-
-
Save ivanlemeshev/ea784cc85a4e7ac073f1f07c38586295 to your computer and use it in GitHub Desktop.
golang detect content type of a file
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
file, err := os.Open(path) | |
if err != nil { | |
return err | |
} | |
defer file.Close() | |
// Only the first 512 bytes are used to sniff the content type. | |
buffer := make([]byte, 512) | |
_, err = file.Read(buffer) | |
if err != nil { | |
return err | |
} | |
// Reset the read pointer if necessary. | |
file.Seek(0, 0) | |
// Always returns a valid content-type and "application/octet-stream" if no others seemed to match. | |
contentType := http.DetectContentType(buffer) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment