37 lines
789 B
Go
37 lines
789 B
Go
package render
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import (
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"io"
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"net/http"
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"strconv"
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)
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type Reader struct {
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ContentType string
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ContentLength int64
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Reader io.Reader
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Headers map[string]string
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}
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// Render (Reader) writes data with custom ContentType and headers.
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func (r Reader) Render(w http.ResponseWriter) (err error) {
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r.WriteContentType(w)
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r.Headers["Content-Length"] = strconv.FormatInt(r.ContentLength, 10)
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r.writeHeaders(w, r.Headers)
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_, err = io.Copy(w, r.Reader)
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return
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}
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func (r Reader) WriteContentType(w http.ResponseWriter) {
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writeContentType(w, []string{r.ContentType})
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}
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func (r Reader) writeHeaders(w http.ResponseWriter, headers map[string]string) {
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header := w.Header()
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for k, v := range headers {
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if val := header[k]; len(val) == 0 {
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header[k] = []string{v}
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}
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}
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}
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