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82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
package html
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import (
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"net/http"
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"path"
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"text/template"
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"github.com/caos/logging"
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"golang.org/x/text/language"
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)
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const (
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TranslateFn = "t"
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)
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type Renderer struct {
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Templates map[string]*template.Template
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i18n *Translator
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}
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func NewRenderer(templatesDir string, tmplMapping map[string]string, funcs map[string]interface{}, translatorConfig TranslatorConfig) (*Renderer, error) {
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var err error
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r := new(Renderer)
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r.i18n, err = NewTranslator(translatorConfig)
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if err != nil {
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return nil, err
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}
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r.loadTemplates(templatesDir, tmplMapping, funcs)
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return r, nil
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}
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func (r *Renderer) RenderTemplate(w http.ResponseWriter, req *http.Request, tmpl *template.Template, data interface{}, reqFuncs map[string]interface{}) {
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reqFuncs = r.registerTranslateFn(req, reqFuncs)
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err := tmpl.Funcs(reqFuncs).Execute(w, data)
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logging.LogWithFields("HTML-lF8F6w", "template", tmpl.Name).OnError(err).Error("error rendering template")
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}
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func (r *Renderer) Localize(id string, args map[string]interface{}) string {
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return r.i18n.Localize(id, args)
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}
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func (r *Renderer) LocalizeFromRequest(req *http.Request, id string, args map[string]interface{}) string {
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return r.i18n.LocalizeFromRequest(req, id, args)
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}
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func (r *Renderer) Lang(req *http.Request) language.Tag {
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return r.i18n.Lang(req)
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}
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func (r *Renderer) loadTemplates(templatesDir string, tmplMapping map[string]string, funcs map[string]interface{}) {
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funcs = r.registerTranslateFn(nil, funcs)
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funcs[TranslateFn] = func(id string, args ...interface{}) string {
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return id
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}
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tmpls := template.Must(template.New("").Funcs(funcs).ParseGlob(path.Join(templatesDir, "*.html")))
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r.Templates = make(map[string]*template.Template, len(tmplMapping))
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for name, file := range tmplMapping {
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r.Templates[name] = tmpls.Lookup(file)
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}
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}
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func (r *Renderer) registerTranslateFn(req *http.Request, funcs map[string]interface{}) map[string]interface{} {
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if funcs == nil {
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funcs = make(map[string]interface{})
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}
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funcs[TranslateFn] = func(id string, args ...interface{}) string {
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m := map[string]interface{}{}
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var key string
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for i, arg := range args {
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if i%2 == 0 {
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key = arg.(string)
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continue
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}
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m[key] = arg
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}
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if r == nil {
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return r.Localize(id, m)
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}
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return r.LocalizeFromRequest(req, id, m)
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}
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return funcs
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}
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