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main.go
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main.go
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package main
import (
"errors"
"flag"
"fmt"
"io"
"os"
"github.com/robertkrimen/otto"
"github.com/robertkrimen/otto/underscore"
)
var flagUnderscore *bool = flag.Bool("underscore", true, "Load underscore into the runtime environment")
func readSource(filename string) ([]byte, error) {
if filename == "" || filename == "-" {
return io.ReadAll(os.Stdin)
}
return os.ReadFile(filename) //nolint:gosec
}
func main() {
flag.Parse()
if !*flagUnderscore {
underscore.Disable()
}
err := func() error {
src, err := readSource(flag.Arg(0))
if err != nil {
return err
}
vm := otto.New()
_, err = vm.Run(src)
return err
}()
if err != nil {
var oerr *otto.Error
if errors.As(err, &oerr) {
fmt.Fprint(os.Stderr, oerr.String())
} else {
fmt.Fprintln(os.Stderr, err)
}
os.Exit(64)
}
}