51 lines
1 KiB
Go
51 lines
1 KiB
Go
package mg
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
)
|
|
|
|
type fatalErr struct {
|
|
code int
|
|
error
|
|
}
|
|
|
|
func (f fatalErr) ExitStatus() int {
|
|
return f.code
|
|
}
|
|
|
|
type exitStatus interface {
|
|
ExitStatus() int
|
|
}
|
|
|
|
// Fatal returns an error that will cause mage to print out the
|
|
// given args and exit with the given exit code.
|
|
func Fatal(code int, args ...interface{}) error {
|
|
return fatalErr{
|
|
code: code,
|
|
error: errors.New(fmt.Sprint(args...)),
|
|
}
|
|
}
|
|
|
|
// Fatalf returns an error that will cause mage to print out the
|
|
// given message and exit with an exit code of 1.
|
|
func Fatalf(code int, format string, args ...interface{}) error {
|
|
return fatalErr{
|
|
code: code,
|
|
error: fmt.Errorf(format, args...),
|
|
}
|
|
}
|
|
|
|
// ExitStatus queries the error for an exit status. If the error is nil, it
|
|
// returns 0. If the error does not implement ExitStatus() int, it returns 1.
|
|
// Otherwise it retiurns the value from ExitStatus().
|
|
func ExitStatus(err error) int {
|
|
if err == nil {
|
|
return 0
|
|
}
|
|
exit, ok := err.(exitStatus)
|
|
if !ok {
|
|
return 1
|
|
}
|
|
return exit.ExitStatus()
|
|
}
|