Introduction to Decoder

In the world of programming, a decoder is an essential component that translates coded data into its original format. Decoders help in processing and interpreting encoded data streams, enabling seamless communication between different systems. This guide will provide a comprehensive overview of decoder APIs and offer code snippets for practical understanding.

Decoder API Examples

Below are a series of code snippets demonstrating the utility of various decoder APIs:

Base64 Decoder

import base64

# Encoding a string into Base64
encoded_data = base64.b64encode(b'Sample Data')

# Decoding a Base64 string back to its original format
decoded_data = base64.b64decode(encoded_data)
print(decoded_data.decode('utf-8'))

JSON Decoder

import json

json_data = '{"name": "John", "age": 30, "city": "New York"}'

# Decoding JSON to a Python dictionary
decoded_data = json.loads(json_data)
print(decoded_data)

URL Decoder

from urllib.parse import unquote

url_data = 'Hello%20World%21'

# Decoding a URL-encoded string
decoded_data = unquote(url_data)
print(decoded_data)

HTML Decoder

from html import unescape

html_data = 'Hello & Welcome to <Decoder>'

# Decoding HTML entities
decoded_data = unescape(html_data)
print(decoded_data)

Application Example Using Decoders

Below is an example of a simple application that uses multiple decoders to process data efficiently:

import base64
import json
from urllib.parse import unquote
from html import unescape

def process_data(encoded_str, json_str, url_str, html_str):
    # Decode Base64
    decoded_base64 = base64.b64decode(encoded_str).decode('utf-8')
    
    # Decode JSON
    decoded_json = json.loads(json_str)
    
    # Decode URL
    decoded_url = unquote(url_str)
    
    # Decode HTML
    decoded_html = unescape(html_str)
    
    return {
        'base64': decoded_base64,
        'json': decoded_json,
        'url': decoded_url,
        'html': decoded_html
    }

# Example data
encoded_str = base64.b64encode(b'Sample Data').decode('utf-8')
json_str = '{"name": "John", "age": 30, "city": "New York"}'
url_str = 'Hello%20World%21'
html_str = 'Hello & Welcome to <Decoder>'

processed_data = process_data(encoded_str, json_str, url_str, html_str)
print(processed_data)

This example demonstrates how various decoders can be used together in a single application to ensure data is correctly interpreted and processed.

Hash: c9fbd9152b7ff1375f060ed14c4fac7b6be8709b34cd20c2aeaf8962b100c1ad