searching_multiple_txt_files

searching_multiple_txt_files.py

import os

source_location = "<location\\of\\the\\folder\\where\\configuration\\files\\are\\kept"
#Note how \\ is used. It is neccessary that you use \\ instead of \ for window file paths

searchString = "sha512WithECDSAEncryption"

def hasEncryption(file, encryptionString):
    # this functions opens a single file and checks 
    # if the file has searchString that we're looking for
    
    with open(file, "r") as server_config_file:
    
        # open function here, takes two arguments 
        # 1 - Filename - the file that we want to open
        # 2 - Filemode - how do we want to open it
        #    r - read mode, means we can read the contents of the file, 
        #        throws an error if file is not present
        #    w - write mode, means we can write into the file,
        #        if the file is present, it gets overwritten
        #        if the file is not present already, it gets created
        #    a - append mode, means we can edit the file and add things to it
        #        As write mode always overwrites the file, we require append
        #        mode to add something to already made files.
        #        If the file is not present already, new file gets created.
        
        # please note how we assigned the name server_config_file to our newly 
        # opened file. Python now does not recognize the actual name of the file 
        # but only recognises the name we assigned to it - server_config_file
        
        config_file_content = server_config_file.read()
        # .read() function allows us to read the whole file at once.
        # all the content inside the file is now available in 
        # config_file_content variable as a string.
        # you can even print it, to see for yourself.
        
        if(encryptionString in config_file_content):
            # Here in keyword is as literal as in english
            # We are checking if our searchString is 'in' (within)
            # our string variable - config_file_content
            # As all the content inside our file is now stored in the
            # form of a single string inside config_file_content
            # using 'in' keyword we check if there a string that's 
            # a substring of the string inside config_file_content
            # eg. if("am" in "I am awesome") would return true because
            # "am" is a substring of "I am awesome"
            
            return True
            # this return is the return value of the function
            
        return False
        # function returns false if 

def log_unencrypted(file):
    #This function just logs the files we are interested in
    #inside a text file. As we haven't given any specific location
    #for the txt file, it gets created in the same location as
    #our python script
    with open("unecrypted_files.txt", "a") as result_file:
        # for explanation on open function, read hasEncrypted function
        
        result_file.write(file+"\n")
        # here we used the write function of the file object (result_file)
        # it'd write anything provided inside .write(<here>) into the file.
        # note that we add an extra \n for bringing the cursor to next line.
        

#os.walk allows us to iterate through all the files and folder in the
#given location
for i in os.walk(source_location):
    path, dirs, files = i
    for file in files: 
        if(not hasEncryption(path+"\\"+ file, searchString)):
        #notice how we used path+file and not just file because 
        #we need full file path to locate a file
        # Here not will invert any boolean result coming from hasEncryption
        # function. So if the function returns True, the condition inside 
        # 'if' will become false and vice versa.
            log_unencrypted(file)