src/cnnClassfier/utils/common.py

import os
from box.exceptions import BoxValueError
import yaml
from cnnClassfier import logger
import json
import joblib
from ensure import ensure_annotations
from box import ConfigBox
from pathlib import Path
from typing import Any
import base64



@ensure_annotations
def read_yaml(path_to_yaml: Path) -> ConfigBox:
    """reads yaml file and returns

    Args:
        path_to_yaml (str): path like input

    Raises:
        ValueError: if yaml file is empty
        e: empty file

    Returns:
        ConfigBox: ConfigBox type
    """
    try:
        with open(path_to_yaml) as yaml_file:
            content = yaml.safe_load(yaml_file)
            logger.info(f"yaml file: {path_to_yaml} loaded successfully")
            return ConfigBox(content)
    except BoxValueError:
        raise ValueError("yaml file is empty")
    except Exception as e:
        raise e
    
    
@ensure_annotations
def create_directories(path_to_directories: list, verbose = True):
    """create list of directories

    Args:
        path_to_directories (list): list of path of directories
        ignore_log (bool, optional): ignore if multiple dirs is to be created. Defaults to False.
    """
    
    for path in path_to_directories:
        os.makedirs(path, exist_ok=True)
        if verbose:
            logger.info(f'Created directory  at: {path}')
            
@ensure_annotations
def save_json(path: Path, data: dict):
    """save json data

    Args:
        path (Path): path to json file
        data (dict): data to be saved in json file
    """
    
    
    with open(path, 'w') as f:
        json.dump(data, f, indent=4)
        
    logger.info(f'Json file saved at: {path}')
    
    
    
    
@ensure_annotations
def load_json(path: Path) -> ConfigBox:
    """load json files data

    Args:
        path (Path): path to json file

    Returns:
        ConfigBox: data as class attributes instead of dict
    """
    
    with open(path, 'r') as f:
        content = json.load(f)

    logger.info(f"Json file loaded successfully from: {path}")
    return ConfigBox


@ensure_annotations
def save_bin(data: Any, path: Path):
    """save binary file

    Args:
        data (Any): data to be saved as binary
        path (Path): path to binary file
    """
    joblib.dump(value=data, filename=path)
    logger.info(f'binary file saved at: {path}')
    
    
    
@ensure_annotations
def load_bin(path: Path) -> ConfigBox:
    """load binary data

    Args:
        path (Path): path to binary file

    Returns:
        Any: object stored in the file
    """
    
    data = joblib.load(path)
    logger.info(f'binary file has been loaded successfully from : {path}')
    return data


@ensure_annotations
def get_size(path: Path) -> str:
    '''
    get size in KB
    
    Args:
        Path (Path): path of the file
        
    Returns:
        str: size in KB'''
        
    size_in_kb = round(os.path.getsize(path)/1024)
    return f"~ {size_in_kb} KB"


def decodeImage(imgstring, fileName):
    imgdata = base64.b64decode(imgstring)
    with open(fileName, 'wb') as f:
        f.write(imgdata)
        f.close()
        
        
        
def encodeImageIntoBase64(croppedImagePath):
    with open(croppedImagePath, 'rb') as f:
        return base64.b64decode(f.read())