def find_case_insensitive_path()

in tools/url-checker/url_checker.py [0:0]

• 13 lines of code
• 7 McCabe index (conditional complexity)

def find_case_insensitive_path(path):
    """
    Tries to find an existing path with case-insensitive matching.
    Useful for systems where the filesystem is case-sensitive but the URLs might not match case.
    
    Args:
        path: The path to check
        
    Returns:
        The correct path if found with different case, None otherwise
    """
    # If the path exists exactly as provided, no need to search
    if os.path.exists(path):
        return path
    
    # Not found, try to match case-insensitively
    dirname, basename = os.path.split(path)
    
    # If the directory doesn't exist, we can't check its contents
    if not os.path.isdir(dirname):
        return None

    try:
        # Check if a case-insensitive match exists in the parent directory
        for entry in os.listdir(dirname):
            if entry.lower() == basename.lower():
                return os.path.join(dirname, entry)
    except (PermissionError, FileNotFoundError):
        pass
            
    return None