// get available drivers and known build tags

available, known := drivers.Available(), internal.KnownBuildTags()

// report if database is supported

if len(os.Args) == 2 &&

strings.HasPrefix(os.Args[1], "--has-") &&

strings.HasSuffix(os.Args[1], "-support") {

n := os.Args[1][6 : len(os.Args[1])-8]

if v, ok := known[n]; ok {

n = v

}

var out int

if _, ok := available[n]; ok {

out = 1

}

fmt.Fprint(os.Stdout, out)

return

}

// run

if err := New(os.Args).ExecuteContext(context.Background()); err != nil && err != io.EOF && err != rline.ErrInterrupt {

var he *handler.Error

if !errors.As(err, &he) {

fmt.Fprintf(os.Stderr, "error: %v\n", err)

}

var e *drivers.Error

if errors.As(err, &e) && e.Err == text.ErrDriverNotAvailable {

m := make(map[string]string, len(known))

for k, v := range known {

m[v] = k

}

tag := e.Driver

if t, ok := m[tag]; ok {

tag = t

}

rev := "latest"

if text.CommandVersion == "0.0.0-dev" || strings.Contains(text.CommandVersion, "-") {

rev = "master"

}

fmt.Fprintf(os.Stderr, text.GoInstallHint, tag, rev)

}

switch estr := err.Error(); {

case err == text.ErrWrongNumberOfArguments,

strings.HasPrefix(estr, "unknown flag:"),

strings.HasPrefix(estr, "unknown shorthand flag:"),

strings.HasPrefix(estr, "bad flag syntax:"),

strings.HasPrefix(estr, "flag needs an argument:"):

fmt.Fprintln(os.Stderr, text.CommandHelpHint)

}

os.Exit(1)

}