Exploring isbrotli A Comprehensive Guide to Brotli Compression Library

Brotli is a highly efficient compression algorithm known for its excellent compression rates. In this article, we will introduce the isbrotli module and explore its extensive API with practical examples. By the end, you’ll have a comprehensive understanding of how to leverage isbrotli in your projects.

Installing isbrotli

Before you begin, install the isbrotli module:

 pip install isbrotli 

Basic Usage

Let’s start with some basic usage of the isbrotli API:

 import isbrotli
# Compress data original_data = b"Hello, Brotli compression!" compressed_data = isbrotli.compress(original_data)
# Decompress data decompressed_data = isbrotli.decompress(compressed_data)
assert original_data == decompressed_data 

Advanced Compression Options

Customize the compression process with various options:

 import isbrotli
options = {
    'quality': 5,  # Compression quality (0-11)
    'mode': isbrotli.MODE_TEXT  # Compression mode (GENERIC, TEXT, FONT)
} compressed_data = isbrotli.compress(b"Some data to compress", options) 

Streaming Compression

Handle large files by using streaming compression:

 import isbrotli
compressor = isbrotli.StreamCompressor() with open('largefile.txt', 'rb') as f_in, open('largefile.txt.br', 'wb') as f_out:
    while chunk := f_in.read(1024 * 1024):
        f_out.write(compressor.compress(chunk))
    f_out.write(compressor.finish())

Streaming Decompression

Stream decompressed data:

 import isbrotli
decompressor = isbrotli.StreamDecompressor() with open('largefile.txt.br', 'rb') as f_in, open('largefile_decompressed.txt', 'wb') as f_out:
    while chunk := f_in.read(1024 * 1024):
        f_out.write(decompressor.decompress(chunk))
    f_out.write(decompressor.finish())

Example Application

Let’s build a simple application that uses isbrotli to compress and decompress files:

 import isbrotli import argparse
def compress_file(input_path, output_path):
    with open(input_path, 'rb') as f_in, open(output_path, 'wb') as f_out:
        compressed_data = isbrotli.compress(f_in.read())
        f_out.write(compressed_data)

def decompress_file(input_path, output_path):
    with open(input_path, 'rb') as f_in, open(output_path, 'wb') as f_out:
        decompressed_data = isbrotli.decompress(f_in.read())
        f_out.write(decompressed_data)

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Compress or decompress files using isbrotli")
    parser.add_argument("mode", choices=["compress", "decompress"], help="Mode: compress or decompress")
    parser.add_argument("input", help="Input file path")
    parser.add_argument("output", help="Output file path")
    args = parser.parse_args()

    if args.mode == "compress":
        compress_file(args.input, args.output)
    elif args.mode == "decompress":
        decompress_file(args.input, args.output)

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