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viewer.go
53 lines (45 loc) · 1.13 KB
/
viewer.go
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package libs
import (
"html/template"
"net/http"
)
func NewTemplateCache() *TemplateCache {
return &TemplateCache{make(map[string]*template.Template)}
}
type TemplateCache struct {
cache map[string]*template.Template
}
func (t *TemplateCache) HasCache(templateFile string) bool {
_, ok := t.cache[templateFile]
return ok
}
func (t *TemplateCache) ParseFiles(templateFile string) (*template.Template, error) {
tc, err := template.ParseFiles(templateFile)
if err != nil {
t.cache[templateFile] = tc
}
return tc, err
}
func (t *TemplateCache) Get(templateFile string) (*template.Template, error) {
tc, ok := t.cache[templateFile]
if ok {
return tc, nil
} else {
tc, err := t.ParseFiles(templateFile)
return tc, err
}
}
var templateCache *TemplateCache = nil
func Viewer(templateFile string) func(http.ResponseWriter, interface{}) {
if templateCache == nil {
templateCache = NewTemplateCache()
}
tc, err := templateCache.Get(templateFile)
if err != nil {
panic(err)
}
view := func(w http.ResponseWriter, data interface{}) {
tc.Execute(w, data)
}
return view
}