mirror of
https://github.com/miniflux/v2.git
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98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package template // import "miniflux.app/v2/internal/template"
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import (
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"bytes"
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"embed"
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"html/template"
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"log/slog"
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"time"
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"miniflux.app/v2/internal/locale"
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"github.com/gorilla/mux"
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)
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//go:embed templates/common/*.html
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var commonTemplateFiles embed.FS
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//go:embed templates/views/*.html
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var viewTemplateFiles embed.FS
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//go:embed templates/standalone/*.html
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var standaloneTemplateFiles embed.FS
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// Engine handles the templating system.
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type Engine struct {
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templates map[string]*template.Template
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funcMap *funcMap
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}
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// NewEngine returns a new template engine.
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func NewEngine(router *mux.Router) *Engine {
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return &Engine{
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templates: make(map[string]*template.Template),
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funcMap: &funcMap{router},
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}
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}
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// ParseTemplates parses template files embed into the application.
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func (e *Engine) ParseTemplates() error {
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funcMap := e.funcMap.Map()
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commonTemplates := template.Must(template.New("").Funcs(funcMap).ParseFS(commonTemplateFiles, "templates/common/*.html"))
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dirEntries, err := viewTemplateFiles.ReadDir("templates/views")
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if err != nil {
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return err
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}
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for _, dirEntry := range dirEntries {
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fullName := "templates/views/" + dirEntry.Name()
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slog.Debug("Parsing template", slog.String("template_name", fullName))
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commonTemplatesClone, err := commonTemplates.Clone()
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if err != nil {
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panic("Unable to clone the common template")
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}
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e.templates[dirEntry.Name()] = template.Must(commonTemplatesClone.ParseFS(viewTemplateFiles, fullName))
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}
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dirEntries, err = standaloneTemplateFiles.ReadDir("templates/standalone")
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if err != nil {
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return err
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}
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for _, dirEntry := range dirEntries {
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fullName := "templates/standalone/" + dirEntry.Name()
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slog.Debug("Parsing template", slog.String("template_name", fullName))
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e.templates[dirEntry.Name()] = template.Must(template.New(dirEntry.Name()).Funcs(funcMap).ParseFS(standaloneTemplateFiles, fullName))
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}
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return nil
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}
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// Render process a template.
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func (e *Engine) Render(name string, data map[string]any) []byte {
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tpl, ok := e.templates[name]
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if !ok {
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panic("This template does not exists: " + name)
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}
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printer := locale.NewPrinter(data["language"].(string))
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// Functions that need to be declared at runtime.
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tpl.Funcs(template.FuncMap{
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"elapsed": func(timezone string, t time.Time) string {
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return elapsedTime(printer, timezone, t)
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},
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"t": printer.Printf,
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"plural": printer.Plural,
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})
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var b bytes.Buffer
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err := tpl.ExecuteTemplate(&b, "base", data)
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if err != nil {
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panic(err)
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}
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return b.Bytes()
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}
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