Huffman-Coding-File-Compressor-Decompressor-with-PDF-Text-Support

A C program that compresses and decompresses files using Huffman coding. Supports direct text files and PDF/Word document conversion to text for compression. Includes both command-line interaction and file handling for efficient storage and retrieval.

Features

• Huffman Coding: Efficient lossless compression using Huffman trees.
• PDF/Word Support: Converts PDF and Word files to text before compression (requires pdftotext and libreoffice).
• Custom File Header: Stores Huffman codes and padding info for accurate decompression.
• Interactive CLI: Choose between compress, decompress, or both.
• Cross-Platform: Written in standard C, with external tool dependencies for document conversion.

Requirements

• GCC or any C compiler
• For PDF support: pdftotext
• For Word support: libreoffice (for .doc/.docx to text conversion)
• Unix-like environment (for popen and shell commands)

Usage

1. Compile the program:

   gcc -o huffman_compress hf\ pdf.c

2. Run the program:

   ./huffman_compress

3. Follow the prompts:

   • Choose to compress, decompress, or both.
   • Enter the file name as prompted.

4. Output:

   • Compressed files will be named <input>_compressed
   • Decompressed files will be named <input>_decompressed

Example

$ ./huffman_compress
Choose an option:
1. Compress and Decompress
2. Compress Only
3. Decompress Only
Enter your choice (1/2/3): 1
Enter the input file name: sample.pdf
Compression and decompression completed successfully!

Notes

• For PDF/Word files, the program converts them to text before compression.
• Ensure pdftotext and libreoffice are installed and available in your system's PATH.
• The program is designed for educational purposes and may require adaptation for large files or production use.

License

This project is open-source and available under the MIT License.

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Author:
[Praveen K]