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|
package system
import (
"errors"
"net"
"os"
"hakurei.app/container"
"hakurei.app/message"
)
// OpError is returned by [I.Commit] and [I.Revert].
type OpError struct {
Op string
Err error
Msg string
Revert bool
}
func (e *OpError) Unwrap() error { return e.Err }
func (e *OpError) Error() string {
if e.Msg != "" {
return e.Msg
}
switch {
case errors.As(e.Err, new(*os.PathError)),
errors.As(e.Err, new(*os.LinkError)),
errors.As(e.Err, new(*net.OpError)),
errors.As(e.Err, new(*container.StartError)):
return e.Err.Error()
default:
if !e.Revert {
return "apply " + e.Op + ": " + e.Err.Error()
} else {
return "revert " + e.Op + ": " + e.Err.Error()
}
}
}
func (e *OpError) Message() string {
if m, ok := message.GetMessage(e.Err); ok {
return m
}
switch {
case e.Msg != "":
return e.Error()
default:
return "cannot " + e.Error()
}
}
// newOpError returns an [OpError] without a message string.
func newOpError(op string, err error, revert bool) error {
if err == nil {
return nil
}
return &OpError{op, err, "", revert}
}
// newOpErrorMessage returns an [OpError] with an overriding message string.
func newOpErrorMessage(op string, err error, message string, revert bool) error {
if err == nil {
return nil
}
return &OpError{op, err, message, revert}
}
func printJoinedError(println func(v ...any), fallback string, err error) {
var joinErr interface {
Unwrap() []error
error
}
if !errors.As(err, &joinErr) {
if m, ok := message.GetMessage(err); ok {
println(m)
} else {
println(fallback, err)
}
} else {
for _, err = range joinErr.Unwrap() {
if m, ok := message.GetMessage(err); ok {
println(m)
} else {
println(err.Error())
}
}
}
}
|
