Placy

A high-performance file transformation service that replaces placeholders in files and archives. Built for speed and efficiency with support for large files (100MB+) and extensive file format compatibility.

Features

• Wide Format Support: Archives (JAR, ZIP, TAR), documents (Word, Excel, PDF), images, text files, and Java bytecode
• High Performance: Streaming architecture with parallel processing for large files
• Smart Caching: Near-instant processing of repeated operations
• Memory Efficient: Processes large files without loading entirely into memory
• Enterprise Security: API key authentication and HTTPS support

Supported File Types

Archives: JAR, WAR, EAR, ZIP, TAR, 7Z, GZIP and more
Documents: Word (.docx), Excel (.xlsx), PowerPoint (.pptx), PDF
Images: JPEG, PNG, TIFF, GIF with metadata editing
Text Files: All programming languages, config files, markup
Java: Class file transformation using ASM

Quick Start

1. Download and run

   wget https://github.com/Harfull/placy/releases/latest/download/Placy.jar
   java -jar Placy.jar

2. Transform a file

   curl -X POST http://localhost:8080/api/v1/transform \
     -H "Content-Type: multipart/form-data" \
     -F "file=@your-file.jar" \
     -F 'placeholders={"${VERSION}":"1.2.3","${ENV}":"production"}'

Configuration

Set optional environment variables:

export SERVER_PORT=8080          # Default port
export SECRET_KEY=your-key       # Optional API key protection  
export HTTPS_ENABLED=false       # Enable HTTPS
export ASYNC_PROCESSING=false    # Enable async processing

API Reference

Endpoint: POST /api/v1/transform

Headers:

• Content-Type: multipart/form-data
• X-Secret-Key: your-key (if SECRET_KEY is set)

Parameters:

• file: The file to transform
• placeholders: JSON object with placeholder mappings

Response: Transformed file as binary data or JSON error

Performance Features

• Streaming I/O: Handles large files without memory issues
• Parallel Processing: Automatic for files >10MB
• Smart Caching: File type detection and processing results
• Asynchronous Mode: Optional concurrent processing for maximum throughput

Development

git clone https://github.com/Harfull/placy.git
cd placy
./gradlew build
./gradlew bootRun    # Development server
./gradlew test       # Run tests

License

MIT License - see LICENSE file for details.