import sys
import re

repo_name = sys.argv[1]
branch_name = sys.argv[2]
pattern = re.compile("<img\\s+([^>]*?)(?<![\'\"])(?<!\\/)src\\s*=\\s*([\'\"])(?!http|\\/)(.*?)\\2([^>]*?)>")
replacement = r'<img \1src="https://raw.githubusercontent.com/Avaiga/{repo_name}/{branch_name}/\3"\4>'

with open(f'README.md') as readme_file:
    readme_str = readme_file.read()
    modified_readme = re.sub(pattern, replacement.format(repo_name=repo_name, branch_name=branch_name), readme_str)

with open(f'README.md', 'w') as readme_file:
    readme_file.write(modified_readme)