mirror of
https://github.com/semihalev/twig.git
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c4faeb33d6
- Implement template modification time tracking for auto-reload - Add TimestampAwareLoader interface and implementation - Improve caching with proper reload when files change - Optimize filter chain processing for better performance - Add benchmarks for filter chain optimization - Update documentation with new features 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
155 lines
No EOL
4.2 KiB
Go
155 lines
No EOL
4.2 KiB
Go
package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"time"
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"github.com/semihalev/twig"
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)
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func main() {
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// Create template directories
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templatesDir := "./templates"
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os.MkdirAll(templatesDir, 0755)
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// Create a sample template file
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templatePath := filepath.Join(templatesDir, "hello.twig")
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templateContent := `
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<!DOCTYPE html>
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<html>
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<head>
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<title>{{ title }}</title>
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</head>
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<body>
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<h1>Hello, {{ name }}!</h1>
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<p>Welcome to Twig in {{ mode }} mode.</p>
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{% if items %}
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<ul>
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{% for item in items %}
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<li>{{ item }}</li>
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{% endfor %}
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</ul>
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{% endif %}
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</body>
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</html>
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`
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err := os.WriteFile(templatePath, []byte(templateContent), 0644)
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if err != nil {
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fmt.Printf("Error creating template: %v\n", err)
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return
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}
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fmt.Println("Created template:", templatePath)
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// Create a Twig engine in development mode
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engine := twig.New()
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// Enable development mode
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engine.SetDevelopmentMode(true)
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fmt.Println("Development mode enabled:")
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fmt.Printf(" - Cache enabled: %v\n", engine.IsCacheEnabled())
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fmt.Printf(" - Debug enabled: %v\n", engine.IsDebugEnabled())
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fmt.Printf(" - AutoReload: %v\n", engine.IsAutoReloadEnabled())
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// Register a template loader
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loader := twig.NewFileSystemLoader([]string{templatesDir})
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engine.RegisterLoader(loader)
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// Context for rendering
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context := map[string]interface{}{
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"title": "Twig Development Mode Example",
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"name": "Developer",
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"mode": "development",
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"items": []string{"Easy to use", "No template caching", "Auto-reloading enabled"},
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}
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// Render the template to stdout
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fmt.Println("\n--- Rendering in Development Mode ---")
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err = engine.RenderTo(os.Stdout, "hello.twig", context)
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if err != nil {
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fmt.Printf("Error rendering template: %v\n", err)
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return
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}
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// Cached templates should be empty in development mode
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fmt.Printf("\n\nNumber of cached templates: %d\n", engine.GetCachedTemplateCount())
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// Now switch to production mode
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engine.SetDevelopmentMode(false)
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fmt.Println("\nProduction mode enabled:")
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fmt.Printf(" - Cache enabled: %v\n", engine.IsCacheEnabled())
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fmt.Printf(" - Debug enabled: %v\n", engine.IsDebugEnabled())
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fmt.Printf(" - AutoReload: %v\n", engine.IsAutoReloadEnabled())
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// Change the context
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context["mode"] = "production"
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context["items"] = []string{"Maximum performance", "Template caching", "Optimized for speed"}
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// Render again in production mode
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fmt.Println("\n--- Rendering in Production Mode ---")
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err = engine.RenderTo(os.Stdout, "hello.twig", context)
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if err != nil {
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fmt.Printf("Error rendering template: %v\n", err)
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return
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}
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// Now we should have templates in the cache
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fmt.Printf("\n\nNumber of cached templates: %d\n", engine.GetCachedTemplateCount())
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fmt.Println("Template names in cache:")
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for _, name := range engine.GetCachedTemplateNames() {
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fmt.Printf(" - %s\n", name)
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}
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fmt.Println("\nDemonstrating auto-reload with file modification:")
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// Let's modify the template file
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fmt.Println("Modifying template file...")
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modifiedContent := `
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<!DOCTYPE html>
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<html>
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<head>
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<title>{{ title }} - UPDATED</title>
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</head>
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<body>
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<h1>Hello, {{ name }}!</h1>
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<p>This template was modified while the application is running.</p>
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<p>Welcome to Twig in {{ mode }} mode.</p>
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{% if items %}
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<ul>
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{% for item in items %}
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<li>{{ item }}</li>
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{% endfor %}
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</ul>
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{% endif %}
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<footer>Auto-reload detected this change automatically!</footer>
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</body>
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</html>
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`
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err = os.WriteFile(templatePath, []byte(modifiedContent), 0644)
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if err != nil {
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fmt.Printf("Error modifying template: %v\n", err)
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return
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}
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// Enable development mode
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engine.SetDevelopmentMode(true)
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context["title"] = "Twig Auto-Reload Example"
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// Pause to make sure the file system registers the change
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fmt.Println("Waiting for file system to register change...")
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time.Sleep(1 * time.Second)
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// Render the template again - it should load the modified version
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fmt.Println("\n--- Rendering with Auto-Reload ---")
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err = engine.RenderTo(os.Stdout, "hello.twig", context)
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if err != nil {
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fmt.Printf("Error rendering template: %v\n", err)
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return
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}
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fmt.Println("\n\nSuccess! The template was automatically reloaded.")
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} |