File Creators and Metadata

This example demonstrates the usage of file creators and metadata operations in the True-Core collections module.

Key Concepts

File Creators - Specialized classes for creating dummy files of various types - Support for common file formats (PDF, DOCX, JPG, etc.) - Customizable file sizes and content
DummyFile Class - Unified interface for creating multiple file types - Support for custom file types with custom headers - Batch file creation capabilities
Multimedia Creation - Create test images with specified dimensions - Generate test videos from images - Create audio files with specified duration and frequency
File Metadata - Access basic file properties (name, size, extension) - Calculate file checksums (MD5) - Get comprehensive file statistics

Example Code

Creating Files with Specific Creators

File Creator Examples

)


def demonstrate_file_creators():
    """Shows how to use various file creators."""
    # Create a PDF file
    pdf_creator = PDFFileCreator()
    pdf_file = pdf_creator.create_file("test.pdf", size=1024)
    print(f"Created PDF file: {pdf_file}")

    # Create a JPG file
    jpg_creator = JPGFileCreator()
    jpg_file = jpg_creator.create_file("test.jpg", size=2048)
    print(f"Created JPG file: {jpg_file}")

    # Create an MP3 file

Using the DummyFile Class

DummyFile Usage Examples

    mp3_file = mp3_creator.create_file("test.mp3", size=4096)
    print(f"Created MP3 file: {mp3_file}")


def demonstrate_dummy_file():
    """Shows how to use the DummyFile class for batch creation."""
    dummy = DummyFile(default_size=1024)

    # Create files of different types
    dummy.create_file(".pdf", "document.pdf")
    dummy.create_file(".txt", "notes.txt")
    dummy.create_file(".jpg", "image.jpg")

    # Create a custom file type
    dummy.custom_file(
        "custom.bin",
        ".bin",
        header=b'CUSTOM',

Creating Multimedia Files

Multimedia Creation Examples

    )

    print("Created files:", dummy.created_files)


def demonstrate_multimedia_creation():
    """Shows how to create multimedia files."""
    dummy = DummyFile()

    # Create a test image
    with tempfile.TemporaryDirectory() as temp_dir:
        image_path = os.path.join(temp_dir, "test_image.jpg")
        dummy.create_image(image_path)
        print(f"Created test image: {image_path}")

        # Create a video from the image
        video_path = os.path.join(temp_dir, "test_video.mp4")
        dummy.create_static_video(image_path, video_path)
        print(f"Created test video: {video_path}")

Working with File Metadata

File Metadata Examples

        # Create an audio file
        audio_path = os.path.join(temp_dir, "test_audio.wav")
        dummy.create_audio(audio_path)
        print(f"Created test audio: {audio_path}")


def demonstrate_metadata():
    """Shows how to work with file metadata."""
    # Create a test file
    with tempfile.NamedTemporaryFile(delete=False) as temp:
        temp.write(b"Test content")
        temp_path = temp.name

    # Create a File object and get its metadata
    file = File(temp_path)

    # Get basic properties
    print(f"File name: {file.filename}")
    print(f"Extension: {file.extension}")
    print(f"Size: {file.size} bytes")
    print(f"MD5: {file.md5}")
    print(f"MIME type: {file.mime_type}")

    # Get comprehensive stats
    stats = file.get_stats()
    print("\nComprehensive stats:")
    print(f"Created: {stats.created}")
    print(f"Modified: {stats.modified}")
    print(f"Accessed: {stats.accessed}")
    print(f"Permissions: {stats.permissions}")

Key Features

File Creation - Support for multiple file formats - Customizable file sizes - Custom headers for specialized formats
Multimedia Support - Image generation - Video creation - Audio file generation
Metadata Operations - Basic file properties - File