maven-version.py

maven-version.py extracts the Maven major version number from the output of mvn -version.

What It Does

The script:

1. Runs mvn -version
2. Parses the output to extract the major version number
3. Prints the major version (e.g., "3") to stdout

Usage

python3 scripts/maven-version.py

Output

Prints the major version number (e.g., "3") to stdout.

Example

$ python3 scripts/maven-version.py
3

Exit Codes

• 0 - Success, version printed to stdout
• 1 - Error, could not determine Maven version or Maven not found

Use Cases

This script is typically used by other scripts (like release.py) to:

• Check if Maven meets minimum version requirements
• Verify Maven installation

Requirements

• Python 3.6 or higher
• Maven (mvn command must be in PATH)
• No external Python dependencies (uses only standard library)

Notes

• The script looks for patterns like "Apache Maven 3.9.5" or "Maven 3.9.5"
• Returns only the major version number (e.g., "3" from "3.9.5")
• Exits with error if Maven is not found or version cannot be parsed