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