icsharpcode/SharpZipLib
SharpZipLib
SharpZipLib is a .NET compression library and file archiver used to create, extract, and manage Zip, GZip, Tar, and BZip2 archives. It provides a framework for compressing and decompressing data streams and files within the .NET ecosystem.
The library distinguishes itself through support for archives that exceed the standard four gigabyte size limit. It also includes capabilities for decrypting password-protected files using industry-standard encryption and managing Tar archives with long filename support.
The project covers a broad range of archive management operations, including integrity validation, entry searching, and the modification of existing archive contents. Its compression capabilities span multiple algorithms, including BZip2, zlib, and raw deflate formats.
Features
- Zip Archive Management - Provides a comprehensive toolset for creating, compressing, decrypting, and extracting ZIP archives.
- .NET Compression Libraries - Serves as a comprehensive compression and archiving library implemented for the .NET ecosystem.
- Deflate Compressors - Implements the DEFLATE algorithm using LZ77 and Huffman coding for efficient data stream compression.
- Large Data Volume Handling - Supports the creation and extraction of archives that exceed the standard four gigabyte size limit.
- File Archiving - Bundles multiple files and directories into single containers using Zip or Tar formats.
- Archive Compression - Compresses files into archives while preserving external file attributes and directory structures.
- Archive Extractions - Extracts files and reads entry metadata such as comments and timestamps from compressed archives.
- GZip and BZip2 Implementations - Implements the GZip, zlib, and BZip2 algorithms to compress and decompress data streams.
- Data Stream Compression - Implements utilities for reading and writing compressed data streams to optimize memory and transmission time.
- Large Archive Extensions - Manages archives that exceed the standard four gigabyte size limit using extended format specifications.
- Incremental Stream Processing - Processes compressed data using sequential input and output streams to handle files larger than available system memory.
- File Compression and Decompression - Reads and writes compressed archives and streams to optimize storage and reduce file size.
- Gzip Compression - Compresses and decompresses data using GZip, zlib, or raw deflate formats.
- Offset-Based Addressing - Locates and extracts specific archive entries by calculating relative byte offsets within the compressed structure.
- Bzip2 Compression - Compresses and decompresses data using the BZip2 algorithm to reduce file size.
- In-Place Modifications - Allows updating or changing contents within a compressed archive without needing to rebuild the entire file.
- Tar Archives - Creates and extracts files using the Tar archive format to bundle multiple items into one file.
- Password-Protected Archive Decryption - Decrypts password-protected files using industry-standard encryption to recover original data.
- Byte Buffer Pooling - Implements a system for managing byte arrays to minimize memory allocations and garbage collection overhead.
- Codec Abstractions - Provides a modular architecture that isolates BZip2, GZip, and Zip logic into distinct translation modules.
- Format Abstraction Interfaces - Uses standardized interfaces to provide a uniform API across different archive formats like Zip, Tar, and GZip.
- Development Utilities - Library for Zip, GZip, Tar, and BZip2 compression.
