35 lines
575 B
Go
35 lines
575 B
Go
package fs
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import (
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"net/http"
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"os"
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)
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const (
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MimeTypeJpeg = "image/jpeg"
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MimeTypePng = "image/png"
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MimeTypeGif = "image/gif"
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MimeTypeBitmap = "image/bmp"
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)
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// MimeType returns the mime type of a file, empty string if unknown.
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func MimeType(filename string) string {
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handle, err := os.Open(filename)
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if err != nil {
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return ""
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}
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defer handle.Close()
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// Only the first 512 bytes are used to sniff the content type.
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buffer := make([]byte, 512)
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_, err = handle.Read(buffer)
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if err != nil {
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return ""
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}
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return http.DetectContentType(buffer)
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}
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