hashnamer.py

import hashlib

def read_wordnet_line(filename, line_number):
    """Reads a specific line from a file, wrapping around if necessary."""
    try:
        with open(filename, 'r') as f:
            lines = f.readlines()
            num_lines = len(lines)
            if num_lines == 0:
                return None  # Handle empty file case
            
            adjusted_line_number = (line_number - 1) % num_lines  # Adjust to 0-based index and wrap around
            return lines[adjusted_line_number].strip().split()
    except FileNotFoundError:
        return None

def process_string(input_string):
    """Hashes a string, splits the hash into two numbers, and reads lines from WordNet files."""
    
    # Hash the input string using SHA256
    sha256_hash = hashlib.sha256(input_string.encode('utf-8')).digest()
    
    # Split the hash into two halves
    half_length = len(sha256_hash) // 2
    first_half = sha256_hash[:half_length]
    second_half = sha256_hash[half_length:]
    
    
    # Convert the halves to integers (using base 16)
    try:
        first_number = int.from_bytes(first_half, signed=False)
        second_number = int.from_bytes(second_half, signed=False)
    except ValueError:
        return "Error: Could not convert hash halves to integers."
    
    # Read lines from the WordNet files
    adj_exc_line = read_wordnet_line('/usr/share/wordnet/adj.exc', first_number)[-1]
    noun_exc_line = read_wordnet_line('/usr/share/wordnet/noun.exc', second_number)[-1]
    
    return adj_exc_line, noun_exc_line

# Example usage:
if __name__ == "__main__":
    import sys
    input_string = " ".join(sys.argv[1:]) if len(sys.argv) > 1 else "example string"
    print (f"Input string: {input_string}")
    adj_line, noun_line = process_string(input_string)
    
    if adj_line:
        print(f"Line from adj.exc: {adj_line}")
    else:
        print("Could not read line from adj.exc (file not found or empty).")
    
    if noun_line:
        print(f"Line from noun.exc: {noun_line}")
    else:
        print("Could not read line from noun.exc (file not found or empty).")