/
html_render.go
90 lines (79 loc) · 2 KB
/
html_render.go
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package http
import (
"bytes"
"errors"
"io"
"github.com/gin-gonic/gin/render"
"github.com/teamlint/pkg/log"
)
var (
ErrHTMLRenderUndefined = errors.New("html render is undefined")
ErrHTMLRenderTemplateNil = errors.New("html render's template is nil")
ErrTemplateUndefined = errors.New("template is undefined")
)
type HTMLRender struct {
hr render.HTMLRender
}
func NewHTMLRender() *HTMLRender {
return &HTMLRender{}
}
func (r *HTMLRender) Configure(s *Server) {
hr := s.Engine.HTMLRender
if hr == nil {
log.Error().Err(ErrHTMLRenderUndefined).Msg("HTMLRender.Configure")
return
}
r.hr = hr
}
func (r *HTMLRender) Output(w io.Writer, name string, data interface{}) error {
if r.hr == nil {
log.Error().Err(ErrHTMLRenderUndefined).Msg("HTMLRender.Output")
return ErrHTMLRenderUndefined
}
t := r.hr.Instance("", nil).(render.HTML).Template
if t == nil {
log.Error().Err(ErrHTMLRenderTemplateNil).Msg("HTMLRender.Output")
return ErrHTMLRenderTemplateNil
}
tmpl := t.Lookup(name)
if tmpl == nil {
return ErrTemplateUndefined
}
return t.ExecuteTemplate(w, name, data)
}
func (r *HTMLRender) String(name string, data interface{}) (string, error) {
buf := bytes.NewBufferString("")
err := r.Output(buf, name, data)
if err != nil {
return "", err
}
return buf.String(), nil
}
func (r *HTMLRender) MustString(name string, data interface{}) string {
str, err := r.String(name, data)
if err != nil {
if err == ErrTemplateUndefined {
log.Warn().Msgf(`HTMLRender: template "%s" is undefined`, name)
return ""
}
}
return str
}
func (r *HTMLRender) Bytes(name string, data interface{}) ([]byte, error) {
buf := new(bytes.Buffer)
err := r.Output(buf, name, data)
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}
func (r *HTMLRender) MustBytes(name string, data interface{}) []byte {
b, err := r.Bytes(name, data)
if err != nil {
if err == ErrTemplateUndefined {
log.Warn().Msgf(`HTMLRender: template "%s" is undefined`, name)
return []byte{}
}
}
return b
}