import re
import random


def replace_after_pattern(text):
    # Define a function to generate a random number between 950 and 1050
    def random_replacement(match):
        return f"[after={random.randint(950, 1050)}]"

    # Use re.sub to find all instances of '[after=1000]' and replace with random number
    result = re.sub(r'\[after=1000\]', random_replacement, text)
    return result


def process_file(input_filename, output_filename):
    # Read content from the input file
    with open(input_filename, 'r') as input_file:
        text = input_file.read()

    # Replace the patterns in the text
    updated_text = replace_after_pattern(text)

    # Save the updated text to the output file
    with open(output_filename, 'w') as output_file:
        output_file.write(updated_text)


# Example usage
input_file = 'prs/umul4x4_DIMS_delay.act'  # Replace with your input file name
output_file = 'prs/umul4x4_DIMS_rand.act'  # Replace with your desired output file name
process_file(input_file, output_file)