MaysWind
43 lines
947 B
Go
43 lines
947 B
Go
package templates
|
|
|
|
import (
|
|
"fmt"
|
|
"html/template"
|
|
"path/filepath"
|
|
)
|
|
|
|
const templateBasePath = "templates"
|
|
const templateFileExtension = "tmpl"
|
|
|
|
var templateCache = make(map[KnownTemplate]*CachedTemplate)
|
|
|
|
// CachedTemplate represents a cached template
|
|
type CachedTemplate struct {
|
|
templateName KnownTemplate
|
|
templateContent *template.Template
|
|
}
|
|
|
|
// GetTemplate returns a cached template instance according to the template name
|
|
func GetTemplate(templateName KnownTemplate) (*template.Template, error) {
|
|
fullPath := filepath.Join(templateBasePath, fmt.Sprintf("%s.%s", templateName, templateFileExtension))
|
|
|
|
cachedTemplate, exists := templateCache[templateName]
|
|
|
|
if exists {
|
|
return cachedTemplate.templateContent, nil
|
|
}
|
|
|
|
tmpl, err := template.ParseFiles(fullPath)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
templateCache[templateName] = &CachedTemplate{
|
|
templateName: templateName,
|
|
templateContent: tmpl,
|
|
}
|
|
|
|
return tmpl, err
|
|
}
|