script for finding versio releases in java code, build a changelog and launch tags to git

changelog.py

import re

from pydriller import Repository


def extract_version(content):
    regex = r"<artifactId>myapp<\/artifactId>.*\n^\-.*<version>(.*)<\/version>.*\n^\+.*<version>(.*)<\/version>"
    matches = re.findall(regex, content, re.MULTILINE)
    if matches:
        return matches[0][0], matches[0][1]
    return None, None

def run():
    for commit in Repository('.').traverse_commits():
        # print(commit.hash, [message for message in commit.msg.split("\n")][0])
        for file in commit.modified_files:
            if 'pom' in file.filename:
                if '<artifactId>myapp</artifactId>' in file.diff:
                    prev, new = extract_version(file.diff)
                    if new:
                        #print ("Bump version from ", prev , "-->", new, commit.hash, "\n")
                        version = new
                        hash = commit.hash
                        print(f"git tag -a {version} {hash} -m \"Release version {version}\"")

run()