python_template_engine/complete_unicode_example.py at master · ssrikanta/python_template_engine · GitHub

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Complete Example: Unicode Support for Text and HTML Templates

This example demonstrates all the Unicode and template type features
of the CustomTemplateEngine.
"""

from template_engine import TemplateEngine

def main():
    """Demonstrate complete Unicode and template type support."""

    print("🌍 CustomTemplateEngine - Complete Unicode & Template Type Example")
    print("=" * 80)

    # Sample data with extensive Unicode content
    context = {
        'website_name': 'Global Connect 🌍',
        'tagline': 'Connecting the world through technology',
        'current_year': 2025,

        # International user data
        'users': [
            {
                'name': 'Emma Johnson',
                'country': 'United States 🇺🇸',
                'greeting': 'Hello!',
                'bio': 'Software engineer & tech enthusiast'
            },
            {
                'name': 'François Dubois',
                'country': 'France 🇫🇷',
                'greeting': 'Bonjour!',
                'bio': 'Développeur passionné de technologie'
            },
            {
                'name': '田中太郎',
                'country': 'Japan 🇯🇵',
                'greeting': 'こんにちは！',
                'bio': 'ソフトウェア開発者として働いています'
            },
            {
                'name': 'Ahmed Al-Rashid',
                'country': 'Saudi Arabia 🇸🇦',
                'greeting': 'مرحبا!',
                'bio': 'مطور برمجيات متخصص في التقنيات الحديثة'
            },
            {
                'name': '李明',
                'country': 'China 🇨🇳',
                'greeting': '你好！',
                'bio': '专注于软件开发的工程师'
            },
            {
                'name': 'Владимир Петров',
                'country': 'Russia 🇷🇺',
                'greeting': 'Привет!',
                'bio': 'Разработчик программного обеспечения'
            }
        ],

        # Special characters and symbols
        'features': [
            'Multi-language support ⚡',
            'Real-time collaboration 🔄',
            'Advanced security 🔒',
            'Cloud integration ☁️',
            'Mobile responsive 📱'
        ],

        'stats': {
            'users_count': '1,000,000+',
            'countries': '195+',
            'languages': '50+',
            'satisfaction': '99.9%'
        },

        'contact_info': {
            'email': 'contact@globalconnect.com',
            'phone': '+1 (555) 123-4567',
            'address': '123 Tech Street, San Francisco, CA'
        }
    }

    # 1. HTML Template Example
    print("\n📄 1. HTML Template (with XSS protection)")
    print("-" * 60)

    html_template = '''<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>$website_name - $tagline</title>
    <style>
        body { font-family: Arial, sans-serif; margin: 0; padding: 20px; }
        .header { background: #f0f8ff; padding: 20px; border-radius: 8px; }
        .user-card { border: 1px solid #ddd; margin: 10px 0; padding: 15px; border-radius: 5px; }
        .stats { display: flex; gap: 20px; margin: 20px 0; }
        .stat { background: #e8f4fd; padding: 10px; border-radius: 5px; text-align: center; }
        .footer { margin-top: 40px; padding: 20px; background: #f9f9f9; border-radius: 5px; }
    </style>
</head>
<body>
    <div class="header">
        <h1>$website_name</h1>
        <p>$tagline</p>
    </div>

    <main>
        <section>
            <h2>Meet Our Global Community 🌏</h2>

            <div class="users">
{% for user in users %}
                <div class="user-card">
                    <h3>$user.name from $user.country</h3>
                    <p><strong>Says:</strong> <em>$user.greeting</em></p>
                    <p><strong>Bio:</strong> $user.bio</p>
                </div>
{% endfor %}
            </div>
        </section>

        <section>
            <h2>Platform Features ✨</h2>
            <ul>
{% for feature in features %}
                <li>$feature</li>
{% endfor %}
            </ul>
        </section>

        <section>
            <h2>Global Statistics 📊</h2>
            <div class="stats">
                <div class="stat">
                    <h3>$stats.users_count</h3>
                    <p>Active Users</p>
                </div>
                <div class="stat">
                    <h3>$stats.countries</h3>
                    <p>Countries</p>
                </div>
                <div class="stat">
                    <h3>$stats.languages</h3>
                    <p>Languages</p>
                </div>
                <div class="stat">
                    <h3>$stats.satisfaction</h3>
                    <p>Satisfaction</p>
                </div>
            </div>
        </section>
    </main>

    <footer class="footer">
        <h3>Contact Us 📞</h3>
        <p>Email: $contact_info.email</p>
        <p>Phone: $contact_info.phone</p>
        <p>Address: $contact_info.address</p>
        <p>&copy; $current_year $website_name. All rights reserved.</p>
    </footer>
</body>
</html>'''

    # Create HTML engine with XSS protection
    html_engine = TemplateEngine(auto_escape=True, strict_mode=False)

    try:
        html_result = html_engine.render_html(html_template, context)

        # Save to file manually
        with open('complete_example.html', 'w', encoding='utf-8') as f:
            f.write(html_result)
        print("✅ HTML template rendered and saved to 'complete_example.html'")
        print(f"   File size: {len(html_result)} characters")

    except Exception as e:
        print(f"❌ HTML template failed: {e}")

    # 2. Plain Text Template Example
    print("\n📄 2. Plain Text Template (no HTML escaping)")
    print("-" * 60)

    text_template = '''$website_name
$tagline

==========================================

🌍 GLOBAL COMMUNITY MEMBERS:

{% for user in users %}
👤 $user.name ($user.country)
   Greeting: "$user.greeting"
   Bio: $user.bio

{% endfor %}

✨ PLATFORM FEATURES:
{% for feature in features %}
• $feature
{% endfor %}

📊 GLOBAL STATISTICS:
• Active Users: $stats.users_count
• Countries: $stats.countries
• Languages: $stats.languages
• Satisfaction Rate: $stats.satisfaction

📞 CONTACT INFORMATION:
Email: $contact_info.email
Phone: $contact_info.phone
Address: $contact_info.address

© $current_year $website_name. All rights reserved.

This template demonstrates full Unicode support including:
- Emojis and symbols: 🌍✨📊📞👤💫⚡🔄🔒☁️📱
- International characters: àáâãäåæçèéêë
- Multiple languages: English, Français, 日本語, العربية, 中文, Русский
- Mathematical symbols: ∑∏∆∇∂∫∞≠≤≥±×÷√
- Currency symbols: €£¥¢ (and many more)'''

    # Create text engine without HTML escaping
    text_engine = TemplateEngine(auto_escape=False, strict_mode=False)

    try:
        text_result = text_engine.render_text(text_template, context)

        # Save to file manually
        with open('complete_example.txt', 'w', encoding='utf-8') as f:
            f.write(text_result)
        print("✅ Text template rendered and saved to 'complete_example.txt'")
        print(f"   File size: {len(text_result)} characters")

        # Show preview
        print("\n📋 Text Template Preview (first 500 characters):")
        print("-" * 60)
        print(text_result[:500] + "..." if len(text_result) > 500 else text_result)

    except Exception as e:
        print(f"❌ Text template failed: {e}")

    # 3. Demonstrate different encoding support
    print("\n🔤 3. Multi-Encoding File Support")
    print("-" * 60)

    encoding_test_data = {
        'test_content': 'Unicode Test: 🌍 Café résumé naïve 中文 العربية ñáéíóú'
    }

    simple_template = 'Encoding Test: $test_content'

    # Test different encodings
    encodings = ['utf-8', 'utf-16', 'utf-32']

    for encoding in encodings:
        try:
            engine = TemplateEngine()
            with open(f'encoding_test_{encoding.replace("-", "_")}.txt', 'w', encoding=encoding) as f:
                result = engine.render_text(simple_template, encoding_test_data)
                f.write(result)
            print(f"✅ Successfully saved with {encoding} encoding")
        except Exception as e:
            print(f"❌ Failed with {encoding}: {e}")

    # 4. Security demonstration
    print("\n🔒 4. Security Features Demonstration")
    print("-" * 60)

    # Potentially dangerous content
    security_context = {
        'user_input': '<script>alert("XSS Attack!")</script>',
        'html_content': '<p>Safe HTML content</p>',
        'special_chars': 'Data with "quotes" & <brackets>',
        'safe_content': 'This is completely safe 🔒'
    }

    security_template = '''Security Test Results:

User Input (XSS attempt): $user_input
HTML Content: $html_content
Special Characters: $special_chars
Safe Content: $safe_content'''

    # Test with HTML escaping (secure)
    secure_engine = TemplateEngine(auto_escape=True, strict_mode=False)
    secure_result = secure_engine.render(security_template, security_context)

    print("🔒 With XSS Protection (HTML escaped):")
    print(secure_result)

    # Test without escaping (potentially unsafe)
    unsafe_engine = TemplateEngine(auto_escape=False, strict_mode=False)
    unsafe_result = unsafe_engine.render(security_template, security_context)

    print("\n⚠️  Without XSS Protection (raw content):")
    print(unsafe_result)

    print("\n🎉 Complete Unicode and Template Type Example Finished!")
    print("=" * 80)
    print("Generated files:")
    print("  📄 complete_example.html - Full HTML page with Unicode")
    print("  📄 complete_example.txt - Plain text with Unicode")
    print("  📄 encoding_test_*.txt - Files in different encodings")
    print("\nKey Features Demonstrated:")
    print("  ✅ Full Unicode support (emojis, international languages)")
    print("  ✅ HTML templates with XSS protection")
    print("  ✅ Plain text templates without escaping")
    print("  ✅ Multiple encoding support")
    print("  ✅ Auto-detection of template types")
    print("  ✅ Security features and escaping control")

if __name__ == "__main__":
    main()