54 lines
915 B
Go
54 lines
915 B
Go
package main
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import (
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"bytes"
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"fmt"
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"html/template"
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"io"
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"log"
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"sync"
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)
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type templateMap map[string]*template.Template
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type templates struct {
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sync.Mutex
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base string
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templates templateMap
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}
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func newTemplates(base string) *templates {
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return &templates{
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base: base,
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templates: make(templateMap),
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}
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}
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func (t *templates) Add(name string, template *template.Template) {
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t.Lock()
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defer t.Unlock()
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t.templates[name] = template
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}
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func (t *templates) Exec(name string, ctx interface{}) (io.WriterTo, error) {
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t.Lock()
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defer t.Unlock()
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template, ok := t.templates[name]
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if !ok {
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log.Printf("template %s not found", name)
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return nil, fmt.Errorf("no such template: %s", name)
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}
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buf := bytes.NewBuffer([]byte{})
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err := template.ExecuteTemplate(buf, t.base, ctx)
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if err != nil {
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log.Printf("error parsing template %s: %s", name, err)
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return nil, err
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}
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return buf, nil
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}
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