<ruby>好好<rt>haohao</rt></ruby>
package main import ( "os" "fmt" "net/http" ) func main() { // Open File f, err := os.Open("test.pdf") if err != nil { panic(err) } defer f.Close() // Get the content contentType, err := GetFileContentType(f) if err != nil { panic(err) } fmt.Println("Content Type: " + contentType) } func GetFileContentType(out *os.File) (string, error) { // Only the first 512 bytes are used to sniff the content type. buffer := make([]byte, 512) _, err := out.Read(buffer) if err != nil { return "", err } // Use the net/http package's handy DectectContentType function. Always returns a valid // content-type by returning "application/octet-stream" if no others seemed to match. contentType := http.DetectContentType(buffer) return contentType, nil }
system("vim file.name >tty");
system("vim file.name >
");
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<ruby>好好<rt>haohao</rt></ruby>
system("vim file.name >
tty");