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package main
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import (
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"io"
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"strings"
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"text/template"
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"github.com/phc-dm/server-poisson/config"
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"github.com/phc-dm/server-poisson/util"
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)
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// TemplateRenderer holds cached templates for rendering
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type TemplateRenderer struct {
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baseFile string
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baseTemplate *template.Template
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templateMap map[string]*template.Template
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}
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// NewTemplateRenderer constructs a template renderer with a base file
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func NewTemplateRenderer(baseFile string) *TemplateRenderer {
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return &TemplateRenderer{
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baseFile: baseFile,
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baseTemplate: template.Must(template.ParseFiles("./views/" + baseFile)),
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templateMap: make(map[string]*template.Template),
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}
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}
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// Render the template
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func (t *TemplateRenderer) Render(w io.Writer, name string, data util.H) error {
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tmpl := t.templateMap[name]
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if config.Mode == "development" || tmpl == nil {
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if config.Mode == "development" {
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tmpl = template.Must(template.ParseFiles("./views/" + t.baseFile))
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} else {
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tmpl = template.Must(t.baseTemplate.Clone())
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}
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tmpl.ParseFiles("./views/" + name)
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t.templateMap[name] = tmpl
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}
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newData := util.H{}
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newData.Apply(data)
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newData["Page"] = util.H{
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// Used to inject a page specific class on <body>
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"Name": strings.TrimSuffix(name, ".html"),
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}
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newData["Config"] = config.Object()
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return tmpl.ExecuteTemplate(w, "base", newData)
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}
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