sum_sha256_thing

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Filename: sum_sha256_thing.py
# Version: 1.0.2
# Author: Jeoi Reqi

"""
Description:
    - This script reads an input file, calculates the SHA-256 hash of each line, and writes the results to an output file.

Functions:
    - sha256sum(string):
        Returns the SHA-256 hash of a given string.
    - process_file(local_input_filename, local_output_filename):
        Reads an input file, calculates SHA-256 hash of each line, and writes results to an output file.

Requirements:
    - Python 3.x

Usage:
    - To use this script, call the process_file function with the input and output filenames as arguments.

Additional Notes:
    - Make sure the input file exists and is accessible.
    - The output file will be overwritten if it already exists.
"""

import hashlib

def sha256sum(string):
    """
    Return the SHA-256 hash of a given string.

    Args:
        string (str): The input string for which the SHA-256 hash will be calculated.

    Returns:
        str: The SHA-256 hash of the input string.
    """
    return hashlib.sha256(string.encode()).hexdigest()

def process_file(local_input_filename, local_output_filename):
    """
    Read input file, calculate SHA-256 hash of each line, and write results to output file.

    Args:
        local_input_filename (str): The filename of the input file containing the strings.
        local_output_filename (str): The filename of the output file where the SHA-256 hashes will be saved.
    """
    sha256_dict = {}

    print("Processing the input file. This may take some time...")

    with open(local_input_filename, 'r', encoding='utf-8') as infile:
        for line in infile:
            # Remove leading and trailing whitespace
            line = line.strip()
            # Skip empty lines
            if line:
                # Compute SHA-256 hash
                sha256_hash = sha256sum(line)
                # Store the line and its SHA-256 hash in the dictionary
                sha256_dict[line] = sha256_hash

    # Write the dictionary to the output file with custom formatting
    with open(local_output_filename, 'w', encoding='utf-8') as outfile:
        for string, sha256_hash in sha256_dict.items():
            outfile.write(f'"{string}": "{sha256_hash}",\n')

    print("\nProcessing completed. Result saved to:", local_output_filename, "\n")

if __name__ == "__main__":
    global_input_filename = 'input.txt'  # Replace with your list filename
    global_output_filename = 'sum_sha256_dict.txt'
    process_file(global_input_filename, global_output_filename)