file_handling.py

import os
import glob


# Error messages
FILE_TO_READ_NOT_FOUND = "File not found."
READ_FILE_ERROR = "An error occured whild reading the file. "

FILE_TO_WRITE_NOT_FOUND_ERROR="Path to File not found."
FILE_TO_WRITE_IO_ERROR="Input/Output error while writing file."
FILE_TO_WRITE_UNEXPECTED_ERROR="An unexpected error occured while writing the file."


def find_all_files_with_specific_ending(base_directory: str, file_ending: str="*"):
    """
    retuns a list of all files in the given base_directory with the file ending
    parameter base_directory: the directory to search in
    parameter file_ending: the file ending to filter for. E.g. "py" or nothing/None for all file endings
    """
    sep = os.sep
    search_pattern = os.path.join(base_directory, f'**{sep}*.{file_ending}')
    files = glob.glob(search_pattern, recursive=True)
    return files


def read_file_content(filePath) -> str:
    """
    Returns the content of a file or a string with an error
    """
    try:
        with open(filePath, 'r', encoding='utf-8') as file_to_read:
            content = file_to_read.read()
            return content
    except FileNotFoundError:
        return f"{FILE_TO_READ_NOT_FOUND} - Path: {filePath}"
    except Exception as e:
        return f"{READ_FILE_ERROR} - Path: {filePath} - Exception: {e}"
    

def save_content_in_file(path, content):
    """
    Saves the content in the file with the given path
    If there is an exception the program quits after printing the error
    """
    try:
        with open(path, 'w', encoding='utf-8') as file:
            file.write(content)
    except FileNotFoundError:
        print(f"{FILE_TO_WRITE_NOT_FOUND_ERROR} - Path: {path}")
        exit(1)
    except IOError:
        print(f"{FILE_TO_WRITE_IO_ERROR} - Path: {path}")
        exit(1)
    except Exception as e:
        print(FILE_TO_WRITE_UNEXPECTED_ERROR + f"Path: {path} - Exception: {e}")
        exit(1)