI)

To build and run manually from the terminal:

mkdir build && cd build cmake .. -DSEALLIB_TEST=ON cmake --build . ./seallib-test

License

MIT